国产日韩欧美一区二区三区三州_亚洲少妇熟女av_久久久久亚洲av国产精品_波多野结衣网站一区二区_亚洲欧美色片在线91_国产亚洲精品精品国产优播av_日本一区二区三区波多野结衣 _久久国产av不卡

?

閩北邵武地區(qū)玄武安山巖的成因和意義

2024-06-03 20:03:05周伏順林鑫王郅睿邵程波
關(guān)鍵詞:侏羅世安山巖玄武

周伏順 林鑫 王郅睿 邵程波

周伏順,林鑫,王郅睿,等. 閩北邵武地區(qū)玄武安山巖的成因和意義:來(lái)自年代學(xué)、地球化學(xué)及NdHf同位素的約束.吉林大學(xué)學(xué)報(bào)(地球科學(xué)版),2024,54(3):840861.doi:10.13278/j.cnki.jjuese.20230345.

Zhou Fushun,Lin Xin,Wang Zhirui,et al. Petrogenesis and Significance of Basaltic Andesite in the Shaowu Area, Northern Fujian: Constraints from Geochronology, Geochemistry and NdHf Isotopes. Journal of Jilin University (Earth Science Edition),2024,54(3):840861.doi:10.13278/j.cnki.jjuese.20230345.

摘要:

東南沿海地區(qū)中生代火山巖研究成果頗豐,但有關(guān)中侏羅世晚期基性火山巖的報(bào)道較少,限制了對(duì)該區(qū)域中生代構(gòu)造巖漿活動(dòng)及大地構(gòu)造演化的深入理解。本文對(duì)江紹斷裂帶東南側(cè)邵武地區(qū)的中生代火山巖開(kāi)展了系統(tǒng)的巖石學(xué)、鋯石UPb年代學(xué)、鋯石LuHf同位素、地球化學(xué)和SmNd同位素研究。結(jié)果顯示:邵武地區(qū)玄武安山巖噴發(fā)年齡為(161.0±2.0)Ma;同位素地球化學(xué)結(jié)果顯示,這些樣品中—晚侏羅世鋯石的εHf(t)值介于-14.33~-10.41之間,εNd(t)值較低(-9.2~-8.4),反映富集Nd同位素的特征;巖石地球化學(xué)結(jié)果表明,該套火山巖具有高w(Al2O3)、w(Na2O)、低w(MgO)、w(TFe2O3)等特征,稀土總量較低,稀土配分曲線為右傾型,且具弱的Eu負(fù)異常,大離子親石元素Rb、Ba和K相對(duì)富集,高場(chǎng)強(qiáng)元素Nb、Ta、Ti、P等相對(duì)虧損。綜合巖石學(xué)和地球化學(xué)研究結(jié)果,本文認(rèn)為邵武玄武安山巖起源于交代巖石圈地幔的部分熔融,并經(jīng)歷一定結(jié)晶的分異作用,其大地構(gòu)造背景總體為板內(nèi)環(huán)境。結(jié)合前人對(duì)區(qū)域構(gòu)造巖漿活動(dòng)的認(rèn)識(shí),本文認(rèn)為在中侏羅世晚期,太平洋俯沖板片發(fā)生回撤、撕裂,導(dǎo)致幔源巖漿底侵并置換了古老殼源巖石,從而東南沿海地區(qū)雖整體處于擠壓背景,但仍存在局部拉張環(huán)境。

關(guān)鍵詞:

中侏羅世;地球化學(xué);伸展背景;玄武安山巖;東南沿海

doi:10.13278/j.cnki.jjuese.20230345

中圖分類號(hào):P588.145

文獻(xiàn)標(biāo)志碼:A

收稿日期:20231221

作者簡(jiǎn)介:周伏順(1997—),男,碩士研究生,主要從事地球化學(xué)方面的研究,E-mail:z913909811@163.com

通信作者:林鑫(1987—),男,副教授,主要從事應(yīng)用地球化學(xué)及其與數(shù)據(jù)科學(xué)交叉領(lǐng)域方面的研究,E-mail: xinlin@chd.edu.cn

基金項(xiàng)目:陜西省重點(diǎn)研發(fā)計(jì)劃(2024GHZDXM26);國(guó)家重點(diǎn)研發(fā)計(jì)劃(2016YFC0600601);中央高?;痦?xiàng)目(300102271206)

Supported by the Key Research and Development Program of Shaanxi (2024GHZDXM26), the National Key Research and Development Program(2016YFC0600601) and the Central University Fund Project (300102271206)

Petrogenesis and Significance of Basaltic Andesite in the Shaowu Area, Northern Fujian: Constraints from Geochronology, Geochemistry and NdHf Isotopes

Zhou Fushun,Lin Xin,Wang Zhirui,Shao Chengbo

School of Earth Sciences and Resources, Changan University, Xian 710054, China

Abstract:

Among the Mesozoic volcanic rocks along the southeast coast of China, Middle Jurassic rocks are seldom reported, yet they hold significant importance for understanding Mesozoic magmatic activities and tectonic evolution in this region. The Shaowu basaltic andesite, exposed in the southeast of the Jiangshao fault zone, provides an ideal opportunity for study. This paper systematically presents petrological, zircon UPb geochronological, LuHf isotopic, whole-rock geochemistry and SmNd isotopic analyses of the basaltic andesite, indicating an eruption age of (161.0±2.0) Ma. The isotopic data shows that all samples are characterized by εHf(t) values ranging from -14.33 to -10.41 and low εNd(t) values between -9.2-8.4. The geochemical results shows high w(Al2O3)? and w(Na2O) contents, along with low levels of w(MgO) and w(TFe2O3) etc. The total rare earth elements (REE) content is low, with chondrite-normalized REE patterns showing LREE enrichment and weak Eu negative anomalies. Furthermore, large ion lithophile elements such as Rb, Ba and K are enriched, while the high field strength elements such as Nb, Ta, Ti and P are relatively depleted. The geochemical and petrological characteristics of the basaltic andesite imply that it originated from partial melting of a metasomatic mantle wedge, underwent certain crystallization differentiation, and formed in an intraplate tectonic environment. Based on previous studies on regional tectonic-magmatic activities, it is proposed that Pacific subducted plate retreat and tearing, resulting in encroachment of mantle-derived magma and the replacement of ancient crust-derived rocks, occurred amidst local extension within the broader compressional background of the south-eastern coast of China during the Middle Jurassic.

Key words:

Middle Jurassic; geochemical; extensional setting; basaltic andesite; southeast coast of China

0? 引言

玄武安山巖直接導(dǎo)源于上地幔,受地幔源巖成分的制約,其巖漿的形成與全球構(gòu)造,如裂谷擴(kuò)張、板塊俯沖消減及地幔的深部作用(地幔對(duì)流、局部隆升、流體交代)等過(guò)程有關(guān)。因此,玄武安山巖研究對(duì)于反演地幔物質(zhì)成分、分析構(gòu)造環(huán)境及地球深部動(dòng)力學(xué)均具重大意義[1],是國(guó)際火山巖研究的熱點(diǎn)[25]。

華南地區(qū)以大面積分布的巖漿巖[6]及金屬礦床[7]為特色,其內(nèi)部可劃分出多個(gè)構(gòu)造帶[8]及成礦帶[9],使得該地區(qū)成為國(guó)內(nèi)外學(xué)者研究的熱點(diǎn)地區(qū)之一?,F(xiàn)有研究表明,這些大規(guī)模的巖漿及礦床多與晚中生代的火山作用密切相關(guān),并被普遍解釋為是古太平洋板塊向歐亞大陸俯沖作用所造成的應(yīng)力體制轉(zhuǎn)換的產(chǎn)物。然而,前人[1011]對(duì)于轉(zhuǎn)換的時(shí)限是否為中侏羅世目前還存在爭(zhēng)議。目前,對(duì)于該時(shí)期華南地區(qū)的應(yīng)力狀態(tài)也相應(yīng)存在不同的觀點(diǎn),主要包括:由擠壓轉(zhuǎn)為伸展體制[10]、擠壓體制[11]以及整體擠壓體制下的局部伸展[6]。

玄武安山巖作為深部地質(zhì)過(guò)程的記錄者,能夠?yàn)槔斫庠焐綆?gòu)造演化過(guò)程提供很好的窗口,也為解決上述爭(zhēng)議提供了新的思路。閩北地區(qū)侏羅紀(jì)火山巖廣泛發(fā)育,其成因及構(gòu)造背景的界定對(duì)于確定區(qū)域構(gòu)造格架及演化起著至關(guān)重要的作用。該地區(qū)火山巖以大規(guī)模中酸性火山巖為主[1217],而對(duì)于玄武安山巖的報(bào)道較少。本文以邵武地區(qū)采集的玄武安山巖為研究對(duì)象,通過(guò)對(duì)樣品進(jìn)行巖石學(xué)、年代學(xué)、鋯石LuHf同位素、全巖地球化學(xué)以及SmNd同位素的研究,確定玄武安山巖的形成時(shí)代及其成因,闡明中侏羅世古太平洋板塊俯沖作用對(duì)閩北地區(qū)的影響。

1? 地質(zhì)背景及樣品描述

華南板塊由揚(yáng)子地塊、華夏地塊以及其間的縫合帶 — 江南造山帶共同組成[1821],南北方向上分別夾持于東南亞塊體和秦嶺造山帶之間,西鄰青藏高原,東側(cè)為太平洋板塊。自元古宙板塊拼合以來(lái),華南板塊經(jīng)歷了多階段的構(gòu)造巖漿活動(dòng),成為研究大陸體制轉(zhuǎn)換的理想?yún)^(qū)域[2223]。其中,中生代板塊間構(gòu)造體制的變化導(dǎo)致了區(qū)域巨量巖漿的侵位(圖1a),引發(fā)了華南大規(guī)模的成礦事件,成為國(guó)內(nèi)外地質(zhì)學(xué)家研究的焦點(diǎn)。

揚(yáng)子地塊內(nèi)部可劃分為同一蓋層的不同基底,新元古代以來(lái)拼合成為穩(wěn)定的克拉通[25];華夏地塊主要由大面積的新元古代碎屑巖夾火山巖、巖漿巖及碳酸鹽巖組成。新元古代末期,揚(yáng)子和華夏地塊發(fā)生碰撞拼合,形成江南造山帶,沿該造山帶南界的江紹斷裂帶分布了大量冷侵位的蛇綠巖套、藍(lán)片巖

和具島弧屬性的巖漿巖[2627]。加里東期和印支期華南板塊經(jīng)歷了兩期陸內(nèi)造山運(yùn)動(dòng),主要體現(xiàn)在揚(yáng)子地塊東半部和整個(gè)華夏地塊,區(qū)域內(nèi)巖石卷入強(qiáng)烈變質(zhì)變形過(guò)程中[25]。尤其是加里東期造山運(yùn)動(dòng)使得前泥盆紀(jì)巖石大多變質(zhì)成為片巖、片麻巖和混合巖,且伴隨強(qiáng)烈的巖漿活動(dòng),形成變質(zhì)變形巖石花崗巖復(fù)合體系[27]。

邵武地區(qū)位于華夏地塊中北部,區(qū)域出露的地層由老到新依次為:震旦系、下古生界羅峰溪群、侏羅系(圖1b)。震旦系為黑云母斜長(zhǎng)片麻巖、云母片巖夾斜長(zhǎng)角閃巖,變質(zhì)程度達(dá)角閃巖相,且發(fā)育強(qiáng)烈的混合巖化作用[2829]。下古生界羅峰溪群為灰綠色變砂巖、千枚巖、片巖,局部夾大理巖。侏羅系通過(guò)斷層與下古生界分隔,內(nèi)部巖石單元包括:兜嶺群,下部為砂巖夾凝灰?guī)r及灰?guī)r透鏡體,上部為晶屑凝灰?guī)r;漳平群,為紅綠相間的粉砂巖及細(xì)砂巖;梨山群,分為下部的灰黑色砂礫巖、粗砂巖、粉砂巖及上部的砂巖夾灰?guī)r透鏡體。研究區(qū)南東側(cè)及北西側(cè)分別出露NE走向的政和—大埔斷裂帶及江紹斷裂帶,區(qū)內(nèi)斷裂構(gòu)造發(fā)育,包括NE向、NW向及EW向等多組,其中近NE向最為發(fā)育。區(qū)內(nèi)巖漿巖主要為印支期和燕山期黑云母花崗巖,侵位于震旦系中,其次是玄武安山巖和閃長(zhǎng)巖,零星分布于下古生界羅峰溪群中[30]。

本次研究的玄武安山巖出露于邵武市南側(cè)的羅峰溪群千枚巖中,規(guī)模較小,呈NE向延伸,長(zhǎng)度約300 m,寬度約100 m。由于植被覆蓋,玄武安山巖與千枚巖接觸界面不易觀察,巖石表面風(fēng)化較強(qiáng),呈黃褐色,而人工揭露的斷面上巖石相對(duì)新鮮,呈深灰色,節(jié)理發(fā)育(圖2a),十分破碎。巖石表面可見(jiàn)氣孔構(gòu)造,內(nèi)部被方解石礦物充填(圖2b)。

鏡下觀察顯示,玄武安山巖具間粒間隱結(jié)構(gòu),塊狀構(gòu)造,斑晶體積分?jǐn)?shù)為35%~40%,多為斜長(zhǎng)石,自形板狀,表面可見(jiàn)弱絹云母化,粒徑為0.2~0.5 mm,見(jiàn)少量石英,粒徑多為0.1~0.2 mm。局部可見(jiàn)杏仁體,主要由方解石和石英充填,大小為1.0~1.5 mm,體積分?jǐn)?shù)為5%~10%?;|(zhì)由細(xì)粒斜長(zhǎng)石和輝石等組成,基質(zhì)中見(jiàn)半自形粒狀的次生綠簾石和次生方解石(圖3)。根據(jù)巖石結(jié)構(gòu)、構(gòu)造及礦物成分組成,定名為玄武質(zhì)安山巖。

2? 分析方法

本次工作采集了露頭上較新鮮的玄武安山巖樣品,采樣位置見(jiàn)圖1b。選擇其中1件樣品進(jìn)行年代學(xué)及鋯石LuHf同位素分析,4件樣品進(jìn)行全巖主微量及稀土元素、SmNd同位素測(cè)試。

鋯石單礦物挑選在河北省廊坊市尚藝巖礦檢測(cè)技術(shù)服務(wù)有限公司完成。將野外采集的樣品粉碎,通過(guò)常規(guī)重選法選出單礦物,在雙目鏡下挑選出形態(tài)較好的鋯石。鋯石制靶在南京宏創(chuàng)地質(zhì)勘查技術(shù)服務(wù)有限公司完成。首先通過(guò)環(huán)氧樹(shù)膠將待測(cè)鋯石和標(biāo)準(zhǔn)鋯石固定在玻璃板上,然后拋光至鋯石暴露出

中心面,在偏光顯微鏡下對(duì)鋯石進(jìn)行反射光和透射光拍照,確定鋯石的包體以及裂紋情況,最后進(jìn)行陰極發(fā)光(CL)照相,以檢查鋯石的內(nèi)部結(jié)構(gòu)。

選擇晶形較好,無(wú)包體、裂紋的鋯石顆粒進(jìn)行鋯石UPb測(cè)年分析。鋯石分析在中國(guó)地質(zhì)科學(xué)院礦產(chǎn)資源研究所使用電感耦合等離子體質(zhì)譜儀(LAMCICPMS)完成,詳細(xì)的儀器參數(shù)和分析流程見(jiàn)文獻(xiàn)[31]。儀器的型號(hào)和相應(yīng)的激光剝蝕系統(tǒng)分別為Finnigan Neptune型LAMCICPMS和NewWave UP213 nm。實(shí)驗(yàn)過(guò)程采用單點(diǎn)剝蝕,直徑為30 μm,采樣深度為20~40 μm,頻率為10 Hz,輸出能量約為2.5 J/cm2。實(shí)驗(yàn)過(guò)程采用He作為載氣。鋯石年齡以GJ1為外標(biāo),元素質(zhì)量分?jǐn)?shù)以M217為外標(biāo)。在測(cè)試過(guò)程中,每隔10個(gè)樣品點(diǎn)測(cè)試

2個(gè)GJ1和1個(gè)Plesovice標(biāo)準(zhǔn)鋯石。最后使用ICPMSDataCal軟件完成數(shù)據(jù)處理(信號(hào)選擇、漂移校正和年齡計(jì)算),通過(guò)Isoplot3.0軟件計(jì)算加權(quán)平均年齡。

鋯石LuHf同位素測(cè)定在北京科薈測(cè)試技術(shù)有限公司完成,儀器為激光剝蝕多接收器電感耦合等離子體質(zhì)譜儀(Neptune plus),激光進(jìn)樣系統(tǒng)為RESOlution SE固體激光器。根據(jù)鋯石照片選擇合適區(qū)域,利用激光剝蝕系統(tǒng)對(duì)鋯石進(jìn)行剝蝕。測(cè)點(diǎn)位置為UPb年齡的同一測(cè)點(diǎn)或其附近。激光剝蝕的斑束直徑為30~38 μm,能量密度為6 J/cm2,頻率為6 Hz,激光剝蝕物質(zhì)以高純He為載氣送入Neptune Plus(MCICPMS),積分時(shí)間為27 s。鋯石樣品GJ1用作分析的參考標(biāo)準(zhǔn)。在分析過(guò)程中,GJ1標(biāo)準(zhǔn)的176Hf/177Hf加權(quán)平均值為0.282 007±0.000 007(2σ,n=36),與誤差范圍內(nèi)的報(bào)告值一致。采用179Hf/177Hf = 0.7325對(duì)Hf同位素比值進(jìn)行指數(shù)歸一化質(zhì)量歧視校正,采用173Yb/172Yb=1.35274對(duì)Yb同位素比值進(jìn)行指數(shù)歸一化質(zhì)量歧視校正。由于鋯石中176Lu/177Hf值通常小于0.002,因此鋯石中176Hf的同質(zhì)異位素的干擾主要來(lái)自176Yb。在鋯石激光剝蝕過(guò)程中直接測(cè)定Yb信號(hào),用剝蝕過(guò)程中βYb的平均值作為Yb的質(zhì)量歧視校正系數(shù)來(lái)進(jìn)行同質(zhì)異位素176Yb的干擾校正。

巖石樣品主、微量及稀土元素測(cè)定在北京燕都中實(shí)測(cè)試技術(shù)有限公司完成。將巖石粗碎至厘米級(jí)的碎塊,選取無(wú)蝕變及脈體穿插的新鮮樣品用純化水沖洗干凈,烘干并粉碎至200目備用。主量元素測(cè)試:首先將粉末樣品稱量后加入Li2B4O7 (1∶8)助熔劑混合,然后使用融樣機(jī)加熱至1 150 ℃使其在金鉑坩堝中熔融成均一玻璃片體,最后使用XRF(Zetium, PANalytical)測(cè)試,測(cè)試結(jié)果保證數(shù)據(jù)誤差小于1%。微量及稀土元素測(cè)試:首先將200目粉末樣品稱量并置放入聚四氟乙烯溶樣罐并加入HF+HNO3,然后在干燥箱中將高壓消解罐保持在190 ℃溫度72 h,最后取出經(jīng)過(guò)趕酸并將溶液定容為稀溶液上機(jī)測(cè)試。測(cè)試使用ICPMS(M90, analytikjena)完成,所測(cè)數(shù)據(jù)根據(jù)監(jiān)控標(biāo)樣GSR2顯示誤差小于5%,部分揮發(fā)性元素及極低質(zhì)量分?jǐn)?shù)元素的分析誤差小于10%。

SmNd同位素測(cè)定在核工業(yè)北京地質(zhì)研究院使用ISOPROBET熱電離質(zhì)譜儀進(jìn)行。詳細(xì)的化學(xué)制備、質(zhì)譜法和標(biāo)準(zhǔn)樣品測(cè)定見(jiàn)文獻(xiàn)[32]。使用143Nd/144Nd=0.7219校正Nd同位素分析質(zhì)量,測(cè)定過(guò)程中標(biāo)準(zhǔn)樣品的測(cè)量結(jié)果如下:基準(zhǔn)物質(zhì)JMC=0.521109±3.000000(143Nd/144Nd)。Sm和Nd的分析空白總量為5×10-11 g。

3? 分析結(jié)果

3.1? 鋯石年齡

玄武安山巖中的鋯石大多為短柱狀,粒徑50~150 μm,長(zhǎng)寬比為1∶1~1.5∶1。在CL圖像中可見(jiàn)其具有清晰的振蕩環(huán)帶(圖4),具有巖漿鋯石的特征。選取29顆發(fā)育環(huán)帶的鋯石進(jìn)行UPb同位素測(cè)試分析,測(cè)試結(jié)果見(jiàn)表1。結(jié)果顯示所有分析點(diǎn)的Th/U值均大于0.1,這也反映其鋯石為巖漿成因。其中一個(gè)測(cè)點(diǎn)的

206Pb/238U年齡

為234.4 Ma,結(jié)合其CL測(cè)點(diǎn)位置認(rèn)為該數(shù)值代表了樣品中鋯石的混合年齡。其余鋯石分析年齡可以分為兩組,在鋯石年齡諧和圖上,7個(gè)年齡數(shù)據(jù)點(diǎn)的206Pb/238U年齡為458.0~443.2 Ma,其加權(quán)平均年齡為(449.6±5.3) Ma (n=7, MSWD=0.49)(圖4a);其余21個(gè)數(shù)據(jù)點(diǎn)206Pb/238U年齡為168.1~151.4 Ma,其加權(quán)平均年齡為(161.0±2.0) Ma (n=21, MSWD=2.5)(圖4b)。

3.2? 鋯石LuHf同位素

玄武安山巖中鋯石LuHf同位素分析結(jié)果見(jiàn)圖5及表2。樣品FJ115中的12顆鋯石加權(quán)平均

年齡為161 Ma,其(176Hf/177Hf)i值和εHf(t)值分別為0.282 28~0.282 39和-14.33~-10.41,對(duì)應(yīng)于Hf地殼TDMC為2 096~1 847 Ma。

4顆鋯石的

加權(quán)平均年齡為450 Ma,其(176Hf/177Hf)i值為0.282 22~0.282 25,εHf(t)值為-10.08~-8.98,對(duì)應(yīng)于2 040~1 977 Ma的TDMC。

3.3? 主、微量及稀土元素

玄武安山巖的主量元素分析結(jié)果見(jiàn)表3。由于采集的樣品發(fā)生了輕微蝕變,因此在進(jìn)行元素分析時(shí),盡量不采用對(duì)蝕變作用比較敏感的Rb、Ba、K、Si等活動(dòng)性元素,而利用不活潑的Ti、Zr、Nb、Y、Ta、Hf及稀土元素來(lái)判別巖石類型[3334]。w(Th)w(Co)和Zr×0.0001/

TiO2Nb/Y判別圖(圖6)[3536]中,采集的樣品大多落入安山巖或玄武安山巖的范圍,綜合樣品巖相學(xué)中較高的石英體積分?jǐn)?shù)、長(zhǎng)石的寬板狀形態(tài)以及測(cè)年樣品中挑選出的鋯石形態(tài),認(rèn)為樣品應(yīng)屬于鈣堿性玄武安山巖。

玄武安山巖樣品的SiO2質(zhì)量分?jǐn)?shù)為50.80%~52.48%,MgO質(zhì)量分?jǐn)?shù)為5.40%~6.59%,TFe2O3質(zhì)量分?jǐn)?shù)為8.04%~8.54%,TiO2質(zhì)量分?jǐn)?shù)為0.92%~1.02%,Al2O3質(zhì)量分?jǐn)?shù)為14.50%~15.64%,Mg#值為55~59。主量元素分析中產(chǎn)生了較高的燒失量(6.70%~7.36%),因此,需要對(duì)后期蝕變作用是否對(duì)活動(dòng)性元素產(chǎn)生影響進(jìn)行判別[37]。活動(dòng)性元素SiO2與

相對(duì)不活動(dòng)的元素Ce之間明顯負(fù)相關(guān),

而K2O、Rb、Th與其明顯

正相關(guān)(圖7),這些元素在巖石后期蝕變過(guò)程中受到的影響較小,其質(zhì)量分?jǐn)?shù)的變化是由巖漿作用產(chǎn)生的。另外,在稀土元素及微量元素圖解(圖8)中,4個(gè)樣品呈現(xiàn)出大致相同的變化規(guī)律,也指出玄武安山巖樣品的化學(xué)成分沒(méi)有受到后期蝕變作用的明顯改變。

玄武安山巖樣品稀土和微量元素質(zhì)量分?jǐn)?shù)分析結(jié)果見(jiàn)表4。稀土元素總量w(ΣREE)較低,為82.33×10-6~92.40×10-6。在球粒隕石標(biāo)準(zhǔn)化稀土元素配分型式圖上(圖8a),樣品總體富集輕稀土,呈現(xiàn)出輕稀土右傾而重稀土近平坦的樣式,輕重稀土之間分餾較弱(LREE/HREE=7.38~7.71,(La/Yb)N=7.69~8.21),表現(xiàn)為弱的負(fù)Eu異常,δEu為0.76~0.84。樣品微量元素組成特征見(jiàn)圖8b,整體富集大離子親石元素Rb、Ba和K,相對(duì)虧損高場(chǎng)強(qiáng)元素Nb、Ta、Ti、P。

3.4? SmNd同位素

玄武安山巖SmNd同位素組成相對(duì)均勻(表5),147Sm/144Nd為0.131 3~0.135 0,143Nd/144Nd為0.512 104~0.512 139,低于原始地?,F(xiàn)代值0.512 638[39]。采用樣品的形成年齡(161 Ma)進(jìn)行計(jì)算,樣品的εNd(t)=-9.2~-8.4,這些特征表明在巖石形成過(guò)程中有大量地殼物質(zhì)加入。在計(jì)算巖石Nd模式年齡時(shí),SmNd同位素的分餾效應(yīng)會(huì)產(chǎn)生明顯的影響,以致其模式年齡結(jié)果不合理,為了減少此類影響,本文采用兩階段模式計(jì)算巖石Nd同位素模式年齡,用以近似代表樣品源巖的地殼存留年齡。Nd單階段模式年齡(TDM)為2 020~1 890 Ma,與鋯石中Hf的模式年齡大體一致。Nd模式年齡值大多分布在古元古代,這也進(jìn)一步表明巖漿形成過(guò)程中有新元古代地殼物質(zhì)的參與。

4? 討論

4.1? 火山巖時(shí)代

1∶20萬(wàn)順層幅區(qū)調(diào)報(bào)告中未將本次工作中涉及的玄武安山巖圈出,但在其周邊地區(qū)零星圈出了多個(gè)安山玢巖露頭,它們呈巖脈產(chǎn)出于羅峰溪群內(nèi),時(shí)代定為燕山早期[30]。本次地質(zhì)考察通過(guò)野外和鏡下特征認(rèn)為該地區(qū)巖石具有明顯的杏仁構(gòu)造,且SiO2質(zhì)量分?jǐn)?shù)變化范圍為50.80%~52.48% (<

53%),該套巖石屬于典型的玄武安山巖。本文選取新鮮樣品的LAICPMS 鋯石UPb 定年結(jié)果表明,玄武安山巖內(nèi)部包含了(449.6±5.3) Ma和(161.0±2.0) Ma兩組年齡。但玄武安山巖產(chǎn)于羅峰溪群內(nèi)部,表明其噴發(fā)時(shí)代應(yīng)該晚于地層,羅峰溪群內(nèi)部的化

石表明其時(shí)代為晚奧陶世(440 Ma)[40]。

因此,玄武安山

巖中(449.6±5.3)? Ma的年齡不能代表其噴發(fā)時(shí)代。華南地區(qū)在早古生代經(jīng)歷了強(qiáng)烈的構(gòu)造熱事件,在華夏地塊尤為突出,華夏地塊的大多數(shù)巖石發(fā)生變質(zhì)變形改造及混合巖化,同時(shí)也引發(fā)了大面積的巖漿活動(dòng)[41]。玄武安山巖中(449.6±5.3) Ma的年齡與華南板塊加里東期發(fā)育的巖漿事件一致,代表了玄武安山巖形成過(guò)程中的巖漿鋯石捕虜晶。結(jié)合上述討論,(161.0±2.0) Ma的年齡應(yīng)為邵武地區(qū)玄武安山巖的噴發(fā)時(shí)代,為晚侏羅世。

侏羅紀(jì)是華南板塊重要的構(gòu)造巖漿活化期,該時(shí)期巖漿巖廣泛出露,包括中酸性及基性巖漿巖[42]。其中大量的A型花崗巖、雙峰火山巖、板內(nèi)拉斑玄武巖和板內(nèi)堿性玄武巖分布于南嶺構(gòu)造帶[43]。而東南沿海地區(qū)則發(fā)育大量的中酸性巖漿巖,如邢光福等[6]報(bào)道了福安地區(qū)安山巖的年齡為(162.3±3.7) Ma,張偉等[13,44]認(rèn)為浙江松陽(yáng)毛弄組火山巖的時(shí)代為180~153 Ma。武夷山北緣侏羅紀(jì)巖漿活動(dòng)也有大量的報(bào)道和記錄,如孟祥金等[4546]認(rèn)為冷水坑地區(qū)的火山巖時(shí)代為160~146 Ma,Wang等[47]獲得了閩西北地區(qū)I型花崗巖的時(shí)代為161 Ma。本文年代學(xué)結(jié)果及上述數(shù)據(jù)表明,華南東部晚侏羅世大規(guī)模巖漿作用形成的火山侵入巖在閩北邵武地區(qū)也有體現(xiàn),由于晚侏羅世—早白堊世處于華南構(gòu)造域轉(zhuǎn)換的特殊時(shí)期,因此,邵武地區(qū)玄武安山巖的厘定對(duì)于進(jìn)一步闡明華南大地構(gòu)造演化具有很好的指示意義。

4.2? 巖石成因

玄武安山巖中相對(duì)低MgO、TFe2O3質(zhì)量分?jǐn)?shù),低Mg#值(標(biāo)準(zhǔn)地幔的Mg#值為68~75[48]),貧不相容元素 Ni、Co、V,富Al2O3 、Na2O、Sr等,均顯示出演化巖漿的特點(diǎn)。微量元素蛛網(wǎng)圖(圖8b)中Sr、P、Ti元素的虧損可能與斜長(zhǎng)石、磷灰石和FeTi氧化物的分離結(jié)晶有關(guān)。稀土元素配分曲線圖(圖8a)中,樣品中弱的Eu負(fù)異常(δEu=0.76~0.84)也暗示了可能存在角閃石或斜長(zhǎng)石的分離結(jié)晶。w(Sm)w(Rb)圖(圖9a)中可見(jiàn)樣品主要分布于含角閃石的分離結(jié)晶趨勢(shì)線附近。根據(jù) 100(Fe+Mg+Mn)/Ti100Si/Ti圖解(圖9b),邵武地區(qū)玄武安山巖樣品數(shù)據(jù)分布于單斜輝石分離結(jié)晶線附近,同樣說(shuō)明巖漿演化過(guò)程中發(fā)生了以單斜輝石為主的分離結(jié)晶作用。結(jié)合上述特征,筆者認(rèn)為玄武安山巖巖漿演化過(guò)程中發(fā)生了一定的結(jié)晶分異作用。

玄武安山巖的SmNd同位素組成特征顯示,它們具有較小的εNd(t)值,從原始地幔標(biāo)準(zhǔn)化微量元素蛛網(wǎng)圖(圖8b)中可見(jiàn),樣品顯示出 Nb、Ta強(qiáng)烈虧損,Pb 正異常和 Ti 弱負(fù)異常,造成這種特征的原因可能為:1)源區(qū)富集,即巖漿源區(qū)存在有因俯沖進(jìn)入地幔的地殼物質(zhì)組分;2)玄武安山巖在形成過(guò)程中受到了強(qiáng)烈的地殼物質(zhì)混染。物質(zhì)組成方面,Nb/Ta值在巖漿形成之后基本上能夠保持不變,對(duì)于反映巖漿源區(qū)有很好的指示意義。地殼物質(zhì)相對(duì)于地幔熔體具有較低的Nb、Ta質(zhì)量分?jǐn)?shù),較低的Nb/Ta值(地殼中Nb/Ta=8.33~13.33,地幔中Nb/Ta=18.27[49])和較高的Th質(zhì)量分?jǐn)?shù);相比于原始巖漿,地殼混染后的巖漿具有較高的Th/Nb(>5)和Th/Ta(>10)值[48],而樣品中Nb/Ta值為14.98~23.89,Th/Nb和Th/Ta值分別為0.30~0.41和5.40~8.15。據(jù)上述特征,認(rèn)為邵武玄武安山巖巖漿并未表現(xiàn)出明顯地殼混染的特征。另一方面,其他研究表明,高場(chǎng)強(qiáng)元素中Zr/Hf值對(duì)于巖漿源區(qū)的區(qū)分具有很好的指示意義,如地幔中Zr/Hf值約為50,而地殼中Zr/Hf值約為36[50]。樣品中Zr/Hf值為38.85~40.19,指示邵武玄武安山巖的形成過(guò)程又涉及到一定殼源物質(zhì)加入。巖漿上升過(guò)程中,無(wú)論是上地殼還是下地殼的混染,在造成巖漿 Pb 正異常的同時(shí),均能夠?qū)е禄烊編r漿中 Ti 質(zhì)量分?jǐn)?shù)降低從而引起 Ti 的負(fù)異常[51],樣品中具有明顯的Pb 正異常和Ti負(fù)異常,表明有地殼物質(zhì)的加入。稀土元素配分曲線圖(圖8a)中,樣品曲線與OIB曲線樣式相似,但其微量元素中卻表現(xiàn)為Nb、Ta負(fù)異常及Pb正異常等,顯示出富集型地幔的特征。另外,玄武安山巖內(nèi)部鋯石εHf(t)值為很小的負(fù)值,表明其源區(qū)主要來(lái)自古老的地殼物質(zhì)。樣品εHf(t)和εNd(t)均具有很小的負(fù)值,分別為-14.33~-8.98和-9.2~-8.4,這在東南沿海地區(qū)的鎂鐵質(zhì)火成巖是很少見(jiàn)的[52]。相反地,這種情況在長(zhǎng)英質(zhì)巖石中較常見(jiàn),如Zhao等[53]獲得了南嶺地區(qū)晚侏羅世桃山花崗質(zhì)巖石較低的εHf(t)(-14.3~-4.8)和εNd(t)(-11.2~-8.8)值,并根據(jù)地球化學(xué)特征認(rèn)為它們?cè)从诠爬献兂练e巖的部分熔融。Li等[54]得出晚侏羅世佛岡巖基的εHf(t)和εNd(t)值分別為(-11.5~-3.1)、(-12.2~-4.3),屬于古元古代中基性巖的部分熔融產(chǎn)物。劉高峰等[55]報(bào)道了遂川晚侏羅世花崗巖εHf(t)值為(-19.5~-8.5),代表了深部熱驅(qū)動(dòng)下古老地殼熔融的產(chǎn)物。類似的巖石在紫金山、溈山等其他地區(qū)也均有報(bào)道[5658]。華夏地塊東部古老基底的εHf(t)和εNd(t)值分別在<-10和-16~-8。因此,結(jié)合本次研究得出的玄武安山巖εHf(t)和εNd(t)較小的負(fù)值,本文認(rèn)為邵武玄武安山巖源區(qū)在發(fā)生部分熔融之前就已經(jīng)發(fā)生了富集,幔源巖漿不斷底侵到中、下地殼,破壞并置換了原有的老地殼,兩者在源區(qū)發(fā)生相互作用,并通過(guò)部分熔融產(chǎn)生了母巖漿,同時(shí)也將古老地殼和地幔的部分地球化學(xué)信息傳遞到母巖中,隨后通過(guò)演化形成了玄武安山巖。在巖漿演化和發(fā)展過(guò)程中并未經(jīng)歷明顯的地殼混染。

4.3? 大地構(gòu)造意義

大量研究表明,在中—晚侏羅世,華南地區(qū)發(fā)生了擠壓到板內(nèi)伸展的構(gòu)造體制轉(zhuǎn)變[11,54,5960]。但對(duì)于具體構(gòu)造轉(zhuǎn)換的時(shí)間仍存在爭(zhēng)議。Shi等[10]認(rèn)為,隨著俯沖角度的變化,構(gòu)造背景從火山弧轉(zhuǎn)變?yōu)橹匈_世(165~150 Ma)的弧后伸展,這對(duì)應(yīng)著區(qū)域構(gòu)造應(yīng)力場(chǎng)從擠壓向伸展的轉(zhuǎn)變。余心起等[61]通過(guò)沉積盆地研究,指出中國(guó)東南部早—中侏羅世普遍為拉張裂陷沉積環(huán)境,在泛濫平原環(huán)境中有裂陷型盆地共生。而其他學(xué)者[6,10,1217,45,47,62110]認(rèn)為伸展作用在晚侏羅世才開(kāi)始,中侏羅世為擠壓環(huán)境(表6)。Su等[111]提出,晚侏羅世發(fā)生了有限的地幔上升流,暗示了從擠壓到伸展的過(guò)渡階段。Li等[112]指出,中—晚侏羅世太平洋板塊持續(xù)北西向俯沖造成了大面積的擠壓作用,在南嶺地區(qū)發(fā)生了板片撕裂,形成了近EW向的裂谷帶。舒良樹(shù)[27]也表示,在中侏羅世(190~160 Ma)期間東南沿海地區(qū)遭受了強(qiáng)烈擠壓,此時(shí)南嶺地區(qū)為拉張環(huán)境,主要發(fā)育雙峰式火山巖、層狀基性雜巖體、A型花崗巖等。

邵武地區(qū)玄武安山巖具有高Zr/Y、Th/Hf、Ta/Hf值,在構(gòu)造環(huán)境判別圖中,主要位于板內(nèi)玄武巖區(qū)和大陸拉張帶(初始裂谷)玄武巖區(qū)(圖10),指示出玄武安山巖是在中侏羅世晚期(161.0 Ma)板塊內(nèi)部拉張環(huán)境下形成的。根據(jù)華南板塊內(nèi)火成巖地球化學(xué)的差異性及變化規(guī)律,古太平洋板塊俯沖過(guò)程中,中生代經(jīng)歷了板片的回撤過(guò)程[113117],而不均一的板片后撤能夠?qū)е掳迤毫眩?13,118121],這就引發(fā)了明顯的伸展作用,并導(dǎo)致軟流圈物質(zhì)上涌、底侵、置換華夏板塊古老地殼物質(zhì),從而形成富集源區(qū)。

結(jié)合前人研究成果,本文支持研究區(qū)在中侏羅世晚期屬于拉張環(huán)境的觀點(diǎn),即區(qū)域伸展作用在中侏羅世晚期已經(jīng)有所體現(xiàn)。但另一方面,構(gòu)造地質(zhì)學(xué)[11]、沉積學(xué)[26]、巖石學(xué)[13,122]等證據(jù)顯示出中侏羅世東南沿海發(fā)育強(qiáng)烈的擠壓應(yīng)力場(chǎng),結(jié)合前人數(shù)據(jù)及本次研究結(jié)果,認(rèn)為該地區(qū)屬于整體擠壓背景下的局部伸展環(huán)境。邢光福等[6]指出中—晚侏羅世華南處于擠壓還是拉張環(huán)境這一爭(zhēng)議的原因在于,火山巖主要沿張性斷裂上升侵位或噴發(fā),但這種張性斷裂有可能是區(qū)域整體擠壓背景下局部存在拉張;基于金華地區(qū)花崗巖類的地球化學(xué)分析,高萬(wàn)里[74]指出由于古太平洋板塊俯沖的后退,華南板塊經(jīng)歷了從整體擠壓和局部伸展背景(中侏羅世)到大規(guī)模伸展背景(晚侏羅世)的轉(zhuǎn)變。因此,本文認(rèn)為邵武地區(qū)火山作用發(fā)生于板內(nèi)伸展,表明中侏羅世晚期在東南沿海的俯沖的背景下仍局部存在伸展環(huán)境,這源于板塊回撤引發(fā)的拉伸,同時(shí)也誘發(fā)了俯沖帶深部地幔物質(zhì)與地殼的混合、置換等作用。

5? 結(jié)論

1)LAICPMS 鋯石 UPb 同位素定年結(jié)果表明,邵武地區(qū)玄武安山巖形成時(shí)代為中侏羅世晚期((161.0±2.0) Ma),指示出閩北地區(qū)存在中侏羅世晚期的一期巖漿作用。

2)邵武地區(qū)玄武安山巖為鈣堿性玄武巖,巖石富集輕稀土及大離子親石元素Rb、Ba 和K,高場(chǎng)強(qiáng)元素Nb、Ta、Ti和P相對(duì)虧損。地球化學(xué)特征指示其母巖漿應(yīng)是由拉張環(huán)境下的富集型巖石圈地幔部分熔融產(chǎn)生,經(jīng)歷一定結(jié)晶分異作用,其地殼混染作用不明顯。

3)邵武地區(qū)玄武安山巖指示中侏羅世晚期東南沿海地區(qū)俯沖背景下,板片發(fā)生回撤導(dǎo)致局部拉張。

參考文獻(xiàn)(References):

[1]? 路鳳香,桑隆康.巖石學(xué)[M].北京:地質(zhì)出版社,2002.

Lu Fengxiang, Sang Longkang. Petrology[M]. Beijing:

Geological Publishing? House, 2002.

[2]? Bowen N L. The Evolution of the Igneous Rocks[M]. New York: Princeton University Press,1928.

[3]? 王強(qiáng),趙振華,許繼峰,等.天山北部石炭紀(jì)埃達(dá)克巖高鎂安山巖富Nb島弧玄武質(zhì)巖:對(duì)中亞造山帶顯生宙地殼增生與銅金成礦的意義[J].巖石學(xué)報(bào),2006,22(1):1130.

Wang Qiang, Zhao Zhenhua, Xu Jifeng, et al. Carboniferous Dakite-High-Mg AndesiteNbEnriched Basaltic Rock in the Northern Tianshan: Implications for Phanerozoic Crustal Growth in the Central Asian Orogenic Belt and CuAu Mineralization[J].Acta Petrologica Sinica, 2006, 22(1): 1130.

[4]? 趙子福,代富強(qiáng),陳啟.大陸板片地幔相互作用:來(lái)自大別造山帶碰撞后安山質(zhì)火山巖的地球化學(xué)證據(jù)[J]. 地球科學(xué),2019,44(12):41194127.

Zhao Zifu, Dai Fuqiang, Chen Qi. Continental Slab-Mantle Interaction: Geochemical Evidence from Post-Collisional Andesitic Rocks in the Dabie Orogen[J]. Earth Science, 2019, 44(12): 41194127.

[5]? 婁元林,唐僥,李毅,等.西藏古堆地區(qū)巖漿巖基本特征及對(duì)成礦的響應(yīng)[J].黃金,2022,43(1):2027.

Lou Yuanlin, Tang Yao, Li Yi,et al. Fundamental Characteristics and Metallogenic Response of the Magmatic Rocks in Gudui Area,Tibet[J].Gold, 2022, 43(1): 2027.

[6]? 邢光福,盧清地,陳榮,等.華南晚中生代構(gòu)造體制轉(zhuǎn)折結(jié)束時(shí)限研究:兼與華北燕山地區(qū)對(duì)比[J].地質(zhì)學(xué)報(bào),2008,82(4):451463.

Xing Guangfu, Lu Qingdi, Chen Rong, et al. Study on the Ending Time of Late Mesozoic Tectonic Regime Transition in South China:Comparing to the Yanshan Area in North China[J].Acta Geologica Sinica, 2008, 82(4): 451463.

[7]? Mao J W, Cheng Y B, Chen M H, et al. Major Types and Time-Space Distribution of Mesozoic Ore Deposits in South China and Their Geodynamic Settings[J].Mineralium Deposita, 2013, 48: 267294.

[8]? 彭松柏,劉松峰,林木森,等.華夏早古生代俯沖作用Ⅱ:大爽高鎂鎂質(zhì)安山巖新證據(jù)[J].地球科學(xué),2016,41(6):931947.

Peng Songbai, Liu Songfeng, Lin Musen, et al. Early Paleozoic Subduction in Cathaysia Ⅱ: New Evidence for the Dashuang High Magnesian-Magnesian Andesite[J]. Earth Science, 2016, 41(6): 931947.

[9]? 陳毓川,王登紅,徐志剛,等.中國(guó)重要礦產(chǎn)和區(qū)域成礦規(guī)律[M].北京:地質(zhì)出版社,2015.

Chen Yuchuan, Wang Denghong, Xu Zhigang, et al. Important Mineral and Regularity in China[M].Beijing: Geological Publishing? House, 2015.

[10]? Shi H S, Xu C H, Zhou Z Y, et al. Zircon UPb Dating on Granitoids from the Northern South China Sea and Its Geotectonic Relevance[J].Acta Geologica Sinica, 2011, 85(6): 13591372.

[11]? 張?jiān)罉?,董?shù)文,李建華,等.華南中生代大地構(gòu)造研究新進(jìn)展[J].地球?qū)W報(bào),2012,33(3):257279.

Zhang Yueqiao, Dong Shuwen, Li Jianhua, et al. The New Progress in the Study of Mesozoic Tectonics of South China[J].Acta Geoscientica Sinica, 2012, 33(3): 257279.

[12]? Zhao J L, Qiu J S, Liu L. Early-Middle Jurassic Magmatic Rocks Along the Coastal Region of Southeastern China: Petrogenesis and Implications for Paleo-Pacific Plate Subduction[J].??? Journal of Asian Earth Sciences, 2021, 210(1): 104687.

[13]? 張偉,吳鴻翔,朱孔陽(yáng),等.華南東部陸緣侏羅紀(jì)巖漿作用特征及其構(gòu)造背景:來(lái)自浙東南毛弄組火山巖的新證據(jù)[J].巖石學(xué)報(bào),2018,34(11):33753398.

Zhang Wei, Wu Hongxiang, Zhu Kongyang, et al. The Jurassic Magmatism and Its Tectonic Setting in the Eastern Margin of South China: Evidence from the Volcanic Rocks of the Maonong Formation in the SE Zhejiang[J].Acta Petrologica Sinica, 2018, 34(11): 33753398.

[14]? Yuan W, Yang Z Y, Zhao X X, et al.Early Jurassic Granitoids from Deep Drill Holes in the East China Sea Basin: Implications for the Initiation of Palaeo-Pacific Tectono-Magmatic Cycle[J].International Geology Review, 2018, 60(7): 813824.

[15]? 邢新龍.浙閩交界地區(qū)侏羅紀(jì)—白堊紀(jì)火山活動(dòng)年代學(xué)與巖石成因研究[D].成都:成都理工大學(xué),2016.

Xing Xinlong. Chronology and Petrogenesis of Jurassic-Cretaceous Volcanism in the Area of Zhejiang-Fujian Boundary[D].Chengdu: Chengdu University of Technology, 2016.

[16]? Yan Q S, Shi X F, Liu J H, et al. Petrology and Geochemistry of Mesozoic Granitic Rocks from the Nansha Micro-Block, the South China Sea: Constraints on the Basement Nature[J].Journal of Asian Earth Sciences, 2010, 37(2): 130139.

[17]? Jiang Y H, Jiang S Y, Dai B Z, et al. Middle to Late Jurassic Felsic and Mafic Magmatism in Southern Hunan Province,Southeast China:Implications for a Continental Arc to Rifting[J].Lithos, 2009, 107: 185204.

[18]? Chen J F, Foland K A, Xing F M, et al. Magmatism Along the Southeast Margin of the Yangtze Block: Precambrian Collision of the Yangtze and Cathaysia Blocks of China[J]. Geology, 1991, 19: 815818.

[19]? Charvet J. The Neoproterozoic-First Paleozoic Tectonic Evolution of the South China Block: An Overview[J]. Asian Earth Sci, 2013, 74: 198209.

[20]? Li J H, A Cawood P, Ratschbacher L, et al. Building Southeast China in the Late Mesozoic: Insights from Alternating Episodes of Shortening and Extension Along the Lianhuashan Fault Zone[J].Earth-Science Reviews, 2020, 201: 103056.

[21]? Shu L S, Yao J L, Wang B, et al. Neoproterozoic Plate Tectonic Process and Phanerozoic Geodynamic Evolution of the South China Block[J].Earth-Science Review, 2021, 216: 103596.

[22]? Maruyama S. Pacific-Type Orogeny Revisited: Miyashiro-Type Orogeny Proposed[J].Island Arc, 1997,

6: 91120.

[23]? Shu L S, Wang B, Cawood P A, et al. Early Paleozoic and Early Mesozoic Intraplate Tectonic and Magmatic Events in the Cathaysia Block, South China[J].Tectonics, 2015, 34: 16001621.

[24]? 段政,刑光福,余明剛,等.東南沿海早白堊世火山巖的極低級(jí)變質(zhì)作用研究[J].巖石學(xué)報(bào),2018,34(3):656668.

Duan Zheng, Xing Guangfu, Yu Minggang, et al. Very Low-Grade Metamorphism of Early Cretaceous Volcanic Rocks in the Southeast Coastal of China[J]. Acta Petrologica Sinica,2018, 34(3): 656668.

[25]? 李三忠,李璽瑤,趙淑娟,等.全球早古生代造山帶:Ⅲ:華南陸內(nèi)造山[J].吉林大學(xué)學(xué)報(bào)(地球科學(xué)版),2016,46(4):10051025.

Li Sanzhong, Li Xiyao, Zhao Shujuan, et al. Global Early Paleozoic Orogenic Belt :Ⅲ: Intracontinental Orogenic in South China[J].Journal of Jilin University (Earth Science Edition), 2016, 46(4): 10051025.

[26]? 薛懷民,馬芳,宋永勤,等.江南造山帶東段新元古代花崗巖組合的年代學(xué)和地球化學(xué):對(duì)揚(yáng)子與華夏地塊拼合時(shí)間與過(guò)程的約束[J].巖石學(xué)報(bào),2010,26(11):32153244.

Xue Huaimin, Ma Fang, Song Yongqin, et al. Geochronology and Geochemistry of the Neoproterozoic Granitoid Association from Eastern Segmrnent of the Jiangnan Orogen China: Constraints on the Time and Process of Amalgamation Between the Yangtze and Cathaysia Blocks[J].Acta Petrologica Sinica, 2010, 26(11): 32153244.

[27]? 舒良樹(shù).華南構(gòu)造演化的基本特征[J].地質(zhì)通報(bào),2012,31(7):10351053.

Shu Liangshu. An Analysis of Principal Features of Tectonic Evolution in South China Block[J].Geological Bulletin of China, 2012, 31(7): 10351053.

[28] ?陳正宏,李寄嵎,謝佩珊,等.利用EMP獨(dú)居石定年法探討浙閩武夷山地區(qū)變質(zhì)基底巖石與花崗巖的年齡[J].高校地質(zhì)學(xué)報(bào),2008,14(1):115.

Chen Zhenghong, Li Jiyu, Xie Peishan, et al. Approsching the Age Problem for Some Metamorphosed Precambrian Basement Rocks and Phanerozoic Granitic Bodies in the Wuyishan Area: The Application of EMP Monazite Age Dating[J].Geological Journal of China Universities, 2008, 14(1): 115.

[29]? Yu J H, OReilly S Y, Zhou M F, et al. UPb Geochronology and HfNd Isotopic Geochemistry of the Badu Complex, Southeastern China: Implications for the Precambrian Crustal Evolution and Paleogeography of the Cathaysia Block[J].Precambrian Research, 2012, 222/223: 424449.

[30]? 福建省713地質(zhì)隊(duì).1∶20萬(wàn)順層幅地質(zhì)圖及說(shuō)明書(shū)[R].福州:福建省地質(zhì)調(diào)查局,1971.

Fujian Province 713 Geological Team.1∶200 000 Along the Strata Geological Map and Description[R].Fuzhou: Fujian Provincial Geological Survey, 1971.

[31]? Hou K J, Li Y H, Tian Y Y. In Situ UPb Zircon Dating Using Laser Ablation-Multi Ion Counting-ICP-MS[J]. Mine?? Depos, 2009, 28: 481492.

[32]? Wang Y X, Yang J D, Chen J, et al. The Sr and Nd Isotopic Variations of the Chinese Loess Plateau During the Past 7 Ma: Implications for the East Asian Winter Monsoon and Source Areas of Loess[J].Palaeogeography, Palaeoclimatology, Palaeoecology, 2007, 249(3/4): 351361.

[33]? Lapierre H, Bosch D, Narros A, et al. The Mamonia Complex (SW Cyprus)Revisited: Remnant of Late Triassic Intra-Oceanic Volcanism Along the Tethyan Southwestern Passive Margin[J].Geological Magazine, 2007, 144(1): 19.

[34]? 王碩,李志謙,劉云華,等.延邊赤衛(wèi)溝金礦床成礦物質(zhì)來(lái)源及成礦機(jī)制研究[J].黃金,2023,44(2):6066.

Wang Shou, Li Zhiqian, Liu Yunhua, et al. Sources of Metallogenic Materials and Metallogenic Mechanism of Chiweiguo Gold Deposit, Yanbian[J].Gold, 2023, 44(2): 6066.

[35]? Hastie A R, Kerr A C, Pearce J A, et al. Classification of Altered Volcanic Island Arc Rocks Using Immobile Trace Elements: Development of the Th-Co Discrimination Diagram[J].Journal of Petrology, 2007, 48(12): 23412357.

[36]? Winchester J A, Floyd P A. Geochemical Discrimination of Different Magma Series and Their Differentiation Products Using Immobile Elements[J]. Chemical Geology, 1977, 20: 325343.

[37]? 王俊德,湯立偉,杜慶安,等.福建吉花金銀礦床地質(zhì)特征及含礦蝕變帶元素遷移對(duì)區(qū)域成礦的啟示[J].黃金,2024,45(3):5566.

Wang Junde, Tang Liwei, Du Qingan, et al. Geological Characteristics of Jihua Gold-Silver Deposit in Fujian and Implications of Element Migration in the Ore-Bearing Alteration Zone for Regional Mineralization[J].Gold, 2024, 45(3): 5566.

[38]? Sun S S, McDonough W F. Chemical and Isotopic Systematics of Oceanic Basalts: Implications for Mantle Composition and Processes[J].Geological Society, London, Special Publications, 1989, 42(1): 313345.

[39]? Jacobson S B, Wasserburg G J. SmNd Isotopic Evolution of Chondrites[J].Earth and Planetary Science Letters, 1980, 50(1): 139155.

[40]? 朱玉磷,張金塔.對(duì)福建西部早古生代地層劃分及對(duì)比問(wèn)題的商榷[J].福建地質(zhì),1988,7:142161.

Zhu Yulin, Zhang Jinta. A Discussion on the Classifcation and Correlation of the Early Palaeozoic Strata in Western Fujian Province[J].Geology of Fujian, 1988, 7: 142161.

[41]? 舒良樹(shù).華南前泥盆紀(jì)構(gòu)造演化:從華夏地塊到加里東期造山帶[J].高校地質(zhì)學(xué)報(bào),2006,12(4):418431.

Shu Liangshu. Predevonian Tectonic Evolution of South China: From Cathaysian Block to Caledonian Period Folded Orogenic Belt[J].?? Geological Journal of China Universities, 2006, 12(4): 418431.

[42]? Wang D S, Li J W, She H Q, et al. Late Jurassic Volcanism Deduced from Geochemical, Geochronological, and SrNdHf Isotopic Composition Characteristics of the Nanyuan Formation, South China[J].Acta Geologica Sinica, 2023, 97(2): 449468.

[43]? Chen P R, Hua R M, Zhang B T, et al. Early Yanshanian Post-Orogenic Granitoids in the Nanling RegionPetrological Constraints and Geodynamic Settings[J]. Science in China (Series D), 2002, 45(8): 755768.

[44]? Liu L, Xu X S, Zou H B. Episodic Eruptions of the Late Mesozoic Volcanic Sequences in Southeastern Zhejiang, SE China: Petrogenesis and Implications for the Geodynamics of Paleo-Pacific Subduction[J].Lithos, 2012, 154: 166180.

[45]? 孟祥金,徐文藝,楊竹森,等.江西冷水坑礦田火山巖漿活動(dòng)時(shí)限:SHRIMP鋯石UPb年齡證據(jù)[J].礦床地質(zhì),2012,31(4):831838.

Meng Xiangjin, Xu Wenyi, Yang Zhusen, et al. Time Limit of Volcanic-Magmatic Action in Lengshuikeng Orefield,Jiangxi:Evidence from SHRIMP Zircon UPb Ages[J]. Mineral Deposits, 2012, 31(4): 831838.

[46]? 邱駿挺,余心起,吳淦國(guó),等.江西冷水坑礦區(qū)構(gòu)造巖漿活動(dòng)的年代學(xué)約束[J].巖石學(xué)報(bào),2013,29(3):812826.

Qiu Junting, Yu Xinqi, Wu Ganguo, et al. Geochronology of Igneous Rocks and Nappe Structures in Lengshuikeng Deposit,Jiangxi Province,China[J].Acta Petrologica Sinica, 2013, 29(3): 812826.

[47]? Wang G C, Jiang Y H, Liu Z, et al. Multiple Origins for the Middle Jurassic to Early Cretaceous High-K Calc-Alkaline I-Type Granites in Northwestern Fujian Province, SE China and Tectonic Implications[J].Lithos, 2016, 246/247: 197211.

[48]? Neal C R, Mahoney J J, Chazey W J. Mantle Sources and the Highly Variable Role of Continental Lithosphere in Basalt Petrogenesis of the Kerguelen Plateau and Broken Ridge LIP: Results from ODP Leg 183[J].Journal of Petrology, 2002, 43(7): 11771205.

[49]? Hofmann A W. Chemical Differentiation of the Earth: The Relationship Between Mantle, Continental Crust, and Oceanic Crust[J].Earth and Planetary Science Letters, 1988, 90(3): 297314.

[50]? Anderson D L. Chemical Composition of the Mantle Journal of Geophysical Research[J].Solid Earth, 1983, 88(Sup.1): 4152.

[51]? 秦社彩,范蔚茗,郭鋒.江紹斷裂帶晚中生代鎂鐵質(zhì)火山巖成因及其深部過(guò)程意義[J].巖石學(xué)報(bào),2019,35(6):18921906.

Qin Shecai, Fan Weiming, Guo Feng. Petrogenesis and Geodynamic Implications of Late Mesozoic Mafic Volcanic Rocks Along the Jiangshan-Shaoxing Fault in SE China[J].Acta Petrologica Sinica,2019, 35(6): 18921906.

[52]? 繆柏虎,徐兆文,王浩,等.山東鄒平青山下亞組玄武安山巖源區(qū)性質(zhì)及成因[J].地質(zhì)學(xué)報(bào),2015,89(1):3748.

Miao Bohu, Xu Zhaowen, Wang Hao, et al. Genesis and Source Characteristice of Basalitic Andesite for Lower Qinshan Formation in Zouping Volcanic Basin, Shangdong Province[J].Acta Geologica Sinica, 2015,89(1): 3748.

[53]? Zhao Z F, Gao P, Zheng Y F. The Source of Mesozoic Granitoids in South China: Integrated Geochemical Constraints from the Taoshan Batholith in the Nanling Range[J].Chem Geol, 2015, 395: 1126.

[54]? Li X H, Li Z X, Li W X, et al. UPb Zircon, Geochemical and SrNdHf Isotopic Constraints on Age and Origin of Jurassic I-and A-Type Granites from Central Guangdong, SE China: A Major Igneous Event in Response to Foundering of a Subducted Flat-Slab? [J].Lithos, 2007, 96 (1/2): 186204.

[55]? 劉高峰,王連訓(xùn),羅春林,等.贛南遂川晚侏羅世幕式花崗質(zhì)巖漿活動(dòng):年代學(xué)、地球化學(xué)和LuHf同位素約束[J].巖石學(xué)報(bào),2023,39(8):24892510.

Liu Gaofeng, Wang Lianxun, Luo Chunlin, et al. Late Jurassic Episodic Granitic Magmatism in Suichuan, Southern Jiangxi: Constraints from Chronology, Geochemistry and LuHf Isotope[J].Acta Petrologica Sinica, 2023, 39(8): 24892510.

[56]? Jiang S H, Liang Q L, Bagas L, et al. Geodynamic Setting of the Zijinshan Porphyry-Epithermal CuAuMoAg Ore System, SW Fujian Province, China: Constrains from the Geochronology and Geochemistry of the Igneous Rocks[J].Ore Geology Reviews, 2013, 53: 287305.

[57]? Ding X, Sun W D, Chen W F, et al. Multiple Mesozoic Magma Processes Formed the 240185 Ma Composite Weishan Pluton, South China: Evidence from Geochronology, Geochemistry, and SrNd Isotopes Int[J]. International Geology Review, 2015, 57 (9/10): 11891217.

[58]? Xu X B. Late Triassic to Middle Jurassic Tectonic Evolution of the South China Block:Geodynamic Transition from the Paleo-Tethys to the Paleo-Pacific Regimes[J].Earth-Science Reviews, 2023, 241: 104404.

[59]? 陳培榮,周新民,張文蘭,等.南嶺東段燕山早期正長(zhǎng)巖花崗巖雜巖的成因和意義[J].中國(guó)科學(xué)(D輯),2004,34(6):493503.

Chen Peirong, Zhou Xinmin, Zhang Wenlan, et al. The Origin and Significance of Early Syenite-Granite Hybrid Rocks in the Eastern Section of Nanling[J].Sciences in China (Series? D), 2004, 34(6): 493503.

[60]? Zhou X M, Sun T, Shen W Z, et al. Petrogenesis of Mesozoic Granitoids and Volcanic Rocks in South China: A Response to Tectonic Evolution[J].Episodes, 2006, 29(1): 2633.

[61]? 余心起,舒良樹(shù),鄧平,等.中國(guó)東南部侏羅紀(jì)—第三紀(jì)陸相地層沉積特征[J].地層學(xué)雜志,2003,27(3):254263.

Yu Xinqi, Shu Liangshu, Deng Ping, et al. The Sedimentary Features of the Jurassic-Tertiary Terrestrial Strata in Southeast China[J].Journal of Stratigraphy, 2003, 27(3): 254263.

[62]? 張建芳,解懷生,許興苗,等.浙江漓渚地區(qū)柵溪—廣山巖體地質(zhì)地球化學(xué)特征、構(gòu)造及找礦意義[J].中國(guó)地質(zhì),2013,40(2):403413.

Zhang Jianfang, Xie Huaisheng, Xu Xingmiao, et al. Geological and Geochemical Characteristics and Tectonic and Prospecting Significance of the Shanxi-Guangshan Intrusions in Lizhu Area, Zhejiang Province[J].Geology in China, 2013, 40(2): 403413.

[63]? Zhou Q, Jiang Y H, Zhao P, et al. Origin of the Dexing CuBearing Porphyries, SE China: Elemental and SrNdPbHf Isotopic Constraints[J]. International Geology Review, 2012, 54, 572592.

[64]? 郭博然,劉樹(shù)文,楊朋濤,等.江西臥龍谷花崗巖和銅廠花崗閃長(zhǎng)斑巖的地球化學(xué)特征及成因:對(duì)贛東北地區(qū)銅礦成礦地質(zhì)背景的制約[J].地質(zhì)通報(bào),2013,32(7):10351046.

Guo Boran, Liu Shuwen, Yang Pengtao, et al. Petrology, Geochemistry and Petrogenesis of Wolonggu Granites and Tongchang Granodioritic Porphyries: Constraints on Copper Metallogenic Geological Settings in Northeastern Jiangxi Province[J]. Geological Bulletin of China, 2013, 32(7): 10351046.

[65]? Yan X, Jiang S Y, Jiang Y H. Geochronology, Geochemistry and Tectonic Significance of the Late Mesozoic Volcanic Sequences in the Northern Wuyi Mountain Volcanic Belt of South China[J]. Gondwana Research, 2016, 37: 362383.

[66]? Li Y, Ma C Q, Xing G F, et al. Origin of a Cretaceous LowO18 Granitoid Complex in the Active Continental Margin of SE China[J].Lithos, 2015, 216/217: 136147.

[67]? Li B, Jiang S Y, Lu A H, et al. Petrogenesis of Late Jurassic Granodiorites from Gutian, Fujian Province, South China: Implications for Multiple Magma Sources and Origin of Porphyry CuMo Mineralization[J].Lithos, 2016, 264: 540554.

[68]? 劉潛,于津海,蘇斌,等.福建錦城187 Ma花崗巖的發(fā)現(xiàn):對(duì)華南沿海早侏羅世構(gòu)造演化的制約[J]. 巖石學(xué)報(bào),2011,27(12):35753589.

Liu Qian, Yu Jinhai, Su Bin, et al. Discovery of the 187 Ma Granite in Jincheng Area, Fujian Province: Constraint on Early Jurassic Tectonic Evolution of Southeasten China[J].Acta Petrologica Sinica, 2011, 27(12): 35753589.

[69]? Li Z, Qiu J S, Xu X S. Geochronological, Geochemical and SrNdHf Isotopic Constraints on Petrogenesis of Late Mesozoic Gabbro-Granite Complexes on the Southeast Coast of Fujian, South China: Insights into a Depleted Mantle Source Region and Crust-Mantle Interactions[J].Geological Magzine, 2012, 149(3): 459482.

[70]? Liu Q, Yu J H, Wang Q, et al. Ages and Geochemistry of Granites in the Pingtan-Dongshan Metamorphic Belt,Coastal South China: New Constraints on Late Mesozoic Magmatic Evolution[J]. Lithos, 2012, 150: 268286.

[71]? 修淳,張道軍,翟世奎,等.西沙島礁基底花崗質(zhì)巖石的鋯石UPb年齡及其地質(zhì)意義[J].海洋地質(zhì)與第四紀(jì)地質(zhì),2016,36(3):115126.

Xiu Chun, Zhang Daojun, Zhai Shikui, et al. Zircon UPb Age of Granitic Rocks from the Basement Beneath the Shi Island, Xisha Islands and Its Geological Significance[J].Marine Geology & Quaternary Geology, 2016, 36(3): 115126.

[72]? Jia D L, Yan G S, Ye T Z, et al. Zircon UPb Dating, Hf Isotopic Compositions and Petrochemistry of the Guangshan Granitic Complex in Shaoxing Area of Zhejiang Province and Its Geological Significance[J]. Acta Petrologica Sinica, 2013, 29(12): 40874103.

[73]? Wang D X, Gao W L, Li C L, et al. LAICPMS Zircon UPb Geochronology, Petrochemistry of the Late Jurassic Granite Porphyry in Central Zhejiang Province and Their Geological Significance[J].Geology in China, 2015, 42(6): 16841699.

[74]? 高萬(wàn)里.浙東南中生代巖漿活動(dòng)及其構(gòu)造背景研究[D].北京:中國(guó)地質(zhì)科學(xué)院,2014.

Gao Wanli. Research of Mesozoic Magmatism and Tectonic Setting in Southeast Zhejiang Province[D]. Beijing: Chinese Academy of Geological Sciences, 2014.

[75]? Wang J E, Liu Y D, Wang J G, et al. Age Assignment of the Moshishan Group Volcanic Rocks in the Lishui Area, Zhejiang Province[J].East China Geology, 2016, 37(3): 157165.

[76]? Qiu J T, Yu X Q, Wu G G, et al. Geochronology of Igneous Rocks and Nappe Structures in Lengshuikeng Deposit, Jiangxi Province, China[J].Acta Petrologica Sinica, 2013, 29(3): 812838.

[77]? Li J W, Zhao X F, Zhou M F, et al. Late Mesozoic Magmatism from the Daye Region, Eastern China: UPb Ages, Petrogenesis, and Geodynamic Implications[J]. Contributions to Mineralogy and Petrology, 2009, 157: 383409.

[78]? Li X H, Li W X, Wang X C, et al. SIMS UPb Zircon Geochronology of Porphyry CuAu(Mo) Deposits in the Yangtze River Metallogenic Belt, Eastern China: Magmatic Response to Early Cretaceous Lithos Pheric Extension[J].Lithos, 2010, 119: 427438.

[79]? Liu J, Mao J W, Ye H S, et al. Zircon LAICPMS UPb Dating of Hukeng Granite in Wugongshan Area, Jiangxi Province and Its Geochemical Characteristics[J].Acta Petrologica Sinica, 2008, 24(8): 18131822.

[80]? Wang J Q, Shu L S, Santosh M, et al. The Pre-Mesozoic Crustal Evolution of the Cathaysia Block, South China: Insights from Geological Investigation, Zircon UPb Geochronology, Hf Isotope and REE Geochemistry from the Wugongshan Complex[J].Gondwana Research, 2014, 28(1): 225245.

[81]? Ma T Q, Bai D Y, Kuang J, et al. Zircon SHRIMP Dating of the Xitian Granite Pluton, Chaling, Souteastern Hunan and Its Geological Significance[J].Geological Bulletin of China, 2005,24: 415419.

[82]? Fu J M, Ma C Q, Xie C F, et al. The Determination of the Formation Ages of the Xishan Volcanic-Intrusive Complex in Southern Hunan Province[J].Acta Geoscientia Sinica, 2004, 25: 303308.

[83]? Fu J M, Ma C Q, Xie C F, et al. SHRIMP UPb Zircon Dating of the Jiuyishan Composite Granite in Hunan? and Its Geological Significance[J].Geotectonica et Metallogenia, 2004, 28(4): 370378.

[84]? Lu Y F, Ma L Y, Qu W J, et al. UPb and ReOs Isotope Geochronology of Baoshan CuMo Polymetallic Ore Deposit in Hunan Province[J].Acta Petrologica Sinica, 2006, 22(10): 24832492.

[85]? 彌佳茹,袁順達(dá),軒一撒,等.湖南寶山大坊礦區(qū)成礦花崗閃長(zhǎng)斑巖的鋯石UPb年齡、Hf同位素及微量元素組成對(duì)區(qū)域成礦作用的指示[J].巖石學(xué)報(bào),2018,34(9):25482564.

Mi Jiaru, Yuan Shunda, Xuan Yisa, et al. Zircon UPb Ages,Hf Isotope and Trace Element Characteristics? of the Granodiorite Porphyry from the Baoshan-Dafang? Ore District, Hunan: Implications for Regional Metallogeny[J].Acta Petrologica Sinica, 2018, 34(9): 25482564.

[86]? Yuan Y B, Yuan S D, Chen C J, et al. Zircon UPb Ages and Hf Isotopes of the Granitoids in the Huangshaping Mining Area and Their Geological Significance[J].Acta Petrologica Sinica, 2014,30(1): 6478.

[87]? Zhu J C, Huang G F, Zhang P H, et al. On the Emplacement Age and Material Sources for the Granites of Cailing Supersuite, Qitianling Pluton, South Hunan Province[J]. Geological Review, 2003, 49: 245252.

[88]? Xu X S, OReilly S Y, Griffin W L, et al. Relict Proterozoic Basement in the Nanling Mountains (SE China) and Its Tectonothermal Overprinting[J].Tectonics,2005,24:116.

[89]? Huang H Q, Li X H, Li Z X, et al. Formation of the Jurassic South China Large Granitic Province: Insights from the Genesis of the Jiufeng Pluton[J].Chemical Geology, 2015, 401: 4358.

[90]? Guo C L, Wang D H, Chen Y C, et al. Precise Zircon SHRIMP UPb and Quartz Vein RbSr Dating of Mesozoic Taoxikeng Tungsten Polymetallic Deposit in Southern Jiangxi[J].Mineral Deposits, 2007, 20(4): 432442.

[91]? Zhang W L, Hua R M, Wang R C, et al. New Dating of the Piaotang Granite and Related Tungsten Mineraliztion in Southeastern Jiangxi[J].Acta Geolgica Sinica, 2009, 83(5): 659670.

[92]? Liu F Y, Wu J H, Liu S. Early Cretaceous Zircon SHRIMP UPb Age of the Trachyte and Its Significances of the Gan-Hang Belt[J]. Journal of East China Institute of Technology(Natural Science Edition), 2009, 32(4): 330335.

[93]? Feng C Y, Feng Y D, Xu J X, et al. Isotope Chronological Evidence for Upper Jurassic Petrogenesis and Mineralization of Altered GraniteType Tungsten Deposits in the Zhangtiantang Area, Southern Jiangxi[J]. Geologly in China, 2007, 34(4): 642650.

[94]? 張文蘭,華仁民,王汝成,等.贛南大吉山花崗巖成巖與鎢礦成礦年齡的研究[J]. 地質(zhì)學(xué)報(bào),2006,80(7): 956962.

Zhang Wenlan, Hua Renmin, Wang Rucheng, et al.New Dating of the Dajishan Granite and Related Tungsten Mineralization in Southern Jiangxi[J].Acta Geologica Sinica, 2006, 80(7): 956962.

[95]? Chen Z G, Li X H, Li W Y, et al. SHRIMP UPb Zircon Age of the Quannan Syenite, Southern Jiangxi: Constraints on the Early Yanshanian Tectonic Setting of? SE China[J].Geochimica, 2003, 32(3): 223229.

[96]? Yu J H, Zhou X M, Zhao L, et al. Mantle-Crust Interaction Generating the Wuping Granites: Evidenced from SrNdHfUPb Isotopes[J].Acta Petrologica Sinica, 2008, 21(3): 651664.

[97]? Wang L J, Yu J H, Xu X S, et al. Formation Age and Origin of the Gutian-Xiaotao Granitic Complex in the Southwestern Fujian Province, China[J].Acta Petrologica Sinica, 2007, 23(6): 14701484.

[98]? Huang H Q, Li X H, Li W X, et al. Age and Origin of the Dadongshan Granite from the Nanling Range: SHRIMP UPb Zircon Age, Geochemistry and SrNdHf Isotopes[J].Geological Journal of China Universities, 2008, 14(3): 317333.

[99]? Xu X S, Deng P, OReilly S Y, et al. Single Zircon LAICPMS UPb Dating of Guidong Complex (SE China) and Its Petrogenetic Significance[J].Chinese Science Bulletin, 2003, 48(17): 18921899.

[100]? Zhang W H, Wang C Z, Li X M, et al. A Primary Discussion on Magmatic Evolution Series in the Zijinshan Area, Fujian Province: Evidences from Zircon SIMS UPb Ages and Hf, O Isotopes[J].Bulletin of Mineralogy, Petrology and Geochemistry, 2017, 36(1): 98111.

[101]? Zhao X L, Mao J R, Chen R, et al. Zircon SHRIMP Age and Geochemical Characteristics of the Caixi Pluton in Southwestern Fujian Province[J].Acta Petrologica et Mineralogica, 2007, 26(3): 223231.

[102]? Li X H, Chung S L, Zhou H W, et al. Jurassic Intraplate Magmatism in Southern Hunan-Eastern Guangxi: 40Ar/39Ar Dating, Geochemistry, SrNd Isotopes and Implications for the Tectonic Evolution of SE China[J]. Geological Society, London, Special Publications, 2004, 226: 193215.

[103]? Li X H, Li W X, Wang X C, et al. Role of Mantle-Derived Magma in Genesis of Early Yanshanian Granites in the Nanling Range, South China: In Situ Zircon HfO Isotopic Constraints[J].Science in China (Series D), 2009, 52(9): 12621278.

[104]

朱金初,張佩華,謝才富,等.南嶺西段花山姑婆山侵入巖帶鋯石UPb年齡格架及其地質(zhì)意義[J].巖石學(xué)報(bào),2006,22(9):22702278.

Zhu Jinchu, Zhang Peihua, Xie Caifu, et al. Zircon UPb Age Framework of Huashan-Guposhan Intrusive Belt, Western Part of Nanling Range, and Its Geological Significance[J].Acta Petrologica Sinica, 2006, 22(9): 22702278.

[105]? 蔡永豐,劉風(fēng)雷,馮佐海,等.桂東北姑婆山巖體礦物學(xué)和年代學(xué)特征及其成巖成礦意義[J].吉林大學(xué)學(xué)報(bào)(地球科學(xué)版),2020,50(3):842856.

Cai Yongfeng, Liu Fenglei, Feng Zuohai, et al. Mineral Compositional and Chronological Characteristics of Guposhan Pluton? in Guangxi and Its Petrogenetic and Metallogenic Significance[J].Journal of Jilin University(Earth Science Edition), 2020, 50(3): 842856.

[106]? Li Z X, Li X H.Formation of the 1 300 km Wide Intracontinental Orogen and Postorogenic Magmatic Province in Mesozoic South China: A Flat-Slab Subduction Model[J].Geology, 2007, 35: 179182.

[107]? Xu X S, Lu W M, He Z Y. Age and Generation of Fogang Granite Batholith and Wushi Diorite-Hornblende Gabbro Body[J].Science in China (Series D), 2007, 37(1): 2738.

[108]? Qiu J S, Hu J, Wang X L, et al. The Baishigang Pluton in Heyuan, Guangdong Province: A Highly Fractionated IType Granite[J].Acta Geolgica Sinica, 2005, 79(4): 503514.

[109]? Huang H Q, Li X H, Li Z X, et al. Intraplate Crustal Rremelting as the Genesis of Jurassic HighK Granites in the Coastal Region of the Guangdong Province, SE China[J].Journal of Asian Earth Sciences, 2013, 74: 280302.

[110]? Campbell S, Sewell R, Davis D,et al. New UPb Age and Geochemical Constraints on the Stratigraphy and Distribution of the Lantau Volcanic Group, Hong Kong[J]. Journal of Asian Earth Sciences, 2007, 31: 139152.

[111]? Su H M, Mao J W, Santosh M, et al. Petrogenesis and Tectonic Significance of Late Jurassic-Early Cretaceous Volcanic-Intrusive Complex in the Tianhuashan Basin, South China[J].Ore Geology Reviews, 2014, 56: 566583.

[112]? Li C L, Wang Z X, Lü Q T, et al. Mesozoic Tectonic Evolution of the Eastern South China Block: A Review on the Synthesis of the Regional Deformation and Magmatism[J].Ore Geology Reviews, 2021, 131: 104028.

[113]? Peng H W, Fan H R, Jiang P,et al. Two-Stage Rollbacks of the Paleo-Pacific Plate Beneath the Cathaysia Block During Cretaceous: Insights from AType Granites and Volcanic Rocks[J].Gondwana Research, 2021, 97: 158175.

[114]? Li Z, Qiu J S,Yang X M. A Review of Geochronology and Geochemistry of Late Yanshanian (Cretaceous)Plutons Along the Fujian Coastal Area of Southeastern China: Implications for Magma Evolution Related to Slab Break-off and Rollback in the Cretaceous[J].Earth-Science Reviews, 2014, 128: 232248.

[115]? Liu L, Xu X S, Xia Y. Asynchronizing Paleo-Pacific Slab Rollback Beneath SE China: Insights from the Episodic Late Mesozoic Volcanism[J].Gondwana Research, 2016, 37: 397407.

[116]? Xia Y,? Xu X S, Liu L. Transition from Adakitic to Bimodal Magmatism Induced by the Paleo-Pacific Plate Subduction and Slab Rollback Beneath SE China: Evidence from Petrogenesis and Tectonic Setting of the Dike Swarms[J].Lithos, 2016, 244: 182204.

[117]? Zhao L, Guo F, Zhang X B,et al. Cretaceous Crustal Melting Records of Tectonic Transition from Subduction to Slab Rollback of the Paleo-Pacific Plate in SE[J]. Lithos, 2021, 384/385: 105982.

[118]? 郭鋒,趙亮,張曉兵,等.華南陸塊東部晚中生代巖漿作用的深部動(dòng)力學(xué)過(guò)程[J].大地構(gòu)造與成礦學(xué),2022,46(3):416434.

Guo Feng, Zhao Liang, Zhang Xiaobing, et al. Geodynamics of Late Mesozoic Magmatism in the Eastern South China Block: An Overview[J]. Geotectonica et Metallogenia, 2022, 46(3): 416434.

[119]? Guo F, Wu Y M, Zhang B,et al. Magmatic Responses? to Cretaceous Subducion and Tearing of the Paleo-Pacific Plate in SE China: An Overview[J]. Earth-Science Reviews, 2021, 212(1): 103448.

[120]? Guo F, Fan W M, Li C W, et al. Multi-Stage Crust-Mantle Interaction in SE China: Temporal, Thermal and Compositional Consstraints from the Mesozoic Felsic Volcanic Rocks in Eastern Guangdong-Fujian Provinces[J].Lithos, 2012, 150:6284.

[121]? Chen Y, Li W, Yuan X, et al. Tearing of the Indian Lithospheric Slab Beneath Southern Tibet Revealed by SKS-Wave Splitting Measurements[J].Earth and Planetary Science Letters, 2015, 413: 1324.

[122]? Li Z L, Zhou J, Mao J R, et al. Zircon UPb Geochronology and Geochemistry of Two Episodes of Granitoids from the Northwestern Zhejiang Province, SE China: Implication for Magmatic Evolution and Tectonic Transition[J]. Lithos, 2013, 179: 334352.

猜你喜歡
侏羅世安山巖玄武
奇特的智利龍
玄武
寶藏(2022年1期)2022-08-01 02:12:40
淺議大興安嶺北段霍洛臺(tái)地區(qū)早侏羅世侵入巖與礦產(chǎn)的關(guān)系
西藏拿若銅礦床安山巖元素地球化學(xué)特征研究?
玄武煙柳
寶藏(2018年1期)2018-01-31 02:05:09
王官屯油田安山巖油藏滾動(dòng)評(píng)價(jià)探索
激發(fā)極化法尋找固體礦產(chǎn)的應(yīng)用
中國(guó)遼寧首次發(fā)現(xiàn)侏羅紀(jì)多瘤齒獸類哺乳動(dòng)物
二連油田安山巖裂縫性儲(chǔ)層壓裂技術(shù)研究
過(guò)年忙
兒童繪本(2015年3期)2015-05-25 17:59:52