[1]范飛鵬,肖惠良,陳樂柱,等. 南嶺東段黃峰寨巖體SHRIMP鋯石U-Pb年齡及地質意義[J].華東地質,2016,37(03):166-173.[doi:10.16788/j.hddz.32-1865/P.2016.03.002]
 FAN Fei-peng,XIAO Hui-liang,CHEN Le-zhu,et al. SHRIMP zircon U-Pb dating of the Huangfengzhai pluton in eastern Nanling and its geological implications[J].East China Geology,2016,37(03):166-173.[doi:10.16788/j.hddz.32-1865/P.2016.03.002]
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 南嶺東段黃峰寨巖體SHRIMP鋯石U-Pb年齡及地質意義()
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《華東地質》[ISSN:2096-1871/CN:32-1865/P]

卷:
37
期數:
2016年03期
頁碼:
166-173
欄目:
基礎地質
出版日期:
2016-09-15

文章信息/Info

Title:
 SHRIMP zircon U-Pb dating of the Huangfengzhai pluton in eastern Nanling and its geological implications
文章編號:
2096-1871(2016)03-166-08
作者:
 范飛鵬肖惠良陳樂柱蔡逸濤李海立鮑曉明周 延
 (南京地質礦產研究所,南京 210016)
Author(s):
 FAN Fei-peng XIAO Hui-liang CHEN Le-zhu CAI Yi-taoLi Hai-liBAO Xiao-ming ZHOU Yan
 (Nanjing Institute of Geology and Mineral Resource,Nanjing 210016, China)
關鍵詞:
 南嶺東段 黃峰寨巖體 印支期 SHRIMP 鋯石 U-Pb年齡 Hf同位素
Keywords:
 theeastern Nanling Huangfengzhai pluton Indosinian SHRIMP zircon U-Pb age Hf isotope
分類號:
P558.12
DOI:
10.16788/j.hddz.32-1865/P.2016.03.002
文獻標志碼:
A
摘要:
黃峰寨巖體位于南嶺鎢錫多金屬成礦帶的東段,對該巖體中的石英二長巖進行SHRIMP鋯石U-Pb年齡測定、巖石學和地球化學研究。石英二長巖的SHRIMP鋯石U-Pb年齡為231±3 Ma,屬中三疊世晚期。巖石學和地球化學特征表明,該巖體具有高硅、富鋁、高鉀、中堿、高鈣的特征,屬高鉀鈣堿性系列弱過鋁質S型花崗巖類; 微量元素Sr、Ba、Nb、P、Ti強烈虧損,Rb、Th、Ce、Zr、Sm相對富集; 稀土元素總量高,輕稀土富集,輕、重稀土分異明顯,Eu中等負異常; Hf(t)為-15.25~-2.88,Hf兩階段模式年齡值為1.87~2.22Ga,表明黃峰寨巖體為上地殼底部基性巖部分熔融的產物,推測該巖體可能形成于同碰撞構造環境。
Abstract:
The Huangfengzhai pluton is located in the eastern sectionof tungsten-tin polymetallic metallogenic belt in the Nanling region. Thisstudy carried out SHRIMP zircon U-Pb dating and lithological and geochemical anlyzses for quartz monazites from the Huangfengzhai pluton. The results show thata zircon U-Pb age of quartz monzonite from the Huangfengzhai pluton is 231±3 Ma, belonging to late Middle Triassic. Lithological, mineralogical and geochemicalanalyses suggest that the pluton is rich in Si, Al and Ca, with medium alkali,indicating that the pluton belongs to high-K, calc-alkaline series, weakly-perluminous S-type granitoids. The pluton is also depleted in Sr, Ba, Nb, P and Ti, but relatively enriched in Rb, Th, Ce, Zr and Sm, with high ΣREE content, distinct LREE and HREE differentiation, and weak negative Eu anomalies. Zircon εHf(t)values range from -15.25 to -2.88 and Hf two-stage model age values are 1.87~2.22 Ga, indicating that the Huangfengzhai pluton was derived from partial melting of mafic rocks at the bottom of upper crust. It can be inferred that the Huangfengzhai pluton might form at a syncollosion tectonic setting.

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備注/Memo

備注/Memo:
收稿日期:2016-01-03 改回日期:2016-03-17
責任編輯:譚桂麗基金項目:中國地質調查局地質調查項目“江西竹山-廣東澄江地區鎢錫多金屬礦遠景調查”(項目編號:1212011120813)、“廣東始興南山坑-良源地區鎢錫多金屬礦評價”(項目編號:1212011120811)、“廣東始興-連平地區鎢鉬多金屬礦調查評價”(項目編號:1212010881305)和“湘贛粵相鄰地區鎢礦遠景調查”(項目編號:1212010533003)。
第一作者簡介:范飛鵬,1982年生,男,碩士,高級工程師,主要從事礦產資源勘查和礦床學研究工作。
更新日期/Last Update: 2016-09-19
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