赣南路迳似金伯利岩(金伯利质煌斑岩)锆石的特点和年龄及其构造意义

王登红; 陈振宇; 许建祥; 刘善宝

赣南路迳似金伯利岩(金伯利质煌斑岩)锆石的特点和年龄及其构造意义

1.
国土资源部成矿作用与资源评价重点实验室, 中国地质科学院矿产资源研究所, 北京 100037
2.
国土资源部成矿作用与资源评价重点实验室, 中国地质科学院矿产资源研究所, 北京 100037
3.
江西省国土资源厅, 江西南昌 330000
4.
国土资源部成矿作用与资源评价重点实验室, 中国地质科学院矿产资源研究所, 北京 100037

基金项目:

"我国三稀金属资源战略调查"项目(1212011120354)

国家深部探测技术与实验研究专项"南岭成矿带地壳岩浆系统结构探测实验"课题 (SinoProbe 0301)

"我国重要矿产和区域成矿规律研究"项目(1212010633903)

中国地质大调查项目"南岭地区岩浆岩成矿专属性研究"(1212011120989)

计量
- 文章访问数: 1565
- HTML全文浏览量: 4
- PDF下载量: 1055
出版历程
- 收稿日期: 2012-01-07

The Characteristics and Age of Zircon in Lujing Kimberlite-like Rock (Kimberlitic Lamprophyre) in Southern Jiangxi and Its Tectonic Significance

1.
Key Laboratory of Metallogeny and Mineral Resource Assessment, Ministry of Land and Resources, Institute of Mineral Resources, Chinese Academy of Geological Sciences, Beijing 100037, China
2.
Key Laboratory of Metallogeny and Mineral Resource Assessment, Ministry of Land and Resources, Institute of Mineral Resources, Chinese Academy of Geological Sciences, Beijing 100037, China
3.
Department of Land and Resources of Jiangxi Province, Nanchang 330000, China
4.
Key Laboratory of Metallogeny and Mineral Resource Assessment, Ministry of Land and Resources, Institute of Mineral Resources, Chinese Academy of Geological Sciences, Beijing 100037, China

摘要

摘要: 南岭以花岗岩广泛分布闻名于世,但也存在基性超基性侵入岩。位于赣南安远蔡坊镇的路迳似金伯利岩(金伯利质煌斑岩)就是其中之一。本研究在野外调研的基础上,利用高灵敏高分辨离子探针(SHRIMP)锆石定年技术对其成岩时代进行了研究,获得其U-Pb年龄为132.0 Ma(变化于128.7~135.4 Ma)。同时还发现了早期锆石捕获晶,其年龄为1945 Ma,意味着赣南地区存在古元古代的基底。这一结果一方面弥补了原先根据K-Ar法和Rb-Sr法将似金伯利岩定为新生代的不足,为探讨赣南地区大地构造演化历史提供了准确资料;同时也表明燕山晚期的构造体制转换与壳幔相互作用是有关的,似金伯利岩岩浆可能起源于富集地幔。
- 路迳似金伯利岩(金伯利质煌斑岩) /
- 锆石U-Pb定年 /
- 燕山晚期 /
- 富集地幔
Abstract: The Nanling area is famous for its widely distributed granites, however, there are also many mafic to ultra-mafic intrusion, Lujing kimberlite-like rock (kimberlitic lamprophyre), located in Caifang Town, Anyuan Country of South Jiangxi province, being one of these intrusions. Based on a field survey, we investigated the rock formation time of Lujing by SHRIMP zircon U-Pb dating, and determined its age as 132.0 Ma (range in 128.7-135.4 Ma). Meanwhile, early xenocryst of 1945 Ma old was found, which indicates that there is a Palaeoproterozoic basement in the South Jiangxi area. Firstly, this result revises the previous determination of the Lujing kimberlite-like rock as Caenozoic by K-Ar and Rb-Sr dating method, and provides new correct data for investigating the evolutionary history of tectonic structures of the South Jiangxi area. Secondly, this result indicates that the transformation of the tectonic system in the late Yanshanian period is related to the interaction of crust and mantle, and the magma of the Lujing kimberlite-like rock may have originated from enriched mantle.
- Lujing /
- kimberlite-like /
- rock /
- (kimberlitic

HTML全文

参考文献(16)

叶松,杨眉,叶德隆,邰道乾,任迎新.江西安远路迳金伯利质煌斑岩筒的Rb-Sr同位素年龄及其地质意义[J].地质科技情报, 2001,20(2): 27-29.

叶松,杨眉,叶德隆,邰道乾,任迎新.江西安远路迳金伯利质煌斑岩筒研究[J].矿产与地质,2007,21(4): 383-395.

江西省地质勘查局.江西省区域地质志[M].北京:地质出版社,1984: 1-921.

池际尚.中国东部新生代玄武岩及上地幔研究(附金伯利岩)[M].武汉:中国地质大学出版社,1988.

战明国.赣南金伯利角砾岩的发现、研究与金刚石找矿前景(未刊资料)[Z].1995.

简平,刘敦一,张旗,张福勤,石玉若,施光海,张履桥,陶华.蛇绿岩及蛇绿岩中浅色岩的SHRIMP U-Pb测年[J].地学前缘,2003,10(4): 439-456.

周剑雄,陈振宇.电子探针下锆石阴极发光的研究[M].成都:电子科技大学出版社,2007: 1-104.

符鹤琴,罗小洪,李武显.江西金刚石找矿前景分析[J].江西地质科技,1993,20(3): 101-106.

赖章忠,王安诚.赣南中生代火山活动时代及岩浆来源[J].江西地质,1996,10(2): 111-118.

陈毓川,王登红,朱裕生,徐志刚,任纪舜,翟裕生,常印佛,汤中立,裴荣富,滕吉文,邓晋福,胡云中,任天祥,沈保丰,王世称,肖克炎,彭润民,钱壮志,梅燕雄,杜建国,施俊法,张晓华,朱明玉,徐珏,薛春纪.中国成矿体系与区域成矿评价(上册)[M].北京:地质出版社, 2007.

王登红.地幔柱及其成矿作用[M].北京:地质出版社,1998: 1-160.

Belousova E, Walter, Griffin W L, O'Reilly S Y, Fisher N I. Zircon trace-element compositions as indicators of source rock type[J].Contributions to Mineralogy and Petrology, 2002, 143: 602-622.

夏斌,刘红英,张玉泉.攀西古裂谷钠质碱性岩锆石SHRIMP U-Pb年龄及地质意义——以红格、白马和鸡街岩体为例[J].大地构造与成矿学,2004(2):149-154.

Zhou M F, Zhao J H, Qi L, Su W C, Hu R Z. Zircon U-Pb geochronology and elemental and Sr-Nd isotope geochemistry of Permian mafic rocks in the Funing area, SW China[J]. Contributions to Mineralogy and Petrology, 2006, 151: 1-19.

Zhong H, Zhu W G. Geochronology of layered mafic intrusions from the Pan-Xi area in the Emeishan large igneous province, SW China [J]. Mineral Deposita, 2006,41: 599-606.

Shellnutt J G, Zhou M F, Yan D P, Wang Y B. Longevity of the Permian Emeishan mantle plume (SW China): 1 Ma, 8 Ma or 18 Ma [J].Geological Magazine, 2008,145(3): 373-388.

施引文献

资源附件(0)

计量

文章访问数: 1565
HTML全文浏览量: 4
PDF下载量: 1055
被引次数: 0

赣南路迳似金伯利岩(金伯利质煌斑岩)锆石的特点和年龄及其构造意义

计量

出版历程

The Characteristics and Age of Zircon in Lujing Kimberlite-like Rock (Kimberlitic Lamprophyre) in Southern Jiangxi and Its Tectonic Significance

计量

出版历程

目录