新疆石油地质

新疆石油地质 ›› 2003, Vol. 24 ›› Issue (3): 195-198+175-176.

• 油气勘探 • 上一篇    下一篇

三塘湖盆地火成岩元素地球化学与测年研究

王大锐1,2, 袁明生3, 张映红1, 韩保福4   

  1. 1.中国石油石油勘探开发科学研究院,北京 100083;
    2.中国石油油气地球化学重点实验室,北京 100083;
    3.中国石油吐哈油田分公司研究院,新疆哈密 839009;
    4.北京大学地球与空间科学学院,北京 100871
  • 收稿日期:2002-07-31 发布日期:2020-09-21
  • 作者简介:王大锐（1955-）,男,天津人,高级工程师,博士,地球化学。联系电话：010-62098167

Element Geochemistry and Age Dating on the Igneous Rocks in Santanghu Basin

WANG Da-rui, YUAN Ming-sheng, ZHANG Yin-hong, HAN Bao-fu   

  • Received:2002-07-31 Published:2020-09-21
  • About author:WANG Da-rui (1955-), Male, Doctor, Senior Engineer, Geochemistry, Research Institute of Petroleum Exploration & Development, PetroChina, Beijing 100083, China

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摘要： 新疆三塘湖盆地油气区发育有大面积、多套火成岩建造,大部分岩性为火山喷发岩,局部为浅成侵入岩。对所采集的20块岩心样品进行地球化学分析的结果表明,三塘湖盆地火成岩中的稀土元素地球化学特征与吐哈盆地二叠系火成岩十分相似。三塘湖盆地火成岩中稀土元素总量变化较大,轻稀土元素相对富集,铕(Eu)元素异常不明显。K-Ar法综合研究表明,盆地内所分析的岩浆岩发育时期为距今270.0×106~290.8×106a,相当于晚石炭世至早二叠世。

关键词: 三塘湖盆地, 火成岩, 化学元素, 地球化学特征, 同位素地质年龄, 测定

Abstract: Santanghu oil-gas province is located in Xinjiang,northwest China,where developed huge area and various systems of igneous rock formations. The lithology is mostly volcanic explosion rocks and locally hypabyssal intrusive rocks. Based on the geochemical analyses of 20 samples available from this area, it is shown that the characters of rare-earth elements in igneous rocks are very similar to those of Permian volcanic rocks in Turpan-Hami basin, in which the total amount of rare-earth element is significantly variable with relatively enriched light rare-earth elements and indistinctive abnormal element of Eu. The integrated research with K-Ar approach suggests that the igneous rocks in the basin are developed in an episode ranging from 270.0 to 290.8Ma, corresponding to Late Carboniferous to Early Permian.

Key words: Santanghu basin, igneous rock, chemical element, geochemistry characteristics, isotope geologic age, determination

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