| 塔里木盆地瓦基里塔格辉长岩40Ar-39Ar年龄
及其意义 |
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| 引用本文： | 李曰俊,贾承造,胡世玲,黄智斌,曾强,谭泽金.塔里木盆地瓦基里塔格辉长岩40Ar-39Ar年龄
及其意义[J].岩石学报,1999,15(4):40. |
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| 作者姓名： | 李曰俊 贾承造 胡世玲 黄智斌 曾强 谭泽金 |
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| 作者单位： | ： 李曰俊 贾承造 黄智斌 曾强 谭泽金 塔里木石油勘探开发指挥部，新疆库尔勒
841000 |
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| 摘 要： | Wajilitag mountains, about
40km southeast to Bachu town, is located at western Tazhong tectonic belt (Central Rise),
Tarim basin, NW China. There exists a set of slightly metamorphic unfossiliferous clastic
rocks at Wajilitag. Basic-ultrabasic intrusions are developed in the clastic rocks. Two
gabbro specimens were sampled from the intrusions. Plate ages of 825.0±2.0Ma and 837.3±2.0Ma
and respective isochronal ages of 821.4±8.0Ma and 833.3±15.3Ma were got after Ar-Ar
analysis. This is the first group of reliable Precambrian isotopic ages in the inner part
of Tarim basin. It is an important data for study on the age, basement component and
tectonic type, etc. of Tarim basin, and also significant for the petroleum exploration
planning in that area.
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The 40Ar-39Ar
isotopic age of Wajilitag gabbro in Tarim basin and its geological significance. |
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