| 青藏高原晚新生代磁性地层研究 |
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| 引用本文： | 钱方.青藏高原晚新生代磁性地层研究[J].地质力学学报,1999,5(4):22-34. |
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| 作者姓名： | 钱方 |
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| 作者单位： | 中国地质科学院地质力学研究所,北京,100081 |
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| 基金项目： | ：原地质矿产部“九五”重点科技项目(9501120) |
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| 摘 要： | 本文较详细的论述了青藏高原晚新生代晚期的２０多个地层剖面或钻孔的磁性地层极性期，得出了一批地层年代数据。如昆仑山口羌塘组为３．１ＭａＢＰ－０．６５ＭａＢＰ，在该组中发现的三趾马化石为２．０８ＭａＢＰ，定日县贡巴组为２．３ＭａＢＰ－１．９ＭａＢＰ；札达盆地札达组和香孜组为６．１５ＭａＢＰ－３．４ＭａＢＰ，３．４ＭａＢＰ－１．２５ＭａＢＰ；理塘甲洼组为１．２４ＭａＢＰ－０．４３ＭａＢＰ，还得出吉隆三跖
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| 关 键 词： | 青藏高原 晚新生代 磁性地层 古环境 |
| 收稿时间： | 1999/8/3 0:00:00 |
| 修稿时间： | 1999-08-03 |
STUDY ON MAGNETOSTRATIGRAPHY IN QINGHAI-TIBETAN PLATEAU IN LATE CENOZOIC |
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| QIAN Fang.STUDY ON MAGNETOSTRATIGRAPHY IN QINGHAI-TIBETAN PLATEAU IN LATE CENOZOIC[J].Journal of Geomechanics,1999,5(4):22-34. |
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| Authors: | QIAN Fang |
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| Institution: | Institute of Geomechanics, CAGS, Beijing 100081, China |
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| Abstract: | In this paper, the polarity epochs of some twenty and more sections or boreholes in Qinghai-Tibetan plateau in Late Cenozoic are discussed in detail, and thence we have the ages of the sediments involved. The Qiangtang Formation at Kunlun pass has an age of 3.1MaBP~0.65MaBP, the Hipperion sp. contained in it being of an age of 2.08MaBP.The Gongba Formation at Dingri county 2.31MaBP~1.90MaBP, the Zhada Formation and Xiangzi Formation in the Zhada Basin 6.15MaBP~3.40MaBP and 3.40MaBP~1.25MaBP respectively, and Jiawa Formation at Litang 1.24MaBP~0.43MaBP. And the age for the Hipperion guizhongensis sp. from Jilong is 5.0MaBP. The age of early Quaternary glaciation is obtained as well. Thus a chronological scale is provided for the study of the time, and rate of the uplifting of the Plateau as well as the consequent environmental changes. |
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| Keywords: | Qinghai-Tibetan plateau Late Cenazoic magnetostratigraphy palaeoenvironment |
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