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青藏高原东缘甘孜地区新生代隆升过程之磷灰石裂变径迹证据

王一伟 梅刚 谢启兴 周晓珂 王刚

中国地质Issue(2):469-479,11.
中国地质Issue(2):469-479,11.

青藏高原东缘甘孜地区新生代隆升过程之磷灰石裂变径迹证据

Apatite fission track evidence for the Cenozoic uplift process in Garze area on the eastern margin of the Tibetan Plateau

王一伟 1梅刚 2谢启兴 3周晓珂 3王刚3

作者信息

  • 1. 成都理工大学地球科学学院,四川成都610059
  • 2. 四川省地质矿产勘查开发局川西北地质队,四川绵阳621000
  • 3. 四川省地质矿产勘查开发局川西北地质队,四川绵阳621000
  • 折叠

摘要

Abstract

Based on fission track analysis of seven samples from Garze area on the eastern margin of the Tibetan Plateau, the authors obtained the apparent ages of the analyzed samples. Using the simulated annealing method, the authors made thermal history simulation for all samples, and obtained the thermal evolution history of these samples. According to the results obtained, the Garze area has experienced similar tectonic evolutions since Palaeogene, and the tectonic uplift occurred in 46-30 Ma and since 9 Ma of Neogene, with the uplift rate and average uplift amount being 1261 m/Ma, 2634 m and 388 m/Ma, 1043 m respectively. The tectonic uplifts in the Garze area are characterized by imbalance as well as stage and regional differences; in addition, there also exist deviations in cooling rate, uplift rate and uplift amplitude.

关键词

青藏高原东缘/构造隆升/砂岩磷灰石裂变径迹

Key words

eastern margin of the Tibetan Plateau/tectonic uplift/apatite fission track of sandstone

分类

天文与地球科学

引用本文复制引用

王一伟,梅刚,谢启兴,周晓珂,王刚..青藏高原东缘甘孜地区新生代隆升过程之磷灰石裂变径迹证据[J].中国地质,2015,(2):469-479,11.

基金项目

中国地质调查局地质调查项目(1212010918037)资助。 ()

中国地质

OA北大核心CSCDCSTPCD

1000-3657

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