| 矿物裂变径迹年龄与青藏高原隆升速率研究 |
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| 引用本文： | 江万,莫宣学,赵崇贺,郭铁鹰,张双全.矿物裂变径迹年龄与青藏高原隆升速率研究[J].地质力学学报,1998,4(1):13-18. |
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| 作者姓名： | 江万 莫宣学 赵崇贺 郭铁鹰 张双全 |
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| 作者单位： | 1. 中国地质科学院地质力学研究所; |
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| 基金项目： | 地矿部重点研究课题《青藏高原构造演化、隆升与岩浆热事件若干问题研究》的资助 |
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| 摘 要： | 本文通过对青藏高原冈底斯花岗岩带中段花岗闪长岩中不同矿物裂变径迹年龄研究表明,青藏高原南部的隆升是分阶段的,从岩体就位到约30Ma为高原缓慢隆升阶段,30Ma-7Ma期间高原隆升速度加快,7Ma以来高原快速隆升;结合已有的有关青藏高原不同地区隆升速率、时限研究成果认为,青藏高原的隆升具有整体性、阶段性、加速性和区域的不均衡性。
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| 关 键 词： | 矿物裂变径迹年龄 青藏高原 隆升 |
| 收稿时间： | 1997/9/9 0:00:00 |
MINERAL FISSION-TRACK DATES AND RESEARCH ON UPLIFTING VELOCITY OF QINGHAI-XIZANG PLATEAU |
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| Jiang Wan,Mo Xuanxue,Zhao Chonghe,Guo Tieying and Zhang Shuangquan.MINERAL FISSION-TRACK DATES AND RESEARCH ON UPLIFTING VELOCITY OF QINGHAI-XIZANG PLATEAU[J].Journal of Geomechanics,1998,4(1):13-18. |
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| Authors: | Jiang Wan Mo Xuanxue Zhao Chonghe Guo Tieying and Zhang Shuangquan |
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| Institution: | 1. Institute of Geomechanics, CAGS;2. China University of Geosciences, Beijing |
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| Abstract: | From the results of fission-track dating of different minerals from the granodiorite of the middle Gangdise granitoids belt in Qinghai-Xizang Plateau,the authors suggest that the uplifting of southern Qinghai-Xizang Plateau is episodic,there having occurred a slow uplifting from the emplacement of the intrusive to about 30 Ma,which was followed by an acceleration in velocity from 30 to 7 Ma and a rapid uplifting since 7 Ma. |
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| Keywords: | mineral fission-track date Qinghai-Xizang Plateau uplifting |
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