Cenozoic tectonic evolution of the Elashan range and its surroundings, northern Tibetan Plateau as constrained by paleomagnetism and apatite fission track analyses
Cenozoic tectonic evolution of the Elashan range and its surroundings, northern Tibetan Plateau as constrained by paleomagnetism and apatite fission track analyses
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古地磁和磷灰石裂变径迹分析约束下青藏高原北部阿拉善山脉及周边地区新生代构造演化
DOI：
10.1016/j.tecto.2012.09.013
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发表时间：
2012-12
期刊：
影响因子：
2.9
通讯作者：
Kai Meng
中科院分区：
文献类型：
--
作者：
Haijian Lu;Erchie Wang;Xuhua Shi;Kai Meng
共和盆地西部和柴达木盆地东部沉积的磁性地层学研究以及阿拉善山脉的磷灰石裂变径迹分析表明，额拉山山脉及其周围经历了两个阶段的演化：白垩纪至早第三纪的长期隆升(这解释了该区不存在古近纪地层)和晚渐新世以来由于广泛分布的逆冲断裂而导致的额拉山山脉的加速增长。这一晚期隆升导致柴达木盆地和共和盆地最东端的厚沉积(乌兰剖面的基础年龄为21-22 Ma，共和剖面的基础年龄为~20 Ma，茶卡剖面的基础年龄为12 Ma)。柴达木盆地和共和盆地在新生代经历了逆冲运动和伸展伸展两个阶段，两个盆地从未统一。古地磁偏角数据表明，走滑可能发生在~10 Ma，此时旋转意义上有快速转变(由逆时针向顺时针方向转变)。这一时间也与温泉断裂晚第四纪滑动速率反推确定的9 Ma起始年龄相似。最终，青海南山冲断带在~6 Ma开始发育。
Magnetostratigraphic studies of sediments in the western Gonghe and eastern Qaidam Basins, together with apatite fission track (AFT) analyses in the Elashan Range, suggest that the Elashan range and its surroundings experienced a two-stage evolution: a protracted uplift from the Cretaceous to the early Tertiary (which explains the absence of the Paleogene strata in the region) and an accelerated growth of the Elashan range since the latest Oligocene caused by extensively distributed thrust faults in the region. This later phase of uplift resulted in the subsequent thick sediments within the both easternmost Qaidam and Gonghe Basins (basal ages of 21–22Ma in the Wulan section, of ~20Ma in the southern Gonghe section, and of >l2Ma in the Chaka section. The two phases of thrust motion and range growth mean that the Qaidam and Gonghe Basins were never united during Cenozoic times. The strike–slip is likely to have occurred at ~l0Ma, as shown by the paleomagnetic declination data, which show a rapid transition in rotation sense (from counterclockwise to clockwise) at that time. This time is also similar to the 9Ma age of initiation of the Wenquan fault determined by backward calculation based on its late Quaternary slip rate. Eventually, the Qinghai Nan Shan thrust belt began to develop at ~6Ma.
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DOI：
10.1007/bf01034498
发表时间：
1981
期刊：
Journal of the International Association for Mathematical Geology
影响因子：
--
作者：
R. Galbraith
通讯作者：
R. Galbraith
影响因子：
2.4
作者：
M. Malusà;E. Garzanti
通讯作者：
M. Malusà;E. Garzanti
影响因子：
4.2
作者：
Yan Chen;S. Gilder;Nadir Halim;J. Cogné;V. Courtillot
通讯作者：
Yan Chen;S. Gilder;Nadir Halim;J. Cogné;V. Courtillot
影响因子：
5.3
作者：
M. Malusà;C. Faccenna;E. Garzanti;R. Polino
通讯作者：
M. Malusà;C. Faccenna;E. Garzanti;R. Polino
柴达木盆地北部大红沟剖面磁性地层及其对祁连山、阿尔金断裂新生代构造演化的影响
影响因子：
5.3
作者：
Lu, Haijian;Xiong, Shangfa
通讯作者：
Xiong, Shangfa