Uplift and Expansion of the North Qilian Shan Recorded by Detrital Fission Tracks in the Jiudong Basin, NW China
Uplift and Expansion of the North Qilian Shan Recorded by Detrital Fission Tracks in the Jiudong Basin, NW China
复制标题
九东盆地碎屑裂变径迹记录的北祁连山隆升与扩张
DOI：
10.3389/feart.2021.826104
复制
发表时间：
2022-02
影响因子：
2.9
通讯作者：
Dianbao Chen
中科院分区：
文献类型：
--
作者：
Baotian Pan;Qiming Zhao;Xiaofei Hu;Jiaxin Zhang;Dianbao Chen
北祁连山位于青藏高原东北部前缘，是研究高原扩张过程的理想地区，但由于缺乏直接证据和精确的年代控制，至今尚未得到明确的揭示。酒东盆地晚新生代连续的沉积层序和可靠的年代地层格架（7 Ma以后）为研究这一过程提供了物质基础。在这项研究中，我们首先分析了碎屑磷灰石裂变径迹年龄分布和磷灰石颗粒结构的沉积物的物源变化。结果表明，第一次物源转换发生在4.6-3.6Ma，即北祁连山由南向北方沉积物源转换，表明北祁连山断裂已扩展到现代位置。第二次物源转换发生在3.0-2.4Ma，此时玉木山及其以南地区开始为九东盆地提供沉积物，表明北祁连山的构造变形已扩展到玉木山北断裂。研究结果表明，北祁连山上新世以来发生了两次显著的扩张事件。
The North Qilian Shan, located in the northeastern front of the Tibetan Plateau, is an ideal region to study the expansion process of the plateau, which is not clearly revealed due to the lack of direct evidence and an accurate age control. In the Jiudong Basin (foreland basin of the North Qilian Shan), a continuous late Cenozoic sedimentary sequence and a reliable chronostratigraphic framework (post-7 Ma) provide us the material to study this process. In this study, we first analyzed the provenance changes of the sediment by detrital apatite fission track age distributions and apatite particle textures. The result shows that the first provenance change occurred at 4.6–3.6Ma, when the sediment source changed from the southern to the northern parts of the North Qilian Shan, and it indicates that the North Qilian Shan Fault had propagated to its modern location. The second provenance change occurred at 3.0–2.4Ma, at when the Yumu Shan and its south region began to provide sediments for the Jiudong Basin, and it indicates that the tectonic deformation in the North Qilian Shan had expanded to the North Yumu Shan Fault. Our finding suggests that two significant expansion events happened since the Pliocene for the North Qilian Shan.
登录
查看更多内容
祁连山新生代多期变形与藏北高原乱序发育
影响因子：
2.9
作者：
Bing Li;Andrew V. Zuza;Xuanhua Chen;Daogong Hu;Zhaogang Shao;Bangshen Qi;Zeng-zhen Wang;Drew A. Levy;Xiaosong Xiong
通讯作者：
Xiaosong Xiong
影响因子：
5.3
作者：
STEIGER, RH;JAGER, E
通讯作者：
JAGER, E
影响因子：
5.8
作者：
A. Draut;P. Clift
通讯作者：
A. Draut;P. Clift
DOI：
10.1016/0168-9622(89)90035-3
发表时间：
1989-09
期刊：
Chemical Geology: Isotope Geoscience Section
影响因子：
--
作者：
G. Wagner;A. Gleadow;P. Fitzgerald
通讯作者：
G. Wagner;A. Gleadow;P. Fitzgerald
影响因子：
4
作者：
B. Pan;Dianbao Chen;Xiaofei Hu;Xilin Cao;Jinjun Chen;Junwei Mao
通讯作者：
B. Pan;Dianbao Chen;Xiaofei Hu;Xilin Cao;Jinjun Chen;Junwei Mao