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首页> 外文期刊>Journal of Asian earth sciences >Late Cenozoic tectono-geomorphologic evolution of the northern Tian Shan mountain range: Insight from U-Pb ages of detrital zircon grains from the Upper Oligocene-Quaternary sediments of the southern Junggar basin
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Late Cenozoic tectono-geomorphologic evolution of the northern Tian Shan mountain range: Insight from U-Pb ages of detrital zircon grains from the Upper Oligocene-Quaternary sediments of the southern Junggar basin

机译：田山北部的新生代构造 - 整晶体演变：来自南部Junggar盆地南部寡核苷酸 - 季铵 - 季铵泥浆U-Pb谷物的洞察力

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摘要

Being one of the largest intra-continental orogens of the world, the Tian Shan orogenic belt was uplifted to its present elevation due to the far-field effect of the India-Asia convergence. In this study, we performed a systematic study on the Upper Oligocene-Quaternary sedimentary rocks from the southern Junggar basin, including conglomerate clast counting and detrital zircon U-Pb dating, to reconstruct the Late Cenozoic uplift history of the northern Tian Shan mountain range. The new detrital zircon U-Pb data provide new constrains on the Late Cenozoic intra-continental deformation of the Borohoro range. The Yili-Central Tian Shan and North Tian Shan were the major sources for the Junggar basin during the Latest Cretaceous-Paleogene period. At that time, the Borohoro range was characterized by low topography and wide drainage pattern. As the uplift of the North Tian Shan commenced at similar to 25-23 Ma, the high topography of the northern Borohoro range blocked the transport of sediments from the Yili-Central Tian Shan to the north. The North Tian Shan became the primary provenance area of the southern Junggar basin. According to sedimentary provenance analysis and geomorphologic survey, we infer that the Yili-Central Tian Shan started to uplift at 12-9 Ma. Combined with previously published data, our results suggest that the Middle Miocene uplift event most likely occurred in both the hinterland and foreland regions along the whole Tian Shan mountain range.
机译：是世界上最大的欧洲大陆内奥古斯之一，由于印度 - 亚洲融合的近场效应，天山oreganic腰带被提升到目前的升高。在这项研究中，我们对南部南部南部的寡核苷酸 - 季沉积岩进行了系统研究，包括集团夹层计数和邪恶锆石U-PB约会，重建了北部山区北部的新生代隆起历史。新的Detrital Zircon U-PB数据在博尔霍罗范围的晚新生代内部变形中提供了新的约束。天山和北天山伊利市中心是在最新的白垩纪古代期间的准噶尔盆地的主要来源。当时，博罗罗范围的特征在于，地形和宽排水图案。由于北天山的隆起同样于25-23马，北方北部的高地形阻碍了北部田山的沉积物运输到北方。北天山成为南方准噶尔盆地的主要出处。根据沉积物源分析和地貌调查，我们推断伊利 - 田山开始升高12-9马。与以前发表的数据相结合，我们的结果表明，中间内部隆起事件最有可能发生在腹地和沿着整个天山山脉的河口和前陆地区。

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