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| DOI | 10.1130/B36722.1 |
| Oligocene-Miocene northward growth of the Tibetan Plateau: Insights from intermontane basins in the West Qinling Belt, NW China | |
| 发表日期 | 2024 |
| ISSN | 0016-7606 |
| EISSN | 1943-2674 |
| 起始页码 | 136 |
| 结束页码 | 1-2 |
| 卷号 | 136期号:1-2 |
| 英文摘要 | Growth of the Tibetan Plateau, Earth's broadest and highest elevation collisional system, shapes orographic barriers, reorganizes drainage networks, and influences surface erosion and sediment delivery, whose changes in space and provenance feed back to intracontinental tectonic processes. Studies of interior basins within the northern Tibetan Plateau provide new sediment accumulation, provenance, paleodrainage, and deformation timing data that enable a reconstruction of the far-field tectono-geomorphic evolution of the rising Tibetan Plateau. Along the northern plateau margin, topographic growth in the West Qinling Belt is inferred to have initiated in the Eocene, nearly coeval with the India-Asia collision, as well as in the late Miocene. However, geological knowledge about the intervening period remains at present enigmatic, and the kinematics and dynamics are uncertain. This study presents a multidisciplinary data set from the intermontane Anhua-Huicheng Basin (AHB; Gansu Province, China) to fill this gap. Magnetostratigraphic dating, regional mapping, and sedimentological analysis imply that contractional deformation and thrust-top basin systems formed within the West Qinling Belt in the Oligocene (not later than ca. 24 Ma). A combination of observations including paleocurrent changes, detrital zircon U-Pb age variations, and appearance of growth strata along the Anhua-Huicheng Basin reveal the rapid uplift of the West Qinling Belt at ca. 15 Ma. Sedimentation in the intermontane basins ended after the late Miocene (ca. 8 Ma), when the region experienced intrabasinal deformation, uplift, and erosion with the establishment of an external drainage system. Since the late Miocene, the growth of the West Qinling Belt reached a climax with the lack of substantial contractional deformation in Cenozoic sequences heralding the onset of the modern kinematic regime and attainment of high elevation. Observed transitions in the tectonostratigraphy and paleodrainage define different phases of deformation and plateau-wide shifts in stress reorganization, which led to the northward growth and later lateral expansion of the Tibetan Plateau. |
| 语种 | 英语 |
| WOS研究方向 | Geology |
| WOS类目 | Geosciences, Multidisciplinary |
| WOS记录号 | WOS:001167650300004 |
| 来源期刊 | GEOLOGICAL SOCIETY OF AMERICA BULLETIN
 |
| 文献类型 | 期刊论文 |
| 条目标识符 | http://gcip.llas.ac.cn/handle/2XKMVOVA/304969 |
| 作者单位 | Sun Yat Sen University; University of Queensland; United States Department of the Interior; United States Geological Survey; China Earthquake Administration; China Earthquake Administration; Guangdong Earthquake Agency, CEA |
| 推荐引用方式 GB/T 7714 | . Oligocene-Miocene northward growth of the Tibetan Plateau: Insights from intermontane basins in the West Qinling Belt, NW China[J],2024,136(1-2). |
| APA | (2024).Oligocene-Miocene northward growth of the Tibetan Plateau: Insights from intermontane basins in the West Qinling Belt, NW China.GEOLOGICAL SOCIETY OF AMERICA BULLETIN,136(1-2). |
| MLA | "Oligocene-Miocene northward growth of the Tibetan Plateau: Insights from intermontane basins in the West Qinling Belt, NW China".GEOLOGICAL SOCIETY OF AMERICA BULLETIN 136.1-2(2024). |
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