Using organic biomarker paleohypsometry to reconstruct the punctuated uplift history of the Northern Tibetan Plateau

利用有机生物标志物古地势测量重建青藏高原北部间断隆升历史

• 批准号: 2022282
• 负责人: Guangsheng Zhuang
• 金额: $ 28.46万
• 依托单位: Louisiana State University
• 依托单位国家: 美国
• 项目类别: Standard Grant
• 财政年份: 2020
• 资助国家: 美国
• 起止时间: 2020-08-01 至 2024-07-31
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=2022282&HistoricalAwards=false
• 关键词: Using; organic; biomarker; paleohypsometry; reconstruct

The Tibetan Plateau has long served as a natural laboratory for the study of extreme topography related to continent-continent collisions. The northern Tibetan Plateau is a key location for understanding how the India-Asia collision produced high topography in the continental interior 1,000 km away from the tectonic plate boundary. This project will reconstruct the history of past topographies of the northern Tibetan Plateau by using a newly developed quantitative approach. Data generated from this project will reveal when and how the northern Tibetan Plateau was uplifted to the present elevation and will help to differentiate between tectonic models. Broader impacts of this project include: 1. support of two early-career investigators, 2. training of graduate and undergraduate students in field and laboratory analyses, 3. enhancement of national and international collaborations between institutions in the United States and Canada, 4. incorporation of analytical techniques into undergraduate courses, and 5. community outreach events, such as mentoring underrepresented minority students with science projects, delivering presentations and field-based videos, and examining geology specimens at local charter schools.Understanding how an orogenic plateau formed far away from a plate boundary has long been a dynamic and controversial topic in continental dynamics. High topography is the manifestation of crustal and mantle processes, and this project aims at understanding which mechanism (underthrusting, mantle dynamics, infilling of ‘piggy-back’ basins, or crustal flow) controls the construction of high topography at the north margin of the Tibetan Plateau and what implications it bears for the India-Asia collision. The project will test the hypothesis that high topography in northern Tibetan Plateau has been constructed during a pulse of outward expansion from 15 to 8 million years ago. The project investigators will first develop an integrated approach that combines techniques in sedimentary geology, organic geochemistry, and geomorphology. The investigators will test the approach with Holocene sediments from three selected river catchments within the Qilian Shan region and use organic geochemistry proxies, i.e., hydrogen isotopes of n-alkanes derived from terrestrial higher-plant leaf waxes and distribution of microbial glycerol tetraethers produced in soils, to calibrate the relationships between proxies and the elevation distributions of river catchments (hypsometry). The investigators will apply the calibrated proxies to well-dated sedimentary rocks in the foreland basin of Hexi Corridor and the intermontane Qaidam Basin to constrain the elevational history of the Qilian Shan range between the two basins. This approach will be of broad use in similar climatic regimes in orogenic belts in the western United States, the Andes, and other parts of the Tibetan Plateau.This award reflects NSF's statutory mission and has been deemed worthy of support through evaluation using the Foundation's intellectual merit and broader impacts review criteria.

长期以来，藏族高原一直是与连续碰撞有关的极端地形研究的自然实验室。北藏高原是了解印度 - 亚洲碰撞如何在距构造板边界1,000公里的连续内部产生高地形的关键位置。该项目将通过使用新开发的定量方法来重建北藏高原过去地形的历史。从该项目产生的数据将揭示北藏高原何时以及如何将其升高到演示高程，并有助于区分构造模型。该项目的更广泛的影响包括：1。支持两名早期研究员的支持，2。培训研究生和本科生在现场和实验室分析中的培训，3。加强美国与加拿大机构之间的国家和国际合作培训，4。将分析技术纳入分析技术中，包括社区的较小学生，以及在社区中进行的较小的群体，例如，较小的教育范围。视频，并在当地的宪章学校检查地质标本。理解远离板界的造山高原如何长期以来一直是连续动态的动态和有争议的话题。高地形是地壳和地幔过程的表现，该项目的目的是了解哪种机制（不自信，地幔动力学，填充“背包”低音或地壳流量）控制着在藏族高原北部边缘的高顶路形成的构建，以及对印度collision collision的含义。该项目将检验以下假设：北藏高原的高地形是在15多年前向外扩展的过程中建造的。该项目研究人员将首先开发一种综合方法，该方法结合了沉积地质，有机地球化学和地貌学方面的技术。 The investigators will test the approach with Holocene sediments from three selected river catchments within the Qilian Shan region and use organic geochemistry proxies, i.e., hydrogen isotopes of n-alkanes derived from terrestrial higher-plant leaf waxes and distribution of microbial glycerol tetraethers produced in soils, to calibrate the relationships between proxies and the elevation distributions of river catchments (hypsometry).研究人员将将校准的代理应用于赫克西走廊前陆盆地和跨蒙塔尼Qaidam盆地的预科岩石上，以限制两个低音之间的Qilian Shan范围的高度历史。这种方法将在美国西部，安第斯山脉，安第斯山脉和藏族高原的其他地区的类似气候制度中广泛使用。该奖项反映了NSF的法定任务，并被认为是通过基金会的知识分子优点和更广泛的影响审查标准通过评估来评估的。

项目成果

Introduction to the special issue “Tibetan tectonics and its effect on the long‐term evolution of climate, vegetation and environment”

• DOI: 10.1111/ter.12588
• 发表时间: 2022-02
• 期刊: Terra Nova
• 影响因子: 2.4
• 作者: Yuntao Tian;G. Zhuang;J. Nie;Qiang Xu-;Yaowu Xing;A. Zuza;J. Saylor;R. Leary;A. Rohrmann

Constraints on the timing of the India‐Asia collision and unroofing history of the Himalayan orogen using detrital zircon U‐Pb‐Hf and whole‐rock Sr‐Nd isotopes in Cretaceous‐Miocene Lesser Himalayan sedimentary rocks

• DOI: 10.1111/bre.12742
• 发表时间: 2022-12
• 期刊: Basin Research
• 影响因子: 3.2
• 作者: Wei Feng;Q. Meng;Chunhui Song;X. Fang;G. Zhuang;Pengju He;Shufen Yang;Jing Zhang;Yong-Jun Chen-Yo

Isotopic fingerprints of mountain uplift and global cooling in paleoclimatic and paleoecological records from the northern Tibetan Plateau

• DOI: 10.1016/j.palaeo.2021.110578
• 发表时间: 2021-09
• 期刊: Palaeogeography, Palaeoclimatology, Palaeoecology
• 作者: M. Hou;G. Zhuang;Minghao Wu

Mid-Miocene sea level altitude of the Qaidam Basin, northern Tibetan Plateau

• DOI: 10.1038/s43247-022-00671-8
• 发表时间: 2023-01
• 期刊: Communications Earth & Environment
• 影响因子: 7.9
• 作者: Yuanyuan Sun;Yuanyuan Liang;Hu Liu;Jun Liu;Junliang Ji;Xue Ke;Xiaobo Liu;Yuxin He;Huanye Wang

Enhanced precipitation in the Gulf of Mexico during the Eocene − Oligocene transition driven by interhemispherical temperature asymmetry

始新世—渐新世过渡时期半球间温度不对称导致墨西哥湾降水增加

• DOI: 10.1130/b36103.1
• 发表时间: 2022
• 期刊: GSA Bulletin
• 作者: Hou, Mingqiu;Zhuang, Guangsheng;Ellwood, Brooks B.;Liu, Xiao-lei;Wu, Minghao
• 通讯作者: Wu, Minghao