How do Continental Plateaus Grow? Mantle to Surface Dynamics of the Anatolian and Andean Plateaus

大陆高原如何生长？

• 批准号: RGPIN-2015-04695
• 负责人: Schoenbohm, Lindsay
• 金额: $ 1.97万
• 依托单位: University of Toronto
• 依托单位国家: 加拿大
• 项目类别: Discovery Grants Program - Individual
• 财政年份: 2019
• 资助国家: 加拿大
• 起止时间: 2019-01-01 至 2020-12-31
• 项目状态: 已结题
• 来源: https://www.nserc-crsng.gc.ca/ase-oro/Details-Detailles_eng.asp?id=681857
• 关键词: How; do; Continental; Plateaus; Grow

My research group will investigate the formation of continental plateaus - regions where mountain ranges swell to great widths, with relatively flat tops. We focus on two key locations: (1) the Central Anatolian Plateau in Turkey; and (2) the southern part of the Central Andean Plateau, the Puna Plateau, in northwest Argentina. We are interested in the processes that shape the plateau from the deepest levels to the surface, including: detachment and formation of tears in the subducting oceanic plate; loss of the lower part of the tectonic plate to delamination or dripping; flow of the weak lower crust; shortening of the crust in an organized or disorganized manner; and the influence of climate and erosion on the redistribution of mass. My team uses a combination of field and GIS (computer) based mapping and dating to measure deformation, subsidence and uplift of the plateau in order to constrain the various influences on plateau growth. Specifically, in Argentina, a PhD student will map the interior of the southern Puna Plateau, three Master's students will map key basins around the margins of the plateau, and five undergraduates will measure features of mountain ranges on and around the plateau to constrain the history of deformation. In Turkey, a PhD student will map and measure movement rates along the Central Anatolian fault zone and other active faults, and two Master's students will constrain uplift by measuring the incision of a major river into the plateau. ******We anticipate making important advances in: (1) linking events unfolding in the bottom of the tectonic plate and below to the deformation we observe at the surface; (2) understanding the interplay of tectonic deformation and climate-controlled erosion in hindering or augmenting growth of plateaus; (3) building a deeper understanding of the nature and complexity of continental tectonics; and (4) assessing seismic hazards in central Turkey. Canada will benefit through the training of Highly Qualified Personnel in field mapping and GIS, highly desired qualifications in the growing employment area of industry and environmental consulting. They will benefit from exposure to international research collaborations as well. Many of the research questions are applicable to Canada, with its long history of tectonic deformation and ancient plateaus, the roots of which are now exposed in the Canadian Shield. **

我的研究小组将调查大陆高原的形成 - 山区范围较大的宽度较大，顶部相对平坦。我们专注于两个关键位置：（1）土耳其中部的安纳托利亚高原； （2）阿根廷西北部的庞娜高原中部的南部。我们对将高原从最深水平到表面形成平稳的过程感兴趣，包括：俯冲海洋板中的撕裂和形成；损失构造板的下部以分层或滴水；弱下地壳的流动；以有组织或混乱的方式缩短外壳；以及气候和侵蚀对质量重新分布的影响。我的团队结合了田野和基于GIS（计算机）的映射和约会来衡量高原的变形，沉降和隆升，以限制对高原增长的各种影响。具体来说，在阿根廷，一名博士生将绘制南部高原南部的内部，三名大师的学生将在高原边缘绘制钥匙盆地，五名大学生将衡量高原及其周围山区的特征来限制变形的史。在土耳其，一名博士生将沿中央安纳托利亚断层区和其他主动断层绘制和衡量运动率，两名大师的学生将通过测量一条主要河流进入高原的切口来限制UPLIFT。 ******我们预计：（1）将事件在构造板的底部及其下方链接到我们在表面上观察到的变形的下方； （2）了解构造变形和气候控制的侵蚀在阻碍或增加高原生长中的相互作用； （3）对大陆构造学的性质和复杂性有更深入的了解； （4）评估土耳其中部的地震危害。加拿大将通过在现场地图和GIS中培训高素质的人员，这是在不断增长的行业和环境咨询领域中高度期望的资格的培训。他们也将受益于国际研究合作。许多研究问题都适用于加拿大，其构造变形和古代高原的历史悠久，其根源现在暴露在加拿大盾牌中。 **