Thermal history, exhumation, uplift, and long-term landscape evolution of the South Atlantic passive continental margin in south-eastern Argentina and comparison with SW-South Africa

阿根廷东南部南大西洋被动大陆边缘的热历史、折返、隆升和长期地貌演化以及与西南非洲的比较

• 批准号: 172865236
• 负责人: Professor Dr. Ulrich A. Glasmacher
• 金额: --
• 依托单位: Institut für Geowissenschaften
• 依托单位国家: 德国
• 项目类别: Priority Programmes
• 财政年份: 2010
• 资助国家: 德国
• 起止时间: 2009-12-31 至 2015-12-31
• 项目状态: 已结题
• 来源: https://gepris.dfg.de/gepris/projekt/172865236?language=en
• 关键词: Thermal; history; exhumation; uplift; long

The eastern Argentina South Atlantic passive continental margin (SAPCM-A) is characterized by a very flat topography without an escarpment developed. The timing and causes of the topography and basin evolution are only partly known. Thermochronological research with thermo-kinematic modeling will help to understand the causes and timing of the SAPCM-A. Perpendicular to the NE-SW trending direction of the SAPCM, two SE-NW trending basins (Salado, Colorado) are separated by the SE-NW trending Tandill and Ventana Hills. In cooperation with the SPP-research projects of Dr. R. di Primio and Dr. M. Scheck-Wenderoth, this research will focus on the temperature and inversion history of the on- and offshore part of the Salado and Colorado Basin. Applying thermochronological dating techniques, and 1-D modeling by the computer code Petromod and Petrotrack to cuttings from various drill sites, the research project will provide insight into the cooling, inversion, and uplift history of the basins. In addition, we will apply the same thermochronological techniques, and 3-D thermo-kinematic modeling (Pecube) on the surface outcrops in the Tandill and Ventana Hills between both basins. This area is also a key area to study the influence of Fracture Zones (transform faults, transfer zones) on the SAPCM evolution. Combining the ages, cooling, exhumation/inversion, and uplift rates, and models from the basins and the hills will allow constraining the evolution and the causes for this unique topography at the SAPCM. Therefore, this project will provide new data for the lithosphere and mantle scale modeling projects in the SPP. In a continuation we will compare the new data with those published on the evolution of the SAPCM in South Africa.

阿根廷南大西洋的亚大西洋大陆边缘（SAPCM-A）的特征是一个非常平坦的地形，没有开发悬崖。地形和盆地进化的时机和原因仅部分已知。使用热运动建模的热量研究研究将有助于了解SAPCM-A的原因和时机。垂直于SAPCM的NE-SW趋势方向，两个SE-NW趋势盆地（科罗拉多州萨拉多）通过Se-NW趋势Tandill和Ventana Hills分开。与R. Di Primio博士和M. Scheck-Wenderoth博士的SPP研究项目合作，这项研究将重点介绍Salado和Colorado盆地陆上和海上部分的温度和反转历史。该研究项目将热量年度约会技术和计算机代码petromod和petrotrack的1-D建模用于插条，研究项目将提供有关盆地的冷却，反转和隆升历史的洞察力。此外，我们将在两个盆地之间的坦迪尔和Ventana山的表面露头上应用相同的热量技术技术和3-D热模型建模（Pecube）。该区域也是研究断裂区域（转化断层，转移区）对SAPCM进化的影响的关键区域。结合年龄，冷却，挖掘/反转和隆升速率，以及盆地和山丘的模型，将允许限制SAPCM上此独特地形的进化和原因。因此，该项目将为SPP中的岩石圈和地幔规模建模项目提供新数据。在延续中，我们将将新数据与有关SAPCM在南非的发展的数据进行比较。