Plate kinematic constraints on driving forces associated with the Reunion plume head

与团聚羽流头部相关的驱动力的板块运动学约束

• 批准号: 1130047
• 负责人: Steven Cande
• 金额: $ 22.12万
• 依托单位: University of California-San Diego Scripps Inst of Oceanography
• 依托单位国家: 美国
• 项目类别: Standard Grant
• 财政年份: 2011
• 资助国家: 美国
• 起止时间: 2011-10-01 至 2014-09-30
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=1130047&HistoricalAwards=false
• 关键词: Plate; kinematic; constraints; driving; forces

In the 1960s the advent of plate tectonics revolutionized our understanding of how the Earth works ? why earthquakes and volcanoes occur where they do, and much about metal deposits, among other things. The primary force that moves plates is known to be gravity tugging on plates where the plunge into the Earth?s interior, but it has long been suspected that rising columns of mantle material (mantle plumes) in the interior also affect plate motions. The proponents of this proposal have uncovered evidence that that the plume that gave rise to the Reunion hotspot in the Indian Ocean also produced forces that affected the motions of India and Africa. This project takes a novel approach to analyzing the history plate motions, particularly Africa, to assess the influence of the plume. The principal broader impacts of this work will be a better understanding of the forces that shape the Earth in general and the tectonic evolution of Africa and southern Asia in particular.

在20世纪60年代，板块构造学的出现彻底改变了我们对地球运行方式的理解。为什么地震和火山会发生在它们发生的地方，以及许多关于金属矿床的问题，等等。移动板块的主要力量是已知的重力牵引板块的地方陷入地球？地球内部的地幔柱（地幔柱）也会影响板块运动。这一提议的支持者发现的证据表明，造成印度洋留尼汪热点的羽流也产生了影响印度和非洲运动的力量。该项目采用了一种新的方法来分析历史板块运动，特别是非洲，以评估地幔柱的影响。这项工作的主要广泛影响将是更好地了解塑造地球的力量，特别是非洲和南亚的构造演变。