Integrated fieldwork and numerical modeling investigation of deformation structures in earth's crust

地壳变形结构综合实地考察和数值模拟研究

• 批准号: 311715-2008
• 负责人: Jiang, Dazhi
• 金额: $ 2.62万
• 依托单位: University of Western Ontario
• 依托单位国家: 加拿大
• 项目类别: Discovery Grants Program - Individual
• 财政年份: 2011
• 资助国家: 加拿大
• 起止时间: 2011-01-01 至 2012-12-31
• 项目状态: 已结题
• 来源: https://www.nserc-crsng.gc.ca/ase-oro/Details-Detailles_eng.asp?id=480957
• 关键词: Integrated; fieldwork; numerical; modeling; investigation; Integrated; fieldwork; numerical; modeling; investigation

The Earth is unique among the terrestrial planets in the solar system in that it has plate tectonics - the uppermost 150 to 250km thick layer (called the lithosphere) consists of many "plates" moving relative to each other above the underlying mantle. Plate movement causes earthquakes and volcanoes and is responsible for the formation of mountain belts and ocean basins. Human beings live on the lithosphere and derive energy, mineral, and other resources from it. Despite its close relationship to humanity, it remains incompletely understood how the continental lithosphere deforms in response to plate movement over long time (more than millions of years) and vast space (comparable to the size of a continent like the North America) scales. Two complementary approaches are applied to advance our understanding: One involves laboratory experiments on lithospheric materials under as close to natural conditions as possible. The other which is the one followed by this applicant is to study the "signatures" of ancient lithospheric deformation recorded in rocks which are called "deformation structures", and to model the development of these structures by computers. This proposal requests funds to support my research on intra-continental deformation using the east part of the North China Craton as a field example. The research will involve students at both graduate and undergraduate levels, combining scientific investigation with the training of new scientists.

地球在太阳系中的陆地行星中是独一无二的，因为它具有板块构造 - 最高的150至250公里厚的层（称为岩石圈）由许多相对在底层上方移动的“板”组成。板运动会导致地震和火山，并负责形成山带和海盆。人类生活在岩石圈上，并从中获得能量，矿物质和其他资源。尽管它与人类密切相关，但它仍然不完全理解大陆岩石圈长期（超过数百万年）和宽敞的空间（与北美这样的大陆的大小相当）的质量变形。采用了两种补充方法来提高我们的理解：一种涉及在尽可能接近自然条件下的岩石圈材料上实验实验。另一个之后是该申请人，是研究记录在岩石中的古代岩石圈变形的“特征”，这些岩石圈变形被称为“变形结构”，并通过计算机对这些结构的开发进行建模。该提案要求资金支持我对中国克拉顿东部的大陆变形研究的研究，作为现场示例。这项研究将涉及研究生和本科生的学生，将科学研究与新科学家的培训相结合。