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2016 SinoProbe International Field Workshop in USA
来源:野外考察团队全体成员             上传日期:2016-12-15
 International Field Workshop on  “The Birth and Evolution of the Pacific Basin and their Impacts on the Tectonic History of East Asia and the North America Cordilleran Orogen”

 

In this field workshop we invite experts from Asia and North America to discuss key scientific issues that link the birth and evolution of the Pacific basin with the tectonic evolution of the Asian and North American continents. The birth of the Pacific Ocean is a result of the breakup of supercontinent Rodinia that was cored b the Laurentia (i.e., North America). However, it has been intensely debated on the exact matching continents that were once connected with the the North America continent and Asian continental fragments during the formation of supercontinent Rodinia. One highly debated view is that the western margin of North America was once linked with South China during the Neoproterozoic. This correlation is mainly based on an outdated geologic knowledge of Asia and North America gathered about two decades ago. The recent and emerging research, however, challenged this highly provocative and controversial hypothesis.


Another important issue is how the evolution of the Pacific basin, which has involved with the interactions of three major plates, the Pacific, the Kula, and the Farallon (see figure below, which have impacted the formation and development of the Andean-type active plate margins along the eastern edge of Asia and western edge of North America. It has long been noted that the timing of initial subduction along the west and east sides of the Pacific was nearly synchronous, and several pulses of arc magmatism and the style of tectonic deformation are also temporally correlative. However, there has been no systematic effort in examining the underlying plate-tectonics causes for these apparent correlations.




 

 

 

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