区域变质作用 meaning in Chinese

general metamorphism
normal metamorphism
regional metamorphism

Based on a comprehensive review on research results of metamorphic rocks , the authors argue that the formation and exhumation of uhpm ultra - high pressure metamorphite experienced two stages , i . e . , cold slab subduction and exhumation during 240200ma , and lithosphere delamination and thermal exhumation during 196163ma . the rapid thermal exhumation , co - occurred with extensive regional metamorphism and intermediate - acidic magmatism , implied that the subducted slabs had broken off and delaminated . the
通过全面评述该区变质岩研究成果，作者认为：超高压变质岩的形成和剥露经历了240200ma的板片冷俯冲冷折返和196163ma的岩石圈拆沉热折返热折返伴随了广泛而强烈的区域变质作用和中酸性岩浆活动，指示板片断离拆沉的发生超高压变质岩