胶东地区玲珑双向变质核杂岩的均衡隆升:运动学涡度的指示OA北大核心CSTPCD
Isostatic rising in the Linglong bivergent metamorphic core complex in the Jiaodong Peninsula:Indication from kinematic vorticity
在胶东半岛西北部,围绕着玲珑岩基所发育的早白垩世伸展构造,属于独特的双向变质核杂岩.这一变质核杂岩的东、西边界上,分别发育了倾斜相背的招平与焦家伸展拆离剪切带.双向变质核杂岩的剥露是否也有均衡隆升的贡献,一直没有明确的认识.本次工作以采自这两条边界拆离剪切带不同部位的糜棱岩样品为分析对象,分别应用刚性残斑长短轴比值法(具体又分别使用了 Wallis投图法和刚性颗粒网格法)和石英c轴组构与主应变比值法对同一样品进行了运动学涡度测量.对于招平拆离剪切…查看全部>>
Early Cretaceous extensional structures around the Linglong batholith in the northwestern Jiaodong Peninsula belongs to a bivergent metamorphic core complex(MCC).The MCC is bounded by the Zhaoping and Jiaojia detachment shear zones in the east and west respectively.It is not clear whether or not isostatic rising also contributes to exhumation of the bivergent MCC.In this study,kinematic vorticity measurements were conducted to mylonite samples from different…查看全部>>
吴晓冬;朱光
合肥工业大学资源与环境工程学院,安徽合肥,230009||湖南科技大学地球科学与空间信息工程学院,湖南湘潭,411201合肥工业大学资源与环境工程学院,安徽合肥,230009
伸展拆离剪切带运动学涡度一般剪切均衡隆升玲珑双向变质核杂岩
extensional detachment shear zonekinematic vorticitygeneral shearisostatic risingLinglong bivergent metamorphic core complex
《地质学报》 2024 (1)
31-49,19
本文为科技部国家重点研发计划专项(编号2016YFC0600102)和国家自然科学基金重点项目(编号41830213)联合资助的成果.
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