CAJ | 학술논문

江山-绍兴结合带内浙江溪口一带发现了以岩块、透镜状产出的榴闪岩。榴闪岩主要由角闪石、石榴子石、单斜辉石、斜长石和石英组成，以石榴子石为中心“白眼圈”结构明显，镜下可见石榴子石周围斜长石冠状体，单斜辉石内部及周围由斜长石和角闪石构成的后成合晶与冠状体结构。通过锆石LA-ICP-MS U-Pb测年在白石山头榴闪岩中获得主要变质年龄（451+8/-18）Ma。江山-绍兴结合带榴闪岩的发现为研究华夏地块与扬子陆块之间碰撞拼贴历史提供了新证据。
강산-소흥결합대내절강계구일대발현료이암괴、투경상산출적류섬암。류섬암주요유각섬석、석류자석、단사휘석、사장석화석영조성，이석류자석위중심“백안권”결구명현，경하가견석류자석주위사장석관상체，단사휘석내부급주위유사장석화각섬석구성적후성합정여관상체결구。통과고석LA-ICP-MS U-Pb측년재백석산두류섬암중획득주요변질년령（451+8/-18）Ma。강산-소흥결합대류섬암적발현위연구화하지괴여양자륙괴지간팽당병첩역사제공료신증거。
This paper reports retrograde eclogite that occurs in lanticular form in Xikou area of Jiangshan-Shaoxing suture zone. The retrograde eclogite consists of the mineral assemblage of amphibole+garnet+clinopyroxene+plagioclase+quartz. A clear‘white-eye' structure is well developed, garnet is rimmed with symplectitic plagioclase, and clinopyroxene is surrounded by symplektic plagioclase and amphibole. Zircon U-Pb dating by LA-ICP-MS shows that the peak metamorphic age is (451+8/-18)Ma. Exposures of retrograde eclogites in the Jiangshan-Shaoxing suture zone provide new insight for the collisional process between the Cathaysia block and the Yangtze block.