摘要
海南白沙陨石冲击坑是中国境内发现的第—个保存良好、可供直观的陨坑.经野外考察和室内分析鉴定工作,进一步对白沙陨坑内击变岩的岩石一地球化学特征进行了研究,证明堆积在底盘原岩之上的貌似“火成岩”的块状、角砾岩岩石,是长石石英砂岩受冲击变质而成的击变岩.现简介如下.
AbstractPreliminary petrological and geochemiscal study of the breccia-looking dense and compact rocks from the Baisha impact crater, Hainan, shows that they are not volcanic rocks butshock-metamorphosed impactites derived from the arkosic sandstone at the base of the crater. The rocks were accumulated either above the protolithic sandstone base or on the inner and outer slopes of the crater.
出处
《中国地质》
CAS
CSCD
1994年第6期21-23,共3页
Geology in China
