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我队在开展一比五万区域地质调查中,于1981年首次发现桂东南早古生代一套细碧—角斑岩。这一发现为研究广西早古生代地壳构造及岩浆活动提供了新资料,填补了广西早古生代火山活动的又一个空白。该套细碧-角斑岩见于广西岑溪县城东北约26公里之白板、大爽一带,产于早志留世晚期沉积之砂泥质岩层中。上覆灰色粉砂质页岩及黑色页岩,页岩中产Stereptogrtus becki(Barrande),Monograptus priodon(Bronn)等;下伏岩层未出露。细碧-角斑岩与
My team in carrying out one to fifty thousand regional geological survey, in 1981 for the first time found in southeastern Guangxi a set of small Pit - angular porphyry. This finding provides new information for the study of the Early Paleozoic crustal structure and magmatism in Guangxi, filling another gap in Early Paleozoic volcanic activity in Guangxi. The set of fine Bi - angle porphyry found in Guangxi Cenxi County, about 26 km northeast of the white board, cool area, produced in the early Silurian sedimentary sand and argillaceous rock formation. Overlying gray silty shale and black shale, shale middle Stereptogrtus becki (Barrande), Monograptus priodon (Bronn), etc .; the underlying rock is not exposed. Fine blue - angular porphyry and