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中泥盆世末期湘、桂、粤海系古华南海的一部分,其海域北界江南古陆,南临华夏古陆与云开古陆,东至湘赣边界,西迄滇黔省境(目前工作仅限于东径108°以东),面积达60万平方公里以上。海域中部尚有猫儿山,越城岭、宁岗、架桥岭、海洋山、连山、五点梅花等岛屿与众多的水下隆起。除华夏古陆边缘和江南古陆南缘(湘北部分)及云开古陆东侧为浑水沉积外,其余主
At the end of the Middle Devonian, part of the Guhua South China Sea in the Xiang, Gui and Yuehai Seas, which lies in the south of the northern boundary of the sea in the South China Sea, has the Huaxia ancient land and the Yunkai ancient land in the south, the border of Hunan-Jiangxi in the east, and the Yunnan- The current work is limited to east 108 ° east), an area of 600,000 square kilometers or more. In the middle of the sea, there are many underwater uplifts such as Maoer Mountain, Yuechengling, Ninggang, Jiaoqiaoling, Oceanic Mountain, Lianshan Mountain and Five Plum Blossoms. Except for the sediments of the Huaxia paleo-continental margin and the south margin of the southern Jiangnan ancient land (part of the Xiangbei area) and the east of the Yunkai ancient land, the remaining