扬子克拉通北缘神农架南华系莲沱组寒冷气候的沉积学证据:冻融构造*
王玉冲1,2, 旷红伟2, 彭楠2, 柳永清2, 范正秀2, 夏晓旭1,2, 陈骁帅2, 郑行海1,2, 孙宇翔3

Freezing and thawing structures: An evidence of cold climate in the Neoproterozoic Liantuo Formation in Shennongjia of northern margin of Yangtze Craton
Wang Yu-Chong1,2, Kuang Hong-Wei2, Peng Nan2, Liu Yong-Qing2, Fan Zheng-Xiu2, Xia Xiao-Xu1,2, Chen Xiao-Shuai2, Zheng Hang-Hai1,2, Sun Yu-Xiang3
神农架莲沱组脉体发育序列图 a—莲沱组冻融构造主要发育位置与b图完整序列对应位置;b—完整冻融构造发育序列。下层段为3im厚度刚性破裂的枝状、网状冻融构造(古寒冻裂缝),上层段为5im厚的塑性变形为主的条带状、斑块状(含砂球与砂枕构造)冻融构造,两段界面因冻融作用而凹凸不平