辽宁大连地区中—新元古界砂岩盐风化穴的发现及意义  

Discovery and significance of salt weathering tafoni in Meso-Neoproterozoic sandstone in Dalian area,Liaoning Province

作　　者：吴子杰 邱隆伟[1] 王海鹏 仲米山 高福亮 侯静 李欣 WU Zijie;QIU Longwei;WANG Haipeng;ZHONG Mishan;GAO Fuliang;HOU Jing;LI Xin(School of Geosciences,China University of Petroleum(East China),Qingdao,Shandong,266580;Liaoning Provincial Institute of Geological Exploration Co.,Ltd,Dalian,Liaoning,116100;College of Earth Sciences,Changchun,130061)

机构地区：[1]中国石油大学(华东)地球科学与技术学院,山东青岛266580 [2]辽宁省地质勘查院有限责任公司,辽宁大连116100 [3]吉林大学地球科学学院,长春130061

出　　处：《地质论评》2023年第6期2158-2160,共3页Geological Review

基　　金：辽宁省地质勘探矿业集团科研项目(编号:辽地矿2017-03和辽地矿2016-01);中国地质调查局项目(编号:1212011120734)资助的成果。

摘　　要：1研究目的辽宁大连地区位于华北克拉通的东北缘(Zhao Guochun et al., 2012),这里中-新元古代地层发育,自下而上分别为永宁群、细河群、五行山群和金县群,其中永宁群和细河群是一套碎屑岩沉积组合,永宁群包含永宁组,细河群包含钓鱼台组、南芬组、桥头组。A small honeycomb tafoni was found on the surface of the Meso—Neoproterozoic sandstone in Wafangdian area,Dalian,Liaoning Province.It is located on the surface of the northwest side of the outcrop sandstone layer.On the top surface of the sandstone layer and on the east and south sides,the tafoni was not developed.The whole tafoni is round or oval,with a diameter of 1~5 cm and a depth of 1~2 cm.Through field observation and comparative analysis,it is determined that it is the salt weathering tafoni.It is formed by the precipitation and crystallization of salt from sea fog in sandstone,which causes the detrital particles on the rock surface to fall off and weathering.

关 键 词：大连 中—新元古界 盐风化穴 砂岩 

分 类 号：P534.3[天文地球—古生物学与地层学] P588.212.3[天文地球—地质学] P512.1