{"id":"b505620c-2433-462e-a56c-88a7d682a680","title":"西藏申扎木纠错剖面二叠系地层柱状图（含腕足类生物带划分）","title_en":"Permian stratigraphic column of the Mujiucuo section in Xainza County, Tibet (with brachiopod biostratigraphic subdivisions)","serial":"","user_limit":"为尊重知识产权、保障数据作者的权益、扩展数据中心的服务、评估数据的应用潜力，请数据使用者在使用数据所产生的研究成果中（包括公开发表的论文、论著、数据产品和未公开发表的研究报告、数据产品等成果），明确注明数据来源和数据作者。对于转载（二次或多次发布）的数据，作者还须注明原始数据来源。","instructions":"科考地点+剖面名称+地层层位；\n文件以JPG格式存储","description":"申扎木纠错剖面位于木纠错湖西面的高山上，该剖面保存了较好的二叠纪地层。该地的二叠纪地层被划分为永珠组、拉嘎组、昂杰组、下拉组和木纠错组。永珠组以细砂岩为主，顶部夹有灰岩夹层，其中含有腕足类8个种，被划分为Costatumulus-Bandoproductus组合带。拉嘎组以冰碛岩为主，未发现有腕足类化石。下拉组以碳酸盐岩为主，底部紫红色灰岩中含有腕足类6个种，被称为Alispiriferella-Retimarginifera celeteria组合带。其上只有一个腕足类分子Permophricodothyris elegantula。这些腕足类分子化石总体上呈现冈瓦纳分子的色彩，表明当时拉萨地块仍位于距离冈瓦纳大陆不远处。根据蜓类和牙形类化石的限定，83，86，87层的时代为中二叠世；88-89层的时代为晚二叠世。腕足类化石见于多个层位，含21个种，分为两个化石带，分别是下部的Echinauris opuntia-Neoplicatifera组合带和上部的Spinomarginifera lopingensis-Chonetinella cymatilis组合带。与该剖面部的永珠组及下拉组下部的腕足动物群相比，这两个组合中含有广泛的暖水动物群分子，这表明下拉组中上部古生物地理发表明显改变。","doi":"10.11888/Geo.tpdc.271040","projection":"","language":"zh","share_type":"protected","east":89.21,"west":89.21,"south":30.92,"north":30.92,"scale":null,"crs":null,"filesize":1.02,"share_policy":"a","ts_created":"2020-12-22T12:24:14.012834+08:00","doi_type":"拥有自主知识产权","ts_updated":"2021-04-19T19:25:18.329120+08:00","time_description":"293百万年至254百万年","datas_group":3,"time_description_en":"","data_format":null,"project":[11],"specials":["b6500306-f60b-4aa1-b0b6-0324d94866df","b6500306-f60b-4aa1-b0b6-0324d94866df"],"cite":null,"review_status":5,"review_invite":[{"user_name":"张东菊","username":"zhangdj","email":"djzhang@lzu.edu.cn","is_cancel_expert":false},{"user_name":"黄浩","username":"黄浩","email":"geohaohuang@gmail.com","is_cancel_expert":false}],"review_editor":{"id":42421,"last_login":"2022-04-08T15:16:51.670544+08:00","username":"任慧霞","email":"510727846@qq.com","is_active":true,"is_staff":true,"user_name":"任慧霞"},"data_sources":null,"temporal_resolution":"1000 year < x","spatial_resolution":"-","license":"Attribution-NonCommercial-ShareAlike 4.0 International (CC BY-NC-SA 4.0)","fund":[21],"subtopics":{"metadata":"b505620c-2433-462e-a56c-88a7d682a680","three_pole":null,"third_pole":null},"username":"史宇坤","review_time":null,"protected_duration":24,"protected_describe":null,"is_important":false,"hit_count":1042}