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世界地质 2018, 37(4) 1085-1091 DOI:
ISSN: 1004-5589 CN: 22-1111/P |
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| 基础地质 |
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辽北地区新元古代原殷屯组岩石地层单位的重新划分及其地质意义 |
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卢崇海，田德欣，李彪，邵九龙，刘振伟，赵娇，卢思桥 |
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1. 辽宁省矿产勘查院，沈阳 110031; 2. 辽宁省地质矿产研究院，沈阳 110032 |
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摘要：
本次研究把 20 世纪八十年代初期完成的辽宁 1∶ 5 万大甸子、下肥地和上年马洲幅区调报告中 所建立的震旦系殷屯组 3 个岩性段，即底部砾岩段、中部砂岩段和上部板岩、页岩段，分别厘定为新 元古界北方系 ( 南华系) 殷屯组、陈千户组和汎河组。并确认出殷屯组为辽宁北方系 ( 南华系) 第 一次陆相冰碛作用的产物; 陈千户组为陆相间冰期沉积的产物; 汎河组为辽宁第二次陆相冰湖相堆积 的产物。上述组级岩石地层单位的厘定，首次在辽宁北部地区划分出 2 次冰水堆积物。 |
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关键词：
辽北地区
殷屯组
陈千户组
汎河组
二次冰期
间冰期
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Ｒe-division of lithostratigraphic units of previous Neoproterozoic Yintun Formation and its geological significance in northern Liaoning |
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LU Chong-hai，TIAN De-xin，LI Biao，SHAO Jiu-long，LIU Zhen-wei，ZHAO Jiao，LU Si-qiao |
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1. Liaoning Institute of Mineral Exploration，Shenyang 110031，China; 2. Liaoning Institute of Geology and Mineral Ｒesources，Shenyang 110032，China |
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Abstract:
Sinian Yintun Formation was originally established during the 1∶ 50 000 regional geological survey in Dadianzi，Xiafeidi and Shangnianmazhou area in the early eighties of 20 century． In this study，the authors rede- fined the previous three lithologic units of Yintun Formation as Yintun，Chenqianhu and Fanhe formations of Neo- proterozoic Beifang System (Nahua System)． Meanwhile，it is confirmed that Yintun Formation was the product of the first continental moraine in Beifang System (Nahua System) in Liaoning，Chenqianhu Formation was the prod- uct of continental interglacial deposition，and Fanhe Formation was the product of the second continental glacial la- custrine deposit in Liaoning． It is the first time to determine two ice-water deposits in northern Liaoning． |
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Keywords:
northern Liaoning
Yintun Formation
Chenqianhu Formation
Fanhe Formation
twice ice age
interglacial period
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| 本刊中的类似文章 |
| 1．田德欣, 卢崇海, 蔡新明, 王彬娜, 徐耸, 王强, 卢思桥.辽南新元古代桥头组海相冰碛沉积事件[J]. 世界地质, 2018,37(4): 1092-1100 |
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