| 杨仲杰,张文静,刘学文,张元厚,王晓晗,刘长纯,姜春宇.大兴安岭绰源地区奥陶系多宝山组-苏呼河组解体及时代探讨[J].地质找矿论丛,2018,33(3):409-416 |
| 大兴安岭绰源地区奥陶系多宝山组-苏呼河组解体及时代探讨 |
| Disintegration and discussion on the time of Ordovician Duobaoshan Formation and Suhuhe Formation in Chaoyuan district of Daxing'anling Mountain |
| 投稿时间：2017-04-17 修订日期：2017-07-06 |
| DOI：10.6053/j.issn.1001-1412.2018.03.011 |
| 中文关键词: 奥陶系 多宝山组-苏呼河组解体 地层年代 志留系 大兴安岭绰源地区 内蒙古 |
| 英文关键词:Ordovician Duobaoshan Formation-Suhuhe formation disintegration chronological age Silurian Period Chaoyuan district in Daxing'anling Mountain Inner Mongolia |
| 基金项目:中国地质调查局矿产资源调查项目"内蒙古东部博克图地区矿产远景调查（编号：1212010881205）"资助 |
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| 中文摘要: |
| 大兴安岭绰源地区出露有呈零星分布的老变质岩系，前人对其归属存在一定的争议。文章通过对该套岩石进行的地层学、岩石学、岩石地球化学特征研究和锆石U-Pb测年，探讨了该套变质岩系的原岩性质、形成环境和区域变质作用。结果表明，原岩主要为一套中酸性凝灰岩、砂岩、粉砂岩、泥岩及其过渡类型的碎屑岩；推测其沉积环境为活动大陆边缘的浅海相或浅海-滨海相；该套地层定年为中下志留统。 |
| 英文摘要: |
| The metamorphic rock sequence is exposed sporadically in the Chaoyuan area of Daxinganling Mountains and the formation time controversial. Based on stratigraphy, petrology, rock geochemistry and U-Pb dating age is discussed the original rock property, formation environment and regional metamorphism. The result shows that the original rock is mainly a set of intermediate-acidic tuff, sandstone, siltstone, mudstone and their transitional types of clastic rock deposited under an active continent marginal shallow or shallow-neritic environment. Geological time of the sequence belongs to Middle-Early Silurian Period. |
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