| 华北燕山裂陷槽中元古代深水藻类生物沉积及其环境 |
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| 引用本文： | 段冶,段吉业.华北燕山裂陷槽中元古代深水藻类生物沉积及其环境[J].吉林大学学报(地球科学版),2011(Z1):154-161. |
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| 作者姓名： | 段冶 段吉业 |
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| 作者单位： | 沈阳师范大学古生物研究所;吉林大学地球科学学院; |
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| 基金项目： | 国家自然科学基金项目(41072011); 生物地质与环境地质教育部重点实验室基金(BGEG0601); 沈阳师范大学实验室主任基金(SYZX1001) |
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| 摘 要： | 河北平泉燕山裂陷槽中元古代地层中,藻席-藻团-藻丝-藻屑-泥晶薄层交替形成韵律沉积。经对系列标本(薄片)特征及其不同结构类型的对比分析,认为它们是在风暴浪基面之下,具风暴流浊积特征的深水藻类生物沉积系列。浅海叠层石及其他底栖藻类构成了从浅海至半深海上部浅水一个完整的藻类沉积序列,其不同类型的特征则成为鉴别沉积时各环境要素的可靠依据,即依据不同藻类生物沉积类型———藻席、藻团、藻丝及藻层的组合序列变化,作为判别200～400 m半深海浅水环境的依据。
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| 关 键 词： | 华北 燕山裂陷槽 中元古代 藻类生物沉积 生物 |
Sub-Abysmal Algal Biosediments and Environmental Analysis of the Mesoproterozoic Yanshan Aulacogen,North China |
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| DUAN Ye,DUAN Ji-ye, .Palaeontological Institute,Shenyang Normal University,Shenyang ,China .College of Earth Sciences,Jilin University,Changchun ,China.Sub-Abysmal Algal Biosediments and Environmental Analysis of the Mesoproterozoic Yanshan Aulacogen,North China[J].Journal of Jilin Unviersity:Earth Science Edition,2011(Z1):154-161. |
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| Authors: | DUAN Ye DUAN Ji-ye Palaeontological Institute Shenyang Normal University Shenyang China College of Earth Sciences Jilin University Changchun China |
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| Institution: | DUAN Ye1,DUAN Ji-ye1,2 1.Palaeontological Institute,Shenyang Normal University,Shenyang 110034,China 2.College of Earth Sciences,Jilin University,Changchun 130061,China |
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| Abstract: | The authors have dealt with a sequence of rhythmic deposition consisting alternatively of algal mats,algal balls,algal filaments,algal pellets and micrites in the strata of the Mesoproterozoic Yanshan aulacogen in Pingquan County,Hebei Province.Based on correlation and analysis on features and structural types of a series of specimens(also thin section),the present authors suggest that the rhythmic deposition represent a sub-abysmal algal sedimental system of storm flow turbidite below storm wave base.The a... |
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| Keywords: | North China Yanshan aulacogen Mesoproterozoic algal biosediments biology |
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