| 河南留山盆地太山庙组沉积相及遗迹化石特征 |
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| 引用本文： | 钟明洋, 胡斌, 刘顺喜, 吴海东, 杨文涛. 河南留山盆地太山庙组沉积相及遗迹化石特征[J]. 煤田地质与勘探, 2010, 38(6): 5-11. DOI: 10.3969/j.issn.1001-1986.2010.06.002 |
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| 作者姓名： | 钟明洋 胡斌 刘顺喜 吴海东 杨文涛 |
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| 作者单位： | 1. 外生成矿与矿山环境重庆市重点实验室, 重庆地质矿产研究院, 煤炭资源与安全开采国家重点实验室重庆研究中心, 重庆 400042; |
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| 基金项目： | 河南省高校科技创新团队项目，河南省科技发展计划项目，高等学校博士学科点专项科研基金，河南理工大学学位论文创新基金 |
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| 摘 要： | 采用沉积学和遗迹学的理论及分析方法，研究了河南留山盆地上三叠统太山庙组的沉积环境。结果显示：该组为一套温暖潮湿气候条件下的河流-湖泊相含煤沉积，整个沉积经历了河流相—湖沼相—滨、浅湖相—深湖相—滨、浅湖相—半深湖相—滨、浅湖相的演化过程，显示该盆地经历了“下降—抬升—下降—抬升”的构造旋回演化过程。在该套地层中已识别出遗迹化石的4个属和4个种,包括Beaconites coronus,Cochlichnus surpuliformis,Palaeophycus tubularis和Planolites montanus等,并详细讨论了该遗迹群落中Beaconites coronus在不同微相中的发育特征,推测其造迹生物最适宜的生境是滨湖环境。该项研究成果可为本区晚三叠世岩相古地理图的编制,进而为矿产资源评价与开发提供理论依据。
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| 关 键 词： | 上三叠统 太山庙组 沉积相 遗迹化石 留山盆地 |
| 收稿时间： | 2009-12-06 |
Depositional facies and characteristic of trace fossils in the upper Triassic Taishanmiao Formation of Liushan basin, Henan Province |
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| ZHONG Mingyang, HU Bin, LIU Shunxi, WU Haidong, YANG Wentao. Depositional facies and characteristic of trace fossils in the upper Triassic Taishanmiao Formation of Liushan basin, Henan Province[J]. COAL GEOLOGY & EXPLORATION, 2010, 38(6): 5-11. DOI: 10.3969/j.issn.1001-1986.2010.06.002 |
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| Authors: | ZHONG Mingyang HU Bin LIU Shunxi WU Haidong YANG Wentao |
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| Affiliation: | 1. Chongqing Key Laboratoty of Exogenic Minerallization and Mine Enviroment, Chongqing Institute of Geology and Mineral Resources, Chongqing Research Center of State Key Laboratory of Coal Resources and Safe Mining, Chongqing 400042, China;2. Institute of Resources and Environment, Henan Polytechnic University, Key Laboratory of Biogenic Traces and Sedimentary Minerals of Henan Province, Jiaozuo 454003, China;3. Faculty of Earth Sciences, China University of Geosciences, Wuhan 430074, China |
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| Abstract: | Based on the research of sedimentology and ichnology, the upper Triassic Taishanmiao Formation in Liushan basin of Henan province is considered to be a set of terrestrial fluvial-lacustrine and coal-bearing depositional system under a warm and moist climate conditions.During the late Triassic, the environmental evolution of this basin was a process as fluvial-lucustrine and swamp-lake shore and shallow lacustrine-deep lacustrine-lake shore and shallow lacustrine-semi-deep lacustrine-lake shore and shallow lacustrine.Therefore, the basin went through such two evolutionary stages of sedimentary cycles as "subside-rise-subside-rise".In this work, 4 ichnogenera and 4 ichnospecies, such as Beaconites coronus, Cochlichnus surpuliformis, Palaeophycus tubularis and Planolites montanus, have been identified in the Taishanmiao Formation.This paper especially discusses the developing features of the Beaconites coronus in different micro-facies, and speculates that the trace-makers of Beaconites adapt best to the shore lake environment.The research result provides the theoretical support to not only the compilation of late Triassic lithofacies palaeogeography map but also the evaluation and development of potential mineral resources in this area. |
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| Keywords: | upper Triassic Taishanmiao Formation sedimentary faceis trace fossil Liushan basin |
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