西秦岭地区晚二叠世—早三叠世沉积相分析和沉积古环境再造

罗根明

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西秦岭地区晚二叠世—早三叠世沉积相分析和沉积古环境再造

罗根明

文章导航 > 沉积学报 > 2007 > 25(3): 332-342

罗根明. 西秦岭地区晚二叠世—早三叠世沉积相分析和沉积古环境再造[J]. 沉积学报, 2007, 25(3): 332-342.

引用本文:

罗根明. 西秦岭地区晚二叠世—早三叠世沉积相分析和沉积古环境再造[J]. 沉积学报, 2007, 25(3): 332-342.

LUO Genming. Sedimentary Facies Analysis and Sedimentary Environment Reconstruction from Late Permian to Early Triassic of West Qinling Area[J]. Acta Sedimentologica Sinica, 2007, 25(3): 332-342.

Citation:

LUO Genming. Sedimentary Facies Analysis and Sedimentary Environment Reconstruction from Late Permian to Early Triassic of West Qinling Area[J]. Acta Sedimentologica Sinica, 2007, 25(3): 332-342.

罗根明. 西秦岭地区晚二叠世—早三叠世沉积相分析和沉积古环境再造[J]. 沉积学报, 2007, 25(3): 332-342.

引用本文:

罗根明. 西秦岭地区晚二叠世—早三叠世沉积相分析和沉积古环境再造[J]. 沉积学报, 2007, 25(3): 332-342.

Citation:

西秦岭地区晚二叠世—早三叠世沉积相分析和沉积古环境再造

罗根明

中国地质大学地球科学学院武汉 430074

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罗根明

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Sedimentary Facies Analysis and Sedimentary Environment Reconstruction from Late Permian to Early Triassic of West Qinling Area

LUO Genming

Faculty of Earth Sciences, China University of Geosciences,Wuhan 430074

More Information

Corresponding author: LUO Genming

摘要

摘要: 青海省同仁地区处于祁连和秦岭造山带的接合部，构造演化历史悠久。本次工作在该地区隆务河一带发现较好的二叠—三叠系剖面。将该剖面从下而上划分为上二叠统石关组、下三叠统果木沟组和江里沟组，其中江里沟组又进一步划分为下部的浊积岩段和上部的风暴岩段，初步确定了二叠—三叠纪的界线。沉积序列、沉积相和沉积物表明上二叠统石关组和下三叠统果木沟组为一套陆源碎屑浊积岩，下三叠统江里沟组下部为一套不纯的内碎屑浊积岩，而下三叠统江里沟组上部为风暴岩沉积。根据沉积相和火山岩夹层的地球化学特征认为该地区上二叠统石关组和下三叠统果木沟组处于半深海的活动大陆边缘，下三叠统江里沟组早期的浊积岩段处于较稳定的半深海大陆边缘。根据沉积相和遗迹化石，恢复了晚二叠世—早三叠世的海平面变化特征。
- 沉积相 /
- 沉积环境 /
- 西秦岭 /
- 晚二叠世 /
- 早三叠世
Abstract: Tongren area of Qinghai province is located on the copulae of Qilian and Qinling orogene, of which the structure evolution history is very famous. A continuous PermianTriassic stratum was found in Longwuhe area during this work. In ascending order, this section is divided into Shiguan Formation of upper Permian, Guomugou Formation and Jiangligou Formation of lower Triassic, while Jiangligou Formation is divided into turbidite Member at the lower and tempestite Member at the upper. Primary PermianTriassic Boundary is definited in this work. Sedimentary sequence, sedimentary facies and sediments indicate the Shiguan Formation of upper Permian and Guomugou Formation of lower Triassic are terrigenous clastic turbidite, while the lower parts of Jiangligou Formation of lower Triassic is intraclast turbidite and upper is tempestite. According to the sedimentary facies and geochemistry of interlayer igneous rock, the Shiguan Formation and Guomugou Formation were located at active hemipelagic continental margin, while the Turbidite Member of Jiangligou Formation was located at steady hemipelagic continental margin. The sea level turns down and the sedimentary environment transited into neritic shelf during the tempestite Member of Jiangligou Formation. Based on the sedimentary facies characteristic, this paper reconstructed the eustatic changes during Late Permian and Early Triassic.
- sedimentary facies /
- sedimentary environment /
- west Qinling /
- Late Permian /
- Early Triassic

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[1]	韦恒叶, 张淦, 张璇, 胡谍, 龚嘉欣. 中上扬子区上二叠统大隆组硅质岩沉积终结年龄【“华南古大陆演化及其资源环境效应”专辑】 . 沉积学报, 2024, (): -. doi: 10.14027/j.issn.1000-0550.2024.065
[2]	张风顺, 谭谦, 施泽进, 彭秋, 易驰. 早三叠世鲕粒和巨鲕差异成因及其古环境意义——以川北元坝地区为例 . 沉积学报, 2023, (): -. doi: 10.14027/j.issn.1000-0550.2023.083
[3]	高抒. 南京地区早三叠世碳酸盐沉积动力过程初探 . 沉积学报, 2023, 41(6): 1673-1680. doi: 10.14027/j.issn.1000-0550.2023.124
[4]	惠浪波, 郭进京, 韩文峰, 王丽丽, 毕娜, 向光娅. 西秦岭北缘武山地区上白垩统沙漠相沉积特征 . 沉积学报, 2017, 35(4): 649-663. doi: 10.14027/j.cnki.cjxb.2017.04.001
[5]	朱迎堂, 方小敏, 高军平, 伊海生, 王世锋, 张伟林. 青藏高原南部乌郁盆地渐新世—上新世地层沉积相分析 . 沉积学报, 2006, (6): 775-782.
[6]	朱迎堂方小敏高军平伊海生王世锋张伟林. 青藏高原南部乌郁盆地渐新世—上新世地层沉积相分析 . 沉积学报, 2006, 24(06): 775-782.
[7]	谢小平, 王永栋, 沈焕庭. 宁夏中卫晚石炭世沉积相分析与古环境重建 . 沉积学报, 2004, 22(1): 19-28.
[8]	谢小平, 佟再三, 沈焕庭. 甘肃景泰红水堡晚石炭世沉积环境与沉积相分析 . 沉积学报, 2003, 21(3): 381-390.
[9]	吴少波. 博格达山前凹陷上二叠统乌拉泊组沉积相及沉积模式 . 沉积学报, 2001, 19(3): 333-339.
[10]	晋慧娟, 李育慈. 西秦岭造山带中三叠统复理石相研究 . 沉积学报, 2001, 19(3): 321-326.
[11]	邵龙义, 刘红梅, 田宝霖, 张鹏飞. 上扬子地区晚二叠世沉积演化及聚煤 . 沉积学报, 1998, 16(2): 55-60,108.
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西秦岭地区晚二叠世—早三叠世沉积相分析和沉积古环境再造

罗根明

中国地质大学地球科学学院武汉 430074

通讯作者: 罗根明

收稿日期: 1900-01-01
修回日期: 1900-01-01
刊出日期: 2007-06-10

关键词:

沉积相 /

沉积环境 /

西秦岭 /

晚二叠世 /

早三叠世

摘要: 青海省同仁地区处于祁连和秦岭造山带的接合部，构造演化历史悠久。本次工作在该地区隆务河一带发现较好的二叠—三叠系剖面。将该剖面从下而上划分为上二叠统石关组、下三叠统果木沟组和江里沟组，其中江里沟组又进一步划分为下部的浊积岩段和上部的风暴岩段，初步确定了二叠—三叠纪的界线。沉积序列、沉积相和沉积物表明上二叠统石关组和下三叠统果木沟组为一套陆源碎屑浊积岩，下三叠统江里沟组下部为一套不纯的内碎屑浊积岩，而下三叠统江里沟组上部为风暴岩沉积。根据沉积相和火山岩夹层的地球化学特征认为该地区上二叠统石关组和下三叠统果木沟组处于半深海的活动大陆边缘，下三叠统江里沟组早期的浊积岩段处于较稳定的半深海大陆边缘。根据沉积相和遗迹化石，恢复了晚二叠世—早三叠世的海平面变化特征。

English Abstract

Sedimentary Facies Analysis and Sedimentary Environment Reconstruction from Late Permian to Early Triassic of West Qinling Area

LUO Genming

Faculty of Earth Sciences, China University of Geosciences,Wuhan 430074

Corresponding author: LUO Genming

Received Date: 1900-01-01
Rev Recd Date: 1900-01-01
Publish Date: 2007-06-10

Keywords:

Abstract: Tongren area of Qinghai province is located on the copulae of Qilian and Qinling orogene, of which the structure evolution history is very famous. A continuous PermianTriassic stratum was found in Longwuhe area during this work. In ascending order, this section is divided into Shiguan Formation of upper Permian, Guomugou Formation and Jiangligou Formation of lower Triassic, while Jiangligou Formation is divided into turbidite Member at the lower and tempestite Member at the upper. Primary PermianTriassic Boundary is definited in this work. Sedimentary sequence, sedimentary facies and sediments indicate the Shiguan Formation of upper Permian and Guomugou Formation of lower Triassic are terrigenous clastic turbidite, while the lower parts of Jiangligou Formation of lower Triassic is intraclast turbidite and upper is tempestite. According to the sedimentary facies and geochemistry of interlayer igneous rock, the Shiguan Formation and Guomugou Formation were located at active hemipelagic continental margin, while the Turbidite Member of Jiangligou Formation was located at steady hemipelagic continental margin. The sea level turns down and the sedimentary environment transited into neritic shelf during the tempestite Member of Jiangligou Formation. Based on the sedimentary facies characteristic, this paper reconstructed the eustatic changes during Late Permian and Early Triassic.

罗根明. 西秦岭地区晚二叠世—早三叠世沉积相分析和沉积古环境再造[J]. 沉积学报, 2007, 25(3): 332-342.

引用本文:

罗根明. 西秦岭地区晚二叠世—早三叠世沉积相分析和沉积古环境再造[J]. 沉积学报, 2007, 25(3): 332-342.

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西秦岭地区晚二叠世—早三叠世沉积相分析和沉积古环境再造

通讯作者:
罗根明

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Sedimentary Facies Analysis and Sedimentary Environment Reconstruction from Late Permian to Early Triassic of West Qinling Area

Corresponding author: LUO Genming

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西秦岭地区晚二叠世—早三叠世沉积相分析和沉积古环境再造

中国地质大学地球科学学院武汉 430074

通讯作者: 罗根明

English Abstract

Sedimentary Facies Analysis and Sedimentary Environment Reconstruction from Late Permian to Early Triassic of West Qinling Area

Faculty of Earth Sciences, China University of Geosciences,Wuhan 430074

Corresponding author: LUO Genming

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西秦岭地区晚二叠世—早三叠世沉积相分析和沉积古环境再造

通讯作者: 罗根明

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Sedimentary Facies Analysis and Sedimentary Environment Reconstruction from Late Permian to Early Triassic of West Qinling Area

Corresponding author: LUO Genming

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出版历程

目录

西秦岭地区晚二叠世—早三叠世沉积相分析和沉积古环境再造

中国地质大学地球科学学院 武汉 430074

通讯作者: 罗根明

English Abstract

Sedimentary Facies Analysis and Sedimentary Environment Reconstruction from Late Permian to Early Triassic of West Qinling Area

Faculty of Earth Sciences, China University of Geosciences,Wuhan 430074

Corresponding author: LUO Genming

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通讯作者:
罗根明

中国地质大学地球科学学院武汉 430074