川西马尔康&mdash;金川地区晚三叠世松潘甘孜残留洋盆复理石建造沉积特征与沉积模式

龚大兴; 郭佳; 罗俊峰; 岳相元; 周雄; 周家云

doi:10.14027/j.issn.1000-0550.2019.031

ISSN 1000-0550 CN 62-1038/P

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川西马尔康—金川地区晚三叠世松潘甘孜残留洋盆复理石建造沉积特征与沉积模式

龚大兴, 郭佳, 罗俊峰, 岳相元, 周雄, 周家云

文章导航 > 沉积学报 > 2019 > 37(6): 1210-1223

龚大兴, 郭佳, 罗俊峰, 岳相元, 周雄, 周家云. 川西马尔康—金川地区晚三叠世松潘甘孜残留洋盆复理石建造沉积特征与沉积模式[J]. 沉积学报, 2019, 37(6): 1210-1223. doi: 10.14027/j.issn.1000-0550.2019.031

引用本文:

GONG DaXing, GUO Jia, LUO JunFeng, YUE XiangYuan, ZHOU Xiong, ZHOU JiaYun. Sedimentary Characteristics and Model of the Triassic Songpan-Ganzi Flysch Basin,in Maerkang-Jinchuan Area,Western Sichuan[J]. Acta Sedimentologica Sinica, 2019, 37(6): 1210-1223. doi: 10.14027/j.issn.1000-0550.2019.031

Citation:

GONG DaXing, GUO Jia, LUO JunFeng, YUE XiangYuan, ZHOU Xiong, ZHOU JiaYun. Sedimentary Characteristics and Model of the Triassic Songpan-Ganzi Flysch Basin,in Maerkang-Jinchuan Area,Western Sichuan[J]. Acta Sedimentologica Sinica, 2019, 37(6): 1210-1223. doi: 10.14027/j.issn.1000-0550.2019.031

引用本文:

Citation:

GONG DaXing, GUO Jia, LUO JunFeng, YUE XiangYuan, ZHOU Xiong, ZHOU JiaYun. Sedimentary Characteristics and Model of the Triassic Songpan-Ganzi Flysch Basin,in Maerkang-Jinchuan Area,Western Sichuan[J]. Acta Sedimentologica Sinica, 2019, 37(6): 1210-1223. doi: 10.14027/j.issn.1000-0550.2019.031

川西马尔康—金川地区晚三叠世松潘甘孜残留洋盆复理石建造沉积特征与沉积模式

doi: 10.14027/j.issn.1000-0550.2019.031

1.
中国地质科学院矿产综合利用研究所, 成都 610041;
2.
四川省地质矿产勘查开发局一〇九地质队, 成都 610100

基金项目: 国家自然科学基金项目（41602120）；地质调查项目（DD20190185）

详细信息

作者简介:
龚大兴,男,1986年出生,博士,沉积地质学、沉积矿产,E-mail:gongdaxing@gmail.com

中图分类号: P588.2

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文章访问数: 234
HTML全文浏览量: 11
PDF下载量: 90
被引次数: 0

Sedimentary Characteristics and Model of the Triassic Songpan-Ganzi Flysch Basin,in Maerkang-Jinchuan Area,Western Sichuan

1.
Institute of Multipurpose Utilization of Mineral Resources, Chinese Academy of Geological Sciences, Chengdu 610041, China;
2.
109 Geological Brigade, Sichuan Bureau of Geology&Mineral Resources, Chengdu 610100, China

Funds: National Natural Science Foundation of China, No. 41602120; Geological Survey Project of China, No. DD20190185

摘要

摘要: 西康群是松潘—甘孜复理石沉积盆地的主体，分布范围广、岩性单调，强烈的构造变形和褶皱叠加导致地层原始的沉积序列、沉积构造破坏殆尽，基于野外露头的沉积学研究较少，巨量复理石的沉积模式也没有合理的解释。详细研究了川西马尔康—金川县一带西康群典型剖面的沉积构造、砂板比、古流向、砂岩粒度及矿物组成，讨论了西康群的沉积环境及沉积模式。认为该区复理石沉积环境属于海底扇扇中—扇端，局部存在砂质碎屑流或等深流的参与和叠加改造；存在两期次的海底扇，其触发机制均为海平面下降，导致三角洲向陆架边缘进积形成海底扇，而随着冲积平原及三角洲复合体的逐渐消耗，沉积物供应量逐渐减小，海底扇的规模及影响范围逐渐缩减，形成两期向岸退积的海底扇沉积。松潘—甘孜盆地复理石建造属于受周缘造山带提供多源或线源，多期次叠加的，以细粒浊积体为主的海底扇，海岸冲积平原及三角洲复合体经过二次搬运使得砾级粗粒沉积物进一步破碎，形成中—细粒砂岩及泥岩为主的扇体沉积。
- 晚三叠世 /
- 松潘&mdash /
- 甘孜盆地 /
- 复理石 /
- 沉积特征 /
- 沉积模式
Abstract: The Xikang Group is the main body of Songpan-Ganzi flysch sedimentary basin. It has a single lithology and is widely distributed. The original stratigraphic sequence and sedimentary structure was destroyed by tectonic deformation and widespread folding. Few sedimentological studies have been done on the outcrop,and sedimentation models do not give a reasonable explanation for the huge amount of flysch observed. In this study,the sedimentary structure,sand plate ratio,paleocurrent direction,sandstone grain size and mineral composition of typical sections in the Maerkang-Jinchuan area in western Sichuan Province were researched in detail,and the sedimentary environment and sedimentary model of the Xikang Group is discussed. It is inferred that the flysch sedimentary environment was a middle-to terminal submarine fan,with sand debris flow and deep flow action and transportation. Two submarine fans were formed triggered by falling sea levels,causing progradation of the delta to the edge of the shelf. As the alluvial plain and delta complex were gradually consumed,the sediment supply and the scale and extent of the submarine fan gradually decreased until finally the second submarine fan was formed by deposition of shore retrogradational material. The flysch formation in the Songpan-Ganzi Basin probably originated as a submarine fan deposit dominated by fine-grained turbidite with multi-period superposition and multi-or single provenance. Coarse sediments were further broken down after the coastal alluvial plain and delta complex depositions were moved for the second time, and finally the main fan was deposited, consisting of middle-to fine-grained sandstone and mudstone.
- Late Triassic /
- Songpan-Ganzi Basin /
- flysch /
- sedimentary characteristics /
- sedimentary model /

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[14]	杨华. 鄂尔多斯盆地西缘晚三叠世构造—沉积环境分析 . 沉积学报, 2011, 29(3): 427-439.
[15]	傅强. 鄂尔多斯盆地晚三叠世湖盆浊积岩发育特征及地质意义 . 沉积学报, 2008, 26(2): 186-192.
[16]	袁静. 山东惠民凹陷古近系风暴岩沉积特征及沉积模式 . 沉积学报, 2006, 24(1): 43-49.
[17]	杨逢清, 熊伟. 四川省壤塘县金木达晚三叠世深水沉积中的遗迹化石及沉积环境分析 . 沉积学报, 2000, 18(1): 73-79.
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[19]	朱筱敏, 信荃麟, 张晋仁. 断陷湖盆滩坝储集体沉积特征及沉积模式 . 沉积学报, 1994, 12(2): 20-28.
[20]	夏邦栋, 吕洪波. 浙西皖南晚奥陶世复理石的沉积环境,兼谈鲍马层序应用问题 . 沉积学报, 1988, 6(4): 44-51.

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川西马尔康—金川地区晚三叠世松潘甘孜残留洋盆复理石建造沉积特征与沉积模式

doi: 10.14027/j.issn.1000-0550.2019.031

1. 中国地质科学院矿产综合利用研究所, 成都 610041;

2. 四川省地质矿产勘查开发局一〇九地质队, 成都 610100

基金项目: 国家自然科学基金项目（41602120）；地质调查项目（DD20190185）

作者简介:
龚大兴,男,1986年出生,博士,沉积地质学、沉积矿产,E-mail:gongdaxing@gmail.com

收稿日期: 2018-10-31
修回日期: 2019-03-12
刊出日期: 2019-12-10

中图分类号: P588.2

关键词:

松潘— /

复理石 /

摘要: 西康群是松潘—甘孜复理石沉积盆地的主体，分布范围广、岩性单调，强烈的构造变形和褶皱叠加导致地层原始的沉积序列、沉积构造破坏殆尽，基于野外露头的沉积学研究较少，巨量复理石的沉积模式也没有合理的解释。详细研究了川西马尔康—金川县一带西康群典型剖面的沉积构造、砂板比、古流向、砂岩粒度及矿物组成，讨论了西康群的沉积环境及沉积模式。认为该区复理石沉积环境属于海底扇扇中—扇端，局部存在砂质碎屑流或等深流的参与和叠加改造；存在两期次的海底扇，其触发机制均为海平面下降，导致三角洲向陆架边缘进积形成海底扇，而随着冲积平原及三角洲复合体的逐渐消耗，沉积物供应量逐渐减小，海底扇的规模及影响范围逐渐缩减，形成两期向岸退积的海底扇沉积。松潘—甘孜盆地复理石建造属于受周缘造山带提供多源或线源，多期次叠加的，以细粒浊积体为主的海底扇，海岸冲积平原及三角洲复合体经过二次搬运使得砾级粗粒沉积物进一步破碎，形成中—细粒砂岩及泥岩为主的扇体沉积。

English Abstract

Sedimentary Characteristics and Model of the Triassic Songpan-Ganzi Flysch Basin,in Maerkang-Jinchuan Area,Western Sichuan

1. Institute of Multipurpose Utilization of Mineral Resources, Chinese Academy of Geological Sciences, Chengdu 610041, China;

2. 109 Geological Brigade, Sichuan Bureau of Geology&Mineral Resources, Chengdu 610100, China

Funds: National Natural Science Foundation of China, No. 41602120; Geological Survey Project of China, No. DD20190185

Received Date: 2018-10-31
Rev Recd Date: 2019-03-12
Publish Date: 2019-12-10

Keywords:

Abstract: The Xikang Group is the main body of Songpan-Ganzi flysch sedimentary basin. It has a single lithology and is widely distributed. The original stratigraphic sequence and sedimentary structure was destroyed by tectonic deformation and widespread folding. Few sedimentological studies have been done on the outcrop,and sedimentation models do not give a reasonable explanation for the huge amount of flysch observed. In this study,the sedimentary structure,sand plate ratio,paleocurrent direction,sandstone grain size and mineral composition of typical sections in the Maerkang-Jinchuan area in western Sichuan Province were researched in detail,and the sedimentary environment and sedimentary model of the Xikang Group is discussed. It is inferred that the flysch sedimentary environment was a middle-to terminal submarine fan,with sand debris flow and deep flow action and transportation. Two submarine fans were formed triggered by falling sea levels,causing progradation of the delta to the edge of the shelf. As the alluvial plain and delta complex were gradually consumed,the sediment supply and the scale and extent of the submarine fan gradually decreased until finally the second submarine fan was formed by deposition of shore retrogradational material. The flysch formation in the Songpan-Ganzi Basin probably originated as a submarine fan deposit dominated by fine-grained turbidite with multi-period superposition and multi-or single provenance. Coarse sediments were further broken down after the coastal alluvial plain and delta complex depositions were moved for the second time, and finally the main fan was deposited, consisting of middle-to fine-grained sandstone and mudstone.

引用本文:

Citation:

GONG DaXing, GUO Jia, LUO JunFeng, YUE XiangYuan, ZHOU Xiong, ZHOU JiaYun. Sedimentary Characteristics and Model of the Triassic Songpan-Ganzi Flysch Basin,in Maerkang-Jinchuan Area,Western Sichuan[J]. Acta Sedimentologica Sinica, 2019, 37(6): 1210-1223. doi: 10.14027/j.issn.1000-0550.2019.031

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川西马尔康—金川地区晚三叠世松潘甘孜残留洋盆复理石建造沉积特征与沉积模式

doi: 10.14027/j.issn.1000-0550.2019.031

作者简介:
龚大兴,男,1986年出生,博士,沉积地质学、沉积矿产,E-mail:gongdaxing@gmail.com

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Sedimentary Characteristics and Model of the Triassic Songpan-Ganzi Flysch Basin,in Maerkang-Jinchuan Area,Western Sichuan

计量

目录

川西马尔康—金川地区晚三叠世松潘甘孜残留洋盆复理石建造沉积特征与沉积模式

doi: 10.14027/j.issn.1000-0550.2019.031

1. 中国地质科学院矿产综合利用研究所, 成都 610041;

2. 四川省地质矿产勘查开发局一〇九地质队, 成都 610100

作者简介:
龚大兴,男,1986年出生,博士,沉积地质学、沉积矿产,E-mail:gongdaxing@gmail.com

English Abstract

Sedimentary Characteristics and Model of the Triassic Songpan-Ganzi Flysch Basin,in Maerkang-Jinchuan Area,Western Sichuan

1. Institute of Multipurpose Utilization of Mineral Resources, Chinese Academy of Geological Sciences, Chengdu 610041, China;

2. 109 Geological Brigade, Sichuan Bureau of Geology&Mineral Resources, Chengdu 610100, China

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川西马尔康—金川地区晚三叠世松潘甘孜残留洋盆复理石建造沉积特征与沉积模式

doi: 10.14027/j.issn.1000-0550.2019.031

作者简介: 龚大兴,男,1986年出生,博士,沉积地质学、沉积矿产,E-mail:gongdaxing@gmail.com

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Sedimentary Characteristics and Model of the Triassic Songpan-Ganzi Flysch Basin,in Maerkang-Jinchuan Area,Western Sichuan

计量

出版历程

目录

川西马尔康—金川地区晚三叠世松潘甘孜残留洋盆复理石建造沉积特征与沉积模式

doi: 10.14027/j.issn.1000-0550.2019.031

1. 中国地质科学院矿产综合利用研究所, 成都 610041; 2. 四川省地质矿产勘查开发局一〇九地质队, 成都 610100

作者简介: 龚大兴,男,1986年出生,博士,沉积地质学、沉积矿产,E-mail:gongdaxing@gmail.com

English Abstract

Sedimentary Characteristics and Model of the Triassic Songpan-Ganzi Flysch Basin,in Maerkang-Jinchuan Area,Western Sichuan

1. Institute of Multipurpose Utilization of Mineral Resources, Chinese Academy of Geological Sciences, Chengdu 610041, China; 2. 109 Geological Brigade, Sichuan Bureau of Geology&Mineral Resources, Chengdu 610100, China

全文HTML

目录

友情链接

期刊在线

联系我们

作者简介:
龚大兴,男,1986年出生,博士,沉积地质学、沉积矿产,E-mail:gongdaxing@gmail.com

1. 中国地质科学院矿产综合利用研究所, 成都 610041;

2. 四川省地质矿产勘查开发局一〇九地质队, 成都 610100

作者简介:
龚大兴,男,1986年出生,博士,沉积地质学、沉积矿产,E-mail:gongdaxing@gmail.com

1. Institute of Multipurpose Utilization of Mineral Resources, Chinese Academy of Geological Sciences, Chengdu 610041, China;

2. 109 Geological Brigade, Sichuan Bureau of Geology&Mineral Resources, Chengdu 610100, China