[1]宋旭波.酒西盆地始新世火烧沟组砂岩碎屑组分特征及其地质意义[J].华东地质,2017,38(02):99-107.[doi:10.16788/j.hddz.32-1865/P.2017.02.003]
 SONG Xu-bo.Characteristics of sandstone detrital components of the Eocene Huoshaogou Formation in the Jiuxi basin and its geological implications[J].East China Geology,2017,38(02):99-107.[doi:10.16788/j.hddz.32-1865/P.2017.02.003]
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酒西盆地始新世火烧沟组砂岩碎屑组分特征及其地质意义()
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《华东地质》[ISSN:2096-1871/CN:32-1865/P]

卷:
38
期数:
2017年02期
页码:
99-107
栏目:
基础地质
出版日期:
2017-06-15

文章信息/Info

Title:
Characteristics of sandstone detrital components of the Eocene Huoshaogou Formation in the Jiuxi basin and its geological implications
文章编号:
2096-1871(2017)02-099-09
作者:
宋旭波
(成都理工大学地球科学学院,成都 610059)
Author(s):
SONG Xu-bo
(College of Earth Science, Chengdu University of Technology, Chengdu 610059, China)
关键词:
岩屑 石英 长石 砂岩碎屑 火烧沟组 酒西盆地
Keywords:
rock fragments quartz feldspar sandstone fragments Huoshaogou Formation Jiuxi basin
分类号:
P588.21
DOI:
10.16788/j.hddz.32-1865/P.2017.02.003
文献标志码:
A
摘要:
酒西盆地位于阿尔金左旋走滑断裂和北祁连断裂相交的三角地区,对研究青藏高原北缘新生代早期构造—沉积演化具有重要意义。通过研究酒西盆地红柳峡剖面和火烧沟剖面始新统火烧沟组砂岩碎屑组分类型、形态及石英阴极发光特征,发现大量岩屑、长石和石英颗粒具有明显的变质岩来源特征,认为火烧沟组物源为变质岩。结合酒西盆地地质构造背景及盆地NW向古水流特征,通过系统分析该盆地周缘可提供物源的高点(阿尔金山、祁连山)区域岩性特征,认为酒西盆地火烧沟组物源来自阿尔金山,推测阿尔金左旋走滑断裂的断距应>450 km。
Abstract:
The Jiuxi basin is located within the triangle area which is surrounded by the North Qilian fault to southwest and Altyn Tagh fault to northwest, and is of an important significance in understanding the Cenozoic tectonic-sedimentary evolution of the northern Tibetan Plateau. In this paper, we carried out a detailed study of sandstones of the Eocene Huoshaogou Formation in the Hongliuxia and Huoshaogou sections, using detrital components, morphology and cathodoluminescence of quartzs. The results show that the rock fragments, quartze detritals and feldspar detritals of the sandstone from the Huoshaogou Formation are typical characteristics of the metamorphic rocks origin. In combination with the geological, structural background and palewater features of the Jiuxi basin, this study systematically analyzed the regional rock features of Altyn and Qilian mountains, which provided the materials for studying the Huoshaogou Formation in the Jiuxi basin. It can be concluded that the provenance of the Huoshaogou Formation in the Jiuxi basin might derive from the Altun Mountains, and the offset of the Altyn left-lateral strike-slip fault should be more than 450 km.

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备注/Memo

备注/Memo:
*收稿日期:2016-07-12 修订日期:2016-09-29 责任编辑:谭桂丽
第一作者简介:宋旭波,1992年生,男,硕士研究生,主要从事矿物学、岩石学和矿床学研究。
更新日期/Last Update: 2017-06-16