干旱区生态环境知识资源中心(Arid): 中国北方烧变岩的分布、特征及研究意义

Arid

	中国北方烧变岩的分布、特征及研究意义
其他题名	Distribution,characteristics and significances of burnt rocks in northern China
	时志强; 王美玲; 陈彬
来源期刊	古地理学报
ISSN	1671-1505
出版年	2021
卷号	23 期号:6 页码:1067-1081
中文摘要	中国北方烧变岩分布广泛,见于以昆仑山-秦岭-大别山为界的中国北方地区多个沉积盆地边缘,但地质学家对其研究较为薄弱。野外调查显示中国北方烧变岩主要以4种方式分布: (1)大面积连片分布, (2)沿山脉走向的线状分布,(3)沿河流下切河谷分布,(4)为第四系黄土覆盖。烧变岩主要为侏罗系、石炭-二叠系煤层自燃所致。各类型的烧变岩在中国烧变岩区不同程度发育,具瓷化结构、白化结构、烧熔结构、残余构造、气孔构造、微柱状节理、角砾状构造、垮塌构造、裂缝充填等结构和构造。其颜色以砖红色、赭红色、棕色、钢灰色最为典型,岩石中发育鳞石英、方石英、堇青石、铁堇青石、莫来石等典型高温矿物。中新世以来,中国西部、北部地区构造活动强烈,干旱气候加剧,烧变岩也主要形成于这一时期,但煤层自燃与构造运动、环境变化、古野火事件的耦合关系还鲜有提及,其所蕴含的各种地质信息值得在今后的研究中予以关注。
英文摘要	Burnt rocks are widely distributed in many sedimentary basins located in the northern China that are bounded by Kunlun mountain-Qinling-Dabie mountain. However,few studies have focused on the origin,age and geological significance of these kinds of metamorphic rocks. Based on our field investigation, four distribution modes of the burnt rocks are found: (1) large area distribution,(2) linear distribution along the mountain range alignment, (3) distribution along the river incised-valley and (4) covered by the Quaternary loess. These burnt rocks were mainly caused by the self-ignition of Jurassic and Carboniferous-Permian coals. Various burnt rocks developed in the burnt rock area on different levels. The vitrified structure,whitened structure,lava structure,residual structure,pore structure,columnar jointing structure,breccia structure,fissure structure and filling minerals are often found in these burnt rocks. The burnt rocks are mainly red,mixed with brown,black and steel-gray colors. The typical high temperature minerals as cristobalite,tridymite,cordierite,sekaninaite and mullite are common in these burnt rocks. The active tectonic movements and arid climate in northwestern China triggered the formation of burnt rocks since the Miocene. The relationship between the palaeotectonic,palaeoclimate,palaeowildfire and the coal self-ignition,however,has been seldomly studied. Such information implied from the formation of burnt rocks should be paid more attention in the future work.
中文关键词	烧变岩 ; 煤层自燃 ; 燃烧变质作用 ; 古野火 ; 含煤地层
英文关键词	burnt rock coal self-ignition combustion metamorphism palaeo-wildfire coalbearing stratum
类型	Review
语种	中文
收录类别	CSCD
WOS类目	Geology
CSCD记录号	CSCD:7097189
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/377709
作者单位	时志强, 成都理工大学沉积地质研究院, 成都, 四川 610059, 中国.; 王美玲, 成都理工大学沉积地质研究院, 成都, 四川 610059, 中国.; 陈彬, 聊城大学地理与环境学院, 聊城, 山东 252000, 中国.
推荐引用方式 GB/T 7714	时志强,王美玲,陈彬. 中国北方烧变岩的分布、特征及研究意义[J],2021,23(6):1067-1081.
APA	时志强,王美玲,&陈彬.(2021).中国北方烧变岩的分布、特征及研究意义.古地理学报,23(6),1067-1081.
MLA	时志强,et al."中国北方烧变岩的分布、特征及研究意义".古地理学报 23.6(2021):1067-1081.