[1]吴孔友,查 明,洪 梅.2003.准噶尔盆地不整合结构模式及半风化岩石的再成岩作用.大地构造与成矿学,27(3):270-276.
 WU Kong-you,ZHA Ming and HONG Mei.2003.STRUCTURE MODELS OF UNCONFORMITY AND SECONDARY DIAGENESIS OF SEMI-WEATHERING ROCK IN JUNGGAER BASIN.Geotectonica et Metallogenia,27(3):270-276.
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准噶尔盆地不整合结构模式及半风化岩石的再成岩作用
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《大地构造与成矿学》[ISSN:ISSN 1001-1552/CN:CN 44-1595/P]

卷:
期数:
2003年27卷03期
页码:
270-276
栏目:
出版日期:
2003-08-25

文章信息/Info

Title:
STRUCTURE MODELS OF UNCONFORMITY AND SECONDARY DIAGENESIS OF SEMI-WEATHERING ROCK IN JUNGGAER BASIN
作者:
吴孔友查 明洪 梅
石油大学(华东)地球资源与信息学院,山东 东营 257061
Author(s):
WU Kong-youZHA Ming and HONG Mei
University of Petroleum, Shandong,Dongying 257061,China
关键词:
准噶尔盆地不整合结构模式半风化岩石再成岩作用
Keywords:
Junggar basin unconformity structure model semi-weathering rock secondary diagenesis
分类号:
P542+.34; P618.13
文献标志码:
A
摘要:
由于风化剥蚀程度的不均一性及后期水进形成上覆岩石使得不整合纵向可分为三层结构:不整合面之上岩石、风化粘土层和半风化岩石。准噶尔盆地不整合面之上岩石类型主要包括底砾岩、水进砂体与煤层,它们的发育受控于构造运动强度、古气候、古地形及暴露时间,其中底砾岩分布最为广泛,而且孔渗性好,构成流体的良好运移通道。风化粘土层在上覆沉积物压实作用下岩性较致密,是一套良好的封盖层。半风化岩石类型有砂质岩类、泥质岩类和火山岩类,它们均能形成风化淋滤带,改善其孔隙结构,增大储集空间,其中火山岩岩溶作用较强,次生孔隙发育带最厚,砂质岩类次之,泥质岩类较差
Abstract:
The structure of unconformity can be divided into three layers: rock above the unconformity surface, weathering clay and paleokarst zone, according to heterogeneity of erosion and rocks formed by transgression. In Junggar basin the rocks above unconformity surface mainly are bottom conglomerates, transgressive sands and coal beds. Forming of these rocks was controlled by tectonic strength, paleoclimate, paleoterrain and exposed periods. The bottom conglomerate distributes broadly and has higher porosity and permeability, which is a good migrating network for hydrocarbons. Weathering clay was compact in compressing of upper rocks and constituted good seals. Semi-weathering rocks consist of sandstone, mudstone and volcanic rocks, and they can form paleokarst zones, improve porous structure and extend porous volumes. Since karsting was stronger in volcanic rocks, its secondary porous zone is the most thick, whereas sandstone is moderate and mudstone is thin in thickness.

参考文献/References:

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备注/Memo

备注/Memo:
收稿日期:2002-11-12;改回日期:2003-01-28 基金项目:国家自然科学基金项目(40102008)和石油大学博士基金项目共同资助. 作者简介:吴孔友(1971-),男,博士生,讲师,主要从事油区构造与盆地分析等方面教学与科研工作,电话:0546—8396864,E-mail:wukongyou@sina.com
更新日期/Last Update: 2003-08-15