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[1]田景春,陈洪德,侯明才,等.右江盆地晚古生代白云岩特征及成因研究[J].地球科学与环境学报,2004,26(03):1-6.
 TIAN Jing-chun,CHEN Hong-de,HOUMing-cai,et al.Study on feature and origin of dolomite of late palaeozoic in Youjiang basin[J].Journal of Earth Sciences and Environment,2004,26(03):1-6.
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《地球科学与环境学报》[ISSN:1672-6561/CN:61-1423/P]

卷:
第26卷
期数:
2004年第03期
页码:
1-6
栏目:
出版日期:
2004-09-20

文章信息/Info

Title:
Study on feature and origin of dolomite of late palaeozoic in Youjiang basin
作者:
田景春12陈洪德12侯明才2覃建雄2周雁2夏青松2
1.成都理工大学油气藏地质及开发工程国家重点实验室,四川成都610059; 2.成都理工大学沉积地质研究所,四川成都610059
Author(s):
TIAN Jing-chun12CHEN Hong-de12HOUMing-cai2 QIN Jian-xiong2ZHOU Yan2XIA Qing-song2
1 .State key laboratory of oil and gas reservoir geology and exploitation , Chengdu , 610059 , China ; 2 .Institute of Sedimentary Geology , Chengdu University of Technology , Chengdu , 610059, China
关键词:
右江盆地晚古生代白云岩特征成因
Keywords:
Youjiang Basin Late Palaeozoic dolomite feature origin
分类号:
P588.245
DOI:
-
文献标志码:
A
摘要:
右江盆地在晚古生代沉积演化过程中,在各个时代、各层位均有白云岩形成,但不同层位白云 岩发育的规模有明显差异。宏观上在剖面上产出的形态有层状、斑块状、透镜状、角砾状、裂缝状等;微 观上白云石的形态可以分为:自形半自形密集状、自形星散状、半自形他形不规则状、自形半自形缝 合线状、他形生物腔充填状、自形他形生物组织状和他形的脉状等。在上述基础上讨论了白云岩的岩 石学特征,主要包括有结构残余的白云岩、无结构残余的白云岩、强烈交代的白云岩和含泥)硅质白云 岩四大类,其中无结构残余的白云岩又包括粉晶白云岩、中细晶白云岩和粗晶白云岩三类。论述了白 云岩产出的环境从台地※台地边缘※斜坡※盆地均有产出。正是由于沉积环境的关系,也导致白云岩 产出的宏观产状特征从厚层块状大套台地)※中厚层台缘)※角砾状斜坡)※薄层或夹层台盆),进 而建立了白云岩的成因模式。通过对研究区内白云岩的上述特征研究可以看出,区内白云岩为成岩交 代的产物,但不同宏观特征的白云岩其成因机制和过程是不同的。可以分为两种类型,一种为深水白云 石化作用形成的白云岩,另一种为浅水白云石化作用形成的白云岩。
Abstract:
During the sedimetary evolution of Late Paleozoic in Youjiang Basin , the dolomite formed in every era or horizon.But the scale of dolomite has evident difference in different horizon .In macroscopic , the shapes in profiles show in lay , parapsoriasis, lentoid, ataxitic and fissured, etc.In microcosmic , the shapes of dolomite include idiomorphic granular-hypautomorphic , automorphic, hypautomorphic-anhedral irregular, granular -hypautomorphic stylolite line , anhedral biopak filling , idiomorphic granular-anhedral biologic organize and anhedral veiny , etc .On the base of above study , this paper discusses the petrological feature of dolomite which included relic structure dolomite , relic-free structure dolomite , intense replacement dolomite and silica dolomite , expounded dolomite-forming environments which include carbonate plateform, carbonate plateform margin reef, slope and basin.The sedimentary environment has affected the macroscopic feature of occurrence which includes thick-beddedplatform), mediumbedmargin reef), ataxiticslope), thin layer or interlayerbasin).So the origin model has been built .Through the research of dolomite in this area , it can be concluded that dolomite is the result of diagenetic replacement. But the origin mechanics and process are different for dolomite with different feature in macroscopic .They can be divided into two types :one is formed through dolomitization in deepwater , the other is formed through dolomitization in shallow water .

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备注/Memo

备注/Memo:
[收稿日期]2003-08-06
[基金项目]中国石化集团公司十五重点项目P000251)
[作者简介]田景春1963-),男,河南镇平人,教授,博士生导师,现从事沉积学、层序地层学和储层沉积学的教学和科研工作。
更新日期/Last Update: 2004-09-20