鄂尔多斯盆地奥陶系白云岩碳氧同位素分析

刘德良; 孙先如; 李振生; 唐南安; 谈迎; 刘波

doi:10.11781/sysydz200602155

鄂尔多斯盆地奥陶系白云岩碳氧同位素分析

doi: 10.11781/sysydz200602155

1.
中国科技大学, 地球与空间科学院, 合肥, 230026
2. 安徽地质实验研究所, 合肥, 230001
3. 中国地质科学院, 西安地质矿产研究所, 西安, 710054

基金项目: 国家自然科学基金(40472074);国家重点基础研究规划项目(2001CB209133)

详细信息

作者简介:
刘德良(1938- ),男(汉族),安徽凤阳人,教授、博士生导师,从事构造地质学、构造地球化学和天然气地质学的教学和科研.

中图分类号: TE135
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出版历程
- 收稿日期: 2005-05-03
- 修回日期: 2006-01-23
- 刊出日期: 2006-03-28

ANALYSIS OF CARBON AND OXYGEN ISOTOPE ON THE ORDOVICIAN DOLOSTONES IN THE ORDOS BASIN

1.
School of Earth and Space Sciences, University of Science and Technology of China, Hefei, Anhui 230026, China
2. Institute of Geological Experiment of Anhui Province, Hefei, Anhui 230001, China
3. Xi'an Institute of Geology and Mineral Resources, Xi'an, Shannxi 710054, China

摘要

摘要: 对鄂尔多斯盆地奥陶系白云岩成因类型与碳氧同位素的关系进行了研究。准同生白云岩碳氧同位素值重,δ¹³C介于0.639‰~-2.2‰之间,δ¹⁸O值介于-0.2‰~-8.668‰,产生于咸化水体;成岩白云岩的δ¹³C介于0.9‰~-3.2‰,δ¹⁸O介于-1.7‰~-7.607‰,产生于高镁咸化水体;深埋白云岩碳氧同位素值轻,δ¹³C介于0.580‰~-3.7‰,δ¹⁸O介于-6.88‰~-9.97‰,形成于温度较高、盐度较低、含镁亦较低的环境。白云岩中的碳酸盐脉δ¹³C集中在-1.00‰~-5.66‰,而灰岩中碳酸盐脉δ¹³C集中在-1.30‰~-8.65‰;碳酸盐脉氧同位素值较轻且变化较小,δ¹⁸O介于-10.66‰~-18.91‰,Z峰值集中在100和110,表明碳酸盐脉形成受到淡水淋滤。
- 碳氧同位素 /
- 白云岩 /
- 奥陶系 /
- 鄂尔多斯盆地
Abstract: In order to know the formation surroundings of the Ordovician dolostone that is Lower Paleozoic reservoir of natural gas in the Ordos Basin,the relationship between its genetic type and carbon and oxygen isotope is studied.Carbon and oxygen isotope of penecontemporaneous dolostone is heavy,whose δ¹³C value varies from 0.639‰ to -2.2‰ and δ¹⁸O value does from -0.2‰ to -8.668‰.The penecontemporaneous dolomite rock forms in saline water body.δ¹³C value of diagenetic dolostone varies from 0.9‰ to -3.2‰ and δ¹⁸O does from -1.7‰ to -7.067‰.The diagenetic dolostone froms in high-magnesian saline water body.Carbon and oxygen isotope of immerged dolostone is light,whose δ¹³C value varies from 0.580‰ to -3.7‰ and δ¹⁸O value does from -6.88‰ to -9.97‰.The formation surrounding of immerged dolostone is higher temperature,lower salinity and lower-magnesium.δ¹³C value of carbonate vein in dolostone most is from -1.00‰ to -5.66‰,while that in limestone most is from -1.30‰ to -8.65‰.Oxygen isotope of carbonate vein is lighter with narrow ranges,whose value varies from -10.66‰ to -18.91‰,and its Z value most is 100 and 110.Those indicate there was fresh-water leaching during formation of carbonate vein.
- carbon and oxygen isotope /
- dolostone /
- Ordovician /
- the Ordos Basin

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参考文献(17)

[1]	赵林,夏新,戴金星等.鄂尔多斯盆地上古生界天然气富集的主要控制因素[J].石油实验地质,2000,22(2):136～139
[2]	方国庆,刘德良.鄂尔多斯盆地中部东西向天然气聚集区带研究[J].石油实验地质,2000,22(2):146～151
[3]	张福礼.多旋回与鄂尔多斯盆地石油天然气[J].石油实验地质,2004,26(2):138～142
[4]	席胜利,刘新社,王涛.鄂尔多斯盆地中生界石油运移特征分析[J].石油实验地质,2004,26(3):229～235
[5]	董福湘,刘立,马艳萍.大港滩海地区沙一段下部砂岩储层中方解石胶结物碳、氧同位素研究[J].石油实验地质,2004,26(6):590～593
[6]	张永生.鄂尔多斯地区奥陶系马家沟群中部块状白云岩的深埋藏白云石化机制[J].沉积学报,2000,18(3):424～430
[7]	周劲松,赵澄林,刘明梅.陕甘宁盆地中部马五段上部成岩层序地层学研究及其意义[J].岩石矿物学杂志,2000,19(2),113～120
[8]	李安仁,张锦泉,郑荣才.鄂尔多斯盆地下奥陶统白云岩成因类型及其地球化学特征[J].矿物岩石,1993,13(4),41～49
[9]	刘宝珺.沉积岩石学[M].北京:地质出版社,1980.211～219
[10]	郭建华,沈昭国,李建明.塔北东段下奥陶统白云石化作用[J].石油与天然气地质,1994,15(1):51～59
[11]	Morrow J W.白云化模式和古代白云岩[J].国外地质科技,1984,(6～7):1～13
[12]	Keith M L,Weber J N.Carbon and oxygen isotopic composition of selected limestone and fossils[J].Geochim et Cosmochim Acta,1964,28:1 787～1 816
[13]	张秀莲.碳酸盐岩中氧,碳稳定同位素与古盐度,古水温的关系[J].沉积学报,1985,3(4):17～29
[14]	赵孟为,Hans Ahrendt,Klaas Wemmer.K-Ar测年法在确定沉积岩成岩时代中的应用——以鄂尔多斯盆地为例[J].沉积学报,1996,14(3):11～22
[15]	刘德良,谈迎,孙先如等.鄂尔多斯古生界流体包裹体特征及其与油气演化关系[J].沉积学报,2002,20(4):695～704
[16]	陈锦石,陈文正.碳同位素地质学概论[M].北京:地质出版社,1983
[17]	王兴涛,张庆石,张吉等.青藏高原中生界白云岩特征研究及成因分析[J].沉积学报,2000,18(4):544～559