广西百色盆地构造-热演化初步研究

廖宗廷; 江兴歌; 李冉; 陈跃昆

doi:10.11781/sysydz200501018

广西百色盆地构造-热演化初步研究

doi: 10.11781/sysydz200501018

1.
同济大学, 海洋与地球科学学院, 上海, 200092
2. 中国石化, 石油勘探开发研究院, 无锡实验地质研究所, 江苏, 无锡, 214151

基金项目: 国家科研院所社会公益研究专题资金项目(163);中国石化科技项目(P01025)。

详细信息

作者简介:
廖宗廷(1962- ),男(汉族),贵州遵义人,教授,主要从事盆地分析研究工作.

中图分类号: TE121.1
计量
- 文章访问数: 804
- HTML全文浏览量: 58
- PDF下载量: 516
- 被引次数: 0
出版历程
- 收稿日期: 2004-10-10
- 修回日期: 2004-11-27
- 刊出日期: 2005-01-25

RESEARCH ON THE TECTONO-THERMAL EVOLUTION OF THE BAISE BASIN, GUANGXI PROVINCE

1.
School of Ocean and Earth Sciences, Tongji University, Shanghai 200092, China
2. Wuxi Research Institute of Experiment Petroleum Geology, SINOPEC, Wuxi, Jiangsu 214151, China

摘要

摘要: 百色盆地是一个典型的第三纪走滑拉分盆地,印度板块与欧亚板块碰撞造山造成右江断裂带先左行(距今20~50 Ma)后右行(距今20 Ma以来)是盆地形成较确定的构造背景。盆地分田东、头塘和莲塘3个坳陷,那笔和那葛2个隆起。坳陷形成于NW向左行左阶排列断列的重叠、错列处,而隆起形成于NW向左行右阶排裂断裂的重叠、错列处。其构造演化分为六吜—洞均前拉盆期、那读—建都岭拉分期和建都岭末—第四系后拉分期3个主要构造阶段,每个阶段具有明显不同的特征。通过盆地有机质镜质体反射率、磷灰石裂变径迹和流体包裹体综合研究表明,百色盆地的热演化程度总体较低。仅那读组生油岩达到低熟,极少数为成熟,其它生油岩层未成熟。盆地热演化总的规律是:从距今大约55 Ma开始,古地温随着坳陷沉降和沉积而逐步增加,并于距今大约25~35 Ma达到最大值。然后随着地壳缓慢抬升,地层温度逐渐变冷。热演化程度低是控制百色盆地油气远景较差的主要原因。
- 构造演化 /
- 热演化 /
- 百色盆地 /
- 广西
Abstract: Baise basin is a typical strike-slip and pull-apart basin that was formed in the Tertiary Period. It is the tectonic background and main reason why the Baise Basin was formed. The collision of the India Plate and the Eurasian Plate made the Youjiang fracture belt left-handed strike slip(20-50 Ma ago) first, then right-handed strike slip (20 Ma till now). The basin includes three depressions (the Tiandong Depression, the Toutang Depression and the Liantang Depression) and two uplifts (the Nabi Uplift and the Nage Uplift). The three depressions were formed in the places where the left stage stagger NW fractures turning left overlapped and arrayed, and the two uplifts were formed in the places where the left stage stagger NW fractures turning left overlapped and arrayed. The three main periods of tectonic evolution includes the Liuniu-Dongjun pull-apart period, the Nadu-jianduling pull-apart period, and the Late Jiandu-ling-Quaternary epi-pull-apart period. Each period had its own apparently different characteristics. Although the scale of the basin is small, there are better oil source rocks and the conditions of reservoirs and cover rocks. The main problem about influencing oil-gas formation is that the degree of thermal evolution is lower. The thermal evolution of the Baise Basin was modelled based on vitrinite reflectance R_o, apatite fission tracks and fluid inclusions. The modelling results showed that the gradient of thermal evolution was lower. the Nadu Formation is the only oil-generating strata with low maturity. The oil-generating strata of the rest formations are not mature. The basic characteristics of thermal evolution in the basin were that paleotemperature increased with the subsidence and sedimentation of the Tiandong Depression from 55 Ma ago first, and achieved the highest during 25-30Ma ago, then decreased gradually with the slow lifting of the crust. The low thermal evolution of the basin is one of the most important factors resulting in poor prospective oil-gas.
- tectonic evolution /
- thermal evolution /
- the Baise Basin /
- Guangxi province

HTML全文

参考文献(23)

[1]	钟铿,潘其云. 广西石油天然气矿产发展史[J]. 广西地质,1997,10(4):63～69
[2]	李载沃. 广西百色盆地构造特征与控油机制[J]. 广西石油地质与勘探,1983,13(1):1～7
[3]	李载沃. 广西第三系盆地的形成机制和演化特征[J]. 广西油气,2001,4(1):5～10
[4]	李云祥. 百色盆地构造特征和勘探目标选择探讨[J]. 广西石油地质与勘探,1995,33(1):41～45
[5]	蔡勋育. 百色盆地构造样式及二级构造带模式[J]. 广西油气,1999,2(1):6～10
[6]	阙慧娟. 百色盆地下第三系烃源岩有机地化特征[J]. 广西石油地质与勘探,1989,(2):42～57
[7]	朱夏. 中国东部板块内部盆地形成机制的初步探讨[J],石油实验地质,1979,1(1),1～8
[8]	Tapponnier P, Molnar P. Slip-line field theory and large scale continental tectonics[J]. Nature, 1976,264:319～324
[9]	Tapponnier P, Peltzer G, Le Dain A Y, et al. Propagating extrusion tectonics in Asia: new sights form simple experiment with plasticine[J], Geology, 1982,(10):611～616
[10]	Tapponnier P, Peltzer G, Armijo R. 印度板块与亚洲大陆之间的碰撞机制[A]. 碰撞构造[M]. 北京:地质出版社,1990. 46～68
[11]	李海兵,Tapponnier P.阿尔金走滑盆地的确定及其与山脉的关系[J],科学通报,2002,47(1):63～67
[12]	Golke M, Cloetingh S. Finite-element modeling of pull-apart basin formation[J]. Tectonophysics, 1994, 240(1-4):45～57
[13]	Basile C, Brun J P. Transtensional faulting pattern ranging from pull-apart basins to transform continental margins: an experimental investigation[J]. Journal of Structure Geology, 1999, 21(1): 23～37
[14]	Roberts D. Pull-apart stepover structure in an asphalted road surface-a geological curiosity[J]. Journal of Structure Geology, 2000, 22(10): 1 469～1 472
[15]	McClay K, Dooley T. Analogue models of pull-apart basins[J]. Geology, 1995, 23: 711～714
[16]	Emmons R C. Strike-slip rupture pattern in sand models[J]. Tectonophysics, 1969, 7:71～87
[17]	Mann P. Hempton M R. Development of pull-apart basins[J]. Journal of Geology, 1983,91: 529～554
[18]	Dooley T, McClay K. Analog modeling of pull-apart basins[J].AAPG, 1997, 81:1 804～1 826
[19]	Sweeney J J, Burnham A K. Evolution of a simple model of vitrinite reflectance on chemical kinetics[J]. AAPG, 1990, 74:1 559～1 571
[20]	Galbridge R F.The rodio plot: graphical assessment of spread in ages[J]. Nucl Tracks Radiat Meas, 1991,17:197～206
[21]	Hurford A J. Standardization of fission track dating calibration: recommendation by the Fission Track Working Group of the IUGS Subcommission on Geochronolog[J]. Chem Geol, 1990,80:171～178
[22]	Lutz T M, Omar G. Inverse methods of modeling thermal histories from apatite fission track data[J]. Earth Planet Sci Lett, 1991, 104:181～195
[23]	周祖翼,廖宗廷,杨凤丽等.裂变径迹分析及其在沉积盆地研究中的应用[J].石油实验地质,2001,23(3):332～337