基于重力资料的马达加斯加岛及邻区盆地构造单元分布特征

doi:10.11720/wtyht.2020.0074

Abstract
Figure/Table
References
Related Citation (15)

Download: PDF (3554 KB) HTML (0 KB)
Export: BibTeX | EndNote (RIS)

Abstract

With offering the increasing opening exploration of oil and gas resources to the oversea exploration companies in Africa which remains in an early exploration stage, a good opportunity is provided for the companies in China. In this study, the gravity data of this research area were collected in order to study the tectonic characteristics of Malagasy Island, which has insufficient oil and gas geological data but abundant mineral resources. The faults and the boundaries of this basin were identified according to the response of the gravity anomaly to the sediments by the separation method of the minimum curvature, the vertical derivative of the normalized total horizontal derivative (NVDR-THDR) and the inversion of the depth of the curvature attribute, with Bouguer gravity anomaly. The geological and geophysical characteristics of the main faults were analyzed, and the distribution characteristics of faults and basins were determined, which were based on the geological and geophysical data. According to this research, there are 9 primary faults and 11 secondary faults inferred in this study area trending NNE, NE and nearly NS. The tectonics of Tamatave Basin, Morondava Basin and Majunga Basin were re-divided into 7 depressions and 3 uplifts combined with the distribution of faults from this study and previous studies, which are shown as a zonal distribution like "two depressions with one uplift". This research can provide geophysical information for exploration of oil, gas and mineral resources in Madagascar and its adjacent regions.

Key words： Madagascar gravity anomaly fracture distribution tectonic units

Received: 18 February 2020 Published: 28 August 2020

P631

Corresponding Authors: Wan-Yin WANG E-mail: wxf20129@163.com;wwy7902@chd.rdu.cn

	Service

	E-mail this article
	Add to my bookshelf
	Add to citation manager
	E-mail Alert
	RSS
	Articles by authors
	Xue-Fa WANG
	Wan-Yin WANG
	Jie MA
	Min YANG
	Jian-She LIANG
	Chun-Guang QIU
	Ding-Ding WANG
	Xiao-Lin JI
	Jin-Lan LIU

Cite this article:

Xue-Fa WANG,Wan-Yin WANG,Jie MA, et al. A study of the distribution characteristics of basin tectonic units based on gravity data in Madagascar and its adjacent basins[J]. Geophysical and Geochemical Exploration, 2020, 44(4): 928-937.

URL:

https://www.wutanyuhuatan.com/EN/10.11720/wtyht.2020.0074 OR https://www.wutanyuhuatan.com/EN/Y2020/V44/I4/928

14]
">

Geological map of study area^[14]

1,2,3]
">

Distribution map of study area fault and basin^[1,2,3]

Topography map of Madagascar

Satellite altimetry gravity anomaly map of Madagascar

Bouguer gravity anomaly map of Madagascar

The plane location distribution of faults (a) and their apparent depth (b) in the Madagascar and its adjacent area

The rose diagram of faults’strikes (a)and histogram of frequency distribution of faults’length(b) in the Madagascar

Determined faults and the results of previous studies

Faults and NVDR-THDR of Bouguer gravity anomaly

Faults and Bouguer gravity anomaly

The statistical table of attributes of first-class fault

Determined boundaries of basinand the results of previous studies

Sediments of regional gravity anomaly map in Madagascar

Sediments of residual gravity anomaly map in Madagascar

Thickness of sedimentary mapof Madagascar

Tectonic division map of Madagascar

[1]	温志新, 王兆明, 宋成鹏, 等. 东非被动大陆边缘盆地结构构造差异与油气勘探[J]. 石油勘探与开发, 2015,42(5):671-680.
[1]	Wen Z X, Wang Z M, Song C P, et al. Structural architecture difference and petroleum exploration of passive continental margin basins in East Africa[J]. Petroleum Exploration and Development, 2015,42(5):671-680.
[2]	IHS. International energy oil & gas industry solutioSN[DB/OL]. [2018-12-30]. http://www.ihs.com/industry/oil-gas/international .aspx.
[3]	Selley R C, Van Der Spuy D. The oil and gas basin of Africa[J]. IUGS, 2016,39(2):429-445.
[4]	黄国平, 胡清乐, 陈冬明, 等. 马达加斯加地质矿产概况[J]. 资源环境与工程, 2014,28(5):626-632.
[4]	Huang G P, Hu Q L, Chen D M, et al. Overview of Madagascar geology and minerals[J]. Resources Environment & Engineering, 2014,28(5):626-632.
[5]	许志刚, 韩文明, 孙玉梅. 东非大陆边缘构造演化过程与油气勘探潜力[J]. 中国地质, 2014,41(3):961-969.
[5]	Xu Z G, Han W M, Sun Y M. Tectonic evolution and petroleum exploration prospect of East Africa[J]. Geology in China, 2014,41(3):961-969.
[6]	张光亚, 刘小兵, 温志新, 等. 东非被动大陆边缘盆地构造—沉积特征及其对大气田富集的控制作业[J]. 中国石油勘探, 2015,20(4):71-80.
[6]	Zhang G Y, Liu X B, Wen Z X, et al. Structural and sedimentary characteristics of passive continental margin basins in east Africa and their effect on the formation of giant gas fields[J]. China Petroleum Exploration, 2015,20(4):71-80.
[7]	张光亚, 刘小兵, 赵健, 等. 东非被动大陆边缘盆地演化及大气田形成主控因素:以鲁伍马盆地为例[J]. 地学前缘, 2018,25(2):24-32.
[7]	Zhang G Y, Liu X B, Zhao J, et al. Passive continental margin basin evolution of East Africa and the main controlling factors of giant gas fields: an example from the Rovuma Basin[J]. Earth Science Frontiers, 2018,25(2):24-32.
[8]	于璇, 侯贵廷, 代双河, 等. 东非大陆边缘构造演化与油气成藏模式探析[J]. 地质科技情报, 2015,34(6):147-158.
[8]	Yu X, Hou G T, Dai S H, et al. Tectonic evolution and hydrocarbonpooling patterns analysis in East Africa continental margin[J]. Geological Science and Technology Information, 2015,34(6):147-154.
[9]	Phethean J J J, Kalnins L M, Hunen J V, et al. Madagascar's escape from Africa: A high-resolution plate reconstruction for the Western Somali Basin and implications for supercontinent dispersal[J]. Geochemistry, Geophysics, Geosystems, 2016,17(12):5036-5055.
[10]	Collins A S, Windley B F. The tectonic evolution of central and northern Madagascar and its place in the final assembly of Gondwana Madagascar: lts place in the Last African Orogen[J]. Journal of Geology, 2002,110(3):325-340.
[11]	Collins A S, Kroner A, Fitzsimons I C W, et al. Structure of the eastern margin of the East African Orogen in central Madagascar[J]. Precambrian Research, 2003,123(2):111-133.
[12]	Schandelmeier H, Bremer F, Holl H G. Kinematic evolution of the Morondava rift basin of SW Madagascar-from wrench tectonics to normal extension[J]. Journal of African Earth Sciences, 2003,38(4):321-330.
[13]	刘田, 王志敏, 丁媛媛. 马达加斯加前寒武纪地质构造单元划分[J]. 科技创新导报, 2011(6):254.
[13]	Liu T, Wang Z M, Ding Y Y. Precambrian geology tectonic units of Madagascar[J]. Science and Technology Innovation Herald, 2011(6):254.
[14]	杨明建, 狄永军, 张达, 等. 马达加斯加Antanisoa石墨矿床成因分析[J]. 矿床地质, 2020,39(2):381-396.
[14]	Yang M J, Di Y J, Zhang D, et al. Genetic analysis of Antanisoa graphite deposit in Madagascar[J]. Mineral Deposits, 2020,39(2):381-396.
[15]	Windley B F, Razafiniparany A, Razakamanana T, et al. Tectonic framework of the Precambrian of Madagascar and its Gondwana connections: a review and reappraisal[J]. Geologische Rundschau, 1994,83(3):642-659.
[16]	李俊锋, 李金虎, 朱玉婷. 马达加斯加铬铁矿分布特征及成因简析[J]. 西部资源, 2016(4):1-2.
[16]	Li J F, Li J H, Zhu Y T. Distribution feature and formation of chromium deposit in the Madagascar[J]. Westem Resources, 2016(4):1-2.
[17]	车继英, 赵院冬, 王奎良, 等. 马达加斯加前寒武纪变质基底特征综述[J]. 地质与资源, 2013,22(4):340-346.
[17]	Che J Y, Zhao Y D, Wang K L, et al. Overview of the Precambrian geology of Madagascar[J]. Geology and Resources, 2013,22(4):340-346.
[18]	马君, 刘剑平, 潘校华, 等. 东非大陆边缘地质特征及油气勘探前景[J]. 世界地质, 2008,27(4):400-405.
[18]	Ma J, Liu J P, Pan X H, et al. Geological characteristics and prospect on hydrocarbon exploration in east Africa continental margin[J]. Global Geology, 2008,27(4):400-405.
[19]	金宠, 陈安清, 楼章华, 等. 东非构造演化与油气成藏规律初探[J]. 吉林大学学报:地球科学版, 2012,42(s2):121-130.
[19]	Jin C, Chen A Q, Lou Z H, et al. Tectonic evolution and hydrocarbon accumulation principle in east Africa[J]. Journal of Jilin University: Earth Science Edition, 2012,42(s2):121-130.
[20]	Geiger M, Schweigert G. Toarcian-Kimmeridgian depositional cycles of the south-western Morondava Basin along the rifted continental margin of Madagascar[J]. Facies, 2006,52(1):85-112.
[21]	何文祥, 江凯禧, 万欢, 等. 东非Morondava盆地Tsimiroro稠油油田成藏特征[J]. 地质科技情报, 2017,36(5):60-68.
[21]	He W X, Jiang K X, Wan H, et al. Heavy oil accumulation characteristic of the Tsimiroro oilfield in Morondava Basin, Easter Africa[J]. Geological Science and Technology Information, 2017,36(5):60-68.
[22]	Tamannai M S, Winstone D, Deighton I. An evaluation of the petroleum system-offshore Morondava basin, Madagascar, based on 2D seismic data interpretation[C]// European Association of Geoscientists & Engineers.70th EAGE Conference & Exhibition, 2009:1-5.
[23]	王万银, 潘作枢. 双界面模型重力场快速正反演问题[J]. 石油物探, 1993,32(2):81-87, 123.
[23]	Wang W Y, Pan Z S. Fast solution of forward and inverse problem for gravity field in a dual interface model[J]. Geophysical Prospecting for Petroleum, 1993,38(2):81-87, 123.
[24]	王万银, 任飞龙, 王云鹏, 等. 重力勘探在沉积型铝土矿床调查中的应用研究[J]. 物探与化探, 2014,38(3):409-416.
[24]	Wang W Y, Ren F L, Wang Y P, et al. The application research on the gravity exploration in sedimentary bauxite deposit survey[J]. Geophysical and Geochemical Exploration, 2014,38(3):409-416.
[25]	Wang W Y, Pan Y, Qiu Z Y. A new edge recognition technology based on the normalized vertical derivative of the total horizontal derivative for potential data[J]. Applied Geophysics, 2009,6(3):226-233
[26]	刘金兰. 重磁位场新技术与山西断陷盆地构造识别划分研究[D]. 西安:长安大学, 2008.
[26]	Liu J L. Development new technologies for potential field processing and research on the tectonic recognition &. division of Shanxi fault basin[D]. Xi’an:Chang'an University, 2008.
[27]	纪晓琳, 王万银, 邱之云. 最小曲率位场分离方法研究[J]. 地球物理学报, 2015,58(3):1042-1058.
[27]	Ji X L, Wang W Y, Qiu Z Y. The research to the minimum curvature technique for potential field data separation[J]. Chinese Journal of Geophysics, 2015,58(3):1042-1058.
[28]	纪晓琳, 王万银, 邱之云. 最小曲率位场分离方法参数选择试验研究[J]. 地球物理学进展, 2019,34(4):1441-1452.
[28]	Ji X L, Wang W Y, Qiu Z Y. Parameter choose experimental research to the minimum curvature technique potential field data separation method[J]. Progress in Geophysics, 2019,34(4):1441-1452.