澳大利亚波拿巴盆地北部中新统硅质碎屑与碳酸盐混合沉积特征及控制因素
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摘要
波拿巴盆地油气资源十分丰富。新生界千余米的浅海碳酸盐岩背景下,中新统底部发育一套12~52 m硅质碎屑与碳酸盐混合沉积,其中硅质碎屑作为潜在的良好储集体,尚未引起足够重视。综合运用录井、测井及三维地震等资料,认为盆地北部研究区内该套混合沉积是由陆棚浅海台地生物滩、坝碳酸盐和三角洲平原和前缘硅质碎屑混合而成,以相在空间上的交叉占优势。该套混合沉积主要受到构造运动和相对海平面变化控制。在渐新世末期,盆地发生区域构造抬升,古隆起接受剥蚀,陆源碎屑进入台地,是形成这套混合沉积的先决条件,之后中新世初期构造相对稳定,相对海平面在短时间内的周期性变化控制陆源碎屑沉积范围和碳酸盐生产建造,进而控制混和沉积作用的类型。
The Bonaparte Basin is rich in oil and gas resources.There occur more than one thousand meters of Cenozoic shallow marine carbonate deposits.At the bottom of the Miocene,there is a mixed sequence of siliciclastic and carbonate sediments up to 12~52 m thick.The terrigenous siliciclastics in the mixed sequence,however,have not been carefully studied so far as a potential reservoir by researchers.Based on the logging and 3D seismic data,the authors found that the alternation of terrigenous siliciclastic delta facies and shelf-derived carbonate platform facies in space is commonly seen in the northern Bonaparte Basin.The deposition of the mixed sediments depends upon regional tectonics and relative sea level changes.In the late Oligocene,regional tectonic uplifting caused erosion of the source area.A great amount of terrigenous siliciclastics were brought into the basin which was dominated by the deposition of carbonate platforms.In the early stage of the Miocene,when the region was tectonically stabilized again,short-term relative sea level changes played significant roles in the formation of the mixed sediments through affecting the re-distribution of terrigenous and the production of carbonate sediments.
The Bonaparte Basin is rich in oil and gas resources.There occur more than one thousand meters of Cenozoic shallow marine carbonate deposits.At the bottom of the Miocene,there is a mixed sequence of siliciclastic and carbonate sediments up to 12~52 m thick.The terrigenous siliciclastics in the mixed sequence,however,have not been carefully studied so far as a potential reservoir by researchers.Based on the logging and 3D seismic data,the authors found that the alternation of terrigenous siliciclastic delta facies and shelf-derived carbonate platform facies in space is commonly seen in the northern Bonaparte Basin.The deposition of the mixed sediments depends upon regional tectonics and relative sea level changes.In the late Oligocene,regional tectonic uplifting caused erosion of the source area.A great amount of terrigenous siliciclastics were brought into the basin which was dominated by the deposition of carbonate platforms.In the early stage of the Miocene,when the region was tectonically stabilized again,short-term relative sea level changes played significant roles in the formation of the mixed sediments through affecting the re-distribution of terrigenous and the production of carbonate sediments.
引文
[1]董桂玉,陈洪德,何幼斌.陆源碎屑与碳酸盐混合沉积研究中的几点思考[J].地球科学进展.2007,22(9):931-939.
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[11]李祥辉,曾允孚.扬子西缘碳酸盐与陆源碎屑的混积层序和层序混积模式[J].沉积学报,1999,17(3):339-344.
[12]王国忠.南海北部大陆架现代礁源碳酸盐与陆源碎屑的混合沉积作用[J].古地理学报,2001,2(3):48-49.
[13]张雄华.雪峰古陆边缘上石炭统陆源碎屑和碳酸盐混合沉积[J].地层学杂志,2003,27(1):54-57.
[14]周川,王英民,黄志超.澳大利亚北波拿巴盆地北部地区中生界层序地层及地震相研究[J].海洋地质动态,2009,25(5):19-24.
[15]龚承林,王英民,崔刚.北波拿巴盆地构造演化与层序地层学[J].海洋地质与第四纪地质,2010,30(2):103-109.
[16]Gorter J D,Rexilius J P,Powell S L,et al.Late Early toMid Miocene patch reefs,Ashmore Platform,Ti mor Sea-Evidence from 2D and 3D seismic surveys and petroleumexploration wells[C]∥Perth:Petroleum Exploration So-ciety of Australia.The Sedi mentary Basins of WesternAustralia 3,2002:355-376.
[17]Santisteban G,Taberner C.Sedi mentary models of silici-clastic deposits and coral reef interrelation[C]∥Doyle LJ,Roberts H H,et al.Carbonate-clastic transitions,Am-sterdam:Elsevier,1988:35-76.
[18]Choi D R,Ginsburg R N.Siliciclastic foundations of Qua-ternary reef in the southernmost Belize Lagoon,BritishHonduras[J].Geological Society of America Bulletin,1982,92:116-126.
[19]Flood P G,Orme G R.Mixed siciliclastic/carbonate sedi-ments of the northern Great Barrier reef province,Australia[C]∥Doyle L J,Roberts H H,et al.Carbonate-clastictransitions,Amsterdam:Elsevier,1988:175-205.
[20]Pilkey O H,Bush D M,Rodriguez R M.Carbonate terrige-nous sedi mentation on the north Puerto Rico shelf[C]∥Doyle L J,Roberts H H,et al.Carbonate-clastic transi-tions,Amsterdam:Elsevier,1988:231-250.
[21]李祥辉,刘文均,郑荣才.龙门山地区泥盆纪碳酸盐与硅质碎屑的混积相与混积机理[J].岩相古地理,1997,17(3):1-10.
[22]Harrowfield M,Keep M.Tectonic modification of the Aus-tralian North-West Shelf:episodic rejuvenation of long-lived basin divisions[J].Basin Research,2005,17:225-239.
[23]Peter WB,Tom HF,Robert H,et al.Geological develop-ment of eastern Indonesia and the northern Australia colli-sion zone:Areview[R].2003.
[2]Mount J F.Mixing of siliciclastics and carbonate sedi mentsin shallowshelf environments[J].Geology,1984(12):432-435.
[3]沙庆安.混合沉积和混积岩的讨论[J].古地理学报,2001,3(3):63-66.
[4]张锦泉,叶红专.论碳酸盐与陆源碎屑的混合沉积[J].成都地质学院学报,1989,16(2):89-92.
[5]张锦泉,陈洪德,叶红专.碳酸盐与陆源碎屑的混合沉积[M]∥冯增昭.中国沉积学,北京:石油工业出版社,1994:623-631.
[6]Steven G,Driese R H,Dott J.Model for sandstone-carbon-ate cyclothems based on uppermember of Morgan Forma-tion(Middle Pennsylvanian)of Northern Utah and Colo-rado[J].AAPG Bulletin,1984,68:574-597.
[7]Dorsey RJ,Kidwell S M.Mixed carbonate-siliciclastic sedi-mentation on a tectonically active margin:Example fromthe Pliocene Baja California Sur,Mexico[J].Geology,1999,(10):935-938.
[8]Dolan J F.Eustatic and tectonic controls on deposition ofhybrid siliciclastics/carbonate basinal cycles:Discussionwith examples[J].AAPG Bulletin,1989,73(10):1 233-1 246.
[9]杨朝青,沙庆安.云南曲靖中泥盆统曲靖组的沉积环境:陆源碎屑和海相碳酸盐岩的混合沉积[J].沉积学报,1990,8(2):60-63.
[10]张廷山,兰光志,陈晓慧,等.川西北早志留世陆源碎屑—碳酸盐沉积缓坡[J].沉积学报,1995,13(4):27-35.
[11]李祥辉,曾允孚.扬子西缘碳酸盐与陆源碎屑的混积层序和层序混积模式[J].沉积学报,1999,17(3):339-344.
[12]王国忠.南海北部大陆架现代礁源碳酸盐与陆源碎屑的混合沉积作用[J].古地理学报,2001,2(3):48-49.
[13]张雄华.雪峰古陆边缘上石炭统陆源碎屑和碳酸盐混合沉积[J].地层学杂志,2003,27(1):54-57.
[14]周川,王英民,黄志超.澳大利亚北波拿巴盆地北部地区中生界层序地层及地震相研究[J].海洋地质动态,2009,25(5):19-24.
[15]龚承林,王英民,崔刚.北波拿巴盆地构造演化与层序地层学[J].海洋地质与第四纪地质,2010,30(2):103-109.
[16]Gorter J D,Rexilius J P,Powell S L,et al.Late Early toMid Miocene patch reefs,Ashmore Platform,Ti mor Sea-Evidence from 2D and 3D seismic surveys and petroleumexploration wells[C]∥Perth:Petroleum Exploration So-ciety of Australia.The Sedi mentary Basins of WesternAustralia 3,2002:355-376.
[17]Santisteban G,Taberner C.Sedi mentary models of silici-clastic deposits and coral reef interrelation[C]∥Doyle LJ,Roberts H H,et al.Carbonate-clastic transitions,Am-sterdam:Elsevier,1988:35-76.
[18]Choi D R,Ginsburg R N.Siliciclastic foundations of Qua-ternary reef in the southernmost Belize Lagoon,BritishHonduras[J].Geological Society of America Bulletin,1982,92:116-126.
[19]Flood P G,Orme G R.Mixed siciliclastic/carbonate sedi-ments of the northern Great Barrier reef province,Australia[C]∥Doyle L J,Roberts H H,et al.Carbonate-clastictransitions,Amsterdam:Elsevier,1988:175-205.
[20]Pilkey O H,Bush D M,Rodriguez R M.Carbonate terrige-nous sedi mentation on the north Puerto Rico shelf[C]∥Doyle L J,Roberts H H,et al.Carbonate-clastic transi-tions,Amsterdam:Elsevier,1988:231-250.
[21]李祥辉,刘文均,郑荣才.龙门山地区泥盆纪碳酸盐与硅质碎屑的混积相与混积机理[J].岩相古地理,1997,17(3):1-10.
[22]Harrowfield M,Keep M.Tectonic modification of the Aus-tralian North-West Shelf:episodic rejuvenation of long-lived basin divisions[J].Basin Research,2005,17:225-239.
[23]Peter WB,Tom HF,Robert H,et al.Geological develop-ment of eastern Indonesia and the northern Australia colli-sion zone:Areview[R].2003.
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