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1.
ENG Mohammed Al Zubairi 《东北亚地学研究》2001,(2)
1 ＩｎｔｒｏｄｕｃｔｉｏｎＴｈｅＲｅｄＳｅａｉｓａｎａｒｒｏｗｉｎｌａｎｄｓｅａ ,ｓｅｐａｒａｔｉｎｇｔｈｅＡｒａｂｉａｎＰｅｎｉｎｓｕｌａ,ＷＡｓｉａ,ｆｒｏｍＮＥＡｆｒｉｃａ .ＩｔｅｘｔｅｎｄｓＮＷｆｒｏｍｔｈｅｓｔｒａｉｔｏｆＢａｂＡｌＭａｎｄａｂ ( 相似文献
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鄂尔多斯盆地南缘中元古代处于拉张期,发育多裂谷系.分析鄂尔多斯盆地野外地质调查、物探和钻井等资料,划分沉积相剖面,研究沉积演化及相类型.结果表明:盆地南缘中元古代沉积陆相三角洲至海陆过渡相的长城系与滨浅海至深海盆地相的蓟县系,并于蓟县系中发现液化底劈构造、震褶岩、震裂岩、震浊积岩、津浪丘状层和风暴岩等震积岩序列单元;沉积水体逐渐加深,为裂谷非补偿型沉积,蓟县系中存在震积岩序列,反映该区中元古代盆地南缘处于裂谷带内,受裂陷作用持续影响.通过沉积相及震积岩序列划分耦合裂谷说,为区域构造研究提供佐证. 相似文献
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珠江口盆地白云东区是白云凹陷2个有利成藏区之一,目前勘探正面临转向古近系深层的阶段,急需重新认识深层洼陷结构构造。为了解决珠江口盆地白云东区古近系深层缓坡带砂岩变少,与伸展型半地堑储层发育模式矛盾的问题,利用改善深层成像的重处理三维深度域地震资料及钻井数据进行综合解释,开展了白云东区古近系及基底之下滑脱面全三维构造解析。研究结果表明：按动力学机制对盆地演化阶段进行了重新划分,构造层序由一个被动裂陷旋回,修改为被动裂陷-主动裂陷-被动裂陷3个旋回;构造幕由3分细化为6个幕次,即由断陷幕-断坳转换幕-坳陷幕细化为裂陷两幕-褶皱两幕-裂陷萎缩幕-漂移幕,细分方案更好地反映了地层变形规律。地层变形方式表现为基底呈东西向挤压构造,盖层为南北向伸展构造。伸展构造发育过程中,主动裂陷旋回参与的基底盖层脱耦变形的新模式协调了白云东区古近纪构造-沉积响应,补充了主动裂陷阶段盆地充填富泥旋回的认识,挤压-伸展同步变形模式丰富了南海盆地空间演化模式,支持了白云凹陷深层新领域的勘探。 相似文献
4.
鄂尔多斯盆地北部中新生代构造特征及其演化 总被引：8，自引：0，他引：8
根据地震、地质等资料,结合野外地质及前人研究成果,对鄂尔多斯盆地北部中生代晚期以来后期改造特征进行了研究。结果表明,盆地周缘和内部在中新生代都受到后期改造作用,周缘存在挤压逆冲推覆和拉张断陷等不同性质的构造改造作用。在盆地北部,盖层中的构造受到了基底断裂的控制,正断层、逆断层和由基底断裂控制的挠曲构造等有规律发育,根据构造的发育特点将盆地北部分为东胜、三眼井、准格尔旗、鄂托克旗、乌审旗—榆林和定边—绥德构造区。自侏罗纪以来,盆地经历了萎缩消亡和周缘逆冲构造带的形成、挤压隆升剥蚀和拉张隆升剥蚀3大构造演化阶段,现今构造是中新生代多期构造作用的结果。 相似文献
5.
通过对胶北臧家庄盆地中生代火山岩系的构造位置、产出状态、岩石特征、地球化学特征、相序列组合及同位素年龄等资料的综合分析,结合区域构造特征,认为其属中国东部中生代火山岩带之桃村—莱阳火山 沉积盆地构造组成部分;岩石类型为玄武岩、安山岩、英安岩及流纹岩等,属钙碱性系列,按相序列可划分为安山质岩系、英安质岩系及凝灰质粘土岩三个相组;构成两个火山旋回。 相似文献
6.
The pre-Eocene history of the region around the present South China Sea is not well known. New multi-channel seismic profiles provide valuable insights into the probable Mesozoic history of this region. Detailed structural and stratigraphic interpretations of the multi-channel seismic profiles, calibrated with relevant drilling and dredging data, show major Mesozoic structural features. A structural restoration was done to remove the Cenozoic tectonic influence and calculate the Mesozoic tectonic compression ratios. The results indicate that two groups of compressive stress with diametrically opposite orientations, S(S)E– N(N)W and N(N)W–S(S)E, were active during the Mesozoic. The compression ratio values gradually decrease from north to south and from west to east in each stress orientation. The phenomena may be related to the opening of the proto-South China Sea(then located in south of the Nansha block) and the rate at which the Nansha block drifted northward in the late Jurassic to late Cretaceous. The Nansha block drifted northward until it collided and sutured with the southern China margin. The opening of the present South China Sea may be related to this suture zone, which was a tectonic zone of weakness. 相似文献
7.
Yong Yuan Jianwen Chen Yuxi Zhang Jie Liang Yinguo Zhang Penghui Zhang 《中国海洋大学学报(英文版)》2018,17(5):1075-1090
The South Yellow Sea Basin is the main body of the lower Yangtze area in which marine Mesozoic–Paleozoic strata are widely distributed.The latest geophysical data were used to overcome the limitation of previous poor-quality deep data.Meanwhile,the geological characteristics of hydrocarbon reservoirs in the marine Mesozoic–Paleozoic strata in the South Yellow Sea Basin were analyzed by comparing the source rocks and the reservoir and utilizing drilling and outcrop data.It is believed that the South Yellow Sea Basin roughly underwent six evolutionary stages:plate spreading,plate convergence,stable platform development,foreland basin development,faulted basin development,and depression basin development.The South Yellow Sea Basin has characteristics of a composite platform-fault depression geological structure,with a half-graben geological structure and with a ‘sandwich structure' in the vertical direction.Four sets of hydrocarbon source rocks developed – the upper Permian Longtan–Dalong formation,the lower Permian Qixia formation,the lower Silurian Gaojiabian formation,and the lower Cambrian Hetang formation/Mufushan formation,giving the South Yellow Sea Basin relatively good hydrocarbon potential.The carbonate is the main reservoir rock type in the South Yellow Sea area,and there are four carbonate reservoir types:porous dolomitic,reef-bank,weathered crust,and fractured.There are reservoir-forming horizons similar to the typical hydrocarbon reservoirs in the Yangtze land area developed in the South Yellow Sea,and there are three sets of complete source-reservoir-cap rock assemblages developed in the marine strata,with very good hydrocarbon potential. 相似文献
8.
Sedimentary basins in the Yellow Sea can be grouped tectonically into the North Yellow Sea Basin (NYSB), the northern basin of the South Yellow Sea (SYSNB) and the southern basin of the South Yellow Sea (SYSSB). The NYSB is connected to Anju Basin to the east. The SYSSB extends to Subei Basin to the west. The acoustic basement of basins in the North Yellow Sea and South Yellow Sea is disparate, having different stratigraphic evolution and oil accumulation features, even though they have been under the same stress regime since the Late Triassic. The acoustic basement of the NYSB features China-Korea Platform crystalline rocks, whereas those in the SYSNB and SYSSB are of the Paleozoic Yangtze Platform sedimentary layers or metamorphic rocks. Since the Late Mesozoic terrestrial strata in the eastern of the NYSB (West Korea Bay Basin) were discovered having industrial hydrocarbon accumulation, the oil potential in the Mesozoic strata in the west depression of the basin could be promising, although the petroleum exploration in the South Yellow Sea has made no break-through yet. New deep reflection data and several drilling wells have indicated the source rock of the Mesozoic in the basins of South Yellow Sea, and the Paleozoic platform marine facies in the SYSSB and Central Rise could be the other hosts of oil or natural gas. The Mesozoic hydrocarbon could be found in the Mesozoic of the foredeep basin in the SYSNB that bears potential hydrocarbon in thick Cretaceous strata, and so does the SYSSB where the same petroleum system exists to that of oil-bearing Subei Basin. 相似文献
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近年来,东非海上不断有大型天然气田发现,已成为国际能源勘探的新兴热点。东非地区蕴藏着巨大的油气资源潜力,但其勘探和研究程度很低。在调研大量区域地质和油气地质资料的基础上,通过对东非大陆边缘构造演化特征的分析,从油气成藏要素(烃源岩、储盖组合以及圈闭类型)入手,探讨了油气成藏模式,并对其勘探前景和方向进行了分析。研究结果表明,东非大陆边缘经历了4期构造演化,形成了裂谷叠加被动大陆边缘的双层系盆地结构;主力烃源岩形成于卡鲁裂谷期,主力储层形成于被动陆缘期,在大型三角洲发育区,油气保存条件最好,以构造和构造-地层圈闭为主;油气成藏模式受到构造演化的阶段性、构造变形的横向分带性以及成藏要素的配置关系所控制。 相似文献
12.
辽河断陷的中元古代构造演化与华北北缘和郯庐断裂带的构造演化密切相关。大红峪期,华北北缘在大陆裂谷的基础上进一步发展成被动大陆边缘,郯庐断裂带随之响应发生张裂接受沉积。之后海平面升降,辽宁境内表现为杨庄上升和凌源上升,其不整合面均为沉积属性,在这期间,郯庐断裂带与华北北缘一致保持着裂解趋势。由兴城上升至芹峪上升,辽河断陷沉积了大红峪组、高于庄组、杨庄组和雾迷山组,洪水庄组和铁岭组尚待确定。芹峪上升表示华北北缘开始由被动大陆边缘转换成主动大陆边缘,洋壳低角度俯冲使华北北缘挤压抬升并迫使华北克拉通向南挤压,NE向郯庐断裂由张裂转换成挤压滑动,辽河断陷抬升遭受剥蚀。辽河断陷内的杨庄组和雾迷山组可能就在这一时期剥蚀殆尽。随后洋壳高角度俯冲,华北北缘形成弧后盆地,辽河断陷与燕山地区一样沉积下马岭组。蔚县上升为华北北缘陆陆碰撞造成,陆陆碰撞使华北北缘再次抬升,郯庐断裂挤压走滑增强,辽河断陷褶皱抬升,下马岭组遭受剥蚀。直到罗迪尼亚大陆开始裂解,郯庐断裂带再次张裂,辽河断陷沉积长龙山组和景儿峪组。 相似文献
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作为威尔逊旋回萌芽阶段的典型陆内裂谷,东非裂谷是研究板块构造运动学和动力学的天然场所。新生代东非裂谷东支Turkana坳陷受前寒武系基底先存构造及中生代裂谷活动的影响,分析其演化及动力学机制,对进一步深入认识大陆裂谷演化过程具有重要的意义。基于低温热年代学、钻井及野外露头资料,结合地震资料解释和断层活动性分析,重新厘定了Turkana坳陷新生代裂谷演化时序,将新生代裂谷演化过程分为4个阶段,裂谷演化具有"南早北晚,先宽后窄,向东迁移"的特点。通过探讨裂谷发育的成因模式,认为新生代裂谷演化整体上受控于先存构造和地幔柱的联合作用,地幔活动迁移影响着火山及裂谷活动的迁移,并导致了裂谷发育模式和动力学机制的变化。 相似文献
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As one of the biggest marginal seas in the western Pacific margin, the South China Sea (SCS) experienced continental rifting and seafloor spreading during the Cenozoic. The northern continental margin of the SCS is classified as a passive continental margin. However, its depositional and structural evolution remains controversial, especially in the deep slope area. The lack of data hindered the correlation between continental shelf and oceanic basin, and prevented the establishment of sequence stratigraphic frame of the whole margin. The slope basins in the mid-northern margin of SCS developed in the Cenozoic; the sediments and basin infill recorded the geological history of the continental margin and the SCS spreading. Using multi-channel seismic dataset acquired in three survey cruises during 1987 to 2004, combined with the data of ODP Leg 184 core and industrial wells, we carried out the sequence stratigraphic division and correlation of the Cenozoic in the middle-northern margin of SCS with seismic profiles and sedimentary facies. We interpreted the seismic reflection properties including continuity, amplitude, frequency, reflection terminals, and 15 sequence boundaries of the Cenozoic in the study area, and correlated the well data in geological age. The depositional environment changed from river and lake, shallow bay to open-deep sea, in correspondence to tectonic events of syn-rifting, early drifting, and late drifting stages of basin evolution. 相似文献
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Boli basin, between Yishu fracture belt and Dunmi fracture belt, is the biggest Mesozoic coal basin in the east of Heilongjiang Province. Now it is a fault - fold remnant basin. The basin' s shape is generally consistent with the whole distribution of the cover folds, an arc protruding southwards. The basement of the basin can be divided into three fault blocks or structural units. The formation and evoluation of the basin in Mesozoic was determined by the basement fault blocks' displacement features rusulted from by the movement of the edge faults and the main basement faults. 相似文献
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There are eighty sedimentary basins in five different types in African continent, i. e. craton sag basin, foreland basin, intermountain basin, passive margin basin and rift basin, which underwent the stress environment of stable depression-compression-extension. The first three types of basins had been intensely influenced by Hercynian and Alpine tectonic movement, while the later two types of basins always exist in a stable extension environment. Different basin evolution caused the obviously hydrocarbon distribution difference. In North Africa, marginal craton sag and rift basins show great expedition potential of hydrocarbon, marginal craton sag basins had good formation and preservation of Lower Silurian hot shale, tectonic-strata traps and migration pathway formed by Hercynian unconformity, and rift basins had excellent Upper Cretaceous marine source rocks and good hydrocarbon preservation with little tectonic activity. Meanwhile, in the salt-containing passive margin basins and delta basins of West Africa, thick strata containing high quality source rocks and plastic strata were well developed. Source rocks of high maturity, good hydrocarbon preservation, growth faults and deformational structure traps were formed by abundant overlying sediments and sources supplied from Tertiary large water system. 相似文献
17.
华北地块北缘金、多金属成矿地质背景 总被引：1，自引：0，他引：1
华北地块北缘是我国重要的金、多金属成矿带。根据区域地质建造特点、构造性质将研究区划分为５种成矿地质背景。不同的区域成矿地质背景有不同的成矿特点：变质基底区,主要形成沉积变质改造型ＣｕＦｅＡｕＰｂＺｎ成矿系列;盖层区,主要在中晚元古代沉降区形成ＰｂＺｎ（Ａｇ）沉积成矿系列、ＰｂＺｎ（ＡｇＡｕ）沉积改造成矿系列;地槽区,主要形成中酸性岩浆热液多金属成矿系列,火山－次火山热液金、多金属成矿系列,基性－超基性岩浆ＣｕＮｉ成矿系列;中生代火山断陷盆地,主要形成中酸性火山－次火山金、多金属成矿系列;构造岩浆活动带则广泛形成中酸性岩浆热液金、多金属成矿系列。 相似文献
18.
海塔盆地中部断陷带反转构造特征及其对油气的控制 总被引：2，自引：0，他引：2
为研究海塔盆地中部断陷带反转构造的类型、分布、形成机制、与油气藏的关系及成藏模式和控藏特征,分析地震、油气藏开发及地球化学等资料.结果表明:伊敏组晚期,海塔盆地中部断陷带在近东西向压扭应力场作用下发生大规模反转,形成断层型、褶皱型和混合型3类5个亚类反转构造,并与上部含油气系统的大二段次生油气藏具有良好耦合关系.大二段次生油气藏为反转期原生油气藏沿主干反转断裂向上调整形成,以南一中段及下段烃源岩形成的原生油气藏为源,以大二段砂岩为储层,以伊敏组泥岩为盖层,以主反转断层为疏导为成藏模式;该次生油气藏的形成与反转程度密切相关,主要形成于反转程度较弱的塔南凹陷隐伏断展型反转构造发育的区域,北北东向的隐伏断展型反转构造圈闭是寻找该类次生油气藏的首选目标. 相似文献
19.
伊犁地块可按昭苏-特克斯、婆罗科努南坡-尼勒克、婆罗科努北坡及博尔塔拉-伊林哈比尔尕等断裂,划分为三个构造单元,由南西向北东展布有:伊宁波疏带、婆罗科努波密带和温泉-赛里木波疏带,其构造演化过程是,温泉斯-赛里木、伊犁地块在元古代时期,镶嵌在塔里木地块的西北缘,后来,经历了寒武一中奥陶世早期边缘海盆演化.中奥陶世晚期,温泉-赛里木与伊犁地块裂陷.志留纪末,两地块镶嵌拼贴.晚古生代是断陷-拗陷活动时期.中石炭世是准噶尔地块西南缘伊林哈比尔尕波峰带与温泉-赛里木及婆罗科努构造带镶嵌的主要时期.研究区还划分出三个成矿区带. 相似文献
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In the Korean Peninsula the Meso-Cenozoic basins were mainly formed due to fault block and block movement. The Mesozoic fracture structures correspond basically to modem large rivers in direction. Such faults were usually developed to rift and formed lake-type tectonic basin, such as the Amrokgang-, Taedonggang-, Ryesonggang-, Hochongang-, Jangphari-, Susongchon-, Pujon-, and Nampho basins. The Mesozoic strata are considered to be divided into the Lower Jurassic Taedong System, Upper Jurassic Jasong System, Upper Jurassic-early Lower Cretaceous Taebo System, and the Upper Cretaceous-Paleocene （ Chonjaebong, Hongwon, Jaedok Series）. The Cenozoic block movement succeeded the Mesozoic fault block movement. The Kilju-Myongchon Graben and Tumangang Basin, etc, are the basins related to the fault zones developed from the Oligocene to Miocene. In addition, the Tertiary basins were formed in many areas in the Miocene （e. g. Sinhung, Oro, Hamhung, Yonghung, Anbyon, Cholwon, etc）. The Cenozoic sedimentation occurred mainly from the late Oligocene to Miocene. The Kilju-Myongchon Graben was the fore deep connected to the sea and the basins inclined in the Chugaryong Fault Zone are intramountain basins. Therefore, coal-beating beds and clastic rocks in the intramountain basins and rare marine strata and terrigenous clastic rocks are main sedimentary sequences in the Cenozoic. 相似文献