本文關(guān)鍵詞： 金湖凹陷 斷裂成因 構(gòu)造演化 斷裂系統(tǒng) 數(shù)值模擬　出處：《合肥工業(yè)大學(xué)》2017年碩士論文　論文類型：學(xué)位論文

【摘要】：蘇北盆地是楊子板塊上為數(shù)不多的幾個陸相含油氣盆地之一,金湖凹陷是該盆地內(nèi)最重要的油氣產(chǎn)區(qū)之一,其油氣成藏與盆地斷裂系統(tǒng)具有密不可分的關(guān)系,但該凹陷的斷裂構(gòu)造長期以來一直缺乏系統(tǒng)、深入的認(rèn)識。本文在區(qū)域動力學(xué)背景分析的基礎(chǔ)上,通過對典型剖面的構(gòu)造精細解釋、剖面和平面構(gòu)造樣式解析、斷層活動性及構(gòu)造演化分析,重點開展了成盆期的應(yīng)力場模擬、斷裂形成過程的數(shù)值模擬等研究,闡明了金湖凹陷內(nèi)斷裂系統(tǒng)的成因及演化歷史。金湖凹陷發(fā)育有楊村、銅城和石港三大斷裂系統(tǒng),這些斷裂系統(tǒng)在成盆前及成盆期經(jīng)歷了多期構(gòu)造演化階段。區(qū)域構(gòu)造分析及斷裂模擬結(jié)果表明,楊村斷層西段(汊澗斷層)、石港斷層與銅城斷層均為晚白堊世-古近紀(jì)成盆前的基底斷層復(fù)活的產(chǎn)物,其中石港斷層與汊澗斷層的前身為印支期蘇魯造山帶南緣前陸變形帶上的同一條前陸逆沖斷層,在晚白堊世-古近紀(jì)成盆期間發(fā)生斷層復(fù)活,由逆沖斷層轉(zhuǎn)變?yōu)榭嘏?控洼鏟形正斷層。銅城斷層的前身為晚侏羅世的左行平移斷層,平移期將汊澗斷層與石港斷層左行錯開,并在晚白堊世-古近紀(jì)成盆期間轉(zhuǎn)變?yōu)殂鉂緮鄬拥尼尫艛鄬�。楊村斷層的東段形成于晚白堊世-古近紀(jì)成盆期間,為汊澗斷層強烈拉張下的擴展斷層。一系列證據(jù)表明,金湖凹陷在晚白堊世-古近紀(jì)成盆期間處于近SN向的拉張應(yīng)力場中,在此區(qū)域應(yīng)力背景下,楊村、銅城與石港斷層的主干斷層旁側(cè)分別發(fā)育了特征性的羽狀斷層或雁列狀斷層,本文的數(shù)值模擬結(jié)果再現(xiàn)了這些次級斷層的形成過程與發(fā)育機制,對三大斷裂系統(tǒng)構(gòu)造樣式的成因給出了合理的解釋,詳細闡述了凹陷內(nèi)各方位斷裂的成因特征。金湖凹陷自晚白堊世以來經(jīng)歷了多期成盆與反轉(zhuǎn)事件,自下而上發(fā)育有三套構(gòu)造層,在剖面上形成了三套截然不同的構(gòu)造系統(tǒng),相應(yīng)地盆地經(jīng)歷了泰州-阜寧期的分散斷陷、戴南-三垛期的集中斷陷與鹽城期的坳陷階段。斷層活動性分析表明泰州-阜寧期為同沉積伸展斷層啟動階段,戴南-三垛期為伸展斷層強烈活動階段,鹽城期在弱伸展作用下(SN向拉張)盆地趨于消亡、斷層活動趨于停止。戴南-三垛沉積期與鹽城沉積期之間的三垛事件(NEE向擠壓)造成了盆地的強烈反轉(zhuǎn),銅城斷層因其獨特的走向方位與斷層性質(zhì),在三垛事件中由成盆期的釋放斷層(正斷層)轉(zhuǎn)變?yōu)榈湫偷哪鏀鄬?是蘇北盆地內(nèi)為數(shù)不多的逆斷層之一。總體上看,金湖凹陷內(nèi)的斷裂系統(tǒng)是在基底斷裂控制下多期演化的結(jié)果,晚白堊世-古近紀(jì)成盆期間在區(qū)域近南北向拉張的應(yīng)力場下發(fā)育了一系列次級斷層,從而形成了復(fù)雜的斷裂構(gòu)造系統(tǒng)。金湖凹陷的斷裂系統(tǒng)在成盆前主要經(jīng)歷了印支期前陸逆沖和燕山期左行平移兩個構(gòu)造演化階段(基底主干斷層形成階段),成盆后經(jīng)歷了阜寧期初始伸展階段(盆地分散斷陷階段)、戴南-三垛期強烈伸展階段(盆地集中斷陷階段)、三垛事件斷層反轉(zhuǎn)階段及新近紀(jì)以來的弱伸展-消亡階段(盆地坳陷-消亡階段)。
[Abstract]:The northern Jiangsu Basin is Yang Zi plate is one of the few continental petroliferous basin in the number of Jinhu sag is one of the most important oil and gas producing areas of the basin, the hydrocarbon reservoir and the fault basin system has a close relationship, but the fault depression has long been lack of systematic, in-depth understanding of the foundation. This paper analysis on regional dynamics background, through the fine structure interpretation of the typical profiles, profile and plane structural style analysis, analysis of the evolution of fault activity and structure, focus on the stress field simulation of basin, research on Numerical Simulation of the process of crack formation, expounds the origin and evolution of faults in Jinhu sag the history of the system. Jinhu sag is Yang Cun, Tongcheng and Stone Harbor three fault system, the fault system in the basin and basin forming period experienced multi-stage tectonic evolution stages of tectonic analysis and fault. The simulation results show that the crack, West Yangcun fault (Chajian fault), Shigang fault and Tongcheng fault are late Cretaceous - Paleogene basin basement faults before the product of resurrection, of which Shigang fault and fault Chajian formerly known as the Su Lu orogenic belt of the Indosinian foreland deformation with a foreland zone the thrust faults during the Late Cretaceous to Paleogene faulted basin raised by thrust faults into the basin controlling / control wa listric normal fault. Tongcheng fault was sinistral fault in Late Jurassic period, the translation will Chajian fault and Shigang fault left staggered. And during the late Cretaceous Paleogene basin into fault Chajian release faults. The faults formed in the eastern section of Yang village during the late Cretaceous Paleogene basin, Chajian fault for strong pull fault under expansion. A series of evidence that Jinhu sag in Late Cretaceous Paleogene Paleogene basin forming period Is close to SN the tensile stress field in this area should be Yang Cun, Tongcheng and force under the background, the main fault of Shigang fault were developed flanking characteristic pinnate fault or en echelon fault, the results of the numerical simulation reproduces the formation and development mechanism of these secondary faults, causes are given of the three major fault systems of structural styles explained and elaborated formation characteristics of each fault depression range. Jinhu depression since the late Cretaceous basin experienced multi period and reversal events, bottom-up develops in three tectonic layers, forming three distinct tectonic system in the section, the basin Taizhou - Funing experienced dispersed phase fault depression, Dainan Sanduo period - three concentrated period of Yancheng fault depression and depression stage. The fault activity analysis showed that the Taizhou - Funing period synsedimentary extensional fault start-up phase, Dainan - three For a period of intense activity duo extensional stage, Yancheng in the period under the weak extension (SN tension) basin tends to disappear, the fault activity tends to stop. A South - between three and Yancheng duo sedimentary stage in the sedimentary period of the three events (Duo NEE compression) caused strong inversion, Tongcheng fault because of its unique the orientation and the nature of the fault, in three by the release of fault events duo basin period (fault) into reverse fault in Northern Jiangsu Basin is typical, as one of the few thrusts. On the whole, the fault system in Jinhu depression is in the evolution of multi period results of basement fault control and the late Cretaceous Paleogene basin during the regional north-south extensional stress field under the development of a series of secondary faults, thus forming a complex fault system. The fault system in the Jinhu sag basin before experienced Indosinian foreland thrust and Yanshan During the period of sinistral two tectonic evolution stages (basal main fault formation stage), after a period of Funing basin (basin extensional stage initial rifting stage, dispersion) - three Dainan Sanduo period strong extensional stage (central basin rift stage), three duo event fault inversion stage and Neogene weak the extension and extinction stage (Basin - extinction stage).

【學(xué)位授予單位】：合肥工業(yè)大學(xué)
【學(xué)位級別】：碩士
【學(xué)位授予年份】：2017
【分類號】：P618.13;P542

【相似文獻】

相關(guān)期刊論文 前10條

1 李素梅,龐雄奇,金之鈞,黎茂穩(wěn);蘇北金湖凹陷混合原油的地質(zhì)地球化學(xué)特征[J];石油大學(xué)學(xué)報(自然科學(xué)版);2002年01期

2 能源;漆家福;張春峰;張克鑫;任紅民;鄭元財;;金湖凹陷斷裂特征及其石油地質(zhì)意義[J];大地構(gòu)造與成礦學(xué);2012年01期

3 戴俊生;宋世君;王霞田;張宏國;張虎;;金湖凹陷西斜坡崔莊變換帶研究[J];科技導(dǎo)報;2012年11期

4 嚴(yán)欽尚;張國棟;項立嵩;王慧中;吳邦毓;董榮鑫;王益友;郭文瑩;;蘇北金湖凹陷阜寧群的海侵和沉積環(huán)境[J];地質(zhì)學(xué)報;1979年01期

5 王益友;郭文瑩;張國棟;;幾種地球化學(xué)標(biāo)志在金湖凹陷阜寧群沉積環(huán)境中的應(yīng)用[J];同濟大學(xué)學(xué)報;1979年02期

6 宋寧;王鐵冠;劉東鷹;高德群;;分形方法在蘇北盆地金湖凹陷石油資源評價中的應(yīng)用[J];地質(zhì)科學(xué);2006年04期

7 張云峰;;金湖凹陷汊澗地區(qū)油氣富集規(guī)律分析[J];內(nèi)蒙古石油化工;2010年05期

8 宋寧;郭�，�;劉振;楊帥帥;;金湖凹陷原油輕烴的地球化學(xué)特征及意義[J];天然氣地球科學(xué);2013年01期

9 楊智敏;葛政俊;鄭紅;;金湖凹陷安樂—王龍莊地區(qū)油氣成藏條件研究[J];安徽地質(zhì);2008年03期

10 丁玉盛;蔣弋平;周巨標(biāo);石先達;韓亞飛;覃恒杰;王海波;;金湖凹陷大程莊地區(qū)構(gòu)造特征研究[J];復(fù)雜油氣藏;2011年03期

相關(guān)會議論文 前2條

1 常象春;王明鎮(zhèn);劉玉瑞;;蘇北金湖凹陷流體包裹體與成藏期研究[A];第十屆全國有機地球化學(xué)學(xué)術(shù)會議論文摘要匯編[C];2005年

2 楊曉蘭;劉啟東;;蘇北盆地金湖凹陷晚白堊世泰州組成藏條件研究[A];地質(zhì)與可持續(xù)發(fā)展——華東六省一市地學(xué)科技論壇文集[C];2003年

相關(guān)碩士學(xué)位論文 前5條

1 朱曉超;金湖凹陷斷裂成因與構(gòu)造演化分析[D];合肥工業(yè)大學(xué);2017年

2 王洪艷;金湖凹陷構(gòu)造特征研究及目標(biāo)評價[D];中國石油大學(xué);2011年

3 趙悅;金湖凹陷古近系地下水特征與油氣關(guān)系[D];浙江大學(xué);2013年

4 韓園園;金湖凹陷南部油氣成藏規(guī)律研究[D];中國石油大學(xué);2011年

5 葉蔥林;金湖凹陷構(gòu)造應(yīng)力場模擬[D];中國石油大學(xué);2011年

，

本文編號：1472589