本文關(guān)鍵詞： 構(gòu)造特征 渤海南部 郯廬斷裂帶 新生代 渤海灣盆地　出處：《大地構(gòu)造與成礦學(xué)》2017年01期 　論文類型：期刊論文

【摘要】：利用三維地震資料及鉆井資料,在對(duì)斷裂體系精細(xì)刻畫的基礎(chǔ)上,結(jié)合區(qū)域地球動(dòng)力學(xué)背景,就渤海灣盆地渤海海域南部地區(qū)(包括渤南低凸起、黃河口凹陷、萊北低凸起、萊州灣凹陷)新生代的構(gòu)造發(fā)育演化特征及沉積 沉降中心遷移規(guī)律進(jìn)行了詳細(xì)分析。研究結(jié)果表明:斷裂體系存在三組優(yōu)勢(shì)發(fā)育方向,NNE向斷裂屬郯廬斷裂帶渤南段,可分為西、中、東三個(gè)分支帶,走滑特征明顯;近EW向及NE向?yàn)樯煺剐再|(zhì)的控凹、控帶斷裂;三組斷裂相互切割,形成了渤海南部地區(qū)"東西分帶、南北分塊"的構(gòu)造格局;古近紀(jì)具有兩個(gè)沉積 沉降中心,黃河口凹陷中心受控于近EW向斷裂,萊州灣凹陷的沉積中心受近EW向和NNE向斷裂共同控制,至新近紀(jì),沉積中心呈由南向北遷移的規(guī)律;渤海南部地區(qū)構(gòu)造演化體現(xiàn)了斷 拗與走滑的疊加效應(yīng),可以劃分為孔店組 沙四段沉積期的初始裂陷、沙三段沉積期的伸展裂陷、沙二段 東營組沉積期的走滑 伸展和館陶組沉積期以來的走滑 裂后拗陷四個(gè)階段。
[Abstract]:Based on the detailed description of the fault system and the regional geodynamic background, the south area of Bohai Sea area (including Bonan low uplift and Huanghe Estuary depression) in Bohai Bay Basin is studied by using 3D seismic data and drilling data. The evolution characteristics of Cenozoic tectonics and the migration of sedimentary subsidence center in Laibei low uplift and Laizhou Bay sag are analyzed in detail. The results show that there are three dominant development directions in fault system. The NNE fault belongs to the southern segment of the Tanlu fault zone, which can be divided into three branches: west, middle and east, with obvious strike-slip characteristics. The near EW and NE directions are extensional concave and controlled zone faults. The three groups of faults cut each other, forming the tectonic pattern of "east-west zonation, north-south block" in the southern area of Bohai Sea. There are two sedimentary subsidence centers in Paleogene. The center of Huanghou sag is controlled by near EW fault, and the sedimentary center of Laizhou Bay depression is controlled by near EW direction and NNE direction fault to Neogene. The sedimentary center moves from south to north. The tectonic evolution of the southern Bohai Sea reflects the superposition effect of fault depression and strike-slip, which can be divided into initial rift in the depositional period of the fourth member of Yunsha formation in Kongdian formation and extensional rift in the sedimentary period of the third member of Shahejie formation. There are four stages of strike-slip extension in the sedimentary period of the Yidongying formation in the second member of the Shahejie formation and four stages of the post-depression of the strike-slip rift since the sedimentary period of the Guantao formation.
【作者單位】： 中國石油大學(xué)(華東)地球科學(xué)與技術(shù)學(xué)院;青島海洋科學(xué)與技術(shù)國家實(shí)驗(yàn)室;中海石油(中國)有限公司天津分公司;
【基金】：國家科技重大專項(xiàng)(2016ZX05024-002-001) 中央高�；究蒲袠I(yè)務(wù)費(fèi)專項(xiàng)資金(16CX06043A)聯(lián)合資助
【分類號(hào)】：P618.13;P548
【正文快照】： 0引言控制作用(孫景耀等,2006;牛成民,2012;辛云路等,2013),其成因機(jī)制存在“走滑拉分”與“伸展主控、走渤海南部海域位于渤海灣盆地濟(jì)陽坳陷以東�；脑臁钡臓�(zhēng)議(蔡?hào)|升等,2001;彭文緒等,2009b;域,包括渤南低凸起、萊北低凸起和黃河口凹陷、黃雷等,2012a;牛成民,2012)。上

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