【摘要】：針對黃河口凹陷新生代斷裂體系與構(gòu)造演化尚不明確的問題,運(yùn)用三維地震資料、剖面特征分析和水平相干切片分析相結(jié)合的手段,研究了黃河口凹陷新生代斷裂體系與構(gòu)造演化發(fā)育規(guī)律。結(jié)果表明:新生代以來,受多期構(gòu)造運(yùn)動的影響,研究區(qū)斷裂體系具有多方向、多性質(zhì)、多期次疊加復(fù)合特征——"三三特征",即3組優(yōu)勢方向斷裂、3種斷裂性質(zhì)、3期構(gòu)造演化;凹陷發(fā)育近EW向(NWW向)、NNE向(近SN向)、NE向3組優(yōu)勢方向斷裂,近EW向和NE向斷裂為拉張或走滑-拉張性質(zhì)斷裂,NNE向斷裂為走滑性質(zhì)斷裂;盆地具有典型的斷陷與坳陷疊置結(jié)構(gòu);可劃分為3個(gè)構(gòu)造演化期次,即E_2k—E_(2s_4)早期裂陷階段、E_(2s_3)—E_3d裂陷伸展階段和N_1g—Qp裂后拗陷階段。該研究對黃河口凹陷后續(xù)油氣勘探具有重要的指導(dǎo)意義。
[Abstract]:In order to solve the problem that the Cenozoic fault system and tectonic evolution in Huanghe sag are not clear, the method of combining 3D seismic data, profile characteristic analysis and horizontal coherence slice analysis is used. The Cenozoic fault system and tectonic evolution in Huanghekou sag are studied. The results show that since the Cenozoic, the fault system in the study area has many directions and properties under the influence of multiple tectonic movements. The multi-stage superimposed composite characteristics-"three and three characteristics", are three groups of dominant direction faults and three types of fault properties and three stages of tectonic evolution, and the depression is characterized by three groups of dominant faults in the near EW direction (NWW direction) and the NNE direction (near SN direction) and the three groups of NE trending faults in the sag. The near EW and NE trending faults are extensional or strike-slip extensional faults and NNE-trending faults are strike-slip faults, the basins have typical fault-depression superimposed structures, and can be divided into three tectonic evolution stages. That is, E2k-E _ (2s_4) early rift stage, E _ (2s_3) -E _ P _ 3 _ D rift extension stage and N_1g-Qp post-rift depression stage. This study is of great significance for the subsequent oil and gas exploration in the Huanghe Depression.
【作者單位】： 中國石油大學(xué)(華東);
【基金】：“十二五”國家科技重大專項(xiàng)“近海大中型油氣田形成條件與分布”(2011ZX05023-006)
【分類號】：P618.13

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