本文選題：鹽動(dòng)力層序　切入點(diǎn)：變形期次　出處：《大地構(gòu)造與成礦學(xué)》2016年05期

【摘要】：鹽動(dòng)力層序是指被動(dòng)鹽底辟周緣發(fā)育的一套角度不整合地層,是識(shí)別鹽盆地早期被動(dòng)底辟的標(biāo)識(shí)。庫(kù)車(chē)地區(qū)鹽構(gòu)造由于被上新世區(qū)域大規(guī)模擠壓事件顯著破壞,其古新世 中新世的早期演化過(guò)程尚存在爭(zhēng)議。本文首次將鹽動(dòng)力層序的研究方法運(yùn)用在庫(kù)車(chē)地區(qū)鹽構(gòu)造研究中,并通過(guò)對(duì)庫(kù)車(chē)褶沖帶的博孜敦鹽底辟進(jìn)行野外觀察、地層恢復(fù)、地震解譯后發(fā)現(xiàn),庫(kù)車(chē)地區(qū)博孜敦鹽底辟南西翼漸新統(tǒng) 中新統(tǒng)發(fā)育一套與鹽底辟活動(dòng)相關(guān)的沉積層序,小層序之間以角度不整合為界,但隨著遠(yuǎn)離底辟地層之間的接觸關(guān)系很快變?yōu)檎辖佑|,符合直立狀復(fù)合型鹽動(dòng)力層序的模型。由此認(rèn)為,庫(kù)車(chē)地區(qū)早期被動(dòng)鹽底辟發(fā)育,鹽構(gòu)造的演化變形可分為兩個(gè)期次:早期被動(dòng)底辟期(漸新世 上新世早期)與后期擠壓改造期(上新世 現(xiàn)今)。通過(guò)對(duì)比物理模擬結(jié)果與地震資料解譯結(jié)果認(rèn)為,庫(kù)車(chē)地區(qū)早期被動(dòng)底辟作用很可能受控于始新世以來(lái)的沖積扇沉積加載作用。
[Abstract]:The salt dynamic sequence refers to a set of angular unconformities developed around the passive salt diapir, which is the mark of identifying the passive diapir in the early salt basin. The salt structure in Kuqa area was significantly destroyed by the Pliocene regional massive compression events. The early evolution process of the Paleocene and Miocene is still controversial. In this paper, the method of salt dynamic sequence is applied to the study of salt structure in Kuqa area for the first time, and the field observation is carried out on the Borzidon salt diapir in Kuqa fold thrust belt. After stratigraphic restoration and seismic interpretation, it was found that a set of sedimentary sequences related to the activities of salt diapir were developed in the Miocene of the Oligocene in the southwestern wing of the salt diapir in Kuqa area, and the angle unconformity was taken as the boundary between the small sequences. However, as the contact relationship between diapir strata becomes integrated contact quickly, it accords with the model of vertical composite salt dynamic sequence. It is concluded that the early passive salt diapir developed in Kuqa area. The evolution and deformation of salt structures can be divided into two stages: the early passive diapir period (Oligocene early Pliocene) and the late compression transformation period (Pliocene). The early passive diapir in Kuqa area was probably controlled by alluvial fan loading since Eocene.
【作者單位】： 中石油東方地球物理公司研究院庫(kù)爾勒分院;浙江大學(xué)地球科學(xué)學(xué)院;教育部含油氣盆地構(gòu)造研究中心;
【基金】：國(guó)家重大專(zhuān)項(xiàng)(2011ZX05009-001) 庫(kù)車(chē)前陸深層油氣地質(zhì)理論與勘探目標(biāo)評(píng)價(jià)(2014E-2101)聯(lián)合資助
【分類(lèi)號(hào)】：P542

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