發(fā)布時(shí)間：2018-03-08 00:06

  本文選題：控制因素　切入點(diǎn)：構(gòu)造演化　出處：《地學(xué)前緣》2016年05期 　論文類(lèi)型：期刊論文

【摘要】：柴達(dá)木盆地北緣東段石炭系是侏羅系之外的另一套有利生烴層系,針對(duì)前人"石炭系為廣泛分布于柴達(dá)木盆地各殘留凹陷"的普遍認(rèn)識(shí)與實(shí)際鉆探不相符的矛盾,筆者充分利用野外地質(zhì)調(diào)查、鉆井、地震、電法等成果資料,通過(guò)露頭引層、鉆井標(biāo)定、地震相與速度譜識(shí)別等方法手段,進(jìn)行了石炭系頂?shù)捉缑娴淖粉櫧忉?重新厘定了柴北緣東段石炭系殘留地層分布,并通過(guò)平衡剖面恢復(fù)分析了自古生代以來(lái)的構(gòu)造演化特征及其對(duì)石炭系殘留分布的控制作用。結(jié)果表明,柴達(dá)木盆地東部石炭系平面上殘留分布于西段的尕丘凹陷和東段的歐南、霍布遜、德令哈等凹陷,發(fā)育尕丘、歐南、霍布遜等多個(gè)厚度中心;西段尕西—魚(yú)卡凹陷、馬海大紅溝凸起、大柴旦凹陷、紅山—小柴旦凹陷等基本無(wú)石炭系殘留;印支末期構(gòu)造運(yùn)動(dòng)造成不同構(gòu)造單元的差異隆升剝蝕是控制石炭系殘留分布及其厚度差異的主要因素,燕山晚期和喜山晚期構(gòu)造運(yùn)動(dòng)造成殘留分布的分隔性較強(qiáng)。
[Abstract]:Carboniferous in the eastern section of the northern margin of the Qaidam Basin is another set of favorable hydrocarbon-generating strata outside the Jurassic. In view of the contradiction between the common understanding of the Carboniferous system widely distributed in the residual sag of the Qaidam Basin and the actual drilling, the Carboniferous system is widely distributed in the Qaidam Basin. The author makes full use of the field geological survey, drilling, earthquake, electric method and so on. By means of outcrop lead layer, drilling calibration, seismic phase and velocity spectrum identification and so on, the authors have carried out the tracing interpretation of the top and bottom interface of the Carboniferous system. The distribution of the Carboniferous residual strata in the eastern part of the northern margin of Qaidam is redefined, and the structural evolution characteristics since Paleozoic and their controlling effect on the residual distribution of the Carboniferous system are analyzed through the restoration of the equilibrium profile. In the east of the Qaidam Basin, the Carboniferous remains in the Gaqiu Sag in the west and in the East part of the Gaiqiu Sag, Hoboxun, Delingha Sag, and other thickness centers, such as Gaqiu, Ernan and Hobson, and the West Gaxi-Yuka Sag, There is basically no Carboniferous residue in the Mahai Dahonggou uplift, Dachaidan sag and Hongshan-Xiaochaidan sag, and the difference in uplift and denudation caused by the late Indosinian tectonic movement is the main factor controlling the residual distribution and thickness difference of the Carboniferous system. The late Yanshanian and late Himalayan tectonic movements resulted in strong separation of residual distribution.
【作者單位】： 中國(guó)石化勝利油田分公司勘探開(kāi)發(fā)研究院;中國(guó)石化勝利油田分公司勘探開(kāi)發(fā)研究院西部分院;
【基金】：中國(guó)地質(zhì)調(diào)查局項(xiàng)目“柴達(dá)木盆地油氣資源潛力評(píng)價(jià)”(1212010818054);中國(guó)地質(zhì)調(diào)查局項(xiàng)目“柴達(dá)木盆地古生代油氣資源調(diào)查評(píng)價(jià)”(1212011120964) 中國(guó)石化重大專(zhuān)項(xiàng)“西部擠壓盆地山前帶綜合建模研究與目標(biāo)評(píng)價(jià)”(P11077)
【分類(lèi)號(hào)】：P618.13;P534.45
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本文編號(hào)：1581539