本文選題：薩爾干組 + 中上奧陶統(tǒng)��； 參考：《石油實(shí)驗(yàn)地質(zhì)》2016年02期

【摘要】：柯坪露頭奧陶系地層是塔里木盆地大型碳酸鹽巖臺(tái)地的西延部分,兩者經(jīng)歷了相同的沉積演化過程。以古生物資料為基礎(chǔ),通過碳同位素地層對(duì)比,認(rèn)為沙雅隆起中奧陶統(tǒng)一間房組發(fā)育的中達(dá)瑞威爾階碳同位素正漂移(MDICE)和上奧陶統(tǒng)良里塔格組內(nèi)發(fā)育的凱迪階早期古登伯格碳同位素正漂移(GICE),分別對(duì)應(yīng)于柯坪露頭薩爾干組下部和其浪組中下部的正漂移,推測(cè)其浪組上部存在加里東中期Ⅱ幕構(gòu)造運(yùn)動(dòng)的不整合面,不整合面之上的其浪組和印干組地層對(duì)應(yīng)于沙雅隆起上奧陶統(tǒng)桑塔木組。受早—中奧陶世全球海平面上升的影響,塔里木盆地北部中下奧陶統(tǒng)臺(tái)地東側(cè)表現(xiàn)為陡坡,臺(tái)地厚度向西北逐漸減薄,沙雅隆起西北地區(qū)和阿瓦提—柯坪北部地區(qū)屬于斜坡—盆地沉積體系。薩爾干組海相烴源巖主要由達(dá)瑞威爾階中晚期凝縮段沉積構(gòu)成,結(jié)合露頭和沙雅隆起鉆井電性特征,認(rèn)為該套烴源巖在阿瓦提和沙雅隆起西北地區(qū)也有分布。良里塔格組沉積時(shí)期,柯坪、塔中和沙雅隆起小型碳酸鹽巖臺(tái)地之間的凹陷是GICE對(duì)應(yīng)的良里塔格組烴源巖有利發(fā)育地區(qū)。印干組烴源巖分布范圍最廣,在阿瓦提和沙雅隆起均有分布。
[Abstract]:The Ordovician strata in Keping outcrop are part of the western extension of large carbonate platform in Tarim Basin, and they have undergone the same sedimentary evolution process.Based on paleontological data, carbon isotopic stratigraphic correlation,It is considered that the positive drift of carbon isotopes of the Middle Daraville order developed in the Middle Ordovician Intermediate formation in the Shaya uplift and in the Litagar formation of the Upper Ordovician Tagger formation, and the positive drift of the early Cedenberger carbon isotopes in the upper Ordovician formation correspond to those of Kopinglu, respectively.The positive drift of the lower part of the Tosargan formation and the middle and lower part of its wave formation,It is inferred that there is an unconformable surface in the middle Caledonian second act tectonic movement in the upper part of the Qilang formation, and the strata of the Qilang formation and the Ingan formation above the unconformable surface correspond to the Upper Ordovician Santamu formation in the Shaya uplift.Influenced by the rise of global sea level in the Early-Middle Ordovician, the eastern side of the Meso-Lower Ordovician platform in the northern part of the Tarim Basin shows a steep slope, and the thickness of the platform gradually decreases to the northwest.The northwest area of Shaya uplift and the northern Awati-Keping area belong to the slope-basin sedimentary system.The marine source rocks of the Sargan formation are mainly composed of the late condensed member deposits of the Darivier stage. Combined with the electrical characteristics of outcrop and Shaya uplift, it is considered that the source rocks are also distributed in the northwest area of Awati and Shaya uplift.The depression between the small carbonate platform of Keping, Tazhong and Shaya uplift in the sedimentary period of Lianglitag formation is the favorable area for the source rocks of the Lianglitag formation corresponding to GICE.The source rocks of the Ingan formation are most widely distributed, both in Awati and Shaya uplift.
【作者單位】： 成都理工大學(xué)油氣藏地質(zhì)及開發(fā)工程國(guó)家重點(diǎn)實(shí)驗(yàn)室;中國(guó)石化西北油田分公司勘探開發(fā)研究院;
【基金】：國(guó)家科技重大專項(xiàng)(2011ZX05005-004,2016ZX05005-002) 國(guó)家重點(diǎn)基礎(chǔ)研究發(fā)展計(jì)劃(973計(jì)劃)項(xiàng)目(2012CB214806)資助
【分類號(hào)】：P618.13

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