本文選題：生物地層 + 白云巖　； 參考：《地層學(xué)雜志》2017年01期

【摘要】：塔里木地塊寒武紀(jì)臺(tái)地相區(qū)地層白云巖是油氣勘探的主要目標(biāo)之一,但是由于缺乏三葉蟲(chóng)等生物化石,地層的等時(shí)劃分成為難點(diǎn)。雖然碳同位素曲線以及自然伽馬曲線是兩種較為有效的地層等時(shí)對(duì)比的手段,然而由于這兩種數(shù)據(jù)的獲得比較困難,限制了這些方法的廣泛應(yīng)用。通過(guò)肖爾布拉克露頭剖面巖石及鉆井方1、中深1、中深5、英買7、英買36和牙哈5等7個(gè)剖面的巖芯巖屑薄片中的所有生物化石碎片的研究,揭示了塔里木盆地寒武紀(jì)臺(tái)地區(qū)生物群落的時(shí)空分布模式。揭示的不同剖面生物群落序列具有非常好的橫向一致性,因此自下而上確定了9個(gè)具有區(qū)域地層意義的生物群落,它們分別為:1)海綿動(dòng)物群落,分布于紐芬蘭統(tǒng)幸運(yùn)階玉爾吐斯組底部;2)微生物-小殼生物群落,分布于紐芬蘭統(tǒng)第二階的玉爾吐斯組的頂部;3)三葉蟲(chóng)群落,主要分布于第二統(tǒng)第三階的肖爾布拉克組和第四階的吾松格爾組;4)包覆狀-泡沫狀微生物群落分布于第二統(tǒng)第三階的肖爾布拉克組;5)席狀-包覆狀微生物群落,分布于第二統(tǒng)第四階的肖爾布拉克組上部;6)棘皮類-三葉蟲(chóng)群落/三葉蟲(chóng)-棘皮類群落,首現(xiàn)層位位于第二統(tǒng)第四階的吾松格爾組;7)棘皮類群落,主要分布于第三統(tǒng)鼓山階的阿瓦塔格組,局部上延到第三統(tǒng)古丈階的下丘里塔格組;8)微生物席群落,主要分布于第三統(tǒng)鼓山階的阿瓦塔格組中上部,局部上延到第三統(tǒng)古丈階的下丘里塔格組;9)云朵狀微生物群落,主要分布于第三統(tǒng)古丈階的下丘里塔格組,局部上延到芙蓉統(tǒng)排碧階的蓬萊壩組,下延到阿瓦塔格組。這些群落為塔里木臺(tái)地相區(qū)缺乏三葉蟲(chóng)化石的白云巖"啞地層"的再劃分提供了依據(jù)。
[Abstract]:Stratigraphic dolomite in Cambrian platform facies area of Tarim block is one of the main targets of oil and gas exploration, but due to the lack of biofossils such as trilobites, isochronous stratigraphic division becomes difficult. Although carbon isotope curves and natural gamma curves are two effective methods for isochronous stratigraphic correlation, however, due to the difficulty of obtaining these two kinds of data, the wide application of these methods is limited. Through the study of all the biofossil fragments in the core cuttings of the Shaublak outcrop profile, including the rock and drilling sections 1, Zhongshen 1, Zhongshen 5, Yingmai 7, Yingmai 36 and Yaha 5, etc., The temporal and spatial distribution model of biota in Cambrian platform area of Tarim Basin is revealed. The sequence of biota revealed in different profiles has very good horizontal consistency, so nine communities of regional stratigraphic significance have been determined from the bottom up, which are respectively the community of sponges: 1). Distributed at the bottom of the Yultus formation of the lucky stage of Newfoundland (2) the microbe-shell biota, and on the top of the Yultux formation of the second order of the Newfoundland series) trilobites, Mainly distributed in the third order of the second system, Scholburak formation and the fourth order of the Usonger formation, the cladding and froth microbe communities were distributed in the third order of the second series, the Scholburak formation, and the third order of the second series, the table-shaped and the encrusted microbial communities. The acanthoderm-trilobite community / Trichoderm-echinoderm community distributed in the upper part of the Scholburak formation in the fourth order of the second series, and the first layer located in the fourth order of the second series, the Wusongger formation, 7) the acanthopanth community, the first layer of which is located in the fourth order of the second series. The Awa tag formation, which is mainly distributed in the Gushan stage of the third Series, partially extends to the Guzhang stage of the third Series, and is mainly distributed in the middle and upper parts of the Awa Tag formation of the third Gushan terrace. The cloud-like microbial community is mainly distributed in the lower Qiulitag formation of the third Paleozoic, the Pengleba formation of the Paleobitic stage of the Furong series and the Awa tag formation. These communities provide a basis for the subdivision of dolomite "dummy strata" in the Tarim platform, where there is a lack of trilobite fossils.
【作者單位】： 中國(guó)石油天然氣股份有限公司塔里木油田分公司勘探開(kāi)發(fā)研究院;中國(guó)科學(xué)院油氣資源研究重點(diǎn)實(shí)驗(yàn)室 中國(guó)科學(xué)院地質(zhì)與地球物理研究所;中國(guó)科學(xué)院大學(xué);
【基金】：國(guó)家自然科學(xué)基金(No.41372121) 國(guó)家重點(diǎn)科技專項(xiàng)(2016ZX05004-004)共同資助
【分類號(hào)】：P534.41;Q911

【相似文獻(xiàn)】

相關(guān)期刊論文 前5條

1 陳文玲;羅平;單鈺銘;楊式升;宋金民;;塔里木蘇蓋特布拉克地區(qū)肖爾布拉克組白云巖儲(chǔ)層特征分析[J];石油地質(zhì)與工程;2010年01期

2 李慶;胡文tD;錢一雄;張軍濤;王小林;朱井泉;;塔里木盆地肖爾布拉克組溶蝕型白云巖儲(chǔ)層發(fā)育特征[J];石油與天然氣地質(zhì);2011年04期

3 趙靖舟;;中國(guó)北部寒武紀(jì)介形蟲(chóng)地層分布時(shí)代[J];西北地質(zhì)科學(xué);1988年02期

4 趙靖舟;;中國(guó)北部寒武紀(jì)介形蟲(chóng)地層分布時(shí)代[J];西北地質(zhì)科學(xué);1988年22期

5 ;[J];;年期

，

本文編號(hào)：2036972