本文關(guān)鍵詞： 烴源巖 植物化石角質(zhì)層 中侏羅世 生物標(biāo)志化合物 窯街盆地　出處：《蘭州大學(xué)學(xué)報(自然科學(xué)版)》2017年04期 　論文類型：期刊論文

【摘要】：通過分析采集自甘肅窯街中侏羅統(tǒng)的炭質(zhì)泥巖、油頁巖、泥巖中的飽和烴餾分和芳烴餾分以及裸子植物化石角質(zhì)層中的相同組分,在樣品中檢測出表征高等植物輸入的生物標(biāo)志化合物,表明裸子植物角質(zhì)層為烴源巖生物標(biāo)志化合物的母源之一.結(jié)合藿烷母質(zhì)類型等參數(shù)的分析,表明烴源巖樣品以高等植物輸入為主,且水生藻類有一定貢獻(xiàn).植物化石角質(zhì)層樣和烴源巖樣中表征細(xì)菌微生物作用、指示沉積環(huán)境以及判斷樣品成熟度的參數(shù)均吻合,說明窯街盆地中侏羅統(tǒng)的沉積相屬于弱氧化-弱還原的半深湖相或濱淺湖相,沉積介質(zhì)為淡水-微咸水,有機(jī)質(zhì)經(jīng)歷過一定程度的微生物降解作用,處于未熟-低熟階段.研究結(jié)果對深入分析窯街盆地中侏羅統(tǒng)烴源巖沉積環(huán)境具有指導(dǎo)意義.
[Abstract]:The saturated hydrocarbon fractions and aromatics fractions from middle Jurassic carbonaceous mudstone, oil shale and mudstone in Yaojie, Gansu Province, and the same components in the fossil kernels of gymnosperms were analyzed. Biomarkers representing the import of higher plants were detected in the samples, indicating that the keratinocytes of gymnosperms are one of the parent sources of biomarkers of hydrocarbon source rocks. The results show that the source rock samples are mainly imported from higher plants, and the aquatic algae contribute to some extent. The plant fossils cuticle samples and hydrocarbon source rock samples represent the action of bacteria and microbes, indicating the sedimentary environment and the parameters of judging the maturity of the samples are consistent. The results show that the sedimentary facies of the Middle Jurassic in Yaojie Basin belong to the semi-deep lacustrine facies with weak redox or shallow lacustrine facies, the sedimentary medium is fresh water and brackish water, and the organic matter has experienced a certain degree of microbial degradation. The results of the study are helpful for the further analysis of the sedimentary environment of the Middle Jurassic source rocks in the Yaojie Basin.
【作者單位】： 蘭州大學(xué)地質(zhì)科學(xué)與礦產(chǎn)資源學(xué)院;中國科學(xué)院地質(zhì)與地球物理研究所蘭州油氣資源研究中心;
【基金】：甘肅省油氣資源研究重點實驗室開放課題基金(FZDKFJJ20150603) 高等學(xué)校博士學(xué)科點專項科研基金項目(20120211110022)
【分類號】：P618.13;Q914

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