海洋地层中石灰质夹层的成因和遗传模式

IF 0.6 4区 工程技术 Q4 ENERGY & FUELS Chemistry and Technology of Fuels and Oils Pub Date : 2024-05-13 DOI:10.1007/s10553-024-01691-0
Dan Lin, Jijia Liao, Mingguang Liao, Yu Hu
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引用次数: 0

摘要

钙质夹层控制着海洋地层中石油和水的迁移。然而,在中国,这类钙质夹层的起源尚未得到详细研究。本文对位于中国海南省东南部的文昌油田珠江地层海相地层中的钙质夹层进行了研究。通过岩心、薄片、扫描电镜、阴极发光观察以及稳定碳和氧同位素数据,研究了钙质夹层的岩性特征、成因类型和特征以及形成过程。钙质夹层由混合沉积物组成,其中主要是含有陆生碎屑的生物碎屑灰岩,其次是钙质砂岩。夹层胶结密集。生物碎屑主要是腕足动物、胸足类动物和有孔虫,少量棘皮动物、双壳类动物、红藻、桡足类动物和虾藻类。成因包括钙质胶结,并伴有相对较弱的压实作用。碳和氧同位素数据表明,形成碳酸盐胶结物的孔隙水主要来自海水和少量流星水。碳酸盐胶结程度与生物碎屑含量有显著关系。根据我们的研究,提出了钙质夹层宏观和微观形成的遗传模型。
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Diagenesis and Genetic Model of Calcareous Interbeds in Marine Strata

Calcareous interbeds control the migration of oil and water in marine strata. However, in China, the origins of such calcareous interbeds have not been investigated in detail. In this paper, we present a study of calcareous interbeds in marine strata of the Zhujiang Formation in the Wenchang Oil Field, which is located in the southeast of Hainan Province, China. The lithological characteristics, types and features of diagenesis, and formation of the calcareous interbeds were investigated using core, thin-section, scanning electron microscopy, and cathodoluminescence observations, and stable carbon and oxygen isotope data. The calcareous interbeds consist of mixed sediments, which are dominated by bioclastic limestones containing terrigenous clasts, along with subordinate calcareous sandstone. The interbeds are densely cemented. The bioclasts are dominantly brachiopods, pleopods, and foraminifera, with minor amounts of echinodermata, bivalves, red algae, ostracods, and bryozoa. Diagenesis involved calcitic cementation, associated with relatively weak compaction. Carbon and oxygen isotopic data indicate the pore water that formed the carbonate cement was mostly sourced from seawater and minor amounts of meteoric water. The degree of carbonate cementation was significantly related to the bioclast content. On the basis of our study, a genetic model for the macroscopic and microscopic formation of calcareous interbeds is proposed.

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来源期刊
Chemistry and Technology of Fuels and Oils
Chemistry and Technology of Fuels and Oils 工程技术-工程:化工
CiteScore
0.90
自引率
16.70%
发文量
119
审稿时长
1.0 months
期刊介绍: Chemistry and Technology of Fuels and Oils publishes reports on improvements in the processing of petroleum and natural gas and cracking and refining techniques for the production of high-quality fuels, oils, greases, specialty fluids, additives and synthetics. The journal includes timely articles on the demulsification, desalting, and desulfurizing of crude oil; new flow plans for refineries; platforming, isomerization, catalytic reforming, and alkylation processes for obtaining aromatic hydrocarbons and high-octane gasoline; methods of producing ethylene, acetylene, benzene, acids, alcohols, esters, and other compounds from petroleum, as well as hydrogen from natural gas and liquid products.
期刊最新文献
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