龙门山甘溪泥盆系生物骨架富集层成因机制
发布时间：2019-05-17 23:32
【摘要】：四川龙门山泥盆系显著特征是地层中广泛发育类型多样的生物骨架富集层。依据生物类型和几何形态,将生物骨架富集层综合划分为两大类13种。富集层中生物类型、排列方式、埋藏特征和厚度特征是恢复富集层成因过程的重要标志,据此将龙门山泥盆系生物骨架富集层分为6种成因类型:机会种簸扬富集层、风暴簸扬富集层、近源风暴岩、远源风暴岩、基本生物成因富集层和凝聚型富集层。建立了龙门山泥盆系各种生物骨架富集层成因类型的分布模式,从近岸到远岸依次分布风暴簸扬富集层、近源风暴岩、远源风暴岩、机会种簸扬富集层和凝聚型富集层成因模式,而基本生物成因富集层成因模式则分布广泛,从近岸到远岸均有分布。生物骨架富集层的形成受生物、沉积和水动力及其相互作用的制约,分布于不同的沉积环境,是沉积环境分析的有用工具。
[Abstract]:The Devonian system in Longmen Mountain, Sichuan Province is characterized by the extensive development of diverse biological skeleton enrichment layers in the strata. According to the biological type and geometric morphology, the biological skeleton enrichment layer is divided into two categories and 13 species. The biological types, arrangement, buried characteristics and thickness characteristics in the enrichment layer are important symbols for restoring the genetic process of the enrichment layer. According to this, the Devonian biological skeleton enrichment layer in Longmen Mountain is divided into six genetic types: opportunity species to raise the enrichment layer, Storm boosts enrichment layer, near source storm rock, far source storm rock, basic biogenic enrichment layer and condensed enrichment layer. The distribution models of the genetic types of various biological skeleton enrichment layers in Longmenshan Devonian are established. From the inshore to the far shore, the storm dusting enrichment layer, the near-source storm rock and the far-source storm rock are distributed in turn. The genetic model of enrichment layer and condensed enrichment layer is promoted by opportunity species, while the genetic model of basic biogenic enrichment layer is widely distributed, from inshore to far shore. The formation of biological skeleton enrichment layer is restricted by biological, sedimentary and hydrodynamic forces and their interactions, and is distributed in different sedimentary environments. It is a useful tool for sedimentary environment analysis.
【作者单位】： 成都理工大学油气藏地质及开发国家重点实验室;成都理工大学沉积地质研究院;
【基金】：国家自然科学基金项目“龙门山地区泥盆纪土桥子组高频韵律旋回成因及古气候意义研究”(41172100) 四川省教育厅自然科学重点项目“龙门山地区泥盆纪风暴沉积及其地质意义”(12ZA012)
【分类号】：P534.44;Q911
，
本文编号：2479490
[Abstract]:The Devonian system in Longmen Mountain, Sichuan Province is characterized by the extensive development of diverse biological skeleton enrichment layers in the strata. According to the biological type and geometric morphology, the biological skeleton enrichment layer is divided into two categories and 13 species. The biological types, arrangement, buried characteristics and thickness characteristics in the enrichment layer are important symbols for restoring the genetic process of the enrichment layer. According to this, the Devonian biological skeleton enrichment layer in Longmen Mountain is divided into six genetic types: opportunity species to raise the enrichment layer, Storm boosts enrichment layer, near source storm rock, far source storm rock, basic biogenic enrichment layer and condensed enrichment layer. The distribution models of the genetic types of various biological skeleton enrichment layers in Longmenshan Devonian are established. From the inshore to the far shore, the storm dusting enrichment layer, the near-source storm rock and the far-source storm rock are distributed in turn. The genetic model of enrichment layer and condensed enrichment layer is promoted by opportunity species, while the genetic model of basic biogenic enrichment layer is widely distributed, from inshore to far shore. The formation of biological skeleton enrichment layer is restricted by biological, sedimentary and hydrodynamic forces and their interactions, and is distributed in different sedimentary environments. It is a useful tool for sedimentary environment analysis.
【作者单位】： 成都理工大学油气藏地质及开发国家重点实验室;成都理工大学沉积地质研究院;
【基金】：国家自然科学基金项目“龙门山地区泥盆纪土桥子组高频韵律旋回成因及古气候意义研究”(41172100) 四川省教育厅自然科学重点项目“龙门山地区泥盆纪风暴沉积及其地质意义”(12ZA012)
【分类号】：P534.44;Q911
，
本文编号：2479490
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