【摘要】：四川龍門山泥盆系顯著特征是地層中廣泛發(fā)育類型多樣的生物骨架富集層。依據(jù)生物類型和幾何形態(tài),將生物骨架富集層綜合劃分為兩大類13種。富集層中生物類型、排列方式、埋藏特征和厚度特征是恢復(fù)富集層成因過程的重要標(biāo)志,據(jù)此將龍門山泥盆系生物骨架富集層分為6種成因類型:機(jī)會(huì)種簸揚(yáng)富集層、風(fēng)暴簸揚(yáng)富集層、近源風(fēng)暴巖、遠(yuǎn)源風(fēng)暴巖、基本生物成因富集層和凝聚型富集層。建立了龍門山泥盆系各種生物骨架富集層成因類型的分布模式,從近岸到遠(yuǎn)岸依次分布風(fēng)暴簸揚(yáng)富集層、近源風(fēng)暴巖、遠(yuǎn)源風(fēng)暴巖、機(jī)會(huì)種簸揚(yáng)富集層和凝聚型富集層成因模式,而基本生物成因富集層成因模式則分布廣泛,從近岸到遠(yuǎn)岸均有分布。生物骨架富集層的形成受生物、沉積和水動(dòng)力及其相互作用的制約,分布于不同的沉積環(huán)境,是沉積環(huán)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.
【作者單位】： 成都理工大學(xué)油氣藏地質(zhì)及開發(fā)國家重點(diǎn)實(shí)驗(yàn)室;成都理工大學(xué)沉積地質(zhì)研究院;
【基金】：國家自然科學(xué)基金項(xiàng)目“龍門山地區(qū)泥盆紀(jì)土橋子組高頻韻律旋回成因及古氣候意義研究”(41172100) 四川省教育廳自然科學(xué)重點(diǎn)項(xiàng)目“龍門山地區(qū)泥盆紀(jì)風(fēng)暴沉積及其地質(zhì)意義”(12ZA012)
【分類號(hào)】：P534.44;Q911
，

本文編號(hào)：2479490