本文選題：遺跡化石　切入點：依木干他烏組　出處：《地質(zhì)通報》2017年Z1期 　論文類型：期刊論文

【摘要】：通過對塔里木盆地柯坪露頭志留系依木干他烏組中遺跡化石的研究,鑒別出6屬7種�；肿佑蠧hondrites isp.,Gordia.isp.,Helminthopsis aff.abeli,Ophiomorpha nodosa,Planolites beverleyensis,Planolites montanus,Thalassinoides isp.。這些遺跡化石具有較高的分異度和較低的豐度。按古生態(tài)或造跡生物的行為習(xí)性分類,可分為3種生態(tài)類型:(1)居住跡(Domichnia),Ophiomorpha nodosa,Thalassinoides isp.;(2)進食跡(Fodinichnia),Planolites beverleyensis,Planolites montanus,Chondrites isp.;(3)覓食跡(Repichnia),Gordia isp.,Helminthopsis aff.abeli。根據(jù)遺跡化石的古生態(tài)特征、沉積序列上的分布特點及圍巖和沉積構(gòu)造特征,依木干他烏組的遺跡化石可歸為Planolites-Chondrites遺跡組合,屬于Cruziana遺跡相,形成于泥坪沉積環(huán)境。
[Abstract]:The trace fossils of the Yimugan Tawu formation in Keping outcrop, Tarim Basin, were studied. 7 species belonging to 6 genera have been identified. The fossils are Chondrites isp.Gordia.isp.Helminthopsis aff.abeliomorpha Nodosa Planolites montanusus Thalassinoides isp.These trace fossils have higher differentiation and lower abundance. It can be divided into three ecological types: 1) Domichniaanus (Ophiomorpha nodosa) Thalassinoides isp.f2) Planolites montanusus planolites montanusi Chondrites isp.3). According to the paleoecological characteristics of trace fossils, the distribution characteristics of the sedimentary sequence and the characteristics of surrounding rock and sedimentary structure. The trace fossils of the Yimugantawu formation can be classified as Planolites-Chondrites relic assemblage, belonging to the Cruziana trace facies and formed in the mud flat sedimentary environment.
【作者單位】： 中國地質(zhì)調(diào)查局油氣資源調(diào)查中心;
【基金】：中國地質(zhì)調(diào)查局項目《塔里木盆地及周緣油氣基礎(chǔ)地質(zhì)調(diào)查》(編號:12120115001801和《塔里木盆地油氣資源戰(zhàn)略選區(qū)調(diào)查》(編號:1211302108022)
【分類號】：Q911.28

【相似文獻】

相關(guān)期刊論文 前1條

1 張師本，，王成源;從牙形刺動物群論依木干他烏組的時代[J];地層學(xué)雜志;1995年02期

本文編號：1652854