%0 Journal Article
%T 基于全岩心CT的遗迹化石识别及沉积环境分析:以加拿大麦凯Ⅲ油砂区块为例*&lt;br&gt;Ichnology identification and sedimentary enviorment analysis based on CT scanning: A case study from Mackay Ⅲ oil sands,Canada
%A 陈浩
%A 黄继新
%A 常广发
%A 武军昌
%A 孙天建
%J 电子科技大学学报
%D 2018
%R 10.7605/gdlxb.2018.04.051
%X 遗迹化石研究对于沉积环境分析具有重要意义。以加拿大麦凯&lt;em&gt;Ⅲ&lt;/em&gt;油砂区块下白垩统&lt;em&gt;McMurray&lt;/em&gt;组为研究对象,利用高分辨率岩心照片和全岩心&lt;em&gt;CT&lt;/em&gt;扫描资料,在确认研究目的层遗迹化石发育属种、单体规模、组合类型及指相特征的基础上,分析了主力油砂层的沉积环境。结果表明: 目的层发育遗迹化石&lt;em&gt;10&lt;/em&gt;属&lt;em&gt;12&lt;/em&gt;种,包括Asterosoma &lt;em&gt;isp.&lt;/em&gt;,Chondrites &lt;em&gt;isp&lt;/em&gt;.,Diplocraterion &lt;em&gt;isp.&lt;/em&gt;,Ophiomorpha nodosa,Palaeophycus tubularis,Planolites beverleyensis,Planolites &lt;em&gt;isp.&lt;/em&gt;,Rosselia &lt;em&gt;isp.&lt;/em&gt;,Skolithos verticalis,Skolithos &lt;em&gt;isp.&lt;/em&gt;,Teichichnus &lt;em&gt;isp.&lt;/em&gt;,Thalassinoides &lt;em&gt;isp.&lt;/em&gt;;根据遗迹化石产状与围岩沉积特征,建立了Ophiomorpha-Skolithos、Asterosoma-Chondrites-Rosselia和Teichichnus-Rosselia￣Thalassinoides共&lt;em&gt;3&lt;/em&gt;种遗迹组合,分别代表潮间带、潮下带以及浅海陆棚沉积环境中的遗迹化石组成特征。研究区油砂层优质储油砂体为潮间带沉积产物,潮汐砂坝、潮成砂脊为沥青的主要储集体。本研究既体现了全岩心&lt;em&gt;CT&lt;/em&gt;资料在遗迹化石研究中的应用,也为潮坪沉积环境分析提供了有益参考。&lt;br&gt;Ichnology provides a basis for identification and analysis of depositional environment. Taking the Lower Cretaceous McMurray Formation,Mackay Ⅲ oil sands,Canada as an example,the sedimentary environments of the reservoir were studied with respect to trace fossils' species,size,associations,and facies indicators by high-resolution core photos and CT data. Results indicate that there are 12 species of ten genera in the Middle and Upper McMurray Formation,including &lt;em&gt;Asterosoma&lt;/em&gt; isp.,&lt;em&gt;Chondrites&lt;/em&gt; isp.,&lt;em&gt;Diplocraterion&lt;/em&gt; isp.,&lt;em&gt;Ophiomorpha nodosa&lt;/em&gt;,&lt;em&gt;Palaeophycus tubularis&lt;/em&gt;,&lt;em&gt;Planolites beverleyensis&lt;/em&gt;,&lt;em&gt;Planolites&lt;/em&gt; isp.,&lt;em&gt;Rosselia&lt;/em&gt; isp.,&lt;em&gt;Skolithos verticalis&lt;/em&gt;,&lt;em&gt;Skolithos&lt;/em&gt; isp.,&lt;em&gt;Teichichnus&lt;/em&gt; isp.,and &lt;em&gt;Thalassinoides&lt;/em&gt; isp.. According to the features of these fossils and surrounding lithology,three combinations, including &lt;em&gt;Ophiomorpha-Skolithos&lt;/em&gt;,&lt;em&gt;Asterosoma-Chondrites-Rosselia&lt;/em&gt; and &lt;em&gt;Teichichnus-Rosselia-Thalassinoides&lt;/em&gt;, are established,representing intertidal,subtidal and shallow-marine environments respectively. Sand bodies in reservoir were deposited in the intertidal setting,being the main accumulation of hydrocarbon. This study not only reflects the superiority of CT data,but also provides a reference for recognizing the tidal flat environments
%K 加拿大
%K 油砂
%K 下白垩统
%K CT 扫描
%K 遗迹化石
%K &lt
%K br&gt
%U http://manu22.magtech.com.cn/gdlxb/CN/abstract/abstract9802.shtml