深水牵引流沉积的研究历程、现状与前景  

History,status and prospect of study on deep-water traction current deposits

作　　者：高振中[1] 何幼斌[1] 刘成鑫[1] 邢凤存[1] 王昌勇[1] 

机构地区：[1]长江大学地球科学学院,湖北荆州434023

出　　处：《古地理学报》2006年第3期331-338,共8页Journal of Palaeogeography：Chinese Edition

基　　金：本文受国家自然科学基金(批准号:40272060);石油科技中青年创新基金(合同号:2002F70102)联合资助

摘　　要：深水牵引流沉积研究,是沉积学研究中一个较新的领域。在这个领域中,中国学者做出了应有的贡献,并且具有自己的特色和优势。目前研究的深水牵引流沉积,一是等深流沉积,二是内波、内潮汐沉积。等深流沉积研究开始于20世纪60年代,早期主要是对小规模的细粒薄层等深流沉积的研究,而现在已发展到对大规模等深流沉积体———等深岩丘的研究。内波、内潮汐沉积研究始于20世纪90年代,也是从小规模内波、内潮汐沉积的鉴别开始,现在已达到研究深海大型沉积物波的阶段。今后等深流沉积研究的主攻方向,应是地层记录中的等深岩丘,并特别注意碎屑岩等深岩丘的发现和研究。内波、内潮汐沉积方面,最有矿产意义的当属由大型沉积物波构建的地质体。而首例地层记录中的大型沉积物波,已在塔里木盆地中部奥陶系中被鉴别出来,并具有含油气远景。从目前对内波、内潮汐的研究势头来看,中国很有希望在该领域继续保持国际领先地位。Research on deep-water traction current is a relatively new domain in sedimentology.The Chinese scholars have made contributions to this study and have their own advantages and peculiarities.Deep-water traction current deposits mainly include two types： the contour current deposits, internal-wave and internal-tide deposits.The former has been studied since 1960＇s. The early studies were mainly aimed at those small-scale, fine-grained and thin-bedded contour current deposits. Now it has been spread to study the large-scale contour current depositional body, named contour lithoherms. Internal-wave and internal-tide researches began in 1990＇s. The early researches started with discriminating internal-wave and internal-tide deposits with small-scale and the current studies focuse on the large-scale sediment waves on the deep-sea floor. The main efforts of future contour current researches should be put on the contour lithoherms in the stratigraphic records, in particular,more attention should be paid to discover and study contour lithoherms of clastics. The geologic entity formed by large-scale sediment-waves is most valuable in mineral resources. The first large sedimentwave has been discriminated in the Middle Ordovician in Tarim Basin and has been proved to have petroliferous potential.Based on the present research status of internal-wave and internal-tide, China may hold a leading position in this domain.

关 键 词：深水牵引流沉积 等深流 内波 内潮汐 沉积物波 

分 类 号：P512.32[天文地球—地质学]