走向多极:碎屑沉积学研究的十对热点问题

发布时间：2018-03-23 09:57

本文选题：碎屑岩　切入点：碎屑沉积学　出处：《东北石油大学学报》2017年04期

【摘要】：在分析碎屑沉积学研究进展的基础上,对主要热点问题进行概括。碎屑沉积学研究处于活跃时期,研究领域的发展具有明显的多极化趋势,可以概括为"一竖一横""一粗一细""一深一浅""一大一小""一前一后""一远一近""一分一合""一长一短""一热一冷""一急一缓"等十对热点问题。沉积相模式研究方法从垂向剖面分析法向建筑结构要素分析法发展;在对细粒沉积物进行研究的同时,粗粒沉积体系研究取得成果;异常重力流、浅水三角洲研究十分活跃,深海沉积模式不断丰富;研究视野向大到星际研究、小到微生物沉积构造研究两方面延伸;物源和疏松沉积物变形研究不断深入;深时气候和地球未来环境变化研究成为沉积学关注的焦点;分支河道体系和汇流盆地水系研究成为源汇体系研究的新动向;长达数十甚至数百公里的大型冲积体系研究越来越多;不同气候带环境下河流和湖泊沉积的多样性研究越来越深入;季节性河流沉积特征揭示大量古气候和古环境信息。
[Abstract]:Based on the analysis of the research progress in detrital sedimentology, the main hot issues are summarized. The research of clastic sedimentology is in active period, and the development of the research field has an obvious trend of multipolarization. It can be summarized as "vertical and horizontal," "one thick, one thin," "one deep, one shallow," "one big, one small," "one big and one small," "one big, one small," "one distance, one close," "one minute, one combination," "one long, one short," "one hot, one cold, one urgent, one slow", etc. Research on sedimentary facies models. The research method is developed from vertical section analysis to building structure element analysis. At the same time of studying fine grain sediments, the study of coarse grain sedimentary system has achieved results; the study of anomalous gravity currents, shallow water deltas is very active, and the deep-sea sedimentary models are constantly rich; the research field of view extends to interstellar study. The research on sedimentary structure of microorganism, the study of provenance and loose sediment deformation, the deep climate and the future environmental change of the earth become the focus of sedimentology. The study of branching channel system and catchment system in confluence basin has become a new trend in the study of source and sink system, and there are more and more studies on large-scale alluvial system of tens or even hundreds of kilometers. The diversity of fluvial and lacustrine sediments in different climatic zones has been studied more and more deeply, and the characteristics of seasonal fluvial sediments reveal a great deal of paleoclimate and paleoenvironmental information.
【作者单位】：长江大学地球科学学院;
【基金】：国家自然科学基金项目(41172106,41302096) 国家科技重大专项(2016ZX05027-002-007)
【分类号】：P512.2;P618.13

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