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第32届国际沉积学会议(32nd IAS Meeting of Sedimentology)于2016年5月23—25日在摩洛哥马拉喀什召开,来自43个国家和地区的360余名学者参加了本次会议。综述研究表明,会议研究热点为陆相沉积环境、浅水沉积与滨岸潮汐、深水沉积与事件沉积、碳酸盐与化学岩沉积、沉积过程与盆地分析、成岩作用与油气储集层等研究领域。会议主要研究进展表现为:波浪再悬浮作用(wave resuspension)与异重流(hyperpycnal flows)是陆架边缘斜坡快速进积的主要因素;海啸发生周期为14~35ka,后积层理(backset-bedding)为海啸沉积识别标志;海底滑坡多由海底地震、天然气水合物泄露等触发,其块状搬运沉积物(MTD)包括滑塌头部、滑动底面、滑塌主体以及滑塌后期浊流沉积;玄武岩等基岩的风化作用提供硅与富镁碱性水,有利于菱沸石与白云石的形成;受构造作用影响,隆起剥蚀区与沉积区可互为转化;物源性质、供给量及搬运或分散过程控制了沉积面貌(源汇系统);构造活动直接控制可容纳空间变化、地貌变化、源区剥蚀速率、沉积物供应速率等。最后,本文对比了中外沉积学发展差异,讨论了中国沉积学发展方向。
The 32nd IAS Meeting of Sedimentology took place in Marrakesh, Morocco, May 23-25, 2016. More than 360 scholars from 43 countries and regions attended the conference. The review shows that the research focuses are continental depositional environment, shallow water deposition and coastal tide, deepwater sedimentation and event deposition, carbonate and chemical rock deposition, sedimentary process and basin analysis, diagenesis and oil and gas reservoir research fields . The main research progresses are as follows: wave resuspension and hyperpycnal flows are the main factors of rapid ramp-up on the edge of the shelf; the tsunami period is from 14 to 35 ka, and the backset-bedding ) Are the identifications of tsunami sediments. Most submarine landslides are triggered by seafloor earthquakes and natural gas hydrate leakage. The massive sediment transport (MTD) includes the head of the slump, the sliding bottom, the body of the slump and the deposition of turbidity at the later stage of the slump. Basalt and other bedrock weathering provide silicon and magnesium-rich alkaline water, which is beneficial to the formation of chabazite and dolomite; influenced by the tectonic effect, the uplifted denuded zone and the sedimentary zone can transform each other; the nature, supply and handling of the source Or decentralized processes control the sedimentary facies (source and sink system); tectonic activities directly control the spatial variation, topographic change, source region erosion rate and sediment supply rate. Finally, this paper compares the development of sedimentology in China and foreign countries, discusses the development of sedimentology in China.