Sedimentation in the Tide-Wave and Tide-River Transition Zones

潮浪和潮河过渡带的沉积

• 批准号: 7553-2012
• 负责人: Dalrymple, Robert
• 金额: $ 2.33万
• 依托单位: Queen's University
• 依托单位国家: 加拿大
• 项目类别: Discovery Grants Program - Individual
• 财政年份: 2016
• 资助国家: 加拿大
• 起止时间: 2016-01-01 至 2017-12-31
• 项目状态: 已结题
• 来源: https://www.nserc-crsng.gc.ca/ase-oro/Details-Detailles_eng.asp?id=592878
• 关键词: Sedimentation; Tide; Wave; River; Transition

The interface between the land and the sea is one of the most complex areas on earth. The deposits formed here are extremely important because they host a significant fraction of the hydrocarbon reserves in Canada and the world, including the world-famous McMurray Oil Sands of northern Alberta. I propose to investigate the deposits of this crucial interface, using an approach that breaks out of the "end-member syndrome" that has characterized much of the previous work on coastal environments, to investigate the complex interactions between the three fundamental processes that control the dynamics these environments and the nature of the facies and their architectural organization within ancient sedimentary successions. Rather than focusing on tide-dominated environments as my past work has done, I propose to explore the interactions between tidal currents and waves on the one hand, and river flow on the other. These transitional zones are widespread on the present-day world, and their deposits should be equally abundant in ancient sedimentary basins, and yet they are incompletely documented because of the scarcity of models for what these deposits look like. The proposed work consists of a set of modern and ancient deposits that have been selected because they are either known or believed to illustrate the process transitions that are the focus of this study, and because they have served as important reference point for interpretations and/or are superbly exposed, thereby allowing unparalleled opportunities for the study of the 3-dimensional architecture of the deposits. Study areas where the river-tide transition will be studied are: the Rio Guayas and its tributaries, Ecuador; the Lajas Fm., Neuquén Basin, Argentina; the Neslen Fm., Utah; and as yet to be chosen deposit in the Spanish Pyrenees. This work will be supplemented by ongoing work on the McMurray Fm., Alberta. The wave-tide transition will be investigated in the Lajas Fm., Argentina; the Sego Sandstone, Utah; and the Haystack Mtns. Fm., Wyoming. This research program will significantly improve the ability to create sophisticated paleoenvironmental and paleoclimatic reconstructions, and to extract hydrocarbons more efficiently.

陆地和海洋之间的界面是地球上最复杂的区域之一。这里形成的矿床非常重要，因为它们拥有加拿大和世界上相当大一部分的碳氢化合物储量，包括世界著名的北方阿尔伯塔的麦克默里油砂。我建议调查存款的这个重要的接口，使用的方法，打破了“端员综合征”的特点，以前的工作对沿海环境，调查复杂的相互作用的三个基本过程，控制这些环境的动态和性质的相和他们的建筑组织在古代沉积序列。我不像我过去的工作那样关注潮汐主导的环境，我建议一方面探索潮流和波浪之间的相互作用，另一方面探索河流流动。这些过渡带在当今世界上分布广泛，它们的沉积物在古代沉积盆地中应该同样丰富，但由于缺乏这些沉积物的模型，它们的记录并不完整。拟议的工作包括一组现代和古代的存款，已被选中，因为他们要么是已知的或相信说明的过程中的过渡，是这项研究的重点，因为他们已作为重要的参考点的解释和/或超级暴露，从而允许无与伦比的机会，研究的三维结构的存款。将研究河流潮汐转换的研究区域有：厄瓜多尔的里约瓜亚斯及其支流;拉哈斯组，内乌肯盆地，阿根廷;内斯伦组，犹他州;西班牙比利牛斯山脉的存款尚未选定。这项工作将得到正在进行的麦克默里组工作的补充，阿尔伯塔。将在Lajas组研究波浪-潮汐转换，阿根廷、犹他州的塞戈砂岩和干草堆山脉。FM.，怀俄明州。这项研究计划将大大提高创建复杂的古环境和古气候重建的能力，并更有效地提取碳氢化合物。