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: 2015
• 资助国家: 加拿大
• 起止时间: 2015-01-01 至 2016-12-31
• 项目状态: 已结题
• 来源: https://www.nserc-crsng.gc.ca/ase-oro/Details-Detailles_eng.asp?id=568519
• 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.

陆地与海洋的交界处是地球上最复杂的区域之一。 这里形成的矿床极其重要，因为它们蕴藏着加拿大和世界碳氢化合物储量的很大一部分，其中包括世界著名的阿尔伯塔省北部麦克默里油砂。 我建议研究这个关键界面的沉积物，采用一种突破“端员综合症”的方法，这种方法是以前沿海环境研究的特点，研究控制这些环境动态的三个基本过程之间的复杂相互作用，以及古代沉积序列中相的性质及其建筑组织。 我不像我过去的工作那样关注潮汐主导的环境，而是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量之间的相互作用。 这些过渡带在当今世界上很普遍，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。 拟议的工作由一组现代和古代矿床组成，之所以选择这些矿床，是因为它们已知或被认为能够说明本研究重点的过程转变，并且因为它们已成为解释的重要参考点和/或被完美暴露，从而为研究矿床的三维结构提供了无与伦比的机会。 将研究河流潮汐转变的研究区域有：厄瓜多尔瓜亚斯河及其支流；阿根廷内乌肯盆地拉哈斯组；犹他州内斯伦峡湾；尚未选择西班牙比利牛斯山脉的矿床。 这项工作将得到艾伯塔省麦克默里组正在进行的工作的补充。 将在阿根廷拉哈斯组研究波潮转变；犹他州塞戈砂岩；和干草堆山。调频，怀俄明州。 该研究计划将显着提高创建复杂的古环境和古气候重建以及更有效地提取碳氢化合物的能力。