Tectonics, stratigraphy, and natural resource potential of magma-poor rift margins

贫岩浆裂谷边缘的构造、地层和自然资源潜力

• 批准号: RGPIN-2019-05647
• 负责人: Beranek, Luke
• 金额: $ 2.19万
• 依托单位: Memorial University of Newfoundland
• 依托单位国家: 加拿大
• 项目类别: Discovery Grants Program - Individual
• 财政年份: 2022
• 资助国家: 加拿大
• 起止时间: 2022-01-01 至 2023-12-31
• 项目状态: 已结题
• 来源: https://www.nserc-crsng.gc.ca/ase-oro/Details-Detailles_eng.asp?id=751121
• 关键词: Tectonics; stratigraphy; natural; resource; potential

The North Atlantic Ocean developed as a result of continental rift processes that broke the resource-rich Newfoundland margin away from the Iberian Peninsula of southwestern Europe. Continental breakup was part of a long-term rift evolution that included the upward rise or cooling of rock units that underlie eastern Newfoundland and downward burial or heating of sedimentary basins that are now producing oil fields in the Grand Banks. This research program will focus on North Atlantic source-to-sink patterns, including the interplay between rift flank uplift, sediment transfer from rift flank to sedimentary basin, and burial of hydrocarbon reservoirs to better understand these continental margin processes along Newfoundland and Portugal. The knowledge gained will be used to characterize modern continental margins and then subsequently identify North Atlantic-type rift examples in the geological record, including ancient rock successions in what is now the Rocky Mountains region of western Canada. Most of the planned research in the North Atlantic region will combine field-based geological observations with laboratory-based measurements of sandstone rock units, including producing hydrocarbon reservoirs, to quantify the timing, rates, and time-temperature patterns of rift evolution. Complementary research activities will determine the precise age of ancient volcanoes and related zinc and lead massive sulphide occurrences in Yukon, which likely formed after continental breakup and may be telltale features of ancient North Atlantic-type rift systems. Memorial University of Newfoundland students will be trained in both traditional field- and contemporary laboratory-based scientific methods, which will help prepare them for competitive university, government, and industry job positions in Canada and elsewhere. The results are expected to deliver transformative concepts about continental margins to public and private sector partners and spawn new lines of academic and commercial research on landscape evolution, the preservation of economically significant hydrocarbon and base-metal accumulations, and the interconnectedness of surficial-, shallow-, and deep-earth processes during rifting.

北大西洋的形成是大陆裂谷作用的结果，它将资源丰富的纽芬兰边缘与欧洲西南部的伊比利亚半岛分离开来。大陆分裂是长期裂谷演化的一部分，包括纽芬兰东部的岩石单元向上上升或冷却，以及沉积盆地向下埋藏或加热，这些盆地现在正在大浅滩生产油田。该研究项目将重点关注北大西洋的源-汇模式，包括裂谷翼隆升之间的相互作用，从裂谷翼向沉积盆地的沉积物转移，以及油气储层的埋藏，以更好地了解纽芬兰和葡萄牙的这些大陆边缘过程。所获得的知识将用于描述现代大陆边缘的特征，然后在地质记录中确定北大西洋型裂谷的例子，包括现在加拿大西部落基山脉地区的古代岩石序列。北大西洋地区的大部分计划研究将结合现场地质观测和砂岩单元的实验室测量，包括生产油气储层，以量化裂谷演化的时间、速率和时间-温度模式。补充的研究活动将确定育空地区古火山和相关锌铅大量硫化物的确切年龄，这些硫化物可能是在大陆分裂后形成的，可能是古北大西洋型裂谷系统的特征。纽芬兰纪念大学的学生将接受传统领域和现代实验室科学方法的培训，这将有助于他们为加拿大和其他地方竞争激烈的大学、政府和行业工作岗位做好准备。研究结果有望为公共和私营部门的合作伙伴提供有关大陆边缘的革命性概念，并为景观演变、具有重要经济意义的碳氢化合物和贱金属储量的保护以及裂谷过程中地表、浅层和深层地球过程的相互联系等领域的学术和商业研究开辟新的思路。