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: 2020
• 资助国家: 加拿大
• 起止时间: 2020-01-01 至 2021-12-31
• 项目状态: 已结题
• 来源: https://www.nserc-crsng.gc.ca/ase-oro/Details-Detailles_eng.asp?id=715691
• 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开。大陆分裂是长期裂谷演化的一部分，包括纽芬兰东部岩石单元的上升或冷却，以及现在在大浅滩生产油田的沉积盆地的向下埋藏或加热。这项研究计划将侧重于北大西洋源汇模式，包括裂谷侧翼隆起，沉积物从裂谷侧翼转移到沉积盆地，埋藏的油气藏，以更好地了解这些大陆边缘过程沿着纽芬兰和葡萄牙之间的相互作用。所获得的知识将用于确定现代大陆边的特征，然后确定地质记录中的北南极型裂谷实例，包括现在加拿大西部落基山脉地区的古代岩石序列。在北大西洋地区计划进行的研究大多将把联合收割机实地地质观测与实验室砂岩岩石单元测量结合起来，包括生产碳氢化合物储层，以量化裂谷演化的时间、速率和时间-温度模式。补充研究活动将确定育空地区古火山和有关的锌和铅块状硫化物矿点的确切年龄，这些矿点可能是在大陆分裂之后形成的，可能是古代北南极型裂谷系统的特征。纽芬兰纪念大学的学生将接受传统领域和当代实验室为基础的科学方法的培训，这将有助于他们为加拿大和其他地方竞争激烈的大学，政府和行业职位做好准备。预计这些成果将为公共和私营部门伙伴提供关于大陆边的变革性概念，并催生关于地貌演变、具有经济意义的碳氢化合物和贱金属积累的保存以及裂谷期间地表、浅层和深层过程的相互关联性的新的学术和商业研究领域。