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.

北大西洋的发展是大陆裂谷过程的结果，该过程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。大陆破裂是长期裂谷演化的一部分，其中包括纽芬兰东部岩石单元的向上上升或冷却，以及目前在大浅滩生产油田的沉积盆地的向下埋藏或加热。该研究计划将重点关注北大西洋源-汇模式，包括裂谷侧面隆起、沉积物从裂谷侧面向沉积盆地的转移以及油气藏埋藏之间的相互作用，以更好地了解纽芬兰和葡萄牙沿线的大陆边缘过程。获得的知识将用于描述现代大陆边缘的特征，然后识别地质记录中的北大西洋型裂谷实例，包括现在加拿大西部落基山脉地区的古代岩石序列。北大西洋地区计划进行的大部分研究将结合现场地质观测和实验室对砂岩岩石单元的测量（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代火山以及相关锌和铅块状硫化物矿点的精确年龄，这些矿点可能是在大陆分裂后形成的，并且可能是古代北大西洋型裂谷系统的明显特征。纽芬兰纪念大学的学生将接受传统实地和当代基于实验室的科学方法的培训，这将有助于他们为加拿大和其他地方有竞争力的大学、政府和行业工作职位做好准备。研究结果预计将为公共和私营部门合作伙伴提供关于大陆边缘的变革性概念，并催生关于景观演化、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过程中地表、浅层和深层过程的相互关联性的学术和商业研究的新路线。