Organic Geochemistry and Marine Research

有机地球化学和海洋研究

• 批准号: CRC-2021-00133
• 负责人: Ventura, Gregory
• 金额: $ 7.29万
• 依托单位: Saint Mary's University
• 依托单位国家: 加拿大
• 项目类别: Canada Research Chairs
• 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=755028
• 关键词: Organic; Geochemistry; Marine; Research

Presented is a two-fold research strategy of 4 applied and 2 blue skies projects that are currently underway and planned for the coming five-year term. These projects aim to improve technologies for oil and gas exploration, seepage detection and remediation as well as answer fundamental questions about the nature of our biosphere and its interaction with the geosphere.The applied research initiatives are associated with hydrocarbon detection and environmental impact studies for offshore Nova Scotia. For this portion of the program, an environmental lipidomics survey (project 1) is being conducted to develop lipid-based bioassays for deep marine hydrocarbon seep detection with the aim of de-risking offshore oil and gas exploration along the Scotian slope. In tandem with this is a clumped' isotopologues of methane survey (project 2) of gases collected from prospective seep sites along the slope that aims to find the generating source rock intervals within the underlying basin with further evaluations on how these novel isotope signals may become modified by microbial interactions with migrating gases. These two projects will be followed-up with a methane emissions survey (project 3) of abandoned wells on the Scotian shelf to determine if leakage of the casing and well bores is occurring and to then evaluate the associated environmental impacts this may have to the ocean and atmosphere. The final applied research project (project 4) will resolve the type, abundance, and molecular hydrocarbon composition of sedimentary organic matter in targeted strata with an aim of producing multi-molecular hydrocarbon fingerprints that can be used to predict the broader-level sequence stratigraphic position of the associated rock units within a basin.Blue-skies projects are associated with astrobiological and deep time preservation studies that aim to resolve the preservation potential of organic matter hosted in unusual geological conditions. The first project (project 5) is examining polar lipids extracted from biofilters that have been stationed for over one year within drill holes at terrestrial serpentinized springs in the Tablelands of Newfoundland and the Cedars, in California, USA to interpret their microbiological diversity and to establish the modes of metabolism for these communities. Lastly, project 6 will resolve the mineralogical associations to which archaeal lipid are found in 2.6 Ga Late Archean argillites of the Abitibi Subprovince of Canada.

提出的是一项针对4个应用的研究策略，目前正在进行4个应用和2个蓝天项目，并计划在未来的五年任期内进行。这些项目旨在改善石油和天然气勘探，渗漏检测和补救的技术，并回答有关我们生物圈性质及其与地球际相互作用的基本问题。应用研究计划与碳氢化合物检测和环境影响研究有关新斯科舍省。在该计划的这一部分中，正在进行一项环境脂质组学调查（项目1），以开发基于脂质的生物测定，以进行深海碳氢化合物渗水检测，目的是在斯科特坡上脱离风险的海上石油和天然气勘探。 与此同时，是甲烷调查（项目2）的集团同位素（项目2），沿着坡度的前瞻性渗水站点收集的气体，旨在在基础盆地内找到产生的源岩石间隔，并进一步评估这些新型同位素信号通过与迁移气体的微生物相互作用进行修饰。这两个项目将在斯科舍架上进行的甲烷排放调查（项目3）进行，以确定是否发生了壳体和井孔的泄漏，然后评估该海洋可能对海洋产生的相关环境影响和气氛。最终应用研究项目（项目4）将解决目标层中沉积有机物物质的类型，丰度和分子烃组成，目的是产生可用于预测更广泛级别序列地层摄影位置的多分子烃指纹在盆地内的相关岩石单元中，蓝冰科项目与天文学和深度保存研究有关，旨在解决在异常地质条件下托管有机物的保护潜力。第一个项目（项目5）正在研究从驻扎在纽芬兰和雪松的陆地蛇形弹簧和加利福尼亚州的雪松的钻孔中，在钻孔中驻扎了一年多的生物过滤器的极性脂质。这些社区的新陈代谢模式。最后，项目6将解决加拿大Abitibi Subprovince的2.6 GA后期Argillites中发现古细胞脂质的矿物学关联。