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| Fundamental Study of Processes Associated with Stable Trapping and Potential Leakage of Sequestrated Carbon Dioxide in Deep Geologic Formations | |
| 项目编号 | 1045282 |
| Tissa Illangasekare | |
| 项目主持机构 | Colorado School of Mines |
| 开始日期 | 2011 |
| 结束日期 | 2014-12-31 |
| 英文摘要 | Geochemical proxies for the oxygenation of and metal cycling in the hydrosphere, such as Mo, U, Re-Os, S and Fe isotopes can be used to establish the spatiotemporal distribution of these elements in Paleo-oceans, which is inextricably linked to the evolution of life on Earth, by using well-dated and well-preserved marine sediments. However, to date, only little appropriate material is available especially for the Archaean. The Paleo- to Meso-Archaean Barberton Greenstone Belt, South Africa, represents the rosetta stone of research into the earliest Earth processes and conditions because it consists of little metamorphosed volcano-sedimentary successions. However, the primary (bio)geochemical signatures, especially of redox-sensitive elements, of outcrop samples may be compromised. Therefore, it is imperative to obtain continuous sections of unaltered, fresh material through drilling. Using drill core material from the Barberton Drilling Project, we seek funding to constrain (1) the metal sources, redox conditions and potential participation of biota in the Paleo-ocean, using Re-Os-Fe isotopes and platinum-group element systematics of organic-rich stratigraphic layers, banded iron formations and cherts deposited in the shallow to deep marine environment and (2) PGE and Os isotope composition of felsic volcanic rocks, which represent the continental sources of erosion products subsequently deposited on the ocean floor. Application of state-of-the-art geochemical tools to prospective sample material, strategic collaborations with other institutes and integration of data using multiple proxies offer a promising approach to successfully address these questions. |
| 学科分类 | 08 - 地球科学 |
| 资助机构 | US-NSF |
| 项目经费 | 327343 |
| 项目类型 | Continuing grant |
| 国家 | US |
| 语种 | 英语 |
| 文献类型 | 项目 |
| 条目标识符 | http://gcip.llas.ac.cn/handle/2XKMVOVA/75845 |
| 推荐引用方式 GB/T 7714 | Tissa Illangasekare.Fundamental Study of Processes Associated with Stable Trapping and Potential Leakage of Sequestrated Carbon Dioxide in Deep Geologic Formations.2011. |
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