一个新的大陆在达马拉带 (纳米比亚) 发挥作用
V Roche1,2, U Geymond3, M Boka-Mene4
1Laboratoire des Fluides Complexes et leurs Réservoirs - IPRA, E2S-UPPA, TotalEnergies, CNRS, Université de Pau et des Pays de l'Adour, UMR5150, Pau, France. vincent.roche@univ-lemans.fr.
Scientific reports
|May 22, 2024
概括
天然 (H2) 气可以从带状铁层中产生,而不仅仅是蛇形化. 纳米比亚的Chuos形成显示了H2生产的证据,表明有一个深层,活跃的生成系统.
科学领域:
- 地质化学 地质化学
- 经济地质学 地质学
- 石化学 石化学是一门学科.
背景情况:
- 蛇形化是大陆天然 (H2) 的首要公认来源.
- 最近的研究表明,古代-古新生代带状铁层 (BIF) 是一个潜在的H2源.
- 与岩石岩石相比,BIF可能提供更高效的H2生成,因为其铁含量较高.
研究的目的:
- 调查纳米比亚沃特伯格盆地的H2排放与底层新新生态BIF (Chuos形成) 之间的关联.
- 为了在Chuos形成中确定产生H2的矿物质.
- 评估变态对BIFs能产生潜力的影响.
主要方法:
- 来自沃特伯格盆地的岩石样本的结构和矿物学分析.
- 确定涉及生产的关键矿物质,如磁铁,生物和 siderite.
- 实地观测以推断地下H2产生系统,陷和水库的存在.
主要成果:
- 结构证据链接报告了H2排放到Neoproterozoic Chuos形成的BIFs.
- 磁石是一种已知的生成H2的矿物质,在Chuos形成中无处不在,与生物和 siderite 一起.
- 变态似乎没有耗尽H2生成所需的基本Fe2+含量.
结论:
- 丘奥斯形成BIFs是天然气生产的重要地质环境.
- 气漏的存在表明,在沃特伯格盆地内有一个活跃的,深层的气生成系统.
- 现场观测表明,可能存在地质陷和蓄积H2的储.
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