Global S&T Development Trend Analysis Platform of Resources and Environment
DOI | 10.1029/2021GL094143 |
A metamorphic origin for Europa's ocean | |
Mohit Melwani Daswani; Steven D. Vance; Matthew J. Mayne; Christopher R. Glein | |
2021-08-25 | |
发表期刊 | Geophysical Research Letters |
出版年 | 2021 |
英文摘要 | Europa likely contains an iron-rich metal core. For it to have formed, temperatures within Europa reached 1250 K. At that temperature, accreted chondritic minerals—e.g., carbonates and phyllosilicates—would partially devolatilize. Here, we compute the amounts and compositions of exsolved volatiles. We find that volatiles released from the interior would have carried solutes, redox-sensitive species, and could have generated a carbonic ocean in excess of Europa's present-day hydrosphere, and potentially an early atmosphere. No late delivery of cometary water was necessary. Contrasting with prior work, could be the most abundant solute in the ocean, followed by , , and . However, gypsum precipitation going from the seafloor to the ice shell decreases the dissolved S/Cl ratio, such that ClS at the shallowest depths, consistent with recently inferred endogenous chlorides at Europa's surface. Gypsum would form a 3–10 km thick sedimentary layer at the seafloor. |
领域 | 气候变化 |
URL | 查看原文 |
引用统计 | |
文献类型 | 期刊论文 |
条目标识符 | http://119.78.100.173/C666/handle/2XK7JSWQ/336661 |
专题 | 气候变化 |
推荐引用方式 GB/T 7714 | Mohit Melwani Daswani,Steven D. Vance,Matthew J. Mayne,et al. A metamorphic origin for Europa's ocean[J]. Geophysical Research Letters,2021. |
APA | Mohit Melwani Daswani,Steven D. Vance,Matthew J. Mayne,&Christopher R. Glein.(2021).A metamorphic origin for Europa's ocean.Geophysical Research Letters. |
MLA | Mohit Melwani Daswani,et al."A metamorphic origin for Europa's ocean".Geophysical Research Letters (2021). |
条目包含的文件 | 条目无相关文件。 |
除非特别说明,本系统中所有内容都受版权保护,并保留所有权利。
修改评论