A metamorphic origin for Europa's ocean
| dc.contributor.author | Daswani, Mohit Melwani | en_ZA |
| dc.contributor.author | Vance, Steven D. | en_Za |
| dc.contributor.author | Mayne, Matthew J. | en_ZA |
| dc.contributor.author | Glein, Christopher R. | en_ZA |
| dc.date.accessioned | 2023-04-18T12:32:17Z | |
| dc.date.available | 2023-04-18T12:32:17Z | |
| dc.date.issued | 2021 | |
| dc.description | CITATION: Melwani Daswani, M., Vance, S. D., Mayne, M. J., & Glein, C. R. (2021). A metamorphic origin for Europa's Ocean. Geophysical Research Letters, 48, e2021GL094143. doi.10.1029/2021GL094143 | en_ZA |
| dc.description | The original publication is available at: wiley.com | en_ZA |
| dc.description.abstract | Europa likely contains an iron-rich metal core. For it to have formed, temperatures within Europa reached urn:x-wiley:00948276:media:grl62926:grl62926-math-00011250 K. Going up to that temperature, accreted chondritic minerals — for example, 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 urn:x-wiley:00948276:media:grl62926:grl62926-math-0002 atmosphere. No late delivery of cometary water was necessary. Contrasting with prior work, urn:x-wiley:00948276:media:grl62926:grl62926-math-0003 could be the most abundant solute in the ocean, followed by urn:x-wiley:00948276:media:grl62926:grl62926-math-0004, urn:x-wiley:00948276:media:grl62926:grl62926-math-0005, and urn:x-wiley:00948276:media:grl62926:grl62926-math-0006. However, gypsum precipitation going from the seafloor to the ice shell decreases the dissolved S/Cl ratio, such that Clurn:x-wiley:00948276:media:grl62926:grl62926-math-0007S 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. | en_ZA |
| dc.description.version | Publisher’s version | en_ZA |
| dc.format.extent | 14 pages : illustrations | en_ZA |
| dc.identifier.citation | Melwani Daswani, M., Vance, S. D., Mayne, M. J., & Glein, C. R. (2021). A metamorphic origin for Europa's Ocean. Geophysical Research Letters, 48, e2021GL094143. doi.10.1029/2021GL094143 | en_ZA |
| dc.identifier.issn | 0094-8276 (print) | en_ZA |
| dc.identifier.issn | 1944-8007 (online) | en_ZA |
| dc.identifier.uri | http://hdl.handle.net/10019.1/126795 | |
| dc.language.iso | en_ZA | en_ZA |
| dc.publisher | John Wiley & Sons, Inc | en_ZA |
| dc.rights.holder | Authors retain copyright | en_ZA |
| dc.subject | Metamorphic -- Europa | en_ZA |
| dc.subject | Carbon cycle (Biogeochemistry) | en_ZA |
| dc.subject | Metamorphism (Geology) -- Europa's ocean | en_ZA |
| dc.subject | Water temperature -- Europa | en_ZA |
| dc.subject | Carbonate minerals | en_ZA |
| dc.title | A metamorphic origin for Europa's ocean | en_ZA |
| dc.type | Article | en_ZA |