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- Publisher Website: 10.1038/s41550-021-01303-5
- Scopus: eid_2-s2.0-85100783707
- WOS: WOS:000617098600003
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Article: Anoxic chemical weathering under a reducing greenhouse on early Mars
Title | Anoxic chemical weathering under a reducing greenhouse on early Mars |
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Authors | |
Issue Date | 2021 |
Publisher | Nature Publishing Group. The Journal's web site is located at https://www.nature.com/natastron/ |
Citation | Nature Astronomy, 2021, v. 5, p. 503-509 How to Cite? |
Abstract | Reduced greenhouse gases such as methane (CH4) and hydrogen (H2) might be the only tenable solution to explain warming of the ancient Martian climate, but direct geological evidence that a reduced atmosphere actually existed on Mars has been lacking. Here we report widespread, strong Fe loss in chemically weathered bedrock sections in the Mawrth Vallis region and other 3–4-billion-year-old terrains on Mars. The separation of Fe from Al in Martian palaeosols, which is comparable to trends observed in palaeosols before the Great Oxidation Event on Earth, suggests that the ancient Martian surface was chemically weathered under a reducing greenhouse atmosphere. Although for different reasons than on Earth, Mars underwent an oxidation event of its own in the late Noachian that forever changed the geological path of the planet. |
Persistent Identifier | http://hdl.handle.net/10722/306380 |
ISSN | 2023 Impact Factor: 12.9 2023 SCImago Journal Rankings: 3.311 |
ISI Accession Number ID |
DC Field | Value | Language |
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dc.contributor.author | Liu, J | - |
dc.contributor.author | Michalski, JR | - |
dc.contributor.author | Tan, W | - |
dc.contributor.author | He, H | - |
dc.contributor.author | YE, B | - |
dc.contributor.author | Xiao, L | - |
dc.date.accessioned | 2021-10-20T10:22:47Z | - |
dc.date.available | 2021-10-20T10:22:47Z | - |
dc.date.issued | 2021 | - |
dc.identifier.citation | Nature Astronomy, 2021, v. 5, p. 503-509 | - |
dc.identifier.issn | 2397-3366 | - |
dc.identifier.uri | http://hdl.handle.net/10722/306380 | - |
dc.description.abstract | Reduced greenhouse gases such as methane (CH4) and hydrogen (H2) might be the only tenable solution to explain warming of the ancient Martian climate, but direct geological evidence that a reduced atmosphere actually existed on Mars has been lacking. Here we report widespread, strong Fe loss in chemically weathered bedrock sections in the Mawrth Vallis region and other 3–4-billion-year-old terrains on Mars. The separation of Fe from Al in Martian palaeosols, which is comparable to trends observed in palaeosols before the Great Oxidation Event on Earth, suggests that the ancient Martian surface was chemically weathered under a reducing greenhouse atmosphere. Although for different reasons than on Earth, Mars underwent an oxidation event of its own in the late Noachian that forever changed the geological path of the planet. | - |
dc.language | eng | - |
dc.publisher | Nature Publishing Group. The Journal's web site is located at https://www.nature.com/natastron/ | - |
dc.relation.ispartof | Nature Astronomy | - |
dc.title | Anoxic chemical weathering under a reducing greenhouse on early Mars | - |
dc.type | Article | - |
dc.identifier.email | Michalski, JR: jmichal@hku.hk | - |
dc.identifier.authority | Michalski, JR=rp02225 | - |
dc.identifier.doi | 10.1038/s41550-021-01303-5 | - |
dc.identifier.scopus | eid_2-s2.0-85100783707 | - |
dc.identifier.hkuros | 327225 | - |
dc.identifier.volume | 5 | - |
dc.identifier.spage | 503 | - |
dc.identifier.epage | 509 | - |
dc.identifier.isi | WOS:000617098600003 | - |
dc.publisher.place | United Kingdom | - |