Isotopic Composition of Carbonates in Antarctic Ordinary Chondrites and Miller Range Nakhlites: Insights into Martian Amazonian Aqueous Alteration
The martian surface contains features of ancient fluvial systems. Stable isotope analysis of carbonates that form in aqueous systems can reveal their formation conditions. The Nakhlite meteorites originally formed on Mars 1.3 Ga and were later exposed to aqueous fluids that left behind carbonate min...
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ftnasantrs:oai:casi.ntrs.nasa.gov:20170001754 2023-05-15T13:35:23+02:00 Isotopic Composition of Carbonates in Antarctic Ordinary Chondrites and Miller Range Nakhlites: Insights into Martian Amazonian Aqueous Alteration Niles, P. B. Chapman, P. Evans, M. E. Unclassified, Unlimited, Publicly available March 20, 2017 application/pdf http://hdl.handle.net/2060/20170001754 unknown Document ID: 20170001754 http://hdl.handle.net/2060/20170001754 Copyright, Distribution as joint owner in the copyright CASI Lunar and Planetary Science and Exploration JSC-CN-38620 Lunar and Planetary Science Conference; 20-24 Mar. 2017; The Woodlands, TX; United States 2017 ftnasantrs 2019-07-20T23:39:00Z The martian surface contains features of ancient fluvial systems. Stable isotope analysis of carbonates that form in aqueous systems can reveal their formation conditions. The Nakhlite meteorites originally formed on Mars 1.3 Ga and were later exposed to aqueous fluids that left behind carbonate minerals [1], thus analysis of these carbonates can provide data to understand Amazonian climate conditions on Mars. Carbonates found in the Nakhlite meteorites contain a range of delta(sup 13)C values, which may be either martian carbonates or terrestrial contamination. To better under-stand terrestrial weathering products and martian carbonate formation processes, we conducted a set of carbonate isotope analyses on Antarctic meteorites focusing on Miller Range (MIL) Nakhlites as well as Ordinary Chondrites (OCs) (Figure 1)[1-11] [12]. OCs of petrology type H, L, and LL 3-6 were selected since they are not expected to contain preterrestrial carbonates, yet they have visible evaporite minerals on the fusion crust indicating terrestrial alteration. These cryogenically formed terrestrial carbonates may also provide an analog for cryogenic carbonate formation on Mars. Other/Unknown Material Antarc* Antarctic NASA Technical Reports Server (NTRS) Antarctic Miller Range ENVELOPE(157.000,157.000,-83.167,-83.167) |
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Open Polar |
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NASA Technical Reports Server (NTRS) |
op_collection_id |
ftnasantrs |
language |
unknown |
topic |
Lunar and Planetary Science and Exploration |
spellingShingle |
Lunar and Planetary Science and Exploration Niles, P. B. Chapman, P. Evans, M. E. Isotopic Composition of Carbonates in Antarctic Ordinary Chondrites and Miller Range Nakhlites: Insights into Martian Amazonian Aqueous Alteration |
topic_facet |
Lunar and Planetary Science and Exploration |
description |
The martian surface contains features of ancient fluvial systems. Stable isotope analysis of carbonates that form in aqueous systems can reveal their formation conditions. The Nakhlite meteorites originally formed on Mars 1.3 Ga and were later exposed to aqueous fluids that left behind carbonate minerals [1], thus analysis of these carbonates can provide data to understand Amazonian climate conditions on Mars. Carbonates found in the Nakhlite meteorites contain a range of delta(sup 13)C values, which may be either martian carbonates or terrestrial contamination. To better under-stand terrestrial weathering products and martian carbonate formation processes, we conducted a set of carbonate isotope analyses on Antarctic meteorites focusing on Miller Range (MIL) Nakhlites as well as Ordinary Chondrites (OCs) (Figure 1)[1-11] [12]. OCs of petrology type H, L, and LL 3-6 were selected since they are not expected to contain preterrestrial carbonates, yet they have visible evaporite minerals on the fusion crust indicating terrestrial alteration. These cryogenically formed terrestrial carbonates may also provide an analog for cryogenic carbonate formation on Mars. |
format |
Other/Unknown Material |
author |
Niles, P. B. Chapman, P. Evans, M. E. |
author_facet |
Niles, P. B. Chapman, P. Evans, M. E. |
author_sort |
Niles, P. B. |
title |
Isotopic Composition of Carbonates in Antarctic Ordinary Chondrites and Miller Range Nakhlites: Insights into Martian Amazonian Aqueous Alteration |
title_short |
Isotopic Composition of Carbonates in Antarctic Ordinary Chondrites and Miller Range Nakhlites: Insights into Martian Amazonian Aqueous Alteration |
title_full |
Isotopic Composition of Carbonates in Antarctic Ordinary Chondrites and Miller Range Nakhlites: Insights into Martian Amazonian Aqueous Alteration |
title_fullStr |
Isotopic Composition of Carbonates in Antarctic Ordinary Chondrites and Miller Range Nakhlites: Insights into Martian Amazonian Aqueous Alteration |
title_full_unstemmed |
Isotopic Composition of Carbonates in Antarctic Ordinary Chondrites and Miller Range Nakhlites: Insights into Martian Amazonian Aqueous Alteration |
title_sort |
isotopic composition of carbonates in antarctic ordinary chondrites and miller range nakhlites: insights into martian amazonian aqueous alteration |
publishDate |
2017 |
url |
http://hdl.handle.net/2060/20170001754 |
op_coverage |
Unclassified, Unlimited, Publicly available |
long_lat |
ENVELOPE(157.000,157.000,-83.167,-83.167) |
geographic |
Antarctic Miller Range |
geographic_facet |
Antarctic Miller Range |
genre |
Antarc* Antarctic |
genre_facet |
Antarc* Antarctic |
op_source |
CASI |
op_relation |
Document ID: 20170001754 http://hdl.handle.net/2060/20170001754 |
op_rights |
Copyright, Distribution as joint owner in the copyright |
_version_ |
1766065021940400128 |