Is release of martian atmosphere from polar clathrate the cause of nakhlite and ALH84001 Ar/Kr/Xe ratios?

Donald S. Musselwhite, Timothy Swindle

Research output: Contribution to journalArticle

6 Citations (Scopus)

Abstract

Variations in the Ar/Kr/Xe ratios of martian atmosphere trapped in martian meteorites correlate with the time of ejection of these meteorites from Mars. We suggest that these variations reflect actual differences in the Ar/Kr/Xe ratios of the martian atmosphere at the time of ejection of the meteorites. We propose that the variation of the Ar/Kr/Xe ratios of the martian atmosphere is caused by time varying uptake and release of these gases by CO2-H2O clathrate-hydrate in the polar caps. Nakhlites, martian meteorites representing cumulate magmatic rocks, contain evidence of atmosphere from the time of their ejection from Mars. We postulate that the martian atmosphere at that time had lower Ar/Xe and Kr/Xe ratios compared with the modern atmosphere because of the release of these and other gases from polar clathrate, possibly during a period of high (∼60°) obliquity.

Original languageEnglish (US)
Pages (from-to)207-215
Number of pages9
JournalIcarus
Volume154
Issue number1
DOIs
StatePublished - 2001

Fingerprint

clathrate
Martian atmosphere
clathrates
atmospheres
causes
Martian meteorite
ejection
SNC meteorites
meteorite
meteorites
Mars
mars
nakhlites
atmosphere
obliquity
cumulate
gas
polar caps
axioms
gases

ASJC Scopus subject areas

  • Space and Planetary Science
  • Astronomy and Astrophysics

Cite this

Is release of martian atmosphere from polar clathrate the cause of nakhlite and ALH84001 Ar/Kr/Xe ratios? / Musselwhite, Donald S.; Swindle, Timothy.

In: Icarus, Vol. 154, No. 1, 2001, p. 207-215.

Research output: Contribution to journalArticle

@article{c5233adc8b4b4cd2aab188ffdf5a8618,
title = "Is release of martian atmosphere from polar clathrate the cause of nakhlite and ALH84001 Ar/Kr/Xe ratios?",
abstract = "Variations in the Ar/Kr/Xe ratios of martian atmosphere trapped in martian meteorites correlate with the time of ejection of these meteorites from Mars. We suggest that these variations reflect actual differences in the Ar/Kr/Xe ratios of the martian atmosphere at the time of ejection of the meteorites. We propose that the variation of the Ar/Kr/Xe ratios of the martian atmosphere is caused by time varying uptake and release of these gases by CO2-H2O clathrate-hydrate in the polar caps. Nakhlites, martian meteorites representing cumulate magmatic rocks, contain evidence of atmosphere from the time of their ejection from Mars. We postulate that the martian atmosphere at that time had lower Ar/Xe and Kr/Xe ratios compared with the modern atmosphere because of the release of these and other gases from polar clathrate, possibly during a period of high (∼60°) obliquity.",
author = "Musselwhite, {Donald S.} and Timothy Swindle",
year = "2001",
doi = "10.1006/icar.2001.6669",
language = "English (US)",
volume = "154",
pages = "207--215",
journal = "Icarus",
issn = "0019-1035",
publisher = "Academic Press Inc.",
number = "1",

}

TY - JOUR

T1 - Is release of martian atmosphere from polar clathrate the cause of nakhlite and ALH84001 Ar/Kr/Xe ratios?

AU - Musselwhite, Donald S.

AU - Swindle, Timothy

PY - 2001

Y1 - 2001

N2 - Variations in the Ar/Kr/Xe ratios of martian atmosphere trapped in martian meteorites correlate with the time of ejection of these meteorites from Mars. We suggest that these variations reflect actual differences in the Ar/Kr/Xe ratios of the martian atmosphere at the time of ejection of the meteorites. We propose that the variation of the Ar/Kr/Xe ratios of the martian atmosphere is caused by time varying uptake and release of these gases by CO2-H2O clathrate-hydrate in the polar caps. Nakhlites, martian meteorites representing cumulate magmatic rocks, contain evidence of atmosphere from the time of their ejection from Mars. We postulate that the martian atmosphere at that time had lower Ar/Xe and Kr/Xe ratios compared with the modern atmosphere because of the release of these and other gases from polar clathrate, possibly during a period of high (∼60°) obliquity.

AB - Variations in the Ar/Kr/Xe ratios of martian atmosphere trapped in martian meteorites correlate with the time of ejection of these meteorites from Mars. We suggest that these variations reflect actual differences in the Ar/Kr/Xe ratios of the martian atmosphere at the time of ejection of the meteorites. We propose that the variation of the Ar/Kr/Xe ratios of the martian atmosphere is caused by time varying uptake and release of these gases by CO2-H2O clathrate-hydrate in the polar caps. Nakhlites, martian meteorites representing cumulate magmatic rocks, contain evidence of atmosphere from the time of their ejection from Mars. We postulate that the martian atmosphere at that time had lower Ar/Xe and Kr/Xe ratios compared with the modern atmosphere because of the release of these and other gases from polar clathrate, possibly during a period of high (∼60°) obliquity.

UR - http://www.scopus.com/inward/record.url?scp=0035720513&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=0035720513&partnerID=8YFLogxK

U2 - 10.1006/icar.2001.6669

DO - 10.1006/icar.2001.6669

M3 - Article

AN - SCOPUS:0035720513

VL - 154

SP - 207

EP - 215

JO - Icarus

JF - Icarus

SN - 0019-1035

IS - 1

ER -