TY - JOUR
T1 - Water in SNC meteorites
T2 - Evidence for a martian hydrosphere
AU - Karlsson, Haraldur R.
AU - Clayton, Robert N.
AU - Gibson, Everett K.
AU - Mayeda, Toshiko K.
N1 - Copyright:
Copyright 2018 Elsevier B.V., All rights reserved.
PY - 1992
Y1 - 1992
N2 - The Shergotty-Nakhla-Chassigny (SNC) meteorites, purportedly of martian origin, contain 0.04 to 0.4 percent water by weight. Oxygen isotopic analysis can be used to determine whether this water is extraterrestrial or terrestrial. Such analysis reveals that a portion of the water is extraterrestrial and furthermore was not in oxygen isotopic equilibrium with the host rock. Lack of equilibrium between water and host rock implies that the lithosphere and hydrosphere of the SNC parent body formed two distinct oxygen isotopic reservoirs. If Mars was the parent body, the maintenance of two distinct reservoirs may result from the absence of plate tectonics on the planet.
AB - The Shergotty-Nakhla-Chassigny (SNC) meteorites, purportedly of martian origin, contain 0.04 to 0.4 percent water by weight. Oxygen isotopic analysis can be used to determine whether this water is extraterrestrial or terrestrial. Such analysis reveals that a portion of the water is extraterrestrial and furthermore was not in oxygen isotopic equilibrium with the host rock. Lack of equilibrium between water and host rock implies that the lithosphere and hydrosphere of the SNC parent body formed two distinct oxygen isotopic reservoirs. If Mars was the parent body, the maintenance of two distinct reservoirs may result from the absence of plate tectonics on the planet.
UR - http://www.scopus.com/inward/record.url?scp=0026614945&partnerID=8YFLogxK
U2 - 10.1126/science.11537889
DO - 10.1126/science.11537889
M3 - Article
C2 - 11537889
AN - SCOPUS:0026614945
VL - 255
SP - 1409
EP - 1411
JO - Science
JF - Science
SN - 0036-8075
IS - 5050
ER -