D/H ratios of the inner Solar System

Hallis, L. (2017) D/H ratios of the inner Solar System. Philosophical Transactions of the Royal Society A: Mathematical, Physical and Engineering Sciences, 375(2094), 20150390. (doi:10.1098/rsta.2015.0390) (PMID:28416726) (PMCID:PMC5394254)

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Abstract

The original hydrogen isotope (D/H) ratios of different planetary bodies may indicate where each body formed in the Solar System. However, geological and atmospheric processes can alter these ratios through time. Over the past few decades, D/H ratios in meteorites from Vesta and Mars, as well as from S- and C-type asteroids, have been measured. The aim of this article is to bring together all previously published data from these bodies, as well as the Earth, in order to determine the original D/H ratio for each of these inner Solar System planetary bodies. Once all secondary processes have been stripped away, the inner Solar System appears to be relatively homogeneous in terms of water D/H, with the original water D/H ratios of Vesta, Mars, the Earth, and S- and C-type asteroids all falling between δD values of −100‰ and −590‰. This homogeneity is in accord with the ‘Grand tack’ model of Solar System formation, where giant planet migration causes the S- and C-type asteroids to be mixed within 1 AU to eventually form the terrestrial planets.

Item Type:Articles
Status:Published
Refereed:Yes
Glasgow Author(s) Enlighten ID:Hallis, Dr Lydia
Authors: Hallis, L.
College/School:College of Science and Engineering > School of Geographical and Earth Sciences
Journal Name:Philosophical Transactions of the Royal Society A: Mathematical, Physical and Engineering Sciences
Publisher:Royal Society
ISSN:1364-503X
ISSN (Online):1471-2962
Published Online:17 April 2017
Copyright Holders:Copyright © 2017 The Author
First Published:First published in Royal Society of London Philosophical Transactions A: Mathematical, Physical and Engineering Sciences 375(2094):20150390
Publisher Policy:Reproduced under a Creative Commons License

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Project CodeAward NoProject NamePrincipal InvestigatorFunder's NameFunder RefLead Dept
670421Microscopy summer school for GCSE studentsLydia HallisScience & Technology Facilities Council (STFC)ST/M002268/1SCHOOL OF GEOGRAPHICAL & EARTH SCIENCES
697411A journey from the solar nebula to planetary bodies: cycling of heat, water and organicsMartin LeeScience & Technologies Facilities Council (STFC)ST/N000846/1SCHOOL OF GEOGRAPHICAL & EARTH SCIENCES