Abstract
Research Article| January 01, 1984 SNC meteorites: Are they Martian rocks? Harry Y. McSween, Jr. Harry Y. McSween, Jr. 1Department of Geological Sciences, University of Tennessee, Knoxville, Tennessee 37996 Search for other works by this author on: GSW Google Scholar Author and Article Information Harry Y. McSween, Jr. 1Department of Geological Sciences, University of Tennessee, Knoxville, Tennessee 37996 Publisher: Geological Society of America First Online: 01 Jun 2017 Online ISSN: 1943-2682 Print ISSN: 0091-7613 Geological Society of America Geology (1984) 12 (1): 3–6. https://doi.org/10.1130/0091-7613(1984)12<3:SMATMR>2.0.CO;2 Article history First Online: 01 Jun 2017 Cite View This Citation Add to Citation Manager Share Icon Share Facebook Twitter LinkedIn MailTo Tools Icon Tools Get Permissions Search Site Citation Harry Y. McSween; SNC meteorites: Are they Martian rocks?. Geology 1984;; 12 (1): 3–6. doi: https://doi.org/10.1130/0091-7613(1984)12<3:SMATMR>2.0.CO;2 Download citation file: Ris (Zotero) Refmanager EasyBib Bookends Mendeley Papers EndNote RefWorks BibTex toolbar search Search Dropdown Menu toolbar search search input Search input auto suggest filter your search All ContentBy SocietyGeology Search Advanced Search Abstract SNC (shergottite, nakhlite, chassignite) achondrites are similar in many respects to terrestrial basaltic and ultramafic rocks. Several independent geochemical and petrological characteristics suggest that they formed on Mars. These include young (∼1.3 b.y.) crystallization ages, evidence for a magmatic history too complex for an asteroid, possibility of garnet in the source region, calculations of the magnitude of the gravity field necessary for crystal accumulation by settling, presence of trapped gases similar to the the Martian atmosphere, and other features consistent with what is known about Mars. However, the dynamical difficulties of ejecting meteorites from planetary surfaces are formidable. This content is PDF only. Please click on the PDF icon to access. First Page Preview Close Modal You do not have access to this content, please speak to your institutional administrator if you feel you should have access.
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