Document Detail

Flood volcanism in the northern high latitudes of Mercury revealed by MESSENGER.
MedLine Citation:
PMID:  21960625     Owner:  NLM     Status:  In-Process    
MESSENGER observations from Mercury orbit reveal that a large contiguous expanse of smooth plains covers much of Mercury's high northern latitudes and occupies more than 6% of the planet's surface area. These plains are smooth, embay other landforms, are distinct in color, show several flow features, and partially or completely bury impact craters, the sizes of which indicate plains thicknesses of more than 1 kilometer and multiple phases of emplacement. These characteristics, as well as associated features, interpreted to have formed by thermal erosion, indicate emplacement in a flood-basalt style, consistent with x-ray spectrometric data indicating surface compositions intermediate between those of basalts and komatiites. The plains formed after the Caloris impact basin, confirming that volcanism was a globally extensive process in Mercury's post-heavy bombardment era.
James W Head; Clark R Chapman; Robert G Strom; Caleb I Fassett; Brett W Denevi; David T Blewett; Carolyn M Ernst; Thomas R Watters; Sean C Solomon; Scott L Murchie; Louise M Prockter; Nancy L Chabot; Jeffrey J Gillis-Davis; Jennifer L Whitten; Timothy A Goudge; David M H Baker; Debra M Hurwitz; Lillian R Ostrach; Zhiyong Xiao; William J Merline; Laura Kerber; James L Dickson; Jürgen Oberst; Paul K Byrne; Christian Klimczak; Larry R Nittler
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Publication Detail:
Type:  Journal Article; Research Support, U.S. Gov't, Non-P.H.S.    
Journal Detail:
Title:  Science (New York, N.Y.)     Volume:  333     ISSN:  1095-9203     ISO Abbreviation:  Science     Publication Date:  2011 Sep 
Date Detail:
Created Date:  2011-09-30     Completed Date:  -     Revised Date:  -    
Medline Journal Info:
Nlm Unique ID:  0404511     Medline TA:  Science     Country:  United States    
Other Details:
Languages:  eng     Pagination:  1853-6     Citation Subset:  IM    
Department of Geological Sciences, Brown University, Providence, RI 02912, USA.
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