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Venus records a rich early history.

Authors :
Hansen, V. L.
López, I.
Source :
Geology. Apr2010, Vol. 38 Issue 4, p311-314. 4p. 1 Map.
Publication Year :
2010

Abstract

The distribution and character of Venus's impact craters led to the widely accepted idea that Venus underwent global catastrophic resurfacing ca. 500 Ma, and thus Venus records only a short history, encompassing surface evolution since postulated catastrophic resurfacing. Ribbon tessera terrain (RTT), a structurally distinctive unit, represents some of Venus's oldest surfaces, and is widely accepted as forming prior to postulated global catastrophic resurfacing. We constructed a global geologic map of RTT unit exposures and structural trends using National Aeronautics and Space Administration (NASA) Magellan data. Map relations illustrate that RTT displays planet-scale patterns that, together with altimetry, record a rich geologic history that predates proposed global catastrophic resurfacing. [ABSTRACT FROM AUTHOR]

Details

Language :
English
ISSN :
00917613
Volume :
38
Issue :
4
Database :
Academic Search Index
Journal :
Geology
Publication Type :
Academic Journal
Accession number :
49240620
Full Text :
https://doi.org/10.1130/G30587.1