NDLI: Martian crater counts on elysium mons

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Martian crater counts on elysium mons

Content Provider	NASA Technical Reports Server (NTRS)
Author	McBride, Kathleen Barlow, Nadine G.
Copyright Year	1990
Description	Without returned samples from the Martian surface, relative age chronologies and stratigraphic relationships provide the best information for determining the ages of geomorphic features and surface regions. Crater-size frequency distributions of six recently mapped geological units of Elysium Mons were measured to establish their relative ages. Most of the craters on Elysium Mons and the adjacent plains units are between 500 and 1000 meters in diameter. However, only craters 1 km in diameter or larger were used because of inadequate spatial resolution of some of the Viking images and to reduce probability of counting secondary craters. The six geologic units include all of the Elysium Mons construct and a portion of the plains units west of the volcano. The surface area of the units studied is approximately 128,000 sq km. Four of the geologic units were used to create crater distribution curves. There are no craters larger than 1 km within the Elysium Mons caldera. Craters that lacked raised rims, were irregularly shaped, or were arranged in a linear pattern were assumed to be endogenic in origin and not counted. A crater frequency distribution analysis is presented.
File Size	969742
Page Count	14
File Format	PDF
Alternate Webpage(s)	http://archive.org/details/NASA_NTRS_Archive_19910013683
Archival Resource Key	ark:/13960/t4fn62x2n
Language	English
Publisher Date	1990-01-01
Access Restriction	Open
Subject Keyword	Lunar And Planetary Exploration Geochronology Calderas Geomorphology Planetary Geology Mars Craters Mars Planet Mars Photographs Volcanology Mars Surface Stratigraphy Density Distribution Mars Volcanoes Ntrs Nasa Technical Reports Server (ntrs) Nasa Technical Reports Server Aerodynamics Aircraft Aerospace Engineering Aerospace Aeronautic Space Science
Content Type	Text
Resource Type	Technical Report

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