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Mars - Stratigraphy and gravimetry of Olympus Mons and its aureoleThe relative ages of the major geologic units on and around Olympus Mons are considered, together with an interpretation of the gravity anomaly found for this area. The crater data for this investigation have been acquired and interpreted according to the method outlined by Neukum and Hiller (1981). After careful geological mapping, craters clearly identified as impacts are measured and counted. Crater frequency values per sq km for craters greater than or equal to 1 km ('crater retention ages') are read from the individual counts by fitting the Martian cumulative crater production size-frequency distribution to the individual counts. In addition to age dating, the problem of the origin and nature of the aureole materials using gravity data is addressed. This is done by determining whether the line-of-sight gravity extending from Olympus Mons to the northwestern part of the aureole can be explained by the aureole masses alone or whether additional high-density intrusive masses must be assumed in the aureola area.
Document ID
19830034347
Acquisition Source
Legacy CDMS
Document Type
Reprint (Version printed in journal)
Authors
Hiller, K. H.
(Ludwig-Maximilians-Univ. Munich, Germany)
Neukum, G. P. O.
(Muenchen, Universitaet Munich, Germany)
Janle, P.
(Deutsche Forschungs- und Versuchsanstalt fuer Luft- und Raumfahrt Wessling, Germany)
Guest, J. E.
(Ludwig-Maximilians-Univ. Munich, Germany)
Lopes, R. M. C.
(London, University Observatory, London, United Kingdom)
Date Acquired
August 11, 2013
Publication Date
November 30, 1982
Subject Category
Lunar And Planetary Exploration
Accession Number
83A15565
Distribution Limits
Public
Copyright
Other

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