In sci.space.science stated that:
Did large meteor impacts cause volcanoes on the other side Mars?
Here's approximate locations for those regions indicating
a rough correlation as global opposites.
Largest Martian volcanic area: Tharsis-Olympus Mons region
Largest Martian meteor impact: Hellas Impact Basin
Next largest Martian volcanic area: Elysium Mons volcanic region
Next largest Martian meteor impact: Argyre Impact Basin

Followups set to sci.space.science.

This is an old idea. Actually it's Hellas and Alba Patera. I think this was
first brought up by Peterson in 1978:

Title: Antipodal Effects of Major Basin-Forming Impacts on Mars
Authors: Peterson, J. E.
Journal: LUNAR AND PLANETARY SCIENCE IX, PP. 885-886. Abstract. TKO.
Publication Date: 00/1978
[ http://adsbit.harvard.edu/cgi-bin/np...;filetype=.pdf ]

More recent publications on the idea are e.g. the following
and the references therein:

List:
[ http://adsabs.harvard.edu/cgi-bin/np...=YES&version=1 ]

Title: Assessment of antipodal-impact terrains on Mars
Authors: Williams, David A.; Greeley, Ronald
Affiliation: AA(Arizona State University, Tempe, AZ),
AB(Arizona State University, Tempe, AZ)
Journal: Icarus (ISSN 0019-1035), vol. 110, no. 2, p. 196-202
Publication Date: 08/1994
[ http://www.sciencedirect.com/science...9376bb7ea0905b ]

Title: Antipodal Hotspots on Earth: Are Major Deep-Ocean Impacts the Cause?
Authors: Hagstrum, J. T.
Journal: Impact Cratering: Bridging the Gap Between Modeling and
Observations, February 7-9, 2003. LPI Contribution No. 1155.
Houston, TX: Lunar and Planetary Institute, 2003., p.27
Publication Date: 02/2003
[ http://www.lpi.usra.edu/meetings/imp...3/pdf/8046.pdf ]

Cheers,

Jarmo

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Jarmo Korteniemi * http://www.student.oulu.fi/~jkorteni *

Planetology group, Astronomy, University of Oulu, Finland

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