Unusual magnetic signature of the Hadriaca Patera Volcano: Implications for early Mars

Details Unusual magnetic signature of the Hadriaca Patera Volcano: Implications for early Mars Unusual magnetic signature of the Hadriaca Patera Volcano: Implications for early Mars

Feb 2006

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2006georl..3303202l&link_type=abstract

Geophysical Research Letters, Volume 33, Issue 3, CiteID L03202

Mathematics

Logic

17

Geomagnetism And Paleomagnetism: Magnetic Fabrics And Anisotropy, Planetary Sciences: Solid Surface Planets: Magnetic Fields And Magnetism, Planetary Sciences: Solid Surface Planets: Volcanism (6063, 8148, 8450), Planetary Sciences: Solar System Objects: Mars, Volcanology: Planetary Volcanism (5480, 6063, 8148)

Scientific paper

Typically, Martian volcanoes show either a total absence of crustal magnetism or a local magnetic mimimum. Hadriaca Patera is the only volcano on Mars with a clear positive magnetic anomaly directly over the volcanic edifice, as determined by electron reflection magnetometry. Hadriaca's topography, lava flow crater ages, gravity anomaly, position relative to the Hellas rim and past aqueous environment provide geological constraints on possible scenarios to explain this unusual magnetic signature. The two most probable scenarios are a) pre-Hellas thermoremanent magnetization (TRM) of a deep-seated magma body followed by post-Hellas intrusive partial thermal demagnetization and b) post-Hellas emplacement of the volcano and TRM in a global magnetic field. It is thus likely that Mars had at least one of the following: highland volcanism in pre-Hellas times (older than any datable volcanic feature on the planet) or an active dynamo some time after the Hellas impact.

Affiliated with

Also associated with

No associations

Rating

Unusual magnetic signature of the Hadriaca Patera Volcano: Implications for early Mars does not yet have a rating. At this time, there are no reviews or comments for this scientific paper.

If you have personal experience with Unusual magnetic signature of the Hadriaca Patera Volcano: Implications for early Mars, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Unusual magnetic signature of the Hadriaca Patera Volcano: Implications for early Mars will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFWR-SCP-O-1490471