Venus volcanism - Initial analysis from Magellan data

Details Venus volcanism - Initial analysis from Magellan data Venus volcanism - Initial analysis from Magellan data

Apr 1991

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1991sci...252..276h&link_type=abstract

Science (ISSN 0036-8075), vol. 252, April 12, 1991, p. 276-288.

Mathematics

Logic

97

Magellan Project (Nasa), Planetary Geology, Venus Surface, Volcanoes, Volcanology, Lava, Petrology, Planetary Crusts, Planetary Evolution, Tectonics, Venus, Volcanism, Spacecraft Observations, Magellan Mission, Surface, Features, Crust, Formation, Origin, Evolution, Intrusion, Extrusion, Shield Volcanoes, Lava Flow, Deposits, Pyroclastics, Morphology, Comparisons, Channels, Resurfacing, Diagrams, Volcanoes, Domes, Coronas, Melts, Composition, Sar Instrument, Altimetry, Emplacement, Eruptions, Tectonics, Lad

Scientific paper

Magellan images confirm that volcanism is widespread and has been fundamentally important in the formation and evolution of the crust of Venus. High-resolution imaging data reveal evidence for intrusion (dike formation and cryptodomes) and extrusion (a wide range of lava flows). Also observed are thousands of small shield volcanoes, larger edifices up to several hundred kilometers in diameter, massive outpourings of lavas, and local pyroclastic deposits. Although most features are consistent with basaltic compositions, a number of large pancake-like domes are morphologically similar to rhyolite-dacite domes on earth. Flows and sinuous channels with lengths of many hundreds of kilometers suggest that extremely high effusion rates or very fluid magmas (perhaps komantiites) may be present. Volcanism is evident in various tectonic settings (coronae, linear extensional and compressional zones, mountain belts, upland rises, highland plateaus, and tesserae). Volcanic resurfacing rates appear to be low (less than 2 cu km/yr) but the significance of dike formation and intrusions, and the mode of crustal formation and loss remain to be established.

Affiliated with

Also associated with

No associations

Rating

Venus volcanism - Initial analysis from Magellan data 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 Venus volcanism - Initial analysis from Magellan data, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Venus volcanism - Initial analysis from Magellan data will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFWR-SCP-O-1794441