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Large‐scale volcanism associated with coronae on Venus: Implications for formation and evolution
Author(s) -
Magee Roberts Kari,
Head James W.
Publication year - 1993
Publication title -
geophysical research letters
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 2.007
H-Index - 273
eISSN - 1944-8007
pISSN - 0094-8276
DOI - 10.1029/93gl01484
Subject(s) - volcanism , geology , venus , geophysics , mantle (geology) , diapir , plume , lithosphere , earth science , hotspot (geology) , mantle convection , volcanology , mantle plume , upwelling , rift , volcano , paleontology , tectonics , astrobiology , physics , oceanography , thermodynamics
Large‐scale volcanism, in the form of areally extensive flow fields, is a previously unrecognized important aspect of the evolution of at least 41% of all coronae on Venus. The timing and scale of many coronae flow fields is consistent with an origin due to the arrival and pressure‐release melting of material in the head of a mantle plume or diapir. The production of voluminous amounts of volcanism at some coronae is proposed to be the result of larger plume size and/or the intersection of mantle upwellings with regions of lithospheric extension and rifting.