Summary of Field Evidence for Thermal erosion by Channelized Archean and Proterozoic Komatiite Lava Flows

Details Summary of Field Evidence for Thermal erosion by Channelized Archean and Proterozoic Komatiite Lava Flows Summary of Field Evidence for Thermal erosion by Channelized Archean and Proterozoic Komatiite Lava Flows

Mar 1996

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1996lpi....27.1435w&link_type=abstract

Lunar and Planetary Science, volume 27, page 1435

Mathematics

Basalt, Erosion: Thermal, Field Evidence, Komatiites, Lava Channels

Scientific paper

Thermal erosion is inferred to have occurred during the emplacement of several types of terrestrial and lunar lava flows, to have possibly generated some of the martian channels and venusian canali, to have formed embayments in some Archean and Proterozoic greenstone belts , and to have generated most magmatic sulfide deposits. Hot, low-viscosity komatiite lavas may be the best analogs for some planetary lavas, and studies of the morphologies and geometries of the embayments in Archean and Proterozoic greenstone belts therefore provide the best means to calibrate mathematical models of thermal erosion. The study of thermal erosion by Archean and Proterozoic komatiites is complicated by the large scale of the flows, superimposed heterogeneous structural disruption and pervasive metamorphism, and sporadic exposure, which make determinations of vent locations and flow geometries virtually impossible. Nevertheless, igneous textures are often preserved and studies of surface outcrops, underground exposures, and drill cores can provide much data on the morphologies and compositions of komatiite lava flows and associated thermal erosion features.

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