Global Geologic Map of Io

download Global Geologic Map of Io

of 2

  • date post

    16-Jan-2016
  • Category

    Documents

  • view

    37
  • download

    2

Embed Size (px)

description

Global Geologic Map of Io. First complete global geologic map of Io , produced using Galileo and Voyager data Hotspots (sites of volcanic activity) correlated with types of geologic features - PowerPoint PPT Presentation

Transcript of Global Geologic Map of Io

  • Global Geologic Map of IoPublished by USGS, available from: http://pubs.usgs.gov/sim/3168/ Williams, D.A., L.P. Keszthelyi, D.A. Crown, J.A. Yff, W.L. Jaeger, P.M. Schenk, P.E. Geissler, T.L. Becker, 2011, Volcanism on Io: Insights from global geologic mapping, Icarus, v. 214, p. 91-112.Primary results from mapping published in 2011 Icarus paper:First complete global geologic map of Io, produced using Galileo and Voyager dataHotspots (sites of volcanic activity) correlated with types of geologic featuresIo has 19 geologic units in 5 classes: Plains (65.8%), Lava flow fields (28.5%), Mountains (3.2%), Patera floors (2.5%). Five types of superposed diffuse deposits cover ~18% of surface: Red (8.6%), White (6.9%), Yellow (2.1%), Black (0.6%), Green (~0.01%)425 paterae cover 2.5% of surface, but correlate with 64% of hot spots => Dominance of silicate volcanism, in the form of lava lakes in volcanic cratersOnly 2% of hot spots correlate with Bright Flows => Minimal active sulfur volcanism

  • Global Geologic Map of IoPublished by USGS, available from: http://pubs.usgs.gov/sim/3168/ Williams, D.A., L.P. Keszthelyi, D.A. Crown, J.A. Yff, W.L. Jaeger, P.M. Schenk, P.E. Geissler, T.L. Becker, 2011, Volcanism on Io: Insights from global geologic mapping, Icarus, v. 214, p. 91-112.Primary results from mapping published in 2011 Icarus paper:First complete global geologic map of Io, produced using Galileo and Voyager dataHotspots (sites of volcanic activity) correlated with types of geologic featuresIo has 19 geologic units in 5 classes: Plains (65.8%), Lava flow fields (28.5%), Mountains (3.2%), Patera floors (2.5%). Five types of superposed diffuse deposits cover ~18% of surface: Red (8.6%), White (6.9%), Yellow (2.1%), Black (0.6%), Green (~0.01%)425 paterae cover 2.5% of surface, but correlate with 64% of hot spots => Dominance of silicate volcanism, in the form of lava lakes in volcanic cratersOnly 2% of hot spots correlate with Bright Flows => Minimal active sulfur volcanism