1 / 2

Global Geologic Map of Io

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

ria-mullen
Download Presentation

Global Geologic Map of Io

An Image/Link below is provided (as is) to download presentation Download Policy: Content on the Website is provided to you AS IS for your information and personal use and may not be sold / licensed / shared on other websites without getting consent from its author. Content is provided to you AS IS for your information and personal use only. Download presentation by click this link. While downloading, if for some reason you are not able to download a presentation, the publisher may have deleted the file from their server. During download, if you can't get a presentation, the file might be deleted by the publisher.

E N D

Presentation Transcript

  1. 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 • Io 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 craters • Only 2% of hot spots correlate with Bright Flows => Minimal active sulfur volcanism Published by USGS, available from: http://pubs.usgs.gov/sim/3168/ • Primary results from mapping published in 2011 Icarus paper: 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.

  2. Global Geologic Map of Io Published by USGS, available from: http://pubs.usgs.gov/sim/3168/ • First complete global geologic map of Io, produced using Galileo and Voyager data • Hotspots (sites of volcanic activity) correlated with types of geologic features • Io 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 craters • Only 2% of hot spots correlate with Bright Flows => Minimal active sulfur volcanism • Primary results from mapping published in 2011 Icarus paper: 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.

More Related