We apologize in advance if you have received duplicates of this message
from several lists.
A new geospatial dataset, the Alaska PaleoGlacier Atlas, is now
available online:
http://instaar.colorado.edu/QGISL/ak_paleoglacier_atlas
The APG Atlas is a GIS-based summary of Pleistocene glaciation across
Alaska. Visit the website to view statewide and regional maps depicting
the extent of glaciers during the late Wisconsin glaciation (i.e. the
Last Glacial Maximum, about 20,000 years ago), as well as the maximum
extent reached during the last 3 million years by valley glaciers, ice
caps, and the northwestern Cordilleran Ice Sheet. Deposition and
erosion by glaciers in the recent geologic past have greatly influenced
Alaska's landscapes and ecosystems.
Feel free to download print- and screen-resolution versions of featured
maps. Also available are shapefiles and coverages for use in Geographic
Information Systems (GIS).
See:
http://instaar.colorado.edu/QGISL/ak_paleoglacier_atlas
A broadly collaborative effort, the atlas combines glacial-geologic
information from 26 publications and 42 source maps, including
previously unpublished mapping. Further contributions are encouraged,
and the atlas will be periodically updated. Our goal is a comprehensive
and consistent overview of former glacier limits across Alaska. Our
hope is to facilitate outreach, education, and interdisciplinary
research in the fields of geology, geography, biology, archeology, and
natural history.
William Manley (University of Colorado; William.Manley [at] colorado.edu)
Darrell Kaufman (Northern Arizona University; Darrell.Kaufman [at] nau.edu)
With contributions from: T.A. Ager, Y. Axford, N. Balascio, J.E. Beget,
J.P. Briner, P. Carrara, T.D. Hamilton, D.J. Lubinski, R.D. Reger, H.R.
Schmoll, R.M. Thorson, C.F. Waythomas, F.R. Weber, A. Werner, and F.H.
Wilson.