Virtual Global Geologic Map to be Released to the Internet

Paul bristolia at yahoo.com
Fri Aug 1 09:03:42 EDT 2008

Geological mapping gets joined up by Jennifer Carpenter
Science reporter, BBC News, July 31, 2008

http://news.bbc.co.uk/2/hi/science/nature/7535379.stm

“The world's geologists have dug out their maps and are
sticking them together to produce the first truly global
resource of the world's rocks.”

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Welcome to OneGeology
http://www.onegeology.org/home.html

"OneGeology is an international initiative of the geological
surveys of the world and a flagship project of the
'International Year of Planet Earth'. Its aim is to create
dynamic geological map data of the world available via
the web. This will create a focus for accessing geological
information for everyone. Thanks to the enthusiasm and
support of participating nations the initiative has
progressed rapidly and geological surveys and the many
users of their data are excited about this ground-breaking
project. These pages provide a background to the
initiative as well as up to date information on its progress.
We invite you to explore the site and we welcome you to
OneGeology. Enjoy your visit!"

Yours,

Paul H.

Online Geological /Geophysical /Topological Map Resources

Paul bristolia at yahoo.com
Thu Oct 4 09:35:31 EDT 2007

Mr EMan wrote:

"Having received some request for more online map
information, here are some tips for locating free on
line maps.(Primarily USA)."

There are some web pages, which provide links for where
free GIS data, including scans of topographic and other
maps, called "DRGs" for various states. They include:

1. "Maps and GIS Resources: United States, by State",
compiled by the University of Oregon Libraries.

http://libweb.uoregon.edu/map/map_section/map_Statedatasets.html

2. Libre Map Project - The purpose of the Libre Map
Project is to aggregate and make digital maps and
related GIS data available for Free. The URLs are:

http://libremap.org/ and http://libremap.org/data/

3. Websites for Digital GIS Data - Stanford University

http://www-sul.stanford.edu/depts/gis/web.html

URLs for International GIS Data:

http://www-sul.stanford.edu/depts/gis/bookmark.htm

4. FINDING UNITED STATES DEMs - “Digital Elevation
Models for the United States can be downloaded at
no cost from several locations on the Internet.”

http://www.visualizationsoftware.com/3dem/finddems.html

5. Guide to Mostly On-Line and Mostly Free U.S. Geospatial
and Attribute Data - University of Arkansas Compilation.

http://libinfo.uark.edu/gis/us.asp

One way of finding digital map data is to search using your
favorite search engine and a combination of the key words
"GIS", "DRG", and the name of the state, for which a person
is looking for data. Most states now have GIS archives,
which contain DRGs of topographic maps and other digital
data.

In terms of geologic maps, a person can go to the
National Geologic Map Database at:

http://ngmdb.usgs.gov/ngmdb/ngm_quicksearch.html

It contains DRGs and other digital copies of various
geologic maps for parts of the United States.

Digital geologic maps accompany the United States
Geological Survey (USGS) publications, which can be
downloaded free from the USGS Publications Warehouse at;

http://pubs.er.usgs.gov/usgspubs/index.jsp?view=adv

and http://pubs.er.usgs.gov/usgspubs/index.jsp

For example, a geological map of a geologic dome, which
was initially mistaken for an impact crater, can be found in
“The geology and mechanics of formation of the Fort Rock
Dome, Yavapai County, Arizona, Professional Paper
no. 1266, at:

http://pubs.er.usgs.gov/usgspubs/pp/pp1266

Yours,

Paul H.