View a slide show about igneous rocks. The lesson is part of a
series of lessons called "Rocks and Minerals." To see the
complete outline of the lesson go to:
A self-guided tour through igneous rocks with hand sample and outcrop
pictures of different igneous rocks. Page also includes quiz
with answer key.
Find out more about how the chemical composition of magma varies in
igneous rocks. The discussion is not
limited to just extrusive rocks, but includes intrusive rocks as
Read an advanced discussion of igneous rock classification. Site
includes a table
with some of the information in a more condensed form.
4. Classifying Igneous Rocks: Chemical and Mineral Composition
This site provides a good overview of the processes that form and the
properties that determine different types of metamorphic rocks.
It also includes links to related pages on other topics in
View a slide show with color photos and descriptions about plate
tectonics. Site also includes a list of sample lesson
plans, key concepts, references, and activities.
In the Los Angeles Region Seismic Experiment, researchers employed
air-guns and explosions to study earthquake hazards. Setting off
small sources of noise from the Pacific Ocean to the Mojave Desert,
they measured how sound vibrations penetrate or bounce off faults
and substrata and constructed images of the subsurface structure
that may lead to better prediction of earthquakes in Southern
Download state geologic maps at About.com's
Maps - informative review on how to read and interpret
Geologic maps: Regional (two or more states):
The on-line bookstore of
the American Association of Petroleum Geologists
Topographic maps: Local
The United States Geological Survey MapFinder
allows you to order 7.5 minute maps online for $4 per map plus $5
s/h per order.
The United States Geological Survey maintains a list of Map
Dealers. Click on your state to obtain a list of
retailers who sell maps.
The United States Geological Survey National Geologic Map Database
site on How
find topographic maps
TopoZone site allows you
to download topographic maps (including USGS maps) for free, at
various scales (from 1:100,000 to 1:24,000).
MapServer offers free
online viewing of topo, nautical and aeronautical charts plus high
altitude digital ortho quads (nav photos). (www.maptech.com and
General Map Resources:
An excellent list of map resources available online can be found
on the Central Michigan University
Resources for Earth Science and Geography Instruction web
site. Included are links to sites to make maps, as well as
links to free downloadable outline maps, satellite imagery, GPS, and
"Maps" - USGS Earth
Science Information Center, includes general map information, from
how to read maps to how to obtain them. Also includes links to
further information regarding topographic, thematic, planetary maps,
and more. (http://ask.usgs.gov/maps.html)
Geographic (maps and videos): 1-800-962-1643
of the United States" - USGS fact sheet, contains a series of
depictions of the United States, along with information on how to
obtain additional US maps.
the World" - USGS fact sheet, contains a series of world maps,
including outline maps, seismicity maps, and political maps.
Also contains information for ordering more specific world maps.
Maps" - USGS site of a variety of US maps that are available
online, including shaded relief maps, aquifer maps, and further
information on how to order maps not available online.
The Standard Deviants: Geology Parts 1&2 (1998) or Part 1
Eyewitness Handbooks, Rocks and Minerals. Chris Pellant.
1992. New York: Dorling Kindersley Inc.
Miller, R. Heather Macdonald, Linda E. Okland, Steven R. Roof, and
Lauret E. Savoy, 1990, 92 p., paperbound, ISBN 0-918985-86-2. Catalog
#81001. Price $6.00.) from the Society for Sedimentary Geology
Published by the American Geological Institute, this magazine reviews
current issues in the Earth Sciences and can serve as a valuable
supplemental resource for teachers and students alike. Visit the
web site for online
articles and information about obtaining a one-year subscription
(40% discount for AGI Member Society members; 65% discount for
Excellent sources of high-school level articles are in both National
Geographic (which often has maps), and Science News
(describing the most recent and interesting events in scientific