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This website, designed for a Sediments and Strata course at the University of California- Davis, contains numerous photographs of turbidite sequences in outcrop. Photos are divided into two categories; turbidites in the Cretaceous Pigeon Point Formation and turbidites in the Cretaceous Great Valley Sequence. Users may also follow a link to other sedimentary photos.
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A part of the United States Geological Survey Coastal and Marine Geology (USGS CMG) Program, this site has a 72 second video clip taken from video 6 (Plate Dynamics) of the 'Earth Revealed' geocscience series produced by Annenberg/
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The definition of asbestos often varies depending on the source or publication in which it is used. This report summarizes asbestos-related definitions taken from a variety of academic, industrial, and regulatory sources. This summary is by no means complete but includes the majority of significant definitions currently applied in the discipline.
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Part
of
the
supporting
resources
for
the
School
of
Earth
Sciences
dynamic
earth
module,
the
-Why
Topography?-
site
discusses
two
models
introduced
in
the
19th
century
that
are
still
used
to
explain
topographic
variations.
These
models
are
the
Pratt
and
Airy
models
of
isostasy.
In
the
Pratt
model,
high
topography
(relative
to
surroundings)
is
due
to
lower
density
whereas
in
the
Airy
model,
high
topography
...
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This
site
has
links
to
two
Flash
animations.
Evolution
of
Basin
and
Range
Landforms
demonstrates
fault
movement
and
subsequent
sediment
erosion
and
deposition
that
create
mountains
and
valleys.
Formation
of
a
Sand
Dune
illustrates
sand
grain
erosion,
transport,
and
deposition
from
the
windward
to
leeward
side
of
a
dune.
These
visualizations
are
from
Chapter
13
(Deserts
and
Wind
Action)
of
the
animations
...
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This
resource
offers
students
review
materials
to
supplement
the
text
Physical
Geology.
Book-specific
quizzes,
case
studies,
objectives,
animations,
and
web-links
enhance
and
test
students'
understanding
of
chapter
concepts.
Additional
features
include
Virtual
Vistas,
where
images
created
from
geospatial
data
sets
accompany
brief
descriptions
of
interesting
or
unique
geologic
settings,
and
interactive
...
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This resource contains :
Animations of Geologic Structures -
http:/
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Unusually
high
incidences
of
asbestos-related
mortality
and
respiratory
disease
in
the
town
of
Libby,
Montana,
have
been
linked
to
amphibole
mineral
fibers
intergrown
with
the
vermiculite
deposits
mined
and
milled
near
the
town
from
1923
to
1990.
Prompted
by
this
discovery,
the
U.S.
Geological
Survey
undertook
an
investigation
of
the
mineral
content
of
other
U.S.
vermiculite
deposits
to
determine
...
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This
Flash
animation
illustrates
aeolian
processes
that
form
terrestrial
arches.
Erosion
exploits
tectonic
fractures
and
results
in
thin
sandstone
walls
that
can
be
penetrated
by
near
ground
windblown
sand
grains.
Over
time,
weathering
and
gravity
causes
arches
to
fall.
Users
can
stop,
play,
fast
forward
and
rewind
the
animation
at
any
time.
This
visualization
is
one
of
several
animations
in
a
series
...
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This animation, listed as 2.10 in Chapter Two in the Essentials of Geology web page, shows how hot spot volcanoes arise. Users may access this and many other animations describing plate tectonic processes from the Chapter Two webpage. Users may also follow links to other chapters in the Essentials of Geology book.
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This
site
has
links
to
three
Flash
animations
about
geologic
processes.
Topics
of
the
simulations
are
sediment
transport
modes,
meander
cut-offs
and
oxbow
lakes,
and
flood
plains
and
stream
terraces.
These
visualizations
are
from
Chapter
10
(Streams
and
Floods)
of
the
animations
section
of
the
Online
Learning
Center
for
the
McGraw-Hill
textbook
Physical
Geology,
9th
edition
(ISBN:
0072402466)
by
Plummer,
...
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