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This book describes the historical and ongoing changes in land use and land cover for several regions around the U.S. Issues which are addressed include the types of changes that are occurring now and how fast they are occurring; a comparison of these changes with those in the past; and the consequences for future environmental quality and the habitability of the planet.
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This
site
provides
reports
from
a
British
Geological
Survey
project
which
assessed
the
scale
of
arsenic
contamination
of
groundwater
in
Bangladesh
and
examined
the
possible
source,
mobility
and
fate
of
arsenic
in
local
aquifers.
The
two
reports
include
several
maps
and
photographs,
as
well
as
data
sets
from
the
studies.
The
site
also
features
information
about
a
similar
project
undertaken
in
Ghana.
...
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This
United
States
Geological
Survey
(USGS)
on-line
publication
highlights
the
events
and
aftermath
of
the
June
15,
1991
eruption
of
Mt.
Pinatubo
in
the
Philippines,
which
was
the
second-largest
volcanic
eruption
of
the
20th
century.
This
report
discusses
the
precursors
to
the
1991
eruption
including
the
occurrence
of
earthquakes,
dome
growth
and
steam
emissions.
The
explosive
eruptions
from
June
...
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This
topical
directory
provides
an
alternate
way
to
browse
United
States
Geological
Survey
(USGS)
science
programs
and
activities.
It
is
not
an
exhaustive
list
of
all
USGS
science
topics
but
provides
a
categorization
using
a
thesaurus
of
related
terms
that
will
give
definitions,
links
to
science
content,
and
a
structured
approach
to
discovery.
The
directory
is
divided
into
fourteen
major
topic
headings,
...
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This
set
of
lecture
notes
discusses
the
occurrence
and
tectonic
settings
of
igneous
rocks
near
convergent
plate
margins.
A
discussion
of
petrography
includes
major
element
composition,
calc-alkaline
trends
in
ternary
diagrams,
trace
element
variations,
isotopes
to
distinguish
magma
sources,
and
the
origin
of
igneous
rocks
at
convergent
margins.
The
lecture
notes
include
helpful
illustrations,
maps
...
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These
lecture
notes
present
a
discussion
of
mineralogical
classification
of
granitic
rocks,
definitions
of
hypersolvus
and
subsolvus
granites,
tectonic
and
chemical
classification,
and
depth
of
emplacement
of
granites.
Other
topics
include
pegmatites,
continental
rhyolites,
origin
of
large
volumes
of
silicic
magma,
continental
flood
basalts,
continental
rift
valleys,
evolution
of
rock
suites,
and
...
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The
Sleeping
Mountain
role
playing
scenario
is
part
of
the
Starting
Point
Teaching
Collection.
In
this
scenario,
students
represent
townspeople
whose
lives
and
livelihoods
are
endangered
by
an
active
volcano
which
may
or
may
not
erupt
in
the
near
future.
They
must
debate
whether
to
invest
in
or
to
abandon
their
town.
The
site
outlines
the
roles
and
includes
a
description
of
the
original,
real
volcano
...
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This
site
contains
information
about
Mt.
Baker,
a
volcano
in
the
Cascade
Range.
The
site
features
links
to
all
aspects
of
the
volcano,
including
its
geographic
setting,
and
geologic
and
eruptive
history.
Named
for
third
lieutenant
Joseph
Baker
of
the
Vancouver
exploration,
Mt.
Baker
sits
atop
a
similar
older
volcanic
cone
called
Black
Buttes
volcano,
which
was
active
between
500,000
and
300,000
years
...
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Choosing & Using this resource...
Educational standards associated with this resource:
National Science Education Standards (NSES): Read
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This
report
on
the
effects
of
ozone
depletion
and
ultraviolet
radiation
on
human
health
covers
the
history
of
ozone,
including
an
explanation
of
atmospheric
oxygen;
human
intervention
and
response
to
the
effects
of
chlorofluorocarbons,
or
CFCs;
changes
in
atmospheric
ozone;
good
(stratospheric)
ozone
and
bad
(ground
level)
ozone;
and
the
impact
on
ecosystems.
Effects
on
human
health
cover:
eye
damage,
...
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This United States Geological Survey (USGS) factsheet contains information about US mercury contamination. Issues discussed include how mercury becomes a toxicological problem through bioaccumulation, human effects of mercury toxicity, and levels of atmospheric mercury. Mercury levels in fish are examined to determine how mercury gets into the environment and into the food chain.
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