Below is a selected list of links to geologic
and landscape features in national parks.
(Hit the "back" key
to return to this list.) Note: search the Thumbnail Gallery Index for more images!
Igneous Rocks
granite [1],[2],[3]
rhyolite(tuff) [1]
basalt [1],[2],[3]
Sedimentary Rocks
conglomerate [1],[2]
breccia [1]
cross-bedded sandstone [1],[2],[3],[4],[5],[6],[7],[8]
sandstone [1],[2],[3],[4]
shale and mudstone [1],[2],[3],[4],[5]
limestone (and dolomite) [1],[2],[3],[4],[5],[6],[7],[8]
ribbon chert [1],[2]
travertine [1],[2]
gypsum [1],[2]
salt [1],[2]
layered sedimentary rocks [1],[2],[3],[4],[5],[6],[7],[8],[9],[10],[11],[12],[13],[14]
Metamorphic Rocks
marble [1],[2],[3]
greenstone [1]
schist [1]
serpentinite [1],[2],[3],[4]
gneiss [1],[2]
migmatite (gneiss) [1]
Volcanic Features
cinder cones [1],[2],[3],[4],[5],[6],[7],[8]
flowing "red hot" lava [1],[2],[3],[4],[5],[6]
lava flows [1],[2],[3],[4],[5],[6],[7],[8]
-- a'a flow [1],[2],[3],[4]
-- pahoe'hoe flow [1],[2],[3]
lava tubes [1],[2],[3],[4],[5],[6],[7],[8],[9],[10],[11]
shield cones [1],[2],[3],[4],[5],[6],[7]
spatter cones [1],[2],[3]
stratovolcanoes [1],[2],[3],[4],[5],[6],[7],[8],[9],[10],[11]
craters and calderas [1],[2],[3],[4],[5],[6],[7],[8],[9]
volcanic fissure [1]
ancient volcanic flows [1],[2],[3],[4],[5],[6],[7],[8]
ancient volcanic mountains [1],[2],[3],[4],[5],[6],[7],[8]
igneous pluton [1],[2]
pillow basalt [1],[2],[3]
columnar basalt [1],[2],[3]
dikes and sills [1],[2],[3]
hot springs [1],[2],[3],[4],[5],[6],[7],[8]
geysers [1],[2],[3],[4],[5]
steam vents and fumerols [1],[2],[3]
Tectonic Features
folds [1],[2],[3],[4],[5]
joints and fractures [1],[2],[3],[4],[5],[6],[7]
dome (Upheaval Dome) [1]
flat-lying strata [1]
steeply-dipping strata [1],[2],[3],[4],[5],[6],[7],[8],[9],[10],[11]
fracture zones [1],[2],[3],[4]
surficial expression of faults [1],[2],[3],[4],[5],[6],[7],[8],[9]
fault scarps [1],[2],[3],[4],[5],[6],[7]
sag ponds [1],[2],[3],[4]
offset streams [1]
fault creep [1]
mountain front faults [1],[2]
rugged mountain range [1],[2],[3],[4]
angular unconformities [1],[2],[3],[4]
nonconformity [1],[2],[3]
Weathering and Mass Wasting
landslides and slumps [1],[2],[3],[4],[5],[6]
rock falls [1],[2],[3]
avalanche chutes [1],[2],[3],[4]
talus slopes [1],[2],[3],[4]
mudflow and debris flow deposits [1]
weathering bedrock [1],[2]
spheroidal weathering [1],[2],[3],[4],[5]
tafoni (weathering) [1],[2],[3],[4]
tree roots spliting rocks [1]
badlands [1],[2],[3],[4],[5],[6],[7],[8],[9],[10],[11],[12],[13],[14]
Glacier Landforms
mountain glaciers [1],[2],[3],[4],[5],[6],[7],[8],[9],[10]
U-shaped valley [1],[2],[3],[4],[5]
arete (serrate ridge) [1],[2],[3]
glacial lakes [1],[2]
snow pack (recent) [1],[2]
channeled scablands (Grand Coulee) [1],[2],[3],[4]
Coastal Landforms
beaches [1],[2],[3],[4],[5],[6],[7],[8]
coastal dunes [1],[2]
estuaries and marshlands [1],[2],[3],[4],[5]
sea cliffs [1],[2],[3],[4],[5],[6],[7],[8],[9],[10],[11]
sea stacks [1],[2],[3],[4],[5],[6],[7],[8],[9]
sea cave [1]
headlands [1],[2],[3],[4]
marine terraces [1],[2],[3],[4],[5]
tide pools [1],[2],[3],[4],[5]
coastal erosion repairs [1],[2]
beach cobbles [1]
driftwood-covered beach [1]
Stream Valley Landforms
stream channel [1],[2]
stream channel erosion[1],[2]
stream gravel bar [1],[2],[3],[4],[5],[6],[7],[8],[9]
braided stream [1],[2],[3],[4],[5]
mountain stream [1],[2],[3],[4],[5],[6]
cascades and waterfalls [1],[2],[3],[4],[5],[6],[7],[8],[9]
stream terraces [1],[2],[3]
deep canyons [1],[2],[3],[4],[5],[6],[7],[8],[9],[10],[11],[12],[13],[14],[15],[16],[17],[18],[19],[20],[21]
slot canyons [1],[2],[3]
Desert Landscape Features
alluvial fans [1],[2],[3],[4],[5],[6],[7]
playas [1],[2],[3],[4],[5],[6],[7]
dunes [1],[2],[3],[4],[5],[6],[7]
natural bridges and arches [1],[2],[3],[4],[5],[6],[7],[8],[9]
balanced rocks and pinnacles [1],[2],[3],[4],[5],[6],[7],[8],[9],[10],[11],[12],[13],[14],[15],[16],[17],[18]
pediments [1],[2],[3],[4],[5]
erosional escarpments [1],[2],[3],[4]
mesa and buttes [1],[2],[3],[4],[5],[6],[7]
oasis and springs [1],[2],[3],[4],[5],[6],[7],[8]
waterpockets (tanks) [1],[2],[3],[4],[5],[6]
desert varnish [1]
salt flats [1],[2],[3],[4],[5],[6]
dry lake shorelines [1]
tufa towers [1]
desiccation cracks [1]
saline lakes [1],[2]
desert storm [1],[2],[3]
Caverns and Karst Landscape Features
cavern entrances [1],[2],[3],[4],[5],[6]
cave passages [1],[2],[3],[4],[5],[6],[7],[8],[9]
domes and pits [1],[2],[3]
springs [1],[2],[3]
sinkholes [1],[2]
stalagmites, stalactite, columns [1],[2],[3],[4],[5],[6],[7],[8],[9]
helictites [1]
soda straws [1]
travertine flowstone [1],[2],[3]
cave earth (terra cotta) [1]
breakdown (collapse) [1]
boulder cave [1],[2]
karst weathering [1]
Weather
Orographic cloud [1]
Forests and Plant Communities
tropical rain forest (Hawaii) [1],[2],[3],[4]
fern tree [1]
coastal redwoods [1],[2],[3]
alpine coniferous forests [1],[2],[3],[4],[5],[6]
ponderosa pine forest [1],[2]
coastal rain forests [1],[2],[3],[4],[5]
coastal wetlands [1]
subalpine pine forest [1]
deciduous forest (Midwest) [1]
sagebrush desert [1],[2],[3],[4],[5],[6],[7]
Chihuahuan Desert communities
[1],[2],[3],[4],[5],[6],[7]
Colorado Plateau upland Ponderosa pine forest and shrublands [1],[2],[3],[4]
Pinyon pine and juniper forest [1],[2]
mountain meadow with sunflowers [1]
Mojave desert cactus [1]
Riparian (desert river floodplain) [1],[2],[3]
Chaparral shrublands [1]
grassland prairie (Coastal Ranges) [1],[2],[3]
tropical desert (Hawaii) [1],[2]
saguaro cactus forest [1],[2]
Hawaiian palms [1],[2],[3],[4]
desert palm groves [1],[2],[3],[4],[5]
cholla cactus garden [1],[2],[3]
joshua tree forest [1],[2],[3]
ocotillo patch [1],[2]
yucca family plants [1],[2],[3],[4]
agave [1]
smoke trees [1]
arrow weed (Devils Cornfield) [1],[2]
pinyon pine and juniper forest [1],[2],[3],[4]
oak forest (Coastal Ranges) [1],[2],[3]
manzanita shrub forest [1],[2]
bay laurel grove [1],[2],[3]
cottonwoods grove [1]
tamarisk covering a floodplain [1],[2]
spring wildflowers [1],[2],[3],[4],[5]
date palm orchard [1]
wildfire on dry wetlands [1]
petrified wood [1],[2],[3],[4],[5],[6]
lava trees [1]
tree mold in lava [1]
Animals
rattlesnakes [1]
garter snake [1]
tarantula [1],[2]
shore birds [1],[2]
elephant seals [1]
bison [1]
bear cubs [1]
beaver dam [1]
Hawaiian goose [1]
bighorn sheep [1]
horses [1]
donkey [1]
mules [1],[2],[3]
man on horse (historic) [1]
man with rifle (historic) [1]
museum wildlife diaramas [1]
whale skull [1]
rhinoceros skull [1]
fossils [1],[2],[3],[4],[5]
Native and Prehistoric Cultures
Petroglyphs and Pictographs [1],[2],[3],[4],[5],[6],[7],[8],[9],[10],[11],[12]
Southwest archeological sites [1],[2],[3],[4],[5],[6],[7],[8],[9],[10],[11],[12],[13]
Hawaiian archeological sites [1],[2],[3],[4],[5]
Mortar grinding holes [1]
Man-Made Features
20-mule team wagon [1],[2]
gold mine (abandoned) [1],[2]
iron mine (abandoned) [1]
mecury mine (abandoned) [1],[2],[3],[4]
lead mine (abandoned) [1]
silver mine (abandoned) [1]
rock quarry (abandoned) [1]
limestone quarry [1]
charcoal kilns (historic) [1],[2]
lighthouses [1],[2],[3],[4]
observatory [1]
buildings (historic) [1],[2],[3],[4],[5],[6],[7],[8]
trains [1],[2]
tunnels [1]
bridges [1],[2],[3],[4],[5]
dams [1],[2],[3],[4],[5],[6],[7]
San Francisco [1],[2],[3]
Seattle [1],[2]
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