Serpentine Geoecology
from Alaska to Baja California
Scroll through pictures of serpentine outcrops in
the Blue Mountains, Northern Cascades, Gulf of Alaska,
Denali and
Northern Alaska
and
the Stillwater complex in the Rocky Mountain Range.
|
| |
|
|

Blue Mountains, Canyon Mtn. locality, Baldy Mountain
alpine fell field at about 2200 m on serpentinized peridotite, but timber
up over 2700 m
on nonserpentine soils in Strawberry Range beyond Baldy Mountain
|

Blue Mountains, Canyon Mtn. locality, Vinegar Hill (2478
m)
a ridge of serpentinized peridotite leads off to the left, just above
road
|

Blue Mountains, Canyon Mtn. locality, along ridge NW from
Vinegar Hill
Lithic Haplocryoll on shoulder of ridge with whitebark pine/sagebrush/buckwheat–phlox/sedge
plant community with sparse Douglas-fir, patchy juniper (J. communis),
and bluegrass, and forbs
|

Blue Mountains, Canyon Mtn. locality, along ridge NW from
Vinegar Hill
view from footslope sagebrush–rumex plant community on deep Haplocryoll
across road
to backslope with ponderosa pine/sagebrush/buckwheat–phlox/sedge
on moderately deep Cryalf
|

Blue Mountains, Canyon Mtn. locality, Aldrich Mountains,
south of Mt. Vernon
ponderosa pine–Douglas-fir plant community on serpentine Typic Argixerolls
and
juniper (J. scopulorum)/Cercocarpus ledifolius/Idaho fescue–bluegrass
on Lithic Haploxerolls
|

Blue Mountains, Canyon Mtn. locality, West Bank west of
Canyon City
juniper (J. scopulorum)/wheatgrass plant community on Mollisols of serpentine
melange,
except that main grass is stipa (Achnatherum thurberiana) here
|

Northern Cascade–Fraser River, Stuart Lake locality
Mt Sidney Williams (nonserpentine) with a serpentine bluff on right, spotty
serpentine in clearcut
|

Northern Cascade–Fraser River, Shulaps locality
subalpine serpentine Inceptisols (Cryepts) above Blue Creek
whitebark pine/willow–low juniper–buckwheat–kinnikinnick/Sedum
lanceolatum–arctic lupine
|

Northern Cascade–Fraser River, Hozameen locality
Olivine Mountain (within Tulameen concentric body) from upstream along
the Tulameen River
|

Northern Cascade–Fraser River, Twin Sisters locality
Twin Sisters (dunite) from Washington highway 9, Mt. Baker, an old volcano,
on left
|

Gulf of Alaska, Eklutna locality, Chugach Range
Inceptisols and Mollisols on open S-facing slope with buffaloberry (Sheperdia
canadensis)–low juniper (J. communis)–kinnikinnick (A. uva-ursi)–prickly
saxifrage (S. tricuspidata)/fescue grass
|

Gulf of Alaska, Union Bay locality, cropped photo of P.
Krosse
alpine meadow (Inceptisols) and forest (Inceptisols and Spodosols) on
Golden Mountain,
one of the first Alaska-type (concentric) bodies thoroughly described
by petrologists
|

Denali–Yukon, Nahlin locality, west of Atlin, alpine
tundra
Inceptisols with caespitose willow–yellow mountain avens (Dryas
drummondii)/sedges–grass, and patches of mountain-heather (C. tetragona),
silene (S. acaulis), and stonecrop (S. lanceolatum)
|

Northern Alaska–Kuskokwim Mountains, Kanuti locality
east end of serpentine Caribou Mountain, alpine tundra with white spruce
forests on sides
forbs (including Dryas octapetala), polar grass, and lichens on summit
of ridge in foreground
|

Northern Alaska–Kuskokwim Mountains, Kanuti locality
Caribou mountain side with alpine tundra on Inceptisols (Eutrocryepts)
with crowberry (Empetrum nigrum)–blueberry (V. uliginosum)–dwarf
willow–Labrador tea–Cassiope tetragona)/moss/lichens
|

Northern Alaska–Kuskokwim Mountains, Kanuti locality
Caribou Mountain solifluction hollow, wet Inceptisols with dwarf birch
(B. glandulosa)–Labrador tea–mountain-heather (C. tetragona)–alpine
blueberry (V. uliginosum)/sedges/sphagnum/lichens
|
| |
|
|

Northern Alaska–Kuskokwim Mountains, Livengood locality
well-drained Inceptisol (Typic Eutrocryept) in frost-shattered serpentine
on S-facing slope
white spruce (P. glauca)/kinnickinick (A uva-ursi)/low juniper (J. communis)/mosses,
lichens
|

Northern Alaska–Kuskokwim Mountains, Livengood locality
somewhat poorly-drained Inceptisol in lithologically mixed colluvium on
N-facing slope
black spruce (P. mariana)/Ledum palustre decumbens plant community with
much sphagnun
|

Northern Alaska–Kuskokwim Mountains, Livengood locality
well-drained Inceptisol (Typic Eutrocryept) in frost-shattered serpentine
on ridge summit
paper birch (B. papifera)/Labrador tea–lingonberry (V. vitis-idaea)/Calamagrostris
canadensis
|

Stillwater complex, Rocky Mountain Range
Bear Tooth Plateau south from alpine tundra on Iron Mountain (3075 m asl)
|

Stillwater complex, Rocky Mountain Range
deep Alfisol (Cryalf) of pyroxenite on north side of Iron Mountain with
spruce (P. engelmannii)–pine (P. albicaulis)–fir (A. lasiocarpa)/grouseberry
(V. scopularum)
|

Stillwater complex, Rocky Mountain Range
Alfisol (Haplocryalf) of pyroxenite on Chrome Mountain (3058 m)
lupine (L. bicolor)–bistort (P. bistortoides)–sandwort (Minuartia
sp.)/tufted hairgrass/sedges
|

Stillwater complex, Rocky Mountain Range, Stillwater Mine
located where Stillwater River crosses Stillwater complex, paladium and
platinum concentration
|
|