Ross Sea Region Soil Sites
638000
638
2-Dec-1991
IBC
Cape Roberts, Coastal McMurdo Sound
Soil examination and characterisation
USGS Department of the Interior 1:250,000 Ross Island and Vicinity 1986
CS Pro
No
163.1770
-77.0380
77deg 2.3'S
-163deg -10.6'E
Approximately 300m to the west of Cape Roberts and 70m from the northern coast; on a south sloping gravel beach ridge
3
S
5
The rocks of the area are granodiorites and gneisses that have been planed by ice and possibly modified by wave action; bedrock outcrops are partly covered with, patchy beach |
gravels |
Patchy snow drift but a dry site with no soil moistening
-18
Coastal Antarctic
Sorted coarse beach gravel
Nil at site, cyanobacterial mats are common in the area; considerable local skua activity
Nil
SURFACE WEATHERING or |
SURFACE FEATURES |
Oxide staining on some surface rocks; clasts mainly subrounded due to beach abrasion; some granular disintegration of granitic clasts
Much low intensity human activity in the area
638a 3-0cm
101
surface cobbly gravel
102
subangular and unstained
103
some distinct salt precipitations on rock surfaces,
638b 0-15cm
201
light olive grey (5Y 6/2) coarse sandy gravel
202
loose
203
rock particles subangular and unstained
204
some distinct salt precipitations on rock surfaces
205
indistinct boundary,
638c 15-25cm
301
light olive grey (2.5Y 6/2) coarse sandy gravel
302
loose
303
rock particles subangular to subrounded
304
some small bone fragments and fibrous organic material
Yes
a,b,c
0
1
Soluble Salt |
Concentration |
63800001
4.00
63800002
37.00
63800003
35.00
63800001
63800002
63800003
63800001
63800002
63800003
12-Dec-2005
Page 596 of 896
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