Ross Sea Region Soil Sites
310000
310
18-Nov-1972
IBC, GGC
Taylor Dry Valley, McMurdo Dry Valley region near Lake Bonney
Soil weathering examination
USGS 1:50,000 Antarctic Topo. Ser. Lake Bonney Quadrangle
CS Lsc
No
162.4830
-77.6717
77deg 40.3'S
-162deg -29.0'E
Approximately 3.5km NW from the NE end of Lake Bonney, and .5km SE of Matterhorn; on a steep debris slope below a dolerite outcrop
30
SE
1,500
Dolerite outcrops on the higher surfaces of the Matterhorn
(30o)
A dry site with no adjunct snow patches or evidence of snow thaw
-25
Central Mountain
Doleritic slope detritus from medium grained dolerite
Nil observed
Nil
SURFACE WEATHERING or |
SURFACE FEATURES |
Granite on outcrop surfaces below shows honeycomb cavernous weathering with distinct patchy oxidation; The dolerite exhibits some minor cavernous |
weathering and has patchy but strong surface oxidation |
Nil
310a 2-0cm
101
surface pebbly granular gravel
102
rock particles exfoliated dolerite, tabular, angular and unstained
103
partly crumbly,
310b 0-3cm
201
yellowish brown (10YR 5/4) sandy granular gravel
202
loose
203
rock particles angular, some tabular and weakly stained
204
some partly altered
205
indistinct boundary,
310c 3-30cm
301
yellowish brown (10YR 5/4) sandy granular gravel
302
loose
303
rock particles angular and unstained
Yes
a,b
Dry frozen
30
4
(>30cm)
Soluble Salt |
Concentration |
31000001
70.00
31000002
70.00
31000003
31000001
31000002
31000003
31000001
31000002
31000003
12-Dec-2005
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