Ross Sea Region Soil Sites
625000
625
25-Nov-1991
IBC, GGC, MRB
Marble Point, western McMurdo Sound
Soil weathering examination
USGS Antarctica Topographic Series 1:50,000; Marble Point, Antarctica
Yes
163.8030
-77.4348
77deg 26.09'S
-163deg -48.18'E
Approximately 800m SW of Marble Point; on the peninsula; on an uneven slightly stepped rising surface and a flattish site near the ridge crest
0
Nil
25
Bedrock outcrops in places on the Marble Point Peninsula and is partly covered with patchy drift and some large granite erratics; patches of reddish brown soil occur in places
A dry site, a few local snow patches but no soil moistening
-18
Coastal Antarctic
Partly oxidised sandy gravel undifferentiated drift
Nil at site; moss patches and cyanobacteria are common locally
Nil
| SURFACE WEATHERING or |
| SURFACE FEATURES |
A well developed pebble pavement; scattered small to medium boulders mainly rounded, some partly oxidised; the weathering may be relict
No major past human activity but recent vehicle travel by large wide tyred Delta
625a 0-7cm
101
dark yellowish brown (10YR 4/6) sandy pebble and cobble gravel
102
weakly cohesive
103
rock particles angular and mainly unstained but a few distinctly altered
Yes
a
0
4
| Soluble Salt |
| Concentration |
62500001
17.40
18.40
25.90
19.10
11.40
3.10
2.50
2.20
62500001
8.10
1.50
59.30
3.00
16.30
1.80
7.70
0.30
1.13
62500001
12-Dec-2005
Page 583 of 896
625
