Ross Sea Region Soil Sites
585000
585
24-Jan-1990
IBC, GGGC, MRB
Marble Point region, western McMurdo Sound just east of the Wilson Piedmont Glacier, between Marble Point and Gneiss Point
Soil moisture/salinity relationships investigation
Marble Point Quadrangle, US Geological Survey, 1975
CS Pro & Lscp
Yes
163.6940
-77.4194
77deg 25.16'S
-163deg -41.64'E
cf. Notes for DESCR below
0
Nil
65
cf. Notes for GEOLAND below
| Oceanic subxerous, some soil moistening from snow melt but soil moisture distribution is |
| patchy |
-18
Coastal Antarctic
Reworked till fluvially deposited as sediment by thaw flow from a small nivation hollow
Nil
Micro polygonal, 10-25cm across, in moist sandy patches
| SURFACE WEATHERING or |
| SURFACE FEATURES |
Some surface salt accumulations but very patchy
Nil
585a 0-1cm
101
olive brown (2.5Y 4/4 moist) granular sand
102
weakly cohesive with a weakly developed surface crust
103
rock particles mainly subrounded and unstained
104
distinct boundary,
585b 1-5cm
201
light olive brown (2.5Y 5/4) sand
202
loose
203
rock particles subangular and unstained,
585c 0-1cm
301
light olive brown (2.5Y 5/4) granular sand
302
weakly cohesive with a weakly developed surface crust
303
abundant surface salts
304
distinct boundary,
585d 1-5cm
401
light olive brown (2.5Y 5/4) granular sand
402
loose
403
slightly moist
404
rock particles subangular and unstained,
585e 0-1cm
501
light olive brown (2.5Y 5/4) granular sand
502
weakly cohesive with a weakly developed surface crust
503
rock particles subangular and unstained
504
distinct boundary,
585f 1-5cm
601
light olive brown (2.5Y 5/4) granular sand
602
loose
603
rock particles subangular and unstained,
Yes
a,b,c,d,e,f
0
1
Descr
| About 160m northeast of the old Marble Point camp site; approximately 30m away from site 584 on a low 5m diameter rise adjacent to the foot of a gentle slope; |
| the toe of a small nivation hollow; the samples are from three adjacent spots, a & b moist, c & d salty surface, e & f dry and non salty |
Geoland
| The land surface is an undulating till plain formed by retreat of the Wilson Piedmont Glacier; The Marble Point region is an old landscape, as evidenced by |
| deposits of phillipsite, buried soils and oxidised gneiss, which have been covered by advances of the grounded Ross Ice Shelf; later ice retreat and glaciological |
| features have been controlled by changes in the stranded Wilson Piedmont Glacier; the till mantle is patchy and dominated largely by locally occurring rocks; |
| gneiss bedrock outcrops locally |
| Soluble Salt |
| Concentration |
58500001
585a
0-1cm
0
1
64.00
4.60
none
58500002
585b
2-5cm
2
5
52.00
8.60
none
58500003
585c
0-1cm
0
1
34.00
1.80
none
58500004
585d
2-5cm
2
5
52.00
6.30
none
58500005
585e
0-1cm
0
1
88.00
1.00
none
58500006
585f
2-5cm
2
5
92.00
5.20
none
58500001
65.00
28.30
20.30
23.20
13.50
8.00
3.60
1.70
1.30
4.60
58500002
53.00
30.50
22.00
22.30
10.40
6.90
4.40
1.70
1.80
8.60
58500003
33.00
24.40
18.80
30.20
17.60
5.20
1.80
1.10
1.00
1.80
58500004
53.00
30.10
19.50
24.00
13.20
7.30
3.60
1.30
1.10
6.30
58500005
87.00
13.50
23.80
38.70
16.90
3.80
1.50
1.30
0.30
1.00
58500006
94.00
14.20
25.30
33.70
16.40
6.20
2.70
1.10
0.30
5.20
58500001
7.80
25.40
82.20
17.92
16.00
1.48
118.00
7.00
2.50
58500002
8.40
0.66
2.70
0.25
0.40
0.18
2.80
0.60
0.06
58500003
9.90
11.00
33.00
0.02
0.30
0.62
46.80
14.20
0.20
58500004
9.20
0.45
2.10
0.03
0.05
1.10
0.40
0.03
58500005
8.50
1.42
7.10
0.13
0.27
0.20
6.10
0.80
0.20
58500006
8.80
0.22
1.20
0.01
0.03
0.80
0.10
0.03
58500001
50
30
15
5
58500002
70
20
8
2
58500003
15
25
15
12
20
12
58500004
25
50
15
5
5
58500005
25
45
25
5
58500006
25
15
10
15
12-Dec-2005
Page 543 of 896
585
