Ross Sea Region Soil Sites
736000
736
6-Jan-1994
IBC, GGC, DSS
Pram Point, Scott Base
For determination of sources and levels of soil contaminants around Scott Base
not recorded
pro CS & Lscp
No
166.7670
-77.8500
77deg 51.0'S
-166deg -46.0'E
| SS1 T1; this site is located at the southwest end of the geomagnetics area, 44m to the SW of the southernmost Scott Base Wannagan building and 31m NE of survey station |
| 265 at the edge of the coastal cliff |
5
SSE
17
cf. Notes for GEOLAND below
(5o)
| Xerous to subxerous; soil is moist below the surface; some moisture derived from transient |
| snow banks |
-18
Coastal mountain
Fragmented bouldery volcanic bedrock with some additions of glaciogenic finer materials, in part with some modification by slope drift processes; the surface may have been cut
A few small patches of yellow lichen and some moss in the general vicinity
Weakly developed and without distinctive trough expression or well developed net pattern
| SURFACE WEATHERING or |
| SURFACE FEATURES |
Salt efflorescences are moderately extensive; no visible surface weathering of the scoria
cf. Notes for PREVDIST below
736a 2-0cm
101
surface stones and gravel
102
weakly developed pavement of subrounded scoria small pebbles and granules,
736b 0-5cm
201
olive yellow (2.5Y 6/4) granular sand with small pebbles
202
rock particles subangular
203
loose
204
unweathered
205
distinct boundary,
736c 5-10cm
301
dark yellowish brown (10YR 3/4) sandy gravel
302
slightly moist
303
loose
304
unweathered
305
distinct boundary,
736d 10-45cm
401
dark yellowish brown (10YR 3/4) sandy pebble and cobble gravel
402
moist
403
moderately cohesive
404
rock particles are angular scoria
405
distinct boundary, on ice-cemented ground
Yes (IGNS)
Ice-cemented
45
1
Geoland
| The materials comprise volcanics of the McMurdo Volcanics Formation mainly as scoriaceous lava flows; the surface materials are a thin cover of mainly |
| fractured bedrock with addition of some glacially derived granular and pebble clasts from outside the immediate area; the volcanic bedrock has been |
| considerably fractured by patterned ground freeze thaw; the surface age is probably very late Pleistocene (Ross Sea Glaciation) having been modified by |
| McMurdo Sound filling glacial ice |
Prevdist
| Part of the area immediately to the east of the site has been scraped for fill but has shown some recovery" due to ice wedge melt out and expression of patterned |
| ground formation; the old disturbed surface is not markedly different in colour from nearby undisturbed soil" |
| Soluble Salt |
| Concentration |
73600001
736
2-0cm
-2
0
none
73600001
39.00
0.80
73600002
33.40
1.40
73600003
54.00
3.00
73600004
80.00
3.40
73600005
70.00
5.00
73600001
9.00
7.36
73600002
9.10
4.09
73600003
9.60
1.32
73600004
9.80
0.78
73600005
10.10
0.57
73600001
73600002
73600003
73600004
73600005
12-Dec-2005
Page 694 of 896
736