Ross Sea Region Soil Sites
46000
46
19-Nov-1964
IBC, GGC
Inexpressible Island, Terra Nova Bay
soil characterisation
USGS 1:250 000 1968; Mt Melbourne SS 58-60/9
CS LScp
No
163.6170
-74.8833
74deg 53.0'S
-163deg -37.0'E
Near the highest point on Inexpressible Island on an undulating broad flattish ridge surface
2
W
380
cf. Notes for GEOLAND below
(2o)
Oceanic subxerous; small scattered snow patches; little liquid water available
-20
Coastal Antarctic
Bouldery till, mainly granitic
Nil observed
Large weakly developed polygonal nets
| SURFACE WEATHERING or |
| SURFACE FEATURES |
| Some surface oxide staining on boulders; many boulders unstained and showing abrasion on upwind sides; some exfoliation; most boulders subangular to |
| angular |
Nil
46a 0-14cm
201
light brownish grey (2.5Y 6/2) sandy pebble and cobble gravel
202
loose
203
rock fragments angular to subangular with some weak staining
204
sharp boundary,
46b 14-25cm
301
light grey (5Y 7/2) sandy gravel
302
cohesive
303
frosted
304
weakly developed vesicular structure
305
rock fragments angular to subangular and unstained, on frozen ground.
5-0cm
101
surface pebbles and cobbles
102
subangular to angular and weakly stained,
Yes
a,b
Hard ice-cemented
25
2
(25cm)
Geoland
| The surface materials on the higher slopes of Inexpressible Island are mainly tills from Granite Harbour Intrusives, which occur extensively in the region; |
| sandstone, metasedimentary and dolerite rocks within the tills suggest that it has originated from the Priestley Glacier |
| Soluble Salt |
| Concentration |
4600001
46a
0-14cm
0
14
none
4600002
46b
14-25cm
14
25
none
12-Dec-2005
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