Ross Sea Region Soil Sites
51000
51
21-Nov-1964
IBC, GGC
Inexpressible Island, Terra Nova Bay
Soil characterisation
USGS 1:250 000 1968; Mt Melbourne SS 58-60/9
B&W Pro
No
163.7170
-74.9000
74deg 54.0'S
-163deg -43.0'E
A gently sloping raised beach surface, the highest identified, forming a distinct terrace about 40m wide; about 1km SE of Evans Cove
3
NE
45
cf. Notes for GEOLAND below
(3o)
Oceanic subxerous; no liquid water present and little local snow cover
-17
Coastal Antarctic
Bouldery beach gravels derived from dominantly granitic rocks (Granite Harbour Intrusives) partly reworked by patterned ground movement
Small patches of black and yellow lichen on rocks and some small moss patches
Moderately developed medium nets 3-8m across
SURFACE WEATHERING or |
SURFACE FEATURES |
Most surface boulders and cobbles subrounded with a noticeable light surface staining, some slight exfoliation
Nil
4-0cm
101
surface cobbles, pebbles and granules and sand
102
mainly subrounded
103
weakly stained,
51a 0-8cm
201
pale olive (5Y 6/3) sandy pebble and cobble gravel
202
loose
203
rock fragments mainly subrounded and very weakly stained
204
distinct boundary,
51b 8-13cm
301
light brownish grey (2.5Y 6/2) sandy pebble and cobble gravel
302
loose to weakly cohesive
303
slightly frosted
304
rock fragments mainly subrounded and mainly unstained
305
abrupt boundary,
51c 13-23cm
401
light grey to grey (5Y 6/1) sandy gravel
402
firmly cohesive
403
frosted
404
weakly developed vesicular structure
405
rock fragments subrounded, subangular and unstained
406
sharp boundary, on frozen ground.
Yes
a,b,c
Hard ice-cemented
23
2
(23cm)
Geoland
A well defined series of raised beaches occur on the northeast and eastern coasts of Inexpressible Island up to about 45m above sea level; some surfaces are well |
demarcated by the presence of rounded boulders but where there has been active patterned ground movement, demarcation on lithological characteristics is less |
clear |
Soluble Salt |
Concentration |
5100001
51a
0-8cm
0
8
none
5100002
51b
8-13cm
8
13
none
5100003
51c
13-23cm
13
23
none
12-Dec-2005
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