Ross Sea Region Soil Sites
605000
605
7-Feb-1990
IBC, GGGC, MRB
Pram Point, Scott Base, Ross Island
Lithium chloride leaching experiment; first resample 1m downslope to determine if downslope leaching has |
occurred |
Dept of Interior US Geological Survey 1986
CS Pro & Lscp
Yes
166.7590
-77.8578
77deg 51.47'S
-166deg -45.54'E
cf. Notes for DESCR below
2
E
60
cf. Notes for GEOLAND below
Oceanic subxerous; a dry site with little snow accumulation or water activity
-18
Coastal Antarctic
Bouldery till and slope debris predominantly from scoria with minor accessions of sedimentary and granitic rocks
Some small yellow lichen and small moss occurrences
Weakly developed small net with indistinct borders
SURFACE WEATHERING or |
SURFACE FEATURES |
Carbonate coatings on underside of surface clasts; some small patchy salt precipitations
Probably some minor treading
605a 0-5cm
101
greyish brown (2.5Y 5/2) bouldery scoria gravel
102
loose to weakly cohesive
103
a few small surface salt precipitations
104
smaller rock particles mainly subrounded and unstained
105
calcium carbonate coatings beneath some clasts
106
indistinct boundary,
605a 5-10cm
201
greyish brown (2.5Y 5/2) bouldery scoria gravel
202
loose
203
smaller rock particles mainly subrounded and unstained
204
distinct boundary,
605c 10-15cm
301
greyish brown (2.5Y 5/2) bouldery scoria gravel
302
loose
303
moist
304
some pale calcium carbonate coatings
305
smaller rock particles mainly subrounded and unstained
306
indistinct boundary,
605d 15-20cm
401
greyish brown (2.5Y 5/2) bouldery scoria gravel
402
loose
403
moist rock particles mainly subrounded,
Yes
a,b,c,d
Hard ice-cemented
20
1
(20cm)
Geoland
Rocks are predominantly scoria flows of the McMurdo Volcanics; Last Glaciation Ross 1 ice covered the site and traces of rocks (sandstone and granite granules |
and small pebbles) probably from the Royal Society Range can be found; the drift mantle is thin and patchy with bedrock a little below the surface |
Descr
Approximately 350m northwest of the western end of Scott Base on a gently sloping step on a minor ridge, about 50m north of the Scott Base to McMurdo |
Station walking track; a generally bouldery surface; at this site, 4 contiguous 1m X 1m plots were set out and 3 irrigated with LiCl, the 4th (southernmost) with |
H2O; this was the first of the plot samplings 1m downslope from the application plot |
Soluble Salt |
Concentration |
60500001
605a
0-5cm
0
5
51.00
2.60
none
60500002
605b
5-10cm
5
10
61.00
none
60500003
605c
10-15cm
10
15
55.00
3.30
none
60500004
605d
15-20cm
15
20
43.00
3.40
none
60500001
60500002
60500003
60500004
60500001
60500002
60500003
60500004
60500001
lithium plots
60500002
see Claridge et al
60500003
perm. perigl. proc (10) 223-233
60500004
12-Dec-2005
Page 563 of 896
605