Ross Sea Region Soil Sites
717000
717
8-Jan-1993
IBC, GGC
Pram Point near Scott Base
LiCl soil leaching experiment
not recorded
CS Site photo
No
166.7500
-75.8333
75deg 50.0'S
-166deg -45.0'E
| on the floor of a gently sloping small gully; a small nivation cirque formed in the volcanic deposits and situated about 250m upslope and to the NW of Scott Base; this site is |
| situated 1m downslope from the initial 1989/90 site of application of LiCl |
4
SE
95
cf. Notes for GEOLAND below
(4o)
| xerous to subxerous; the site receives annual snowfall and also a considerable accumulation |
| of drift snow which lies until early January before thawing; thaw results in the site becoming |
| wet with surface water flowsfor short periods |
-18
coastal mountain
predominantly fragmented basaltic scoria, probably with minor inclusions of glaciogenic detritus
nil at site but some lichen and small moss patches in the general area
weakly developed
| SURFACE WEATHERING or |
| SURFACE FEATURES |
non to weakly developed
cf. Notes for PREVDIST below
717a 1-0cm
101
olive grey (5Y 5/2) sandy pebble to boulder gravel
102
loose
103
moist
104
some salts precipitated at the surface
105
rock particles subrounded, subangular and unweathered
106
sharp boundary,
717b 0-5cm
201
olive (5Y 5/3) sandy pebble to cobble gravel gravel
202
moderately cohesive
203
moist
204
rock particles subrounded, subangular and unweathered
205
indistinct boundary,
717c 5-10cm
301
pale olive (5Y 6/3) silty to sandy cobbly gravel
302
moderately cohesive
303
moist
304
rock particles subrounded, subangular and unweathered
305
indistinct boundary,
717d 10-25cm
401
pale olive (5Y 6/3) silty to sandy cobbly gravel
402
moderately cohesive
403
moist
404
rock particles subangular, subrounded and unweathered
405
sharp boundary,
717e 25-30cm
501
pale olive (5Y 6/3) silty to sandy cobbly gravel
502
very hard
503
ice cemented
504
rock particles subangular and unweathered
505
717f 30-44cm
601
] drill core
602
darg grey (2.5Y N4/) scoriaceous basalt with
717g 44-55cm
701
] some fines
702
very hard and ice cemented.
717h 55-65cm
801
]
yes
a,b,c,d,e,f,g,h
hard ice-cemented
20
1
Geoland
| the deposit comprises old scoria flows of the McMurdo Volcanics with the surface rock being fragmented mainly into cobble and boulder sized clasts; |
| commonly found are small rounded pebbles of granitic and sedimentary rocks and these are probably derived from the mainland, having been transported by the |
| former expanded Ross Sea Glacier, and deposited as it retreated from Ross Island |
Prevdist
| the site is in an area which is subject to relatively high human impact from walking, cable laying etc; there have been previous disturbances at the sample locality |
| from establishing the leaching trial and subsequent samplings from adjacent plots; the site earlier had a semi-permanent snow cover but this has disappeared as a |
| result of human activity |
| Soluble Salt |
| Concentration |
71700001
717a
1-0cm
-1
0
9.80
none
71700002
717b
0-5cm
0
5
9.80
none
71700003
717c
5-10cm
5
10
10.80
none
71700004
717d
10-25cm
10
25
9.20
none
71700005
717e
25-30cm
25
30
10.00
none
71700006
717f
30-44cm
30
44
21.00
none
71700007
717g
44-55cm
44
55
37.90
none
71700008
717h
55-65cm
55
65
39.70
none
71700001
9.80
71700002
9.80
71700003
10.80
71700004
9.20
71700005
10.00
71700006
21.00
71700007
37.90
71700008
39.70
71700001
71700002
71700003
71700004
71700005
71700006
71700007
71700008
71700001
71700002
71700003
71700004
71700005
71700006
71700007
71700008
12-Dec-2005
Page 675 of 896
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