Ross Sea Region Soil Sites
765000
765
18-Jan-1994
IBC,GGC,MRB,DIC
Beacon Heights, on the south side of Upper Taylor Glacier between East and West Beacon
Permafrost and soil moisture investigations for comparison with soils from moist coastal regions
not recorded
CS Pro & Lscp
No
160.8330
-77.8250
77deg 49.5'S
-160deg -50.0'E
On the west side of the un-named valley between East and West Beacon peaks; about .8km from West Beacon and 2km from East Beacon; on the undulating moraine surface |
of the valley floor; on the north side of a shallow depression with a smooth surface |
8
S
1,775
cf. Notes for GEOLAND below
(8o)
1
-4.5
10
-5.5
20
-7.5
30
0.0
139
-10.0
Xerous; no readily available source of water; some snow falls in winter and summer months |
but most is lost through ablation or by blowing away |
-30
Central Mountain
Cobbly sandy gravel till derived from sandstones and dolerite
Only endolithic algae observed below the surface of sandstone boulders or outcrops
Weakly developed at the site with 20m polygons and 15cm deep troughs
SURFACE WEATHERING or |
SURFACE FEATURES |
A predominantly cobbly pavement surface with subrounded, strongly oxidised and wind polished clasts; some clasts moderately pitted; sandstones |
moderately stained; weakly ventiform; salts beneath some surface stones |
Nil
765a 4-0cm
101
surface cobbles, pebbles and granules
102
clasts subrounded, strongly stained and some with weakly developed pitting
103
smaller particles strongly oxidised and altered,
765b 0-6cm
201
brown (7.5YR 5/4) sandy pebble and cobble gravel
202
firmly cohesive and frosted
203
smaller rock particles mainly rounded to subrounded
204
quartz particles moderately stained and dolerite and granite particles strongly stained and partly altered
205
sharp boundary,
765c 6-18cm
301
765d 18-35cm
401
brown (10YR 5/3) sandy gravel,
765e 35-45cm
501
yellowish brown (10YR 5/4) sandy gravel, drill core samples in ice-cemented ground
765f 33-46cm
601
] yellowish brown (10YR 5/4) silty gravel,
765g 45-54cm
701
] very pale brown (10YR 7/3)sandy silty gravel,
765h 54-64cm
801
] very pale brown (10YR 7/3) sandy silty gravel,
765i 64-70cm
901
] very pale brown (10YR 7/3) sandy silty gravel,
765j 70-83cm
1001
] very pale brown (10YR 7/3) sandy silty gravel,
765k 83-101cm
1101
] pale brown (10YR 6/3) sandy silty gravel,
765l 101-125cm
1201
] pale brown (10YR 6/3) sandy silty gravel,
765m 125-139cm
1301
] pale brown (10YR 6/3) sandy silty gravel,
Yes
a,b,c,d,e,f,g,h,i,j,k,l,m
a,b,c,d,e,f,g,h,i,j,k,l,m
dry frozen over hard ice-cemented
0
4/5
( ice-cement at 33cm)
Geoland
Local outcropping rocks are Ferrar Dolerite and Beacon Sandstone; the till at this site comprises predominantly dolerite and sandstone but the till has probably |
come from multiple glaciations with thin accessions of till; till lithology appears to represent locally derived rocks |
Soluble Salt |
Concentration |
76500001
765a
4-0cm
-4
0
19.00
0.57
none
76500002
765b
0-6cm
0
6
54.00
1.49
none
76500003
765c
6-18cm
6
18
55.00
1.50
none
76500004
765d
18-35cm
18
35
91.00
1.95
none
76500005
765e
35-45cm
35
45
83.00
2.42
none
76500006
765f
33-46cm
33
46
80.00
14.69
none
76500007
765g
45-54cm
45
54
90.00
20.91
none
76500008
765h
54-64cm
54
64
57.00
15.57
none
76500009
765i
64-70cm
64
70
65.00
25.28
none
76500010
765j
70-83cm
70
83
65.00
22.19
none
76500011
765k
83-101cm
83
101
77.00
21.15
none
76500012
765l
101-125cm
101
125
75.00
22.70
none
76500013
765m
125-139cm
125
139
87.00
16.87
none
76500001
19.00
0.57
76500002
54.00
1.49
76500003
55.00
1.50
76500004
91.00
1.95
76500005
83.00
2.42
76500006
80.00
14.69
76500007
90.00
20.91
76500008
57.00
15.57
76500009
65.00
25.28
76500010
65.00
22.19
76500011
77.00
21.15
76500012
75.00
22.70
76500013
87.00
16.87
76500001
76500002
76500003
76500004
76500005
76500006
76500007
76500008
76500009
76500010
76500011
76500012
76500013
76500001
76500002
76500003
76500004
76500005
76500006
76500007
76500008
76500009
76500010
76500011
76500012
76500013
12-Dec-2005
Page 742 of 896
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