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Site Information
Site number:
267
Authors:
IBC, GGC
Date recorded:
1969/12/31
Reason Sampled:
Soil weathering examination
Description:
Near the summit of a peak on a ridge on the Cox Peaks range, about 10km WSW from Mt Crockett; adjacent to a steep rock outcrop
Altitude:
1400 m
Aspect:
NE
Slope:
15 °
Location Data
Observer
IBC
GGC
GPS
No
Latitude Longitude DMS
86° 0.3' S 153° 228.48' W
86° 0.3' S 153° 228.5' W
Latitude Longitude DD
-86.0050 -153.80800
-86.0050 -153.808
Latitude longitude precision DD
0.0008 0.00008
0.0008 0.004
Locality
Scott Glacier region, southern Trans-antarctic Mountains, on the West side of the Robert Scott Glacier on the Cox Peaks range
Survey
Nilsen Plateau
Climate
Soil climate zone:
Central Mountain
Estimated mean annual temperature:
-35
°C
Frozen ground depth:
30 cm
Frozen type:
Hard frozen
Frozen comment:
30cm
Geology
Geological setting:
Argillaceous sediments, dark Precambrian acid volcanics and granites occur in the Cox Peaks range; the sediments are intruded by granites
Patterned ground:
Nil
Surface weathering or surface features:
Dark rocks have distinct surface staining and are mainly angular with fragmentation into flaggy forms; scattered salts are present
Soil
Soil parent material:
Mixed slope debris from coarse dark argillaceous sediments,
Previous disturbance:
Nil
Soil weathering stage:
6
4
(Campbell & Claridge 1975)
Soil moisture status:
Some soil thaw with damp patches
Biological activity:
Scattered yellow lichen
Profile Description
Horizon Depth Description
267d
salts adhering to rocks
267a
0
–
5
cm
light yellowish brown to yellowish brown (2.5Y 6/4 - 5/4) sandy granular to bouldery gravel; weakly cohesive; moist in patches; weakly developed vesicular structure, rock particles distinctly stained and some partly altered; distinct boundary,
267b
5
–
20
cm
light olive brown to yellowish brown (2.5Y 5/6 - 10YR 5/6) sandy pebble gravel; moderately cohesive; rock particles moderately stained with some distinctly altered; salt encrustations on some rock faces; sharp boundary,
267c
20
–
30
cm
olive brown (2.5Y 5/4) sandy gravel; firmly frosted; rock particles moderately stained and partly altered,
Sample Data
Physical Data
Sample name Depth description Top (cm) Base (cm) Bulk Density Dry Bulk Density Gravimetric Moisture Vol. Moisture (BD=2)
267a
0-5cm
0.0
5.0
No
267b
5-20cm
5.0
20.0
No
267c
20-30cm
20.0
30.0
No
267d
No
Particle size distribution
Sample name < 2 mm 2 - 0.5 mm 0.5 - 0.25 mm 0.25 - 0.1 mm 0.1 - 0.05 mm 0.05 - 0.02 mm 0.02 - 0.002 mm < 0.002 mm Fe2 O3 CaCO3 Notes
267a
267b
267c
267d
Clay Mineralogy
Sample name Mica IHM HIV - IHM ICHL VT HIV CHL SM CHL SM FE - CHL HT QTZ FLD HB CAL Notes
267a
:
267b
:
267c
:
267d
:
National Soil Archive Samples
Sample name NSA Sample Id Container type Fraction type
267a
M22/1447
medium
coarse
267a
M22/1448
medium
fine
267a
M22/7106
Glass vial metal lid
267b
M22/1449
medium
coarse
267b
M22/1450
White lid small
fine
267b
M22/7107
Glass vial metal lid
267c
M22/1451
medium
coarse
267c
M22/1452
White lid small
fine
267c
M22/7108
Glass vial metal lid
Photos
Photo record:
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Antarctic
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Copyright Manaaki Whenua – Landcare Research © 1996 - 2023
Version: 1.0.124
Copyright Manaaki Whenua – Landcare Research © 1996 - 2023