Site Information

Site number:
296
Authors:
IBC, GGC
Date recorded:
1970/01/14
Reason Sampled:
Soil weathering examination
Description:
Brown Peaks on the eastern side of the Amundsen Glacier, at the northern end; from a site on the ridge crest; the site is adjacent to site 295 but without a lichen cover
Altitude:
910 m
Aspect:
Nil
Slope:
0 °
Location Data
Observer IBC GGC
GPS No
Latitude Longitude DMS 85° 33' S 157° 50' W 85° 33' S 157° 50' W
Latitude Longitude DD -85.550 -157.83 -85.550 -157.83
Latitude longitude precision DD 0.008 0.08 0.008 0.08
Locality Scott Glacier region, southern Trans-antarctic Mountains, on the West side of the Robert Scott Glacier, about 12km from the coast west of the Medina Peaks
Survey Mount Goodale

Climate

Soil climate zone:
Coastal Mountain
Estimated mean annual temperature:
-20 °C
Frozen ground depth:
15 > cm
Frozen type:
Frozen comment:
>15cm

Geology

Geological setting:
The area has a complex and variable sequence of rocks including metasedimentary quartzite, marbles, schists, and granitised sediments; the rocks at this site are dominantly granitic
Patterned ground:
Surface weathering or surface features:
Surface rocks are strongly oxidised and well stained; also crumbly; some local solifluction; weathering may be relict

Soil

Soil parent material:
Thin till cover with granitic bedrock; granitic till with some feldsitic rocks
Previous disturbance:
Nil
Soil weathering stage:
4 (Campbell & Claridge 1975)
Soil moisture status:
The soils are very moist from thawing snow patches
Biological activity:
Black lichen and soil micro-organisms identified in soils nearby but no lichen at the soil surface at this adjacent site
Profile Description
HorizonDepthDescription
296a 0 – 1 cm yellowish brown (10YR 5/4) granular sandy gravel; moist; loose; rock particles angular to subangular and strongly stained; distinct boundary,
296b 1 – 4 cm yellowish brown (10YR 5/40 granular gravel; weakly cohesive; weakly developed vesicular structure; rock particles subangular and strongly stained; distinct boundary,
296c 4 – 15 cm yellowish brown (10YR 5/4); moist; moderately cohesive; rock particles subangular and strongly stained

Sample Data

Physical Data
Sample nameDepth descriptionTop (cm)Base (cm)Bulk DensityDry Bulk DensityGravimetric MoistureVol. Moisture (BD=2)
296a 0-1cm 0.0 1.0 No
296b 1-4cm 1.0 4.0 No
296c 4-15cm 4.0 15.0 No
Particle size distribution
Sample name< 2 mm2 - 0.5 mm0.5 - 0.25 mm0.25 - 0.1 mm0.1 - 0.05 mm0.05 - 0.02 mm0.02 - 0.002 mm< 0.002 mmFe2O3CaCO3Notes
296a
296b
296c
Clay Mineralogy
Sample nameMicaIHMHIV - IHMICHLVTHIVCHLSMCHL SMFE - CHLHTQTZFLDHBCALNotes
296a :
296b :
296c :
National Soil Archive Samples
Sample nameNSA Sample IdContainer typeFraction type
296a M22/1635 medium coarse
296a M22/1636 White lid small fine
296a M22/7185 Glass vial metal lid
296b M22/1637 medium coarse
296b M22/1638 White lid small fine
296b M22/7186 Glass vial metal lid
296c M22/1639 medium coarse
296c M22/1642 White lid small fine
296c M22/7187 Glass vial metal lid

Photos

Photo record:
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