Site Information

Site number:
289
Authors:
IBC, GGC
Date recorded:
1970/01/11
Reason Sampled:
Soil weathering examination
Description:
12km West of Mt Rigby in a pass in the Medina Range; the site is on an undulating knoll about 50m above the saddle
Altitude:
750 m
Aspect:
WSW
Slope:
5 °
Location Data
Observer IBC GGC
GPS No
Latitude Longitude DMS 85° 32' S 156° 05' W 85° 32' S 156° 05' W
Latitude Longitude DD -85.533 -156.08 -85.533 -156.08
Latitude longitude precision DD 0.008 0.04 0.008 0.04
Locality Scott Glacier region, southern Trans-antarctic Mountains, on the West side of the Robert Scott Glacier, about 8km from the coast in the Medina Peaks region
Survey Mount Goodale

Climate

Soil climate zone:
Coastal Mountain
Estimated mean annual temperature:
-20 °C
Frozen ground depth:
25 cm
Frozen type:
Ice-cemented
Frozen comment:
25cm

Geology

Geological setting:
Rocks in the area are granites and metasedimentary rocks that are metamorphosed and granitised
Patterned ground:
Surface weathering or surface features:
Oxidised bedrock outcrops but soil surface relatively young; whitish salt efflorescences on rock surfaces

Soil

Soil parent material:
Dominantly granitic till with minor gneiss and hornfels
Previous disturbance:
Nil
Soil weathering stage:
6 1 (Campbell & Claridge 1975)
Soil moisture status:
extensive snow patches with localised thawing; soils are moist
Biological activity:
Nil observed but lichens and soil organisms common in the area
Profile Description
HorizonDepthDescription
289a -2 – 0 cm surface pebbles and granules; non to very weakly stained; dominantly subangular,
289b 0 – 2 cm light grey (5Y 7/1) sandy pebble gravel; moderately cohesive; moderately developed vesicular structure; thin white salt efflorescence on the surface; rock particles subangular and unstained; distinct boundary,
289c 2 – 7 cm light grey to grey (5Y 6/1) sandy pebble gravel; moist; moderately cohesive; moderately developed vesicular structure; rock particles subangular and unstained; distinct boundary,
289d 7 – 25 cm light grey to grey (5Y 6/1) sandy to silty gravel; moist; slightly sticky; weakly developed vesicular structure; rock particles subangular and unstained; sharp boundary, on ice-cemented ground

Sample Data

Physical Data
Sample nameDepth descriptionTop (cm)Base (cm)Bulk DensityDry Bulk DensityGravimetric MoistureVol. Moisture (BD=2)
289a 2-0cm -2.0 0.0 No
289b 0-2cm 0.0 2.0 No
289c 2-7cm 2.0 7.0 No
289d 7-25cm 7.0 25.0 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
289a
289b
289c
289d
Clay Mineralogy
Sample nameMicaIHMHIV - IHMICHLVTHIVCHLSMCHL SMFE - CHLHTQTZFLDHBCALNotes
289a :
289b :
289c :
289d :
National Soil Archive Samples
Sample nameNSA Sample IdContainer typeFraction type
289a M22/1595 medium coarse
289a M22/7168 Glass vial metal lid
289b M22/1596 medium coarse
289b M22/1597 White lid small fine
289b M22/7169 Glass vial metal lid
289c M22/1598 medium coarse
289c M22/1599 medium fine
289c M22/7170 Glass vial metal lid
289d M22/1600 medium coarse
289d M22/1601 medium fine
289d M22/7171 Glass vial metal lid

Photos

Photo record:
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