Site Information

Site number:
232
Authors:
IBC, GGC
Date recorded:
1969/11/30
Reason Sampled:
Soil weathering examination
Description:
La Gorce Mountains at the northwestern end near Mt Gjertsen and from a site on the ridgetop near the northern summit ridge knoll
Altitude:
1950 m
Aspect:
N
Slope:
3 °
Location Data
Observer IBC GGC
GPS No
Latitude Longitude DMS 86° 37.5' S 148° 16' W 86° 37.5' S 148° 16' W
Latitude Longitude DD -86.625 -148.267 -86.625 -148.267
Latitude longitude precision DD 0.004 0.008 0.004 0.008
Locality Scott Glacier region, southern Trans-antarctic Mountains in the La Gorce Mountains
Survey US Geological Survey 1:250 000 1968, Mount Blackburn

Climate

Soil climate zone:
Inland Mountain
Estimated mean annual temperature:
-40 °C
Frozen ground depth:
10 > cm
Frozen type:
Dry-frozen
Frozen comment:
>10cm

Geology

Geological setting:
Quartzites and quartzitic greywackes of the La Gorce Formation are common in the area; porphyritic volcanic rocks are also present
Patterned ground:
Nil
Surface weathering or surface features:
Some scattered salts; moderate surface staining

Soil

Soil parent material:
Fragmented dark porphyritic bedrock with locally derived fines
Previous disturbance:
Nil
Soil weathering stage:
6 3 (Campbell & Claridge 1975)
Soil moisture status:
Scattered snow patches but no indications of snow thaw or liquid water
Biological activity:
Nil at site
Profile Description
HorizonDepthDescription
232a 0 – 10 cm light yellowish brown (10YR 6/4) sandy to silty pebbly to bouldery gravel; weakly to moderately cohesive; patchy well developed vesicular structure; scattered small salt flecks; distinct boundary, on fragmented bedrock

Sample Data

Physical Data
Sample nameDepth descriptionTop (cm)Base (cm)Bulk DensityDry Bulk DensityGravimetric MoistureVol. Moisture (BD=2)
232 0-10cm 0 10 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
232
Clay Mineralogy
Sample nameMicaIHMHIV - IHMICHLVTHIVCHLSMCHL SMFE - CHLHTQTZFLDHBCALNotes
232 :
National Soil Archive Samples
Sample nameNSA Sample IdContainer typeFraction type
232 M22/1291 White lid small coarse
232 M22/1292 medium fine
232 M22/7029 Glass vial metal lid

Photos

Photo record:
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