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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:
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 Horizon Depth Description 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 name Depth description Top (cm) Base (cm) Bulk Density Dry Bulk Density Gravimetric Moisture Vol. Moisture (BD=2) 232 0-10cm 0 10 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 232
Clay Mineralogy Sample name Mica IHM HIV - IHM ICHL VT HIV CHL SM CHL SM FE - CHL HT QTZ FLD HB CAL Notes 232 :
National Soil Archive Samples Sample name NSA Sample Id Container type Fraction 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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Antarctic Soils Explorer Copyright Manaaki Whenua – Landcare Research © 1996 - 2023
Version: 1.0.146
Copyright Manaaki Whenua – Landcare Research © 1996 - 2023