Site Information

Site number:
228
Authors:
IBC, GGC
Date recorded:
1969/11/28
Reason Sampled:
Soil weathering examination
Description:
Table Top, a small peak on the east side of Bartlett Glacier, 13km SE of Mt Gardiner and 9km NW of Mt Denauro; on a broad undulating till-covered ridge approximately 100 below the crest
Altitude:
1975 m
Aspect:
N
Slope:
3 °
Location Data
Observer IBC GGC
GPS No
Latitude Longitude DMS 86° 24.50' S 152° 17' W 86° 24.00' S 152° 17' W
Latitude Longitude DD -86.4083 -152.283 -86.4000 -152.283
Latitude longitude precision DD 0.0008 0.008 0.0008 0.008
Locality Scott Glacier region, southern Trans-antarctic Mountains on the east side of Bartlett Glacier
Survey US Geological Survey 1:250 000 1968, Nilsen Plateau

Climate

Soil climate zone:
Inland Mountain
Estimated mean annual temperature:
-38 °C
Frozen ground depth:
40 cm
Frozen type:
Dry frozen over stagnant ice?
Frozen comment:
40cm

Geology

Geological setting:
The upper surface of Table Top has a cover of till which shows a moderate degree of weathering; the till has a typical sandy/silty rock flour fine fraction; granite, dolerite and sandstone clasts indicate a non local source
Patterned ground:
Weakly developed broad nets
Surface weathering or surface features:
Small to medium sized boulders, subangular to subrounded, with negligible pavement formation; distinct to strong surface staining and some clasts polished; some surface exfoliation; salt accumulations beneath some clasts

Soil

Soil parent material:
Sandy to silty bouldery till from granite dolerite and sandstone
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
228a 0 – 3 cm brownish yellow (10YR 6/6) granular pebbly silty sand; loose to weakly cohesive; weakly developed vesicular structure; a few scattered salts; rock particles subrounded and weakly stained; distinct boundary,
228b 3 – 9 cm brownish yellow to light yellowish brown (10YR 6/6 - 6/4) silty granular bouldery gravel; indistinct zone of salts around 10- 12cm; loose; rock particles subangular to subrounded and weakly stained and a few some with thin reddish yellow (7.5YR 5/8) coatings; indistinct boundary,
228c 35 – 40 cm brownish yellow to light yellowish brown (10YR 6/6 - 6/4) sandy gravel; loose; rock particles subangular to subrounded and weakly stained; sharp boundary, on ice

Sample Data

Physical Data
Sample nameDepth descriptionTop (cm)Base (cm)Bulk DensityDry Bulk DensityGravimetric MoistureVol. Moisture (BD=2)
228a 0-3cm 0.0 3.0 No
228b 3-9cm 3.0 9.0 No
228c 35-40cm 35.0 40.0 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
228a
228b
228c
Clay Mineralogy
Sample nameMicaIHMHIV - IHMICHLVTHIVCHLSMCHL SMFE - CHLHTQTZFLDHBCALNotes
228a :
228b :
228c :
National Soil Archive Samples
Sample nameNSA Sample IdContainer typeFraction type
228a M22/1278 White lid small coarse
228a M22/1279 medium fine
228a M22/7024 Glass vial metal lid
228b M22/1280 White lid small coarse
228b M22/1281 medium fine
228b M22/7025 Glass vial metal lid
228c M22/1282 medium coarse
228c M22/1283 medium fine
228c M22/7026 Glass vial metal lid

Photos

Photo record:
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