Browse Data | 1972 - Wright Valley / Taylor Dry Valley

Site Information

Site number:
368
Authors:
IBC, GGC
Date recorded:
1972/12/16
Reason Sampled:
Weathering examination
Description:
South of Bull Pass on the old fan surface; the lower slope of a small hill with a sedimentary exposure of Pecten Fan Gravel
Altitude:
150 m
Aspect:
W
Slope:
15 °
Location Data
Observer IBC GGC
GPS No
Latitude Longitude DMS 77° 31.2' S 161° 56.7' E 77° 31.2' S 161° 56.7' E
Latitude Longitude DD -77.5200 161.9450 -77.5200 161.9450
Latitude longitude precision DD 0.0008 0.0008 0.0008 0.0008
Locality McMurdo Dry Valley region; Wright Valley
Survey USGS 1:50,000 Antarctic Topo. Ser. Lake Vanda Quadrangle

Climate

Soil climate zone:
Coastal Mountain
Estimated mean annual temperature:
-23 °C
Frozen ground depth:
0 cm
Frozen type:
Frozen comment:

Geology

Geological setting:
The Pecten Gravel deposit was once thought to be a glacial till from an early up valley ice advance but is now thought to represent the deposits formed prior to uplift when Wright Valley was a fjord
Patterned ground:
Nil
Surface weathering or surface features:

Soil

Soil parent material:
Greyish silty layer in gravel deposit
Previous disturbance:
Previous glaciological investigations at the site
Soil weathering stage:
6
Soil moisture status:
Surface is snow free; no soil moistening observed
Biological activity:
Nil observed

Sample Data

Physical Data
Sample nameDepth descriptionTop (cm)Base (cm)Bulk DensityDry Bulk DensityGravimetric MoistureVol. Moisture (BD=2)
368a 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
368a
Clay Mineralogy
Sample nameMicaIHMHIV - IHMICHLVTHIVCHLSMCHL SMFE - CHLHTQTZFLDHBCALNotes
368a :

Photos

Photo record:
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