Site Information

Site number:
356
Authors:
IBC, GGC
Date recorded:
1972/12/08
Reason Sampled:
Soil salt examination
Description:
On the floor of Wright Valley, in the South Fork at Don Juan Pond; the sample site is near the western end; near a wet area with extensive salt precipitations
Altitude:
175 m
Aspect:
Nil
Slope:
0 °
Location Data
Observer IBC GGC
GPS No
Latitude Longitude DMS 77° 34' S 161° 10' E 77° 34' S 161° 13' E
Latitude Longitude DD -77.567 161.17 -77.567 161.217
Latitude longitude precision DD 0.008 0.08 0.008 0.008
Locality Wright Valley, McMurdo Dry Valley region, near Lake Vanda
Survey USGS 1:50,000 Antarctic Topo. Ser. Lake Vanda Quadrangle

Climate

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

Geology

Geological setting:
Don Juan Pond is a saline calcium chloride enriched hollow which varies in wetness, but at the time of sampling was wet only in a small area;
Patterned ground:
Nil
Surface weathering or surface features:
Extensive surface salt precipitations

Soil

Soil parent material:
Salt samples only
Previous disturbance:
Nil at site; the area was examined previously by many people
Soil weathering stage:
6
Soil moisture status:
A wet saline area
Biological activity:
Nil observed
Profile Description
HorizonDepthDescription
356a -1 – 0 cm surface salts precipitation; moist; profuse crystalline salts,
356b 0 – 1 cm surface salts; moist; profuse crystalline salts

Sample Data

Physical Data
Sample nameDepth descriptionTop (cm)Base (cm)Bulk DensityDry Bulk DensityGravimetric MoistureVol. Moisture (BD=2)
356a 1-0cm -1.0 0.0 No
356b 0-1cm 0.0 1.0 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
356a
356b
Clay Mineralogy
Sample nameMicaIHMHIV - IHMICHLVTHIVCHLSMCHL SMFE - CHLHTQTZFLDHBCALNotes
356a :
356b :

Photos

Photo record:
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