Site Information

Site number:
486
Authors:
IBC, GGC
Date recorded:
1983/01/02
Reason Sampled:
Soil weathering examination
Description:
Southern Hut Point Peninsula approximately 1km northwest of Scott Base and .5km south of Crater Hill; on a gently sloping terrace like surface north of the Scott Base-McMurdo road
Altitude:
170 m
Aspect:
SW
Slope:
2 °
Location Data
Observer IBC GGC
GPS No
Latitude Longitude DMS 77° 50' S 166° 42' E 77° 50' 45" S 166° 42' 15" E
Latitude Longitude DD -77.83 166.700 -77.8458 166.7042
Latitude longitude precision DD 0.08 0.008 0.0009 0.0009
Locality Ross Island; McMurdo Sound
Survey

Climate

Soil climate zone:
Coastal Antarctic
Estimated mean annual temperature:
-18 °C
Frozen ground depth:
0 cm
Frozen type:
Frozen comment:

Geology

Geological setting:
The rocks of the area are McMurdo Volcanics, predominantly scoria; the surface materials are thin scoria drift material with some accessions of sedimentary and crystalline rocks derived via glacial activity from the mainland
Patterned ground:
Weakly developed broad nets
Surface weathering or surface features:
A moderately bouldery surface with a weakly developed pavement; some carbonate coatings beneath surface clasts

Soil

Soil parent material:
Volcanic drift material; possibly includes some wind- blown fines
Previous disturbance:
Some local construction activity
Soil weathering stage:
6 1 (Campbell & Claridge 1975)
Soil moisture status:
Oceanic xerous; the site is dry
Biological activity:
Nil observed
Profile Description
HorizonDepthDescription
486a -1 – 0 cm surface boulders and sandy gravel; loose; unstained; some smaller particles subrounded but larger clasts subangular; a few carbonate coatings,
486b 0 – 1 cm light brown (10YR 6/3) sandy to silty gravel; weakly cohesive; weakly developed vesicular structure; rock particles subangular with some smaller particles subrounded

Sample Data

Physical Data
Sample nameDepth descriptionTop (cm)Base (cm)Bulk DensityDry Bulk DensityGravimetric MoistureVol. Moisture (BD=2)
486a 1-0cm -1.0 0.0 No
486b 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
486a
486b
Clay Mineralogy
Sample nameMicaIHMHIV - IHMICHLVTHIVCHLSMCHL SMFE - CHLHTQTZFLDHBCALNotes
486a :
486b :
National Soil Archive Samples
Sample nameNSA Sample IdContainer typeFraction type
486a M22/3455 large sq coarse
486a M22/3456 White lid small fine
486a M22/7781 Glass vial metal lid
486b M22/3457 medium coarse
486b M22/3458 medium fine
486b M22/7782 Glass vial metal lid

Photos

Photo record:
Loading...