Site Information

Site number:
424
Authors:
IBC, GGC
Date recorded:
1978/11/13
Reason Sampled:
Soil weathering examination
Description:
On the south side of Diamond Hill, approximately 4.5km to the SW; on the side of a broad sloping bench and shallow ridge on a very bouldery young moraine surface
Altitude:
450 m
Aspect:
S
Slope:
22 °
Location Data
Observer IBC GGC
GPS No
Latitude Longitude DMS 79° 53.6' S 159° 06' E 79° 55' S 159° 06' E
Latitude Longitude DD -79.8933 159.100 -79.92 159.100
Latitude longitude precision DD 0.0008 0.008 0.04 0.008
Locality Darwin Glacier/Hatherton Glacier, Transantarctic Mountains
Survey United States Geological Survey 1966; 1:250,000 Carlyon Glacier Antarctica

Climate

Soil climate zone:
Central Mountain
Estimated mean annual temperature:
-24 °C
Frozen ground depth:
35 cm
Frozen type:
Hard ice-cemented
Frozen comment:
35cm

Geology

Geological setting:
Local rocks are granites and gneiss but till covers the lower slopes and includes some dolerite and sandstone
Patterned ground:
Weakly developed broad nets; possible solifluction lobes on steeper slopes
Surface weathering or surface features:
Some larger rocks spalling and moving apart by ice wedging; many rocks are moderately stained and partly rounded; granular disintegration and pitting, cavernous weathering and ventiforms are negligible; non pavementic

Soil

Soil parent material:
Bouldery till with mixed lithology
Previous disturbance:
Nil
Soil weathering stage:
6 3 (Campbell & Claridge 1975)
Soil moisture status:
Patchy snow cover from recent fall with thawing at edges and localized soil moistening
Biological activity:
Nil observed
Profile Description
HorizonDepthDescription
424a -3 – 0 cm surface bouldery sandy granular gravel; rock particles subrounded to angular; predominantly unstained,
424b 0 – 4 cm light olive brown (2.5Y 5/4) stony sandy gravel; weakly cohesive; weakly developed vesicular structure; a few pale siltyish coatings; rock particles angular and unstained; some gneissic rocks partly crumbled; indistinct boundary,
424c 4 – 20 cm light olive brown (2.5Y 5/4) bouldery sandy gravel; loose; rock particles angular and unstained but some with relict oxide coatings; some carbonate coatings; distinct boundary,
424d 20 – 35 cm olive (5Y 5/3) bouldery sandy gravel; moderately cohesive, frosted; rock particles angular and unstained; sharp boundary,
424e 35 – 40 cm olive (5Y 4/3 moist) ice cemented sandy gravel; sharp boundary,

Sample Data

Physical Data
Sample nameDepth descriptionTop (cm)Base (cm)Bulk DensityDry Bulk DensityGravimetric MoistureVol. Moisture (BD=2)
424a 3-0cm -3.0 0.0 No
424b 0-4cm 0.0 4.0 No
424c 4-20cm 4.0 20.0 No
424d 20-35cm 20.0 35.0 No
424e 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
424a
424b
424c
424d
424e
Clay Mineralogy
Sample nameMicaIHMHIV - IHMICHLVTHIVCHLSMCHL SMFE - CHLHTQTZFLDHBCALNotes
424a :
424b :
424c :
424d :
424e :
National Soil Archive Samples
Sample nameNSA Sample IdContainer typeFraction type
424a M22/2577 large sq coarse
424a M22/2578 White lid small fine
424a M22/7571 Glass vial metal lid
424b M22/2579 White lid small coarse
424b M22/2580 White lid small fine
424b M22/7572 Glass vial metal lid
424c M22/2581 White lid small coarse
424c M22/2582 medium fine
424c M22/7573 Glass vial metal lid
424d M22/2583 medium coarse
424d M22/2584 White lid small fine
424d M22/7574 Glass vial metal lid
424e M22/2585 White lid small coarse
424e M22/2586 White lid small fine
424e M22/7575 Glass vial metal lid

Photos

Photo record:
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