Site Information

Site number:
Date recorded:
Reason Sampled:
Soil weathering examination
To the north of an un-named peak to the SE of Turnstile Ridge at the head of the Hatherton Glacier (Pk 2421); below a high dolerite remnant plateau surface on the NE escarpment slope; on a steep slope about 150m below the escarpment edge
2250 m
28 °
Location Data
Observer IBC GGC
Latitude Longitude DMS 79° 54' S 155° 04' E 79° 54' S 155° 04' E
Latitude Longitude DD -79.900 155.067 -79.900 155.067
Latitude longitude precision DD 0.008 0.008 0.008 0.008
Locality Hatherton Glacier, Transantarctic Mountains
Survey United States Geological Survey 1966; 1:250,000 Turnstile Ridge, Antarctica


Soil climate zone:
Inland Mountain
Estimated mean annual temperature:
-40 °C
Frozen ground depth:
12 cm
Frozen type:
Hard ice-cemented ground
Frozen comment:


Geological setting:
Ferrar Dolerite outcrops on the high surfaces; the soils on the high surfaces show significant weathering and the slope deposits probably include weathered materials from the upper more stable surfaces
Patterned ground:
Small 4.5m nets with very shallow troughs
Surface weathering or surface features:
A poorly developed pavement of mixed clast size; surface rocks are loose and easily dislodged but no evidence of significant down-slope movement; some clasts with salt encrustations on upper surfaces but most are on the lower surfaces; rocks are mainly subangular and moderately to strongly stained; some exfoliation and granular disintegration; thin patchy salt precipitations on some rock particles


Soil parent material:
Dolerite slope detritus
Previous disturbance:
Soil weathering stage:
6 5 (Campbell & Claridge 1975)
Soil moisture status:
Small patches of snow but no thaw or soil moistening
Biological activity:
Nil observed
Profile Description
430a -3 – 0 cm surface cobbles, small boulders and granular sand; loose; clasts moderately to strongly stained, subangular and many moderately to strongly altered; some thin salt precipitations on rock surfaces,
430b 0 – 10 cm yellowish red (5YR 4/6) granular gravel; loose; few fine salt flecks; rock particles angular to subangular, strongly stained and moderately to strongly altered with red (2.5Y 4/8) pseudomorphs; sharp boundary,
430c 10 – 12 cm brown to dark brown (7.5YR 5/4) granular gravel; firmly frosted; rock particles subangular, moderately stained and some moderately altered; sharp boundary,
430d 12 – 15 cm brown to dark brown (7.5YR 4/4) ice-cemented ground

Sample Data

Physical Data
Sample nameDepth descriptionTop (cm)Base (cm)Bulk DensityDry Bulk DensityGravimetric MoistureVol. Moisture (BD=2)
430a 3-0cm -3.0 0.0 No
430b 0-3cm 0.0 3.0 No
430c 3-12cm 3.0 12.0 No
430d 12-15cm 12.0 15.0 No
430e No
Sample solution chemistry
Sample namepHNa meq/100gCa meq/100gMg meq/100gK meq/100gCl meq/100gSO4 meq/100gNO3 meq/100gEC mmho/cmSoluble SaltNotes
430b 7.1 0.2 0.9 0.3 0.01 0.07 1.07 0.17 1.4 .  
430c 6.6 0.2 0.25 0.1 0.01 0.06 0.52 0.03 0.35 .  
430d 7.3 0.2 1.69 0.4 0.003 0.09 1.77 0.14 0.1 .  
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
430b 54.2 22.7 16.6 3.2 0.7 1.51 0.38 0.55 .
430c 54.2 25.1 14.3 2.2 0.68 2.8 0.24 0.35 .
430d 24.9 33.2 23.1 8.0 5.5 3.7 0.59 0.8 .
Clay Mineralogy
430a :
430b disordered:
430c disordered:
430d disordered:
430e :
National Soil Archive Samples
Sample nameNSA Sample IdContainer typeFraction type
430a M22/2630 large sq coarse
430a M22/2631 White lid small fine
430a M22/7598 Glass vial metal lid
430b M22/2632 White lid small coarse
430b M22/2633 White lid small fine
430b M22/7599 Glass vial metal lid
430c M22/2634 White lid small coarse
430c M22/2635 medium fine
430c M22/7600 Glass vial metal lid
430d M22/2636 White lid small coarse
430d M22/2637 White lid small fine
430d M22/7601 Glass vial metal lid
430e M22/2638 large sq coarse


Photo record: