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Site Information Site number:
120 Authors:
IBC, GGC Date recorded:
1965/01/06 Reason Sampled:
Weathering examination Description:
The southwest end of the Brown Hills on Bastion Hill; an outcrop of dolerite on the north side of Bastion Hill Altitude:
1350 m Aspect:
N Slope:
4 ° Location Data Observer IBC GPS No Latitude Longitude DMS 79° 50' S 158° 18' E Latitude Longitude DD -79.83 158.300 Latitude longitude precision DD 0.08 0.008 Locality Victoria Land, Trans-antarctic Mountains; at the southern end of the Cook Mountains in the Brown Hills region of the Darwin Glacier Survey USGS 1:250,000 1963; Carlyon Glacier ST 57-60/13*
Climate Soil climate zone:
Coastal mountain
Estimated mean annual temperature:
-28
°C Frozen ground depth:
0 cm Frozen type:
Frozen comment:
Geology Geological setting:
A dolerite outcrop on Bastion Hill; detritus derived from disaggregated dolerite in places has a crust of fine textured material Patterned ground:
Surface weathering or surface features:
A surface crust formed partly as a result of the accumulation of fine textured material Soil Soil parent material:
Fine accumulation, possibly wind sorted, of doleritic material Previous disturbance:
Nil Soil weathering stage:
3 (Campbell & Claridge 1975) Soil moisture status:
Oceanic subxerous; some snow patches on ridges and snow was currently falling Biological activity:
Nil observed Profile Description Horizon Depth Description 120a 0 – 5 cm brownish yellow (10YR 5/6) silty granular pebbly gravel; firmly cohesive; strongly developed vesicular structure; rock particles subangular weakly to moderately stained and coated with fines; some rock particles moderately altered
Sample Data Physical Data Sample name Depth description Top (cm) Base (cm) Bulk Density Dry Bulk Density Gravimetric Moisture Vol. Moisture (BD=2) 120 0-5cm 0 5
Sample solution chemistry Sample name pH Na meq/100g Ca meq/100g Mg meq/100g K meq/100g Cl meq/100g SO4 meq/100g NO3 meq/100g EC mmho/cmSoluble Salt Notes 120 7.0 0.8 0.5 0.1 0.05 0.1 1.5 0.2 . 0.5
Particle size distribution Sample name < 2 mm 2 - 0.5 mm 0.5 - 0.25 mm 0.25 - 0.1 mm 0.1 - 0.05 mm 0.05 - 0.02 mm 0.02 - 0.002 mm < 0.002 mm Fe2 O3 CaCO3 Notes 120 54 43.5 20.5 16.5 3.5 4.8 . 0.7 .
National Soil Archive Samples Sample name NSA Sample Id Container type Fraction type 120 M22/0849 medium coarse 120 M22/0850 medium fine 120 M22/6908 Glass vial metal lid
Photos Photo record:
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Antarctic Soils Explorer Copyright Manaaki Whenua – Landcare Research © 1996 - 2023
Version: 1.0.146
Copyright Manaaki Whenua – Landcare Research © 1996 - 2023