Site Information

Site number:
545
Authors:
IBC, GGC
Date recorded:
1988/01/14
Reason Sampled:
Soil weathering examination
Description:
New Valley, approximately 3km west of New Mountain on the south side of the upper Taylor Glacier; approximately 4.5km south of Taylor Glacier; on a ridge between Arena Valley and New Valley on an outcrop of dolerite
Altitude:
2000 m
Aspect:
Nil
Slope:
0 °
Location Data
Observer IBC GGC
GPS No
Latitude Longitude DMS 77° 51.8' S 161° 02' E 77° 51.8' S 161° 02' E
Latitude Longitude DD -77.8633 161.033 -77.8633 161.033
Latitude longitude precision DD 0.0008 0.008 0.0008 0.008
Locality Taylor Valley region, Transantarctic Mountains
Survey Ross Island & Vicinity, Antarctica, 1:250 000 US Geological Survey, 1986

Climate

Soil climate zone:
Central Mountain
Estimated mean annual temperature:
-34 °C
Frozen ground depth:
0 cm
Frozen type:
Frozen comment:

Geology

Geological setting:
Dolerite and sandstone outcrop on ridges; the sandstone and dolerite are strongly stained, polished and pitted
Patterned ground:
Nil
Surface weathering or surface features:
Dolerite clasts strongly stained and pitted

Soil

Soil parent material:
Fine fraction between dolerite bedrock clasts
Previous disturbance:
Nil
Soil weathering stage:
4 (Campbell & Claridge 1975)
Soil moisture status:
Xerous to subxerous; occasional light summer snow falls; some small snow patches nearby;
Biological activity:
Nil observed
Profile Description
HorizonDepthDescription
545a 0 – 5 cm reddish yellow (7.5YR 6/6) sandy granule gravel; mmoderately cohesive; moderately developed vesicular structure with some thin silt coatings; larger rock particles tabular and angular and moderately stained with smaller particles rounded; some particles moderately to strongly altered

Sample Data

Physical Data
Sample nameDepth descriptionTop (cm)Base (cm)Bulk DensityDry Bulk DensityGravimetric MoistureVol. Moisture (BD=2)
545a 0-5cm 0.0 5.0 No
Sample solution chemistry
Sample namepHNa meq/100gCa meq/100gMg meq/100gK meq/100gCl meq/100gSO4 meq/100gNO3 meq/100gEC mmho/cmSoluble SaltNotes
545a 8.62 5.4 3.8 1.5 0.2 0.5 . 0.4 0.58 .  
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
545a 23.9 37.8 25.8 1.6 1.9 5.7 2.8 0.5 .
Clay Mineralogy
Sample nameMicaIHMHIV - IHMICHLVTHIVCHLSMCHL SMFE - CHLHTQTZFLDHBCALNotes
545a 21.0 . . . 8.0 . . 5.0 . 41.0 . 10.0 11.0 . mica-smectite 3:

Photos

Photo record:
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