Site Information

Site number:
400
Authors:
IBC, GGC
Date recorded:
1977/11/28
Reason Sampled:
Soil weathering examination
Description:
A slight mound on the undulating floor of Nibelungen Valley; near a granitic outcrop; approximately 2.5km NW of Panaroma Peak
Altitude:
1425 m
Aspect:
Nil
Slope:
0 °
Location Data
Observer IBC GGC
GPS No
Latitude Longitude DMS 77° 36.5' S 161° 21' E 77° 36.5' S 161° 21' E
Latitude Longitude DD -77.608 161.350 -77.608 161.350
Latitude longitude precision DD 0.004 0.008 0.004 0.008
Locality Wright Valley near the centre of the Asgard Range, to the SW of Lake Vanda in Nibelungen Valley
Survey USGS, Antarctica 1:50,000 Topo. Ser. 1977 Lake Vanda Antarctica

Climate

Soil climate zone:
Central Mountain
Estimated mean annual temperature:
-28 °C
Frozen ground depth:
65 > cm
Frozen type:
Dry frozen
Frozen comment:
>65cm

Geology

Geological setting:
Local outcrops are dominated by Beacon Sandstone and Ferrar Dolerite; glacial sequences are similar to other alpine of the Asgard Range with old sequences of local alpine valley glaciers dominated by sandstone and dolerite; granite outcrops lower down the valley and its presence in the till may indicate up-valley movement
Patterned ground:
Nil
Surface weathering or surface features:
Granite clasts are strongly disaggregated; dolerite is moderately stained and weakly to moderately pitted; sandstone clasts are polished with reddish oxide coatings; moderate ventiforms and some cavernously weathered sandstone

Soil

Soil parent material:
Bouldery till predominantly from granite and with dolerite and sandstone
Previous disturbance:
Nil
Soil weathering stage:
6 4 (Campbell & Claridge 1975)
Soil moisture status:
Few small snow remnants from recent snow falls
Biological activity:
Nil observed
Profile Description
HorizonDepthDescription
400a -2 – 0 cm surface small boulders, pebbles and granular sand; moderate to strong surface staining and some disaggregation
400b 0 – 7 cm brownish yellow (10YR 6/8) sandy to silty gravel; weakly cohesive; rock particles mainly subrounded; weakly stained and slightly altered; indistinct boundary,
400c 7 – 22 cm yellowish brown (10YR 5/8) sandy to silty gravel; moderately cohesive; few to many diffuse salts; some ghosts; most rock particles subangular and non to weakly stained; distinct boundary,
400d 22 – 53 cm olive yellow (2.5Y 6/6) sandy to silty gravel; loose to weakly cohesive; some patches of greyish unoxidised till; a few ghosts but most rock particles subangular, unstained and unaltered; indistinct boundary,
400e 53 – 65 cm olive yellow to brownish yellow (2.5Y 6/6 - 10YR 6/6) sandy gravel

Sample Data

Physical Data
Sample nameDepth descriptionTop (cm)Base (cm)Bulk DensityDry Bulk DensityGravimetric MoistureVol. Moisture (BD=2)
400a 2-0cm -2.0 0.0 No
400b 0-7cm 0.0 7.0 No
400c 7-22cm 7.0 22.0 No
400d 22-53cm 22.0 53.0 No
400e 53-65cm 53.0 65.0 No
400f No
400g No
400h 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
400a
400b
400c
400d
400e
400f
400g
400h
Clay Mineralogy
Sample nameMicaIHMHIV - IHMICHLVTHIVCHLSMCHL SMFE - CHLHTQTZFLDHBCALNotes
400a :
400b :
400c :
400d :
400e :
400f :
400g :
400h :
National Soil Archive Samples
Sample nameNSA Sample IdContainer typeFraction type
400a M22/2262 White lid small coarse
400a M22/2263 White lid small fine
400a M22/7476 Glass vial metal lid
400b M22/2264 White lid small coarse
400b M22/2265 medium fine
400b M22/7477 Glass vial metal lid
400c M22/2266 White lid small coarse
400c M22/2267 medium fine
400c M22/7478 Glass vial metal lid
400d M22/2268 White lid small coarse
400d M22/2269 medium fine
400d M22/7479 Glass vial metal lid
400e M22/2270 White lid small coarse
400e M22/2271 White lid small fine
400e M22/7480 Glass vial metal lid
400f M22/2272 White lid small mixed
400g M22/2273 White lid small mixed
400h M22/2274 White lid small mixed

Photos

Photo record:
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