Site Information

Site number:
515
Authors:
IBC, GGC
Date recorded:
1983/01/21
Reason Sampled:
Soil weathering examination
Description:
Approximately 1km from the eastern end of Battleship Promontory; on an undulating bench like surface; adjacent to some small salty ponds; the area surrounding the ponds has thick surface salt encrustations
Altitude:
1075 m
Aspect:
Nil
Slope:
0 °
Location Data
Observer IBC GGC
GPS No
Latitude Longitude DMS 76° 54.5' S 160° 52.4' E 76° 54.5' S 160° 56' E
Latitude Longitude DD -76.908 160.8730 -76.908 160.933
Latitude longitude precision DD 0.004 0.0008 0.004 0.008
Locality Convoy Range, Trans-antarctic Mountains, Alatna valley
Survey

Climate

Soil climate zone:
Central mountain
Estimated mean annual temperature:
-28 °C
Frozen ground depth:
0 ??
Frozen type:
Frozen comment:
??

Geology

Geological setting:
Ferrar Dolerite and Beacon Sandstone are the local rocks; the surface is part of dolerite sill
Patterned ground:
Nil
Surface weathering or surface features:
Surface rocks have a fresh appearance resulting from salt weathering

Soil

Soil parent material:
Fragmented dolerite
Previous disturbance:
Nil
Soil weathering stage:
6 4 (Campbell & Claridge 1975)
Soil moisture status:
The site is moist and adjacent to a salty pond
Biological activity:
Nil observed
Profile Description
HorizonDepthDescription
515a 0 – 3 cm dark yellowish brown (10YR 3/3 moist) sandy gravel; abundant small salt crystals; rock particles subangular and moderately stained; indistinct boundary,
515b 3 – 10 cm dark yellowish brown (10YR 3/3 moist) sandy gravel; abundant small salt crystals; rock particles unstained; indistinct boundary,
515c 10 – 20 cm dark yellowish brown (10YR 3/3 wet) sandy gravel; slightly sticky; rock particles subangular and unstained,
515d 20 – 30 cm dark yellowish brown (10YR 3/3 wet) sandy gravel; abundant coarse salt crystals

Sample Data

Physical Data
Sample nameDepth descriptionTop (cm)Base (cm)Bulk DensityDry Bulk DensityGravimetric MoistureVol. Moisture (BD=2)
515a 0-3cm 0.0 3.0 No
515b 3-10cm 3.0 10.0 No
515c 10-20cm 10.0 20.0 No
515d 20-30cm 20.0 30.0 No
515e No
515f No
Sample solution chemistry
Sample namepHNa meq/100gCa meq/100gMg meq/100gK meq/100gCl meq/100gSO4 meq/100gNO3 meq/100gEC mmho/cmSoluble SaltNotes
515a 8.0 68.5 14.9 36.0 0.21 31.1 41.0 29.7 15.02 .  
515b 7.93 36.0 6.0 16.5 0.18 16.1 18.3 12.4 7.47 .  
515c 7.9 32.0 1.6 11.7 0.2 13.8 16.7 10.6 6.52 .  
515d 7.83 13.6 7.6 7.6 0.08 5.2 12.3 3.5 3.3 .  
515e                      
515f                      
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
515a 43.0 21.0 11.0 3.0 1.0 17.0 4.0 0.06 .
515b 40.0 21.0 15.0 5.0 2.0 9.0 8.0 0.06 .
515c 37.0 20.0 15.0 6.0 2.0 10.0 9.0 0.06 .
515d 74.0 9.0 5.0 2.0 1.0 9.0 1.0 0.05 .
515e
515f
Clay Mineralogy
Sample nameMicaIHMHIV - IHMICHLVTHIVCHLSMCHL SMFE - CHLHTQTZFLDHBCALNotes
515a disordered mica-smectite:
515b disordered mica-smectite:
515c disordered mica-smectite:
515d disordered mica-smectite:FLD=tr:
515e :
515f :
National Soil Archive Samples
Sample nameNSA Sample IdContainer typeFraction type
515a M22/3760 medium coarse
515a M22/3761 White lid small fine
515a M22/7918 Glass vial metal lid
515b M22/3762 medium coarse
515b M22/3763 medium fine
515b M22/7919 Glass vial metal lid
515c M22/3764 White lid small coarse
515c M22/3765 White lid small fine
515c M22/7920 Glass vial metal lid
515e M22/3766 White lid small coarse
515e M22/3767 medium fine
515e M22/7922 Glass vial metal lid

Photos

Photo record:
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