Site Information

Site number:
755h
Authors:
IBC, GGC, DSS
Date recorded:
1994/01/12
Reason Sampled:
Soil contamination studies Vanda Station from a series of sites spaced 1m apart; to determine if contaminants are being redistributed through the soils as a result of capillary movement and evaporation of moisture
Description:
VT2 h; second traverse commencing 6m from the lake edge at the mouth of greywater gully, approximately 50m east of the Vanda Station buildings; 8 samples collected at 1m intervals from near the lake edge, in a westerly direction across the wetting front
Altitude:
93 m
Aspect:
SE
Slope:
6 °
Location Data
Observer IBC
GPS No
Latitude Longitude DMS 77° 31.3' S 161° 40.4' E
Latitude Longitude DD -77.5217 161.6730
Latitude longitude precision DD 0.0008 0.0008
Locality Vanda Station, Wright Valley
Survey not recorded

Climate

Soil climate zone:
Central Mountain
Estimated mean annual temperature:
-20 °C
Frozen ground depth:
0 cm
Frozen type:
Frozen comment:

Geology

Geological setting:
The rocks of the area are granodiorites that have been cut with lamprophyre dykes and form a strongly undulating ridge and gully topography as a result of ice over riding from down-valley and up-valley glaciations, and to a lesser extent, of subaerial weathering; subsequent to glaciation, the terrain has been subjected to submergence and emergence from fluctuating lake water levels from Lake Vanda with some associated sorting and resorting of surface materials; bedrock is at shallow depth on the gully floor
Patterned ground:
Nil
Surface weathering or surface features:
A loose granular to small pebble pavement between common granodiorite and lamprophyre surface cobbles

Soil

Soil parent material:
Cobbly granular sand over granodiorite bedrock
Previous disturbance:
Disturbance from previous activities at Vanda Station includes trampling and some accumulation of foreign materials
Soil weathering stage:
6 1 (Campbell & Claridge 1975)
Soil moisture status:
Xerous; the soil is saturated by rising lake waters near the lake edge but is dry 8m away at the up-slope sample site
Biological activity:
None observed

Sample Data

Physical Data
Sample nameDepth descriptionTop (cm)Base (cm)Bulk DensityDry Bulk DensityGravimetric MoistureVol. Moisture (BD=2)
755h
National Soil Archive Samples
Sample nameNSA Sample IdContainer typeFraction type
755h M22/4320 White lid small oven dry
755h M22/4321 medium fine
755h M22/4319 large mixed

Photos

Photo record:
Loading...