On an east/west trending portion of Ackerman Ridge on a bouldery granitic surface
Altitude:
1850 m
Aspect:
Slope:
0 °
Location Data
Observer
IBC
GGC
GPS
No
Latitude Longitude DMS
86° 33.5' S 147° 58' W
86° 33' S 147° 58' W
Latitude Longitude DD
-86.558 -147.967
-86.550 -147.967
Latitude longitude precision DD
0.004 0.008
0.008 0.008
Locality
Scott Glacier region, southern Trans-antarctic Mountains on Ackerman Ridge
Survey
US Geological Survey 1:250 000, 1968, Mount Blackburn
Climate
Soil climate zone:
Inland Mountain
Estimated mean annual temperature:
-40
°C
Frozen ground depth:
60 > cm
Frozen type:
Dry-frozen
Frozen comment:
>60cm
Geology
Geological setting:
Rocks in the area are argillites and granites; with increasing altitude, younger tills with minimal weathering give way to patchy weathered residual till and bedrock
Patterned ground:
Nil
Surface weathering or surface features:
Surface boulders a mixture of angular and rounded but strongly stained
strong brown (7.5YR 5/8) granular to bouldery gravel; weakly cohesive with a distinctly developed surface crust; moderately developed vesicular structure with secondary non-calcareous cementing; many distinct white salt accumulations; rock particles mainly angular, stained and altered with many secondary oxide coatings; distinct boundary,
222b
5 – 12 cm
strong brown (7.5YR 5/8) sandy granular to bouldery gravel; weakly cohesive; few white salt precipitations; rock particles mainly angular, stained and altered with many secondary oxide coatings; distinct boundary,
222c
12 – 18 cm
strong brown (7.5YR 5/6) sandy granular to bouldery gravel; loose; many distinct white salt accumulations; many small gypsum crystals; rock particles mainly angular, stained and altered with many secondary oxide coatings; indistinct boundary,
222d
36 – 40 cm
brown to dark brown (7.5YR 4/4) angular fragmented bedrock with fine fraction in joints; lose; scattered salts; rock particles angular, altered and readily disaggregated