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Site Information Site number:
322 Authors:
IBC, GGC Date recorded:
1972/11/20 Reason Sampled:
Soil weathering examination Description:
At the snout of Taylor Glacier at its confluence with Lake Bonney; 100m NW of Blood Falls at an exposure of recently deposited till Altitude:
57 m Aspect:
Nil Slope:
0 ° Location Data Observer IBC GGC GPS No Latitude Longitude DMS 77° 43.5' S 162° 16.8' E 77° 43.5' S 162° 16' E Latitude Longitude DD -77.725 162.2800 -77.725 162.267 Latitude longitude precision DD 0.004 0.0008 0.004 0.008 Locality Taylor Dry Valley, McMurdo Dry Valley region, Taylor Glacier Survey USGS 1:50,000 Antarctic Topo. Ser. Lake Bonney Quadrangle
Climate Soil climate zone:
Inland Mountain
Estimated mean annual temperature:
-23
°C Frozen ground depth:
10 cm Frozen type:
Hard ice cemented Frozen comment:
10cm Geology Geological setting:
Till at the snout of Taylor Glacier is very recently deposited and gives a basis for making weathering comparisons with older till deposits Patterned ground:
Nil Surface weathering or surface features:
Soil material lacks weathering features but some freeze/thaw features are present Soil Soil parent material:
Recent till from Taylor Glacier Previous disturbance:
Nil Soil weathering stage:
1 (Campbell & Claridge 1975) Soil moisture status:
Presently dry but probably moistened by later lake edge thaw Biological activity:
Nil observed Profile Description Horizon Depth Description 322a 0 – 10 cm pale olive (5Y 6/3) silty gravel; moderately cohesive; weakly developed vesicular structure; rock particles subrounded and unstained; sharp boundary, on ice-cemented ground
Sample Data Physical Data Sample name Depth description Top (cm) Base (cm) Bulk Density Dry Bulk Density Gravimetric Moisture Vol. Moisture (BD=2) 322 0-10cm 0 10 No
Sample solution chemistry Sample name pH Na meq/100g Ca meq/100g Mg meq/100g K meq/100g Cl meq/100g SO4 meq/100g NO3 meq/100g EC mmho/cmSoluble Salt Notes 322 8.0 3.2 14.0 1.1 0.4 2.1 15.1 0.1 1.8 .
Particle size distribution Sample name < 2 mm 2 - 0.5 mm 0.5 - 0.25 mm 0.25 - 0.1 mm 0.1 - 0.05 mm 0.05 - 0.02 mm 0.02 - 0.002 mm < 0.002 mm Fe2 O3 CaCO3 Notes 322 17.2 17.1 17.8 6.3 10.3 17.0 13.9 0.27 .
Clay Mineralogy Sample name Mica IHM HIV - IHM ICHL VT HIV CHL SM CHL SM FE - CHL HT QTZ FLD HB CAL Notes 322 40.0 . . . 35.0 . . 15.0 . 10.0 . . . . :
Photos Photo record:
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Antarctic Soils Explorer Copyright Manaaki Whenua – Landcare Research © 1996 - 2023
Version: 1.0.146
Copyright Manaaki Whenua – Landcare Research © 1996 - 2023