Browse Data | 1964 - Hallett Peninsula

30

Site Information

Site number:: 30

Authors:: IBC, GGC

Date recorded:: 1964/11/03

Reason Sampled:: Weathering examination

Description:: A short scree slope on an outcrop of tuffite on the lower slopes of Redcastle ridge, above the terrace and fan surfaces

Altitude:: 100 m

Aspect:: NW

Slope:: 10 °

Location Data
Observer	IBC
GPS	No
Latitude Longitude DMS	72° 26' S 169° 58' E
Latitude Longitude DD	-72.433 169.967
Latitude longitude precision DD	0.008 0.008
Locality	Northern Victoria Land near Hallett Peninsula; at Redcastle Ridge between the Arneb and Edisto Glaciers
Survey	MZMS 166; 1960 Tucker Glacier

Climate

Soil climate zone:: Coastal Antarctic

Estimated mean annual temperature:: -16 °C

Frozen ground depth:: 0 NoObs

Frozen type:: NoObs

Frozen comment:: NoObs

Geology

Geological setting:: Tuffite of the McMurdo Volcanics Group is interbedded with scoriaceous basalt and outcrops in places

Patterned ground:: Nil

Surface weathering or surface features:: Angular surface pebbles and cobbles forming a protective pavement over softer tuffite

Soil

Soil parent material:: A thin layer of disaggregated tuffite, mantled with a veneer of harder flow basalt fragments, over compact tuffite

Previous disturbance:: Nil

Soil weathering stage:: 1 (Campbell & Claridge 1975)

Soil moisture status:: Oceanic subxerous, moisture from thawing of intermittent surface snow cover

Biological activity:: Nil observed

Profile Description
Horizon	Depth	Description
30a	0 – 10 cm	strong brown to brown (7.5YR 5/6-4/4) gravelly sand; loose; small flecks of salt present; subangular to subrounded scoria and basalt fragments; abrupt boundary, on compact tuffite

Sample Data

Physical Data
Sample name	Depth description	Top (cm)	Base (cm)	Bulk Density	Dry Bulk Density	Gravimetric Moisture	Vol. Moisture (BD=2)
30a	0-10cm	0.0	10.0

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/cm	Soluble Salt	Notes
30a	8.8	17.0	0.8	0.7	0.01	10.7	2.1	<0.05	.	2.1

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	Fe₂O₃	CaCO₃	Notes
30a	67	40.2	18.0	18.6	6.7	9.3	5.9	0.7	0.7	.

Clay Mineralogy
Sample name	Mica	IHM	HIV - IHM	ICHL	VT	HIV	CHL	SM	CHL SM	FE - CHL	HT	QTZ	FLD	HB	CAL	Notes
30a	.	.	.	.	.	.	.	.	.	.	.	.	.	.		glasses and short range order minerals

Photos

Photo record:

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