Browse Data | 1972 - Wright Valley / Taylor Dry Valley

⇚ 321 |

322

| 323 ⇛

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:: 6 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/cm	Soluble 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	Fe₂O₃	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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