Ross Sea Region Soil Sites

588000

588

30-Jan-1990

IBC, GGGC, MRB

Pram Point, Scott Base, Ross Island

SITE KEY

SITE NO

REASON SAMPLED

DATE RECORDED

AUTHORS

Leaching experiment using lithium chloride tracer to determine rate of leaching; control plot examination

DESCRIPTION

Dept of Interior US Geological Survey 1986

MAP / SURVEY

CS Pro & Lscp

PHOTO RECORD

Yes

166.7610

/

-77.8564

LAT / LONG

77deg 51.38'S

-166deg -45.66'E

/

[ Lat/Long (deg)

]

cf. Notes for DESCR below

ALTITUDE (m)

GEOLOGICAL

SETTING

3

SLOPE (deg)

E

ASPECT

55

cf. Notes for GEOLAND below

TEMPERATURE  (degC)

DEPTH (cm)

Oceanic subxerous; a 'wet' site in a gully below a snow patch which thaws in some years

SOIL MOISTURE STATUS

-18

Est MAT (degC)

Coastal Antarctic

SOIL CLIMATE ZONE

Bouldery till and slope debris predominantly from scoria with minor accessions of sedimentary and granitic rocks

SOIL PARENT MATERIAL

Nil

BIOLOGICAL ACTIVITY

Weakly developed frost heave polygons

PATTERNED GROUND

SURFACE WEATHERING  or

SURFACE FEATURES

PREVIOUS DISTURBANCE

Nil

PROFILE DESCRIPTION

588a 0-5cm

101

 light brownish grey to greyish brown (2.5Y 6/2 - 5/2) cobbly sandy scoria gravel

Part

102

 loose

Part

103

 rock particles subrounded and unstained

Part

104

 indistinct boundary,

Part

588b 5-10cm

201

 light brownish grey (2.5Y 6/2) cobbly sandy scoria gravel

Part

202

 weakly cohesive

Part

203

 moist

Part

204

 smaller rock particles subrounded

Part

205

 indistinct boundary,

Part

588c 10-15cm

301

 light brownish grey (2.5Y 6/2) cobbly sandy scoria gravel

Part

302

 moderately cohesive

Part

303

 moist

Part

304

 smaller rock particles subrounded

Part

305

 indistinct boundary,

Part

588d 15-20cm

401

 light brownish grey (2.5Y 6/2) cobbly sandy scoria gravel

Part

402

 moderately cohesive

Part

403

 moist

Part

404

 smaller rock particles subrounded

Part

405

 indistinct boundary,

Part

588e 20-25cm

501

 light brownish grey (2.5Y 6/20 cobbly sandy scoria gravel

Part

502

 moderately cohesive

Part

503

 moist

Part

504

 smaller rock particles subrounded

Part

505

 sharp boundary, drill core in ice-cemented ground

Part

588f 25-31cm

601

 [ greyish brown (2.5Y 5/2) angular scoria gravel

Part

588g 31-45cm

701

 [ greyish brown (2.5Y 5/2) angular scoria gravel

Part

588h 45-47cm

801

 [ greyish brown (2.5Y 5/2) angular scoria gravel

Part

Yes

SAMPLES

a,b,c,d,e,f,g,h

Med

Hi

/

Hard ice-cemented

FROZEN TYPE

25

FROZEN GROUND DEPTH(cm)

1

SOIL WEATHERING STAGE

(25cm)

Notes:

Descr

Approximately 350m northwest of the western end of Scott Base in the floor of a shallow gully, 20m NW of site 587 and 3-4m lower in altitude; about 50m

north of the Scott Base to McMurdo Station; at this site, 4 contiguous 1m X 1m plots were set out and 3 irrigated with LiCl, the 4th (northernmost) with H2O;

this sampling was from the control plot

Geoland

Rocks are predominantly scoria flows of the McMurdo Volcanics; Last Glaciation Ross 1 ice covered the site and traces of rocks (sandstone and granite granules

and small pebbles) probably from the Royal Society Range can be found; the drift mantle is thin and patchy with bedrock a little below the surface

Seive

Size

Vol. Moisture

Drill Vol

Vol. Moisture

(BD=2)

Soluble Salt

Concentration

Gravimetric

Moisture

Particle

Size

Dry Bulk

Density

Bulk

Density

Base

(cm)

Top

(cm)

Depth

description

Sample

name

Sample

Key

Physical Data:

58800001

588a

0-5cm

0

5

50.00

10.20

none

58800002

588b

5-10cm

5

10

38.60

6.10

none

58800003

588c

10-15cm

10

15

43.00

8.30

none

58800004

588d

15-20cm

15

20

37.00

7.40

none

58800005

588e

20-25cm

20

25

35.00

6.60

none

58800006

588f

25-31cm

25

31

40.00

31.40

none

58800007

588g

31-45cm

31

45

36.00

28.80

none

58800008

588h

45-47cm

45

47

60.00

36.70

none

Notes

Grav.

M. Cont

Fe2O3

Part. Size

<0.002

Part. Size

0.02-0.002

Part. Size

0.05-0.02

Part. Size

0.1-0.05

Part. Size

0.25-0.1

Part. Size

0.5-0.25

Part. Size

2-0.5

Part. Size

<2mm

Sample

Key

Particle Size:

58800001

50.40

44.10

19.50

16.30

6.00

4.50

7.10

2.20

0.30

58800002

38.60

50.50

18.40

14.20

5.50

3.70

5.40

2.10

0.30

58800003

43.30

43.00

20.50

17.40

5.80

3.30

7.10

2.70

0.30

58800004

37.30

42.60

21.80

17.00

5.30

3.00

6.70

3.30

0.30

58800005

34.70

50.70

17.90

14.20

4.80

3.10

6.00

3.00

0.30

58800006

39.80

19.50

18.80

22.30

12.90

13.50

9.70

2.60

0.70

58800007

23.00

12.50

13.50

19.10

13.40

16.60

20.70

2.90

1.10

58800008

59.70

15.80

13.90

22.20

16.30

17.20

10.60

2.50

1.40

Notes

NO3

meq/100g

SO4

meq/100g

Cl

meq/100g

K

meq/100g

Mg

meq/100g

Ca

meq/100g

Na

meq/100g

EC

mmho/cm

pH

Solution Chemistry:

Sample

Key

58800001

8.60

0.12

0.61

0.11

0.02

0.25

0.17

0.06

58800002

8.60

0.07

0.39

0.11

0.02

0.08

0.14

0.13

58800003

8.60

0.07

0.52

0.05

0.08

0.07

0.04

58800004

8.70

0.08

0.51

0.12

0.03

0.08

0.14

0.11

58800005

8.80

0.08

0.54

0.19

0.04

0.08

0.21

0.10

58800006

9.20

0.16

0.99

0.03

0.08

0.19

0.34

0.17

0.01

58800007

9.30

0.23

1.21

0.01

0.07

0.03

0.50

0.23

58800008

9.30

0.25

1.51

0.02

0.51

0.04

0.59

0.26

0.01

CAL

HB

FLD

QTZ

HT

FE -

CHL

SM

CHL

HIV

VT

ICHL

HIV -

IHM

IHM

MICA

Notes

Sample

Key

Clay Mineralogy:

58800001

40

30

10

58800002

40

10

20

10

58800003

30

15

20

15

58800004

45

5

30

2

3

58800005

40

10

35

2

3

58800006

58800007

58800008

12-Dec-2005

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