The Geochemical Landscape of Northwestern Wisconsin and Adjacent Parts of Northern Michigan and Minnesota (Geochemical Data Files)

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Frequently-anticipated questions:

What does this data set describe?

Title:

The Geochemical Landscape of Northwestern Wisconsin and Adjacent Parts of Northern Michigan and Minnesota (Geochemical Data Files)

Abstract:

This report contains geochemical data gathered in the Ashland and Rice Lake 1 degree x 2 degree quadrangles in northern Wisconsin and adjacent parts of northern Michigan and Minnesota. The data, in part, is focused on the Chequamegon National Forest. Nine files are presented which contain more than 2,600 multi-element analyses of soils, stream sediments, and lake-bottom sediments.

Data include a mixture of newly acquired data by the USGS and previously reported data from the National Uranium Resource Evaluation (NURE) program. The report thus provides a single-source summary in similar and consistent format of a majority of currently available analyses of surficial materials in this region. Files are presented in DBF format which can be readily imported to GIS programs such as Arcview, and as MS-Excel spreadsheets.

The files include: 

 
A_soil--326 analyses of A-horizon soils (new USGS data)
B_soil--44 analyses of B-horizon soils (new USGS data)
C_soil--455 analyses of C-horizon soils (new USGS data)
E_soil--35 analyses of E-horizon soils (new USGS data)
USGS_ls--96 analyses of lake-bottom sediments (new USGS data)
NURE_ls--361 analyses of lake-bottom sediments (NURE data)
NURE_original--913 analyses of stream sediments (NURE data)
NURE_rean--400 reanalyses of NURE stream sediments (new USGS data)
NUREss_adj--913 stream sediment analyses from the NURE data recalculated based on comparison with NURE_rean results

Together, these data serve to describe the complexity of the surficial geochemical landscape of the glaciated terranes of this part of the Lake Superior region. Both graphic displays, as in Arcview, and statistical analyses can be conducted to meet a variety of end-user needs and address a multitude of environmental and resource issues.

Supplemental_Information: 

 
This data set consists of the following dBase and equivalent MS Excel spreadsheets:
A_soil.dbf:  326 multi-element chemical analyses of A-horizon soils
B_soil.dbf:  44 multi-element chemical analyses of B-horizon soils
C_soil.dbf:  455 multi-element chemical analyses of C-horizon soils
E_soil.dbf:  35 multi-element chemical analyses of E-horizon soils
NURE_original.dbf:  913 multi-element chemical analyses of stream sediments
NURE_rean.dbf:  400 multi-element chemical analyses of stream sediments
NUREss_adj.dbf:  913 recalculated chemical analyses of stream sediments
USGS_ls.dbf: 96 multi-element analyses of lake-bottom sediments
NURE_ls.dbf: 361 multi-element analyses of lake-bottom sediments
  1. How should this data set be cited?

Cannon, William F. , and Woodruff, Laurel G. , 2003, The Geochemical Landscape of Northwestern Wisconsin and Adjacent Parts of Northern Michigan and Minnesota (Geochemical Data Files): U.S. Geological Survey open-file report 03-xx, U.S. Geological Survey, Reston VA.

2.      What geographic area does the data set cover?

West_Bounding_Coordinate: -92.0000

East_Bounding_Coordinate: -90.0000

North_Bounding_Coordinate: 47.0000

South_Bounding_Coordinate: 45.0000

3.      What does it look like?

Sample location map (jpeg)

Map showing the location of study area and distribution of soil, stream sediment and lake sediment samples for which analyses are reported.

4.      Does the data set describe conditions during a particular time period?

Beginning_Date: 1978

Ending_Date: 2000

Currentness_Reference:

Data were acquired over a span of more than 20 years. Data in NURE_original and NURE_ls are analyses done in 1978-79 on samples collected those same years. Data in A_soil, B_soil, C_soil, an E_soil are analyses done from 1997-2000 on samples collected from about 1985-1990 for Forest Service samples and from 1996-2000 for USGS samples. Data in NURE_rean are analyses conducted in 1997. Data in USGS_lsed are analyses conducted in 2000 on samples collected that same year.

5.      What is the general form of this data set?

Geospatial_Data_Presentation_Form: data points

6.      How does the data set represent geographic features?

    1. How are geographic features stored in the data set?

It contains the following vector data types (SDTS terminology):

      • point

b.      What coordinate system is used to represent geographic features?

Horizontal positions are specified in geographic coordinates, that is, latitude and longitude. Latitudes are given to the nearest 0.0001. Longitudes are given to the nearest 0.0001. Latitude and longitude values are specified in decimal degrees.

7.      How does the data set describe geographic features?

A_soil.dbf

Multi-element chemical analyses for A-horizon soil samples. Includes site ID and lat/long. Quantitative results for 31 elements. 11 additional elements were analyzed but reported below detection limit for 90% to 100% of samples tested. Those elements and their detection limits in parts per million are: Ag(2), Au(8), Be(1), Bi(50), Cd(2), Eu(2), Ho(4), Mo(2), Sn(50), Ta(40), U(100).

Sample_no

Unique identification number for sample

SAMP_SOURC

Agency responsible for sample collection

Value

Definition

FS

USDA Forest Service

USGS

U.S. Geological Survey

X_COORD

Longitude of sample site

Range of values

Minimum:

-90

Maximum:

-92

Units:

decimal degrees

Resolution:

0.0001

Y_COORD

Attribute_Domain_Values

DEPTH_AVE

Average depth of interval sampled

Range of values

Minimum:

0.50

Maximum:

36.50

Units:

inches

Resolution:

1

Depth_rng

depth of top and bottom of sampled interval in inches

HORIZON

designation of soil horizon

AL

concentration of aluminum in percent determined by inductively couple plasma atomic emission spectroscopy

Range of values

Minimum:

1.105

Maximum:

8.385

Units:

weight percent

Resolution:

0.001

AS

concentration of arsenic in parts per million determined by hydride generation atomic absorption spectroscopy

Range of values

Minimum:

1.20

Maximum:

13.40

Units:

parts per million

Resolution:

0.01

BA

concentration of barium in parts per million determined by inductively coupled plasma atomic emission spectroscopy

Range of values

Minimum:

212

Maximum:

1250

Units:

parts per million

Resolution:

1

CA

concentration of calcium in percent determined by inductively coupled plasma atomic emission spectroscopy

Range of values

Minimum:

0.075

Maximum:

3.084

Units:

weight percent

Resolution:

0.001

CE

concentration of cerium in parts per million determined by inductively coupled plasma atomic emission spectroscopy

Range of values

Minimum:

19

Maximum:

97

Units:

parts per million

Resolution:

1

CO

concentration of cobalt in parts per million determined by inductively coupled plasma atomic emission spectroscopy. Values of 1 indicate below detection limit.

Value

Definition

1

Proxy value assigned to samples reporting less than the 2 ppm detection limit

 

Range of values

Minimum:

1

Maximum:

38

Units:

parts per million

Resolution:

1

CR

concentration of chromium in parts per million determined by inductively coupled plasma atomic emission spectroscopy

Range of values

Minimum:

1

Maximum:

876

Units:

parts per million

Resolution:

1

CU

concentration of copper in parts per million determined by inductively coupled plasma atomic emission spectroscopy

Range of values

Minimum:

3

Maximum:

155

Units:

parts per million

Resolution:

1

FE

concentration of iron in percent determined by inductively coupled plasma atomic emission spectroscopy

Range of values

Minimum:

0.42

Maximum:

7.24

Units:

weight percent

Resolution:

0.01

Ga

concentration of gallium in parts per million determined by inductively coupled plasma atomic emission spectroscopy. Values of 3 indicate below detection limit.

Value

Definition

3

Proxy value for samples reporting less than the detection limit of 4 ppm

 

Range of values

Minimum:

3

Maximum:

26

Units:

parts per million

Resolution:

1

Hg

concentration of total mercury in parts per million determined by cold vapor atomic absorption spectroscopy. Values of 0.01 indicate below detection limit of 0.02 ppm.

Value

Definition

0.01

Proxy value for samples reporting less than the detection limit of 0.02 ppm

 

Range of values

Minimum:

0.01

Maximum:

0.30

Units:

parts per million

Resolution:

0.01

K

concentration of potassium in percent determined by inductively coupled plasma atomic emission spectroscopy

Range of values

Minimum:

0.72

Maximum:

2.23

Units:

weight percent

Resolution:

0.01

LA

concentration of lanthanum in parts per million determined by inductively coupled plasma atomic emission spectroscopy

Range of values

Minimum:

9

Maximum:

44

Units:

parts per million

Resolution:

1

LI

concentration of lithium in parts per million determined by inductively coupled plasma atomic emission spectroscopy

Range of values

Minimum:

3

Maximum:

35

Units:

parts per million

Resolution:

1

MG

concentration of magnesium in weight percent determined by inductively coupled plasma atomic emission spectroscopy

Range of values

Minimum:

0.039

Maximum:

1.520

Units:

weight percent

Resolution:

0.001

MN

concentration of manganese in parts per million determined by inductively coupled plasma atomic emission spectroscopy

Range of values

Minimum:

56

Maximum:

6610

Units:

parts per million

Resolution:

1

NA

concentration of sodium in weight percent determined by inductively coupled plasma atomic emission spectroscopy

Range of values

Minimum:

0.135

Maximum:

1.174

Units:

weight percent

Resolution:

0.001

NB

concentration of niobium in parts per million determined by inductively coupled plasma atomic emission spectroscopy. Values of 3 indicate below detection limit.

Value

Definition

3

proxy value assigned to samples reporting less than 4 ppm detection limit

 

Range of values

Minimum:

6

Maximum:

16

Units:

parts per million

Resolution:

1

ND

concentration of neodymium in parts per million determined by inductively coupled plasma atomic emission spectroscopy. Values of 5 indicate below detection limit.

Value

Definition

5

proxy values assigned to samples reporting less than 9 ppm detection limit

 

Range of values

Minimum:

5

Maximum:

41

Units:

parts per million

Resolution:

1

NI

concentration of nickel in parts per million determined by inductively coupled plasma atomic emission spectroscopy. Values of 2 indicate below detection limit.

Value

Definition

2

proxy value assigned samples reporting less than 3 ppm detection limit

 

Range of values

Minimum:

2

Maximum:

82

Units:

parts per million

Resolution:

1

P

concentration of phosphorous in weight percent determined by inductively coupled plasma atomic emission spectroscopy

Range of values

Minimum:

0.005

Maximum:

0.514

Units:

weight percent

Resolution:

1

PB

concentration of lead in parts per million determined by inductively coupled plasma atomic emission spectroscopy

Range of values

Minimum:

3

Maximum:

64

Units:

parts per million

Resolution:

1

SC

concentration of scandium in parts per million determined by inductively coupled plasma atomic emission spectroscopy. Values of 1 indicate below detection limit.

Value

Definition

1

proxy value assigned to samples reporting less than 2 ppm detection limit

 

Range of values

Minimum:

1

Maximum:

22

Units:

parts per million

Resolution:

1

SE

concentration of selenium in parts per million determined by hydride generation atomic absorption spectroscopy

Range of values

Minimum:

0.10

Maximum:

2.00

Units:

parts per million

Resolution:

0.01

SR

concentration of strontium in parts per million determined by inductively coupled plasma atomic emission spectroscopy

Range of values

Minimum:

30

Maximum:

141

Units:

parts per million

Resolution:

1

TH

concentration of thorium in parts per million determined by inductively coupled plasma atomic emission spectroscopy. Values of 4 indicate below detection limit.

Value

Definition

4

proxy value assigned to samples reporting less than 6 ppm detection limit

 

Range of values

Minimum:

4

Maximum:

28

Units:

parts per million

Resolution:

1

TI

concentration of titanium in weight percent determined by inductively coupled plasma atomic emission spectroscopy

Range of values

Minimum:

0.085

Maximum:

1.393

Units:

weight percent

Resolution:

0.001

V

concentration of vanadium in parts per million determined by inductively coupled plasma atomic emission spectroscopy

Range of values

Minimum:

16

Maximum:

162

Units:

parts per million

Resolution:

1

Y

concentration of yttrium in parts per million determined by inductively coupled plasma atomic emission spectroscopy

Range of values

Minimum:

6

Maximum:

39

Units:

parts per million

Resolution:

1

YB

concentration of ytterbium in parts per million determined by inductively coupled plasma atomic emission spectroscopy. Values of 1 indicate below detection limit.

Value

Definition

1

proxy value assigned to samples reporting less than 2 ppm detection limit

 

Range of values

Minimum:

1

Maximum:

3

Units:

parts per million

Resolution:

1

ZN

concentration of ytterbium in parts per million determined by inductively coupled plasma atomic emission spectroscopy

Range of values

Minimum:

7

Maximum:

844

Units:

parts per million

Resolution:

1

B_soil.dbf

Multi-element chemical analyses for B-horizon soil samples. Includes site ID and lat/long. Quantitative results for 31 elements. 11 additional elements were analyzed but reported below detection limit for 90% to 100% of samples tested. Those elements and their detection limits in parts per million are: Ag(2), Au(8), Be(1), Bi(50), Cd(2), Eu(2), Ho(4), Mo(2), Sn(50), Ta(40), U(100).

Sample_no

Unique identification number for sample

SAMP_SOURC

Agency responsible for sample collecting

Value

Definition

FS

USDA Forest Service

X_COORD

Longitude of sample site

Range of values

Minimum:

-90

Maximum:

-92

Units:

decimal degrees

Resolution:

0.0001

Y_COORD

Latitude of sample site

Range of values

Minimum:

45

Maximum:

47

Units:

decimal degrees

Resolution:

0.001

DEPTH_AVE

Average depth of interval sampled

Range of values

Minimum:

0.50

Maximum:

36.50

Units:

inches

Resolution:

1

Depth_rng

depth of top and bottom of sampled interval in inches

HORIZON

designation of soil horizon

AL

concentration of aluminum in weight percent determined by inductively coupled plasma atomic emission spectroscopy

Range of values

Minimum:

1.283

Maximum:

6.677

Units:

weight percent

Resolution:

0.001

AS

concentration of arsenic in parts per million determined by hydride generation atomic absorption spectroscopy

Range of values

Minimum:

2.00

Maximum:

29.2

Units:

parts per million

Resolution:

0.01

BA

concentration of barium in parts per million determined by inductively coupled plasma atomic emission spectroscopy

Range of values

Minimum:

165

Maximum:

738

Units:

parts per million

Resolution:

1

CA

concentration of calcium in weight percent determined by inductively coupled plasma atomic emission spectroscopy

Range of values

Minimum:

0.213

Maximum:

5.715

Units:

percent

Resolution:

0.001

CE

concentration of cerium in parts per million determined by inductively coupled plasma atomic emission spectroscopy

Range of values

Minimum:

20

Maximum:

107

Units:

parts per million

Resolution:

1

CO

concentration of cobalt in parts per million determined by inductively coupled plasma atomic emission spectroscopy.

Range of values

Minimum:

3

Maximum:

49

Units:

parts per million

Resolution:

1

CR

concentration of chromium in parts per million determined by inductively coupled plasma atomic emission spectroscopy. Values of 1 indicate below detection limit.

Value

Definition

1

proxy values assigned to samples reporting less than 2 ppm detection limit

 

Range of values

Minimum:

1

Maximum:

37

Units:

parts per million

Resolution:

1

CU

concentration of copper in parts per million determined by inductively coupled plasma atomic emission spectroscopy

Range of values

Minimum:

4

Maximum:

82

Units:

parts per million

Resolution:

1

FE

concentration of iron in weight percent determined by inductively coupled plasma atomic emission spectroscopy:

Range of values

Minimum:

0.73

Maximum:

11.8

Units:

weight percent

Resolution:

0.01

Ga

concentration of gallium in parts per million determined by inductively coupled plasma atomic emission spectroscopy. Values of 3 indicate below detection limit.

Value

Definition

3

proxy values assigned to samples reporting less than 4 ppm detection limit

 

Range of values

Minimum:

3

Maximum:

13

Units:

parts per million

Resolution:

1

Hg

concentration of total mercury in parts per million determined by cold vapor atomic absorption spectroscopy. Values of 0.01 indicate below detection limit of 0.02 ppm.

Value

Definition

0.01

Proxy value for samples reporting less than the detection limit of 0.02 ppm

 

Range of values

Minimum:

0.01

Maximum:

0.17

Units:

parts per million

Resolution:

0.01

K

concentration of potassium in weight percent determined by inductively coupled plasma atomic emission spectroscopy

Range of values

Minimum:

0.380

Maximum:

2.870

Units:

weight percent

Resolution:

0.001

LA

concentration of lanthanum in parts per million determined by inductively coupled plasma atomic emission spectroscopy

Range of values

Minimum:

9

Maximum:

48

Units:

parts per million

Resolution:

1

LI

concentration of lithium in parts per million determined by inductively coupled plasma atomic emission spectroscopy

Range of values

Minimum:

4

Maximum:

18

Units:

parts per million

Resolution:

1

MG

concentration of magnesium in weight percent determined by inductively coupled plasma atomic absorption spectroscopy

Range of values

Minimum:

0.081

Maximum:

2.894

Units:

weight percent

Resolution:

0.001

MN

concentration of manganese in parts per million determined by inductively coupled plasma atomic emission spectroscopy

Range of values

Minimum:

56

Maximum:

6610

Units:

parts per million

Resolution:

1

NA

concentration of sodium in weight percent determined by inductively coupled plasma atomic emission spectroscopy

Range of values

Minimum:

0.135

Maximum:

1.174

Units:

weight percent

Resolution:

0.001

NB

concentration of niobium in parts per million determined by inductively coupled plasma atomic emission spectroscopy. Values of 3 indicate below detection limit.

Value

Definition

3

Proxy values assigned to samples reporting less than 4 ppm detection limit

 

Range of values

Minimum:

3

Maximum:

16

Units:

parts per million

Resolution:

1

ND

concentration of neodymium in parts per million determined by inductively coupled plasma atomic emission spectroscopy. Values of 5 indicate below detection limit.

Value

Definition

5

Proxy values assigned to samples reporting less than 9 ppm detection limit

 

Range of values

Minimum:

5

Maximum:

72

Units:

parts per million

Resolution:

1

NI

concentration of nickel in parts per million determined by inductively coupled plasma atomic emission spectroscopy. Values of 2 indicate below detection limit.

Value

Definition

2

Proxy value assigned to samples reporting less than the 3 ppm detection limit

 

Range of values

Minimum:

2

Maximum:

82

Units:

parts per million

Resolution:

1

P

concentration of phosphorous in weight percent determined by inductively coupled plasma atomic emission spectroscopy

Range of values

Minimum:

0.005

Maximum:

0.514

Units:

weight percent

Resolution:

1

PB

concentration of lead in parts per million determined by inductively coupled plasma atomic emission spectroscopy

Range of values

Minimum:

3

Maximum:

64

Units:

parts per million

Resolution:

1

SC

concentration of scandium in parts per million determined by inductively coupled plasma atomic emission spectroscopy.

Range of values

Minimum:

3

Maximum:

32

Units:

parts per million

Resolution:

1

SE

concentration of scandium in parts per million determined by hydride generation atomic absorption spectroscopy

Range of values

Minimum:

0.10

Maximum:

0.7

Units:

parts per million

Resolution:

0.01

SR

concentration of strontium in parts per million determined by inductively coupled plasma atomic emission spectroscopy

Range of values

Minimum:

35

Maximum:

220

Units:

parts per million

Resolution:

1

TH

concentration of thorium in parts per million determined by inductively coupled plasma atomic emission spectroscopy. Values of 4 indicate below detection limit.

Value

Definition

4

Proxy value assigned to samples reporting less than 6 ppm detection limit

 

Range of values

Minimum:

4

Maximum:

8

Units:

parts per million

Resolution:

1

TI

concentration of titanium in weight percent determined by inductively coupled plasma atomic emission spectroscopy

Range of values

Minimum:

0.088

Maximum:

1.679

Units:

weight percent

Resolution:

0.001

V

concentration of vanadium in parts per million determined by inductively coupled plasma atomic emission spectroscopy

Range of values

Minimum:

22

Maximum:

249

Units:

parts per million

Resolution:

1

Y

concentration of yttrium in parts per million determined by inductively coupled plasma atomic emission spectroscopy

Range of values

Minimum:

8

Maximum:

80

Units:

parts per million

Resolution:

1

YB

concentration of ytterbium in parts per million determined by inductively coupled plasma atomic emission spectroscopy. Values of 1 indicate below detection limit.

Value

Definition

1

Proxy values assigned samples reporting less than 2 ppm detection limit

 

Range of values

Minimum:

1

Maximum:

6

Units:

parts per million

Resolution:

1

ZN

concentration of ytterbium in parts per million determined by inductively coupled plasma atomic emission spectroscopy

Range of values

Minimum:

9

Maximum:

624

Units:

parts per million

Resolution:

1

C_soil.dbf

Multi-element chemical analyses for C-horizon soil samples. Includes site ID and lat/long. Quantitative results for 31 elements. 11 additional elements were analyzed but reported below detection limit for 90% to 100% of samples tested. Those elements and their detection limits in parts per million are: Ag(2), Au(8), Be(1), Bi(50), Cd(2), Eu(2), Ho(4), Mo(2), Sn(50), Ta(40), U(100).

Sample_no

Unique identification number for sample

SAMP_SOURC

agency responsible for collecting sample

Value

Definition

FS

USDA Forest Service

X_COORD

Longitude of sample site

Range of values

Minimum:

-90

Maximum:

-92

Units:

decimal degrees

Resolution:

0.0001

Y_COORD

latitude of sample site

Range of values

Minimum:

45

Maximum:

47

Units:

decimal degrees

Resolution:

0.001

DEPTH_AVE

Average depth of interval sampled

Range of values

Minimum:

0.50

Maximum:

36.50

Units:

inches

Resolution:

1

Depth_rng

depth of top and bottom of sampled interval in inches

HORIZON

designation of soil horizon

AL

concentration of aluminum in weight percent determined by inductively coupled plasma atomic emission spectroscopy

Range of values

Minimum:

0.800

Maximum:

8.400

Units:

weight percent

Resolution:

0.001

AS

concentration of arsenic in parts per million determined by hydride generation atomic absorption spectroscopy

Range of values

Minimum:

1.10

Maximum:

18.90

Units:

parts per million

Resolution:

0.01

BA

concentration of barium in parts per million determined by inductively coupled plasma atomic emission spectroscopy

Range of values

Minimum:

157

Maximum:

783

Units:

parts per million

Resolution:

1

CA

concentration of calcium in weight percent determined by inductively coupled plasma atomic emission spectroscopy

Range of values

Minimum:

0.095

Maximum:

2.585

Units:

weight percent

Resolution:

0.001

CE

concentration of cerium in parts per million determined by inductively coupled plasma atomic emission spectroscopy

Range of values

Minimum:

17

Maximum:

167

Units:

parts per million

Resolution:

1

CO

concentration of cobalt in parts per million determined by inductively coupled plasma atomic emission spectroscopy. Values of 1 indicate less than detection limit.

Value

Definition

1

proxy values assigned to samples reporting less than 2 ppm detection limit

 

Range of values

Minimum:

1

Maximum:

27

Units:

parts per million

Resolution:

1

CR

concentration of chromium in parts per million determined by inductively coupled plasma atomic emission spectroscopy. Values of 1 indicate below detection limit.

Value

Definition

1

proxy values assigned to samples reporting less than 2 ppm detection limit

 

Range of values

Minimum:

1

Maximum:

118

Units:

parts per million

Resolution:

1

CU

concentration of copper in parts per million determined by inductively coupled plasma atomic emission spectroscopy Values of 1 indicate less than detection limit.

Value

Definition

1

Proxy value assigned to samples reporting less than the 2 ppm detection limit

 

Range of values

Minimum:

1

Maximum:

100

Units:

parts per million

Resolution:

1

FE

concentration of iron in percent determined by inductively coupled plasma atomic emission spectroscopy:

Range of values

Minimum:

0.300

Maximum:

6.720

Units:

weight percent

Resolution:

0.001

Ga

concentration of gallium in parts per million determined by inductively coupled plasma atomic emission spectroscopy. Values of 3 indicate below detection limit.

Value

Definition

3

proxy values assigned to samples reporting less than 4 ppm detection limit

 

Range of values

Minimum:

3

Maximum:

24

Units:

parts per million

Resolution:

1

Hg

concentration of total mercury in parts per million determined by cold vapor atomic absorption spectroscopy. Values of 0.01 indicate below detection limit of 0.02 ppm.

Value

Definition

0.01

Proxy value for samples reporting less than the detection limit of 0.02 ppm

 

Range of values

Minimum:

0.01

Maximum:

0.12

Units:

parts per million

Resolution:

0.01

K

concentration of potassium in weight percent determined by inductively coupled plasma atomic emission spectroscopy

Range of values

Minimum:

0.78

Maximum:

2.96

Units:

weight percent

Resolution:

0.01

LA

concentration of lanthanum in parts per million determined by inductively coupled plasma atomic emission spectroscopy

Range of values

Minimum:

9

Maximum:

55

Units:

parts per million

Resolution:

1

LI

concentration of lithium in parts per million determined by inductively coupled plasma atomic emission spectroscopy

Range of values

Minimum:

2

Maximum:

40

Units:

parts per million

Resolution:

1

MG

concentration of magnesium in weight percent determined by inductively coupled plasma atomic emission spectroscopy

Range of values

Minimum:

0.075

Maximum:

1.760

Units:

weight percent

Resolution:

0.001

MN

concentration of manganese in parts per million determined by inductively coupled plasma atomic emission spectroscopy

Range of values

Minimum:

57

Maximum:

4120

Units:

parts per million

Resolution:

1

NA

concentration of sodium in weight percent determined by inductively coupled plasma atomic emission spectroscopy

Range of values

Minimum:

0.090

Maximum:

1.742

Units:

weight percent

Resolution:

0.001

NB

concentration of niobium in parts per million determined by inductively coupled plasma atomic emission spectroscopy. Values of 3 indicate below detection limit.

Value

Definition

3

Proxy values assigned to samples reporting less than 4 ppm detection limit

 

Range of values

Minimum:

3

Maximum:

15

Units:

parts per million

Resolution:

1

ND

concentration of neodymium in parts per million determined by inductively coupled plasma atomic emission spectroscopy. Values of 5 indicate below detection limit.

Value

Definition

5

Proxy values assigned to samples reporting less than 9 ppm detection limit

 

Range of values

Minimum:

5

Maximum:

49

Units:

parts per million

Resolution:

1

NI

concentration of nickel in parts per million determined by inductively coupled plasma atomic emission spectroscopy. Values of 2 indicate below detection limit.

Value

Definition

2

Proxy value assigned to samples reporting less than the 3 ppm detection limit

 

Range of values

Minimum:

2

Maximum:

84

Units:

parts per million

Resolution:

1

P

concentration of phosphorous in weight percent determined by inductively coupled plasma atomic emission spectroscopy

Range of values

Minimum:

0.005

Maximum:

0.221

Units:

weight percent

Resolution:

0.001

PB

concentration of lead in parts per million determined by inductively coupled plasma atomic emission spectroscopy

Range of values

Minimum:

3

Maximum:

48

Units:

parts per million

Resolution:

1

SC

concentration of scandium in parts per million determined by inductively coupled plasma atomic emission spectroscopy.

Range of values

Minimum:

3

Maximum:

22

Units:

parts per million

Resolution:

1

SE

concentration of selenium in parts per million determined by hydride generation atomic absorption spectroscopy

Range of values

Minimum:

0.10

Maximum:

1.8

Units:

parts per million

Resolution:

0.01

SR

concentration of strontium in parts per million determined by inductively coupled plasma atomic emission spectroscopy

Range of values

Minimum:

25

Maximum:

212

Units:

parts per million

Resolution:

1

TH

concentration of thorium in parts per million determined by inductively coupled plasma atomic emission spectroscopy. Values of 4 indicate below detection limit.

Value

Definition

4

Proxy value assigned to samples reporting less than 6 ppm detection limit

 

Range of values

Minimum:

4

Maximum:

20

Units:

parts per million

Resolution:

1

TI

concentration of titanium in weight percent determined by inductively coupled plasma atomic emission spectroscopy

Range of values

Minimum:

0.054

Maximum:

1.187

Units:

weight percent

Resolution:

0.001

V

concentration of vanadium in parts per million determined by inductively coupled plasma atomic emission spectroscopy

Range of values

Minimum:

11

Maximum:

236

Units:

parts per million

Resolution:

1

Y

concentration of yttrium in parts per million determined by inductively coupled plasma atomic emission spectroscopy

Range of values

Minimum:

7

Maximum:

38

Units:

parts per million

Resolution:

1

YB

concentration of ytterbium in parts per million determined by inductively coupled plasma atomic emission spectroscopy. Values of 1 indicate below detection limit.

Value

Definition

1

Proxy values assigned samples reporting less than 2 ppm detection limit

 

Range of values

Minimum:

1

Maximum:

5

Units:

parts per million

Resolution:

1

ZN

concentration of zinc in parts per million determined by inductively coupled plasma atomic emission spectroscopy

Range of values

Minimum:

6

Maximum:

207

Units:

parts per million

Resolution:

1

E_soil.dbf

Multi-element chemical analyses for E-horizon soil samples. Includes site ID and lat/long. Quantitative results for 31 elements. 11 additional elements were analyzed but reported below detection limit for 90% to 100% of samples tested. Those elements and their detection limits in parts per million are: Ag(2), Au(8), Be(1), Bi(50), Cd(2), Eu(2), Ho(4), Mo(2), Sn(50), Ta(40), U(100).

Sample_no

Unique identification number for sample

SAMP_SOURC

Agency responsible for collecting sample

Value

Definition

FS

USDA Forest Service

X_COORD

Longitude of sample site

Range of values

Minimum:

-90

Maximum:

-92

Units:

decimal degrees

Resolution:

0.0001

Y_COORD

latitude of sample site

Range of values

Minimum:

45

Maximum:

47

Units:

decimal degrees

Resolution:

0.001

DEPTH_AVE

Average depth of interval sampled

Range of values

Minimum:

0.50

Maximum:

22.0

Units:

inches

Resolution:

1

Depth_rng

depth of top and bottom of sampled interval in inches

HORIZON

designation of soil horizon

AL

concentration of aluminum in weight percent determined by inductively coupled plasma atomic emission spectroscopy

Range of values

Minimum:

1.443

Maximum:

5.499

Units:

weight percent

AS

concentration of arsenic in parts per million determined by hydride generation atomic absorption spectroscopy

Range of values

Minimum:

2.0

Maximum:

8.5

Units:

parts per million

Resolution:

0.01

BA

concentration of barium in parts per million determined by inductively coupled plasma atomic emission spectroscopy

Range of values

Minimum:

274

Maximum:

815

Units:

parts per million

Resolution:

1

CA

concentration of calcium in percent determined by inductively coupled plasma atomic emission spectroscopy

Range of values

Minimum:

0.129

Maximum:

1.012

Units:

percent

Resolution:

0.001

CE

concentration of cerium in parts per million determined by inductively coupled plasma atomic emission spectroscopy

Range of values

Minimum:

19

Maximum:

73

Units:

parts per million

Resolution:

1

CO

concentration of cobalt in parts per million determined by inductively coupled plasma atomic emission spectroscopy. Values of 1 indicate less than detection limit.

Value

Definition

1

proxy values assigned to samples reporting less than 2 ppm detection limit

 

Range of values

Minimum:

1

Maximum:

28

Units:

parts per million

Resolution:

1

CR

concentration of chromium in parts per million determined by inductively coupled plasma atomic emission spectroscopy.

Range of values

Minimum:

2

Maximum:

39

Units:

parts per million

Resolution:

1

CU

concentration of copper in parts per million determined by inductively coupled plasma atomic emission spectroscopy Values of 1 indicate less than detection limit.

Range of values

Minimum:

4

Maximum:

22

Units:

parts per million

Resolution:

1

FE

concentration of iron in weight percent determined by inductively coupled plasma atomic emission spectroscopy:

Range of values

Minimum:

0.30

Maximum:

6.72

Units:

weight percent

Resolution:

0.01

Ga

concentration of gallium in parts per million determined by inductively coupled plasma atomic emission spectroscopy. Values of 3 indicate below detection limit.

Value

Definition

3

proxy values assigned to samples reporting less than 4 ppm detection limit

 

Range of values

Minimum:

3

Maximum:

12

Units:

parts per million

Resolution:

1

Hg

concentration of total mercury in parts per million determined by cold vapor atomic absorption spectroscopy. Values of 0.01 indicate below detection limit of 0.02 ppm.

Value

Definition

0.01

Proxy value for samples reporting less than the detection limit of 0.02 ppm

 

Range of values

Minimum:

0.01

Maximum:

0.14

Units:

parts per million

Resolution:

0.01

K

concentration of potassium in weight percent determined by inductively coupled plasma atomic emission spectroscopy

Range of values

Minimum:

1.09

Maximum:

2.07

Units:

weight percent

Resolution:

0.01

LA

concentration of lanthanum in parts per million determined by inductively coupled plasma atomic emission spectroscopy

Range of values

Minimum:

10

Maximum:

39

Units:

parts per million

Resolution:

1

LI

concentration of lithium in parts per million determined by inductively coupled plasma atomic emission spectroscopy

Range of values

Minimum:

3

Maximum:

21

Units:

parts per million

Resolution:

1

MG

concentration of magnesium in weight percent determined by inductively coupled plasma atomic emission spectroscopy

Range of values

Minimum:

0.073

Maximum:

0.727

Units:

weight percent

Resolution:

0.001

MN

concentration of manganese in parts per million determined by inductively coupled plasma atomic emission spectroscopy

Range of values

Minimum:

126

Maximum:

3450

Units:

parts per million

Resolution:

1

NA

concentration of sodium in weight percent determined by inductively coupled plasma atomic emission spectroscopy

Range of values

Minimum:

0.199

Maximum:

1.294

Units:

weight percent

Resolution:

0.001

NB

concentration of niobium in parts per million determined by inductively coupled plasma atomic emission spectroscopy. Values of 3 indicate below detection limit.

Value

Definition

3

Proxy values assigned to samples reporting less than 4 ppm detection limit

 

Range of values

Minimum:

3

Maximum:

14

Units:

parts per million

Resolution:

1

ND

concentration of neodymium in parts per million determined by inductively coupled plasma atomic emission spectroscopy. Values of 5 indicate below detection limit.

Value

Definition

5

Proxy values assigned to samples reporting less than 9 ppm detection limit

 

Range of values

Minimum:

5

Maximum:

32

Units:

parts per million

Resolution:

1

NI

concentration of nickel in parts per million determined by inductively coupled plasma atomic emission spectroscopy. Values of 2 indicate below detection limit.

Range of values

Minimum:

2

Maximum:

23

Units:

parts per million

Resolution:

1

P

concentration of phosphorous in weight percent determined by inductively coupled plasma atomic emission spectroscopy

Range of values

Minimum:

0.009

Maximum:

0.070

Units:

weight percent

Resolution:

0.001

PB

concentration of lead in parts per million determined by inductively coupled plasma atomic emission spectroscopy

Range of values

Minimum:

8

Maximum:

26

Units:

parts per million

Resolution:

1

SC

concentration of scandium in parts per million determined by inductively coupled plasma atomic emission spectroscopy. Values of 1 indicate below detection limit.

Value

Definition

1

Proxy value assigned to samples reporting less than 2 ppm detection limit

 

Range of values

Minimum:

1

Maximum:

9

Units:

parts per million

Resolution:

1

SE

concentration of selenium in parts per million determined by hydride generation atomic absorption spectroscopy

Range of values

Minimum:

0.14

Maximum:

1.00

Units:

parts per million

Resolution:

0.01

SR

concentration of strontium in parts per million determined by inductively coupled plasma atomic emission spectroscopy

Range of values

Minimum:

36

Maximum:

145

Units:

parts per million

TH

concentration of thorium in parts per million determined by inductively coupled plasma atomic emission spectroscopy. Values of 4 indicate below detection limit.

Value

Definition

4

Proxy value assigned to samples reporting less than 6 ppm detection limit

 

Range of values

Minimum:

4

Maximum:

10

Units:

parts per million

Resolution:

1

TI

concentration of titanium in weight percent determined by inductively coupled plasma atomic emission spectroscopy

Range of values

Minimum:

0.172

Maximum:

0.510

Units:

weight percent

Resolution:

0.001

V

concentration of vanadium in parts per million determined by inductively coupled plasma atomic emission spectroscopy

Range of values

Minimum:

29

Maximum:

107

Units:

parts per million

Resolution:

1

Y

concentration of yttrium in parts per million determined by inductively coupled plasma atomic emission spectroscopy

Range of values

Minimum:

7

Maximum:

21

Units:

parts per million

Resolution:

1

YB

concentration of ytterbium in parts per million determined by inductively coupled plasma atomic emission spectroscopy.

Range of values

Minimum:

7

Maximum:

21

Units:

parts per million

Resolution:

1

ZN

concentration of zinc in parts per million determined by inductively coupled plasma atomic emission spectroscopy

Range of values

Minimum:

6

Maximum:

207

Units:

parts per million

Resolution:

1

usgs_ls.dbf

Multi-element chemical analyses for lake-bottom sediment samples. Includes site ID, lake name, water depth at sample site, and lat/long. Quantitative results for 36 elements. 10 additional elements were analyzed but reported below detection limit for 90% to 100% of samples tested. Those elements and their detection limits in parts per million are: Ag(2), Au(8), Be(1), Bi(50), Cd(2), Eu(2), Ho(4), Sn(50), Ta(40), U(100).

SAMPLE

unique identifying number for sample

LAKE_NAME

name of lake from which sample was collected

DEPTH

depth of water at sample site in feet

Range of values

Minimum:

0.0

Maximum:

40.0

Units:

feet

Resolution:

1

X_COORD

longitude of sample site

Range of values

Minimum:

-91.92237

Maximum:

-90.06391

Units:

decimal degrees

Resolution:

0.0001

Y_COORD

latitude of sample site

Range of values

Minimum:

45.10781

Maximum:

46.79576

Units:

decimal degrees

Resolution:

0.0001

AL

concentration of aluminum in weight percent determined by inductively coupled plasma atomic emission spectroscopy

Range of values

Minimum:

0.955

Maximum:

5.385

Units:

weight percent

Resolution:

0.001

AS

concentration of arsenic in parts per million determined by hydride generation atomic absorption spectroscopy.

Range of values

Minimum:

1.75

Maximum:

66.70

Units:

ppm

Resolution:

0.01

BA

concentration of barium in parts per million determined by inductively coupled plasma atomic emission spectroscopy

Range of values

Minimum:

109

Maximum:

508

Units:

ppm

Resolution:

1

CA

concentration of calcium in weight percent determined by inductively coupled plasma atomic emission spectroscopy

Range of values

Minimum:

0.247

Maximum:

1.748

Units:

weight percent

Resolution:

0.001

C_ORG

concentration of organic carbon in weight percent

Range of values

Minimum:

0.29

Maximum:

36.28

Units:

weight percent

Resolution:

0.01

C_CRBNT

concentration of carbonate carbon in weight percent determined by coulometric titration

Range of values

Minimum:

0.00

Maximum:

0.26

Units:

weight percent

Resolution:

0.01

C_TOT

concentration of total carbon in weight percent determined by automated carbon analyzer

Range of values

Minimum:

0.29

Maximum:

36.30

Units:

weight percent

Resolution:

0.01

CE

concentration of cerium in parts per million determined by inductively coupled plasma atomic emission spectroscopy

Range of values

Minimum:

9

Maximum:

82

Units:

parts per million

Resolution:

1

CO

concentration of cobalt in parts per million determined by inductively coupled plasma atomic emission spectroscopy

Range of values

Minimum:

2

Maximum:

18

Units:

parts per million

Resolution:

1

CR

concentration of chromium in parts per million determined by inductively coupled plasma atomic emission spectroscopy

Range of values

Minimum:

13

Maximum:

101

Units:

parts per million

Resolution:

1

CU

concentration of copper in parts per million determined by inductively coupled plasma atomic emission spectroscopy

Range of values

Minimum:

2

Maximum:

71

Units:

parts per million

Resolution:

1

FE

concentration of iron in weight percent determined by inductively coupled plasma atomic emission spectroscopy

Range of values

Minimum:

0.43

Maximum:

17.20

Units:

weight percent

Resolution:

0.01

GA

concentration of gallium in parts per million determined by inductively coupled plasma atomic emission spectroscopy. Values of 3 indicate less than detection limit.

Value

Definition

3

Proxy value assigned to samples reporting less than the 4 ppm detection limit

 

Range of values

Minimum:

3

Maximum:

21

Units:

parts per million

Resolution:

1

HG

concentration of total mercury determined by cold vapor atomic absorption spectroscopy. Values of 0.014 indicate les than detection limit.

Value

Definition

0.014

Proxy value assigned to samples reporting less than the 0.02 ppm detection limit

 

Range of values

Minimum:

0.014

Maximum:

0.360

Units:

parts per million

Resolution:

0.01

K

concentration of potassium in weight percent determined by inductively coupled plasma atomic emission spectroscopy

Range of values

Minimum:

0.14

Maximum:

2.11

Units:

weight percent

Resolution:

0.01

LA

concentration of lanthanum in parts per million determined by inductively coupled plasma atomic emission spectroscopy.

Range of values

Minimum:

4

Maximum:

44

Units:

parts per million

Resolution:

1

LI

concentration of lithium in parts per million determined by inductively coupled plasma atomic emission spectroscopy.

Range of values

Minimum:

3

Maximum:

26

Units:

parts per million

Resolution:

1

MG

concentration of magnesium in weight percent determined by inductively coupled plasma atomic emission spectroscopy

Range of values

Minimum:

0.114

Maximum:

1.155

Units:

weight percent

Resolution:

0.001

MN

concentration of manganese in parts per million determined by inductively coupled plasma atomic emission spectroscopy.

Range of values

Minimum:

85

Maximum:

4450

Units:

parts per million

Resolution:

1

MO

concentration of molybdenum in parts per million determined by inductively coupled plasma atomic emission spectroscopy. Values of 1 indicate less than detection limit.

Value

Definition

1

Proxy value assigned to samples reporting less than the 2 ppm detection limit

 

Range of values

Minimum:

1

Maximum:

7

Units:

parts per million

Resolution:

1

NA

concentration of sodium in weight percent determined by inductively coupled plasma atomic emission spectroscopy

Range of values

Minimum:

0.060

Maximum:

1.043

Units:

weight percent

Resolution:

0.001

NB

concentration of niobium in parts per million determined by inductively coupled plasma atomic emission spectroscopy. Values of 3 indicate less than detection limit.

Value

Definition

3

Proxy value assigned to samples reporting less than the 4 ppm detection limit

 

Range of values

Minimum:

3

Maximum:

22

Units:

parts per million

Resolution:

1

ND

concentration of neodymium parts per million determined by inductively coupled plasma atomic emission spectroscopy. Values of 6 indicate less than detection limit.

Value

Definition

6

Proxy values assigned to samples reporting less than the 9 ppm detection limit

 

Range of values

Minimum:

6

Maximum:

60

Units:

parts per million

Resolution:

1

NI

concentration of nickel in parts per million determined by inductively coupled plasma atomic emission spectroscopy. Values of 2 indicate less than detection limit.

Value

Definition

2

Proxy value assigned to samples reporting less than the 3 ppm detection limit

 

Range of values

Minimum:

2

Maximum:

35

Units:

parts per million

Resolution:

1

P

concentration of phosphorous in weight percent determined by inductively coupled plasma atomic emission spectroscopy

Range of values

Minimum:

0.010

Maximum:

0.380

Units:

weight percent

Resolution:

0.001

PB

concentration of lead in parts per million determined by inductively coupled plasma atomic emission spectroscopy

Range of values

Minimum:

9

Maximum:

69

Units:

parts per million

Resolution:

1

S

concentration of sulfur in weight percent determined by automated sulfur analyzer

Range of values

Minimum:

0.04

Maximum:

1.46

Units:

weight percent

Resolution:

0.04

SC

concentration of scandium in parts per million determined by inductively coupled plasma atomic emission spectroscopy. Values of 1 indicate less than detection limit.

Value

Definition

1

Proxy values assigned samples reporting less than the 2 ppm detection limit

 

Range of values

Minimum:

1

Maximum:

12

Units:

parts per million

Resolution:

1

SE

concentration of selenium in parts pr million determined by hydride generation atomic absorption spectroscopy. Values of 0.14 indicate less than detection limit.

Value

Definition

0.14

Proxy value assigned to samples reporting les than the 0.2 ppm detection limit

 

Range of values

Minimum:

0.14

Maximum:

5.00

Units:

parts per million

Resolution:

0.1

SR

concentration of strontium in parts per million determined by inductively coupled plasma atomic emission spectroscopy.

Range of values

Minimum:

22

Maximum:

133

Units:

parts per million

Resolution:

1

TH

concentration of thorium in parts per million determined by inductively coupled plasma atomic emission spectroscopy. Values of 4 indicate less than detection limit.

Value

Definition

4

Proxy values assigned to samples reporting less than the 6 ppm detection limit

 

Range of values

Minimum:

4

Maximum:

9

Units:

parts per million

Resolution:

1

TI

concentration of titanium in weight percent determined by inductively coupled plasma atomic emission spectroscopy

Range of values

Minimum:

0.054

Maximum:

0.449

Units:

weight percent

Resolution:

0.001

V

concentration of vanadium in parts per million determined by inductively coupled plasma atomic emission spectroscopy.

Range of values

Minimum:

17

Maximum:

290

Units:

parts per million

Resolution:

1

Y

concentration of yttrium in parts per million determined by inductively coupled plasma atomic emission spectroscopy.

Range of values

Minimum:

5

Maximum:

34

Units:

parts per million

Resolution:

1

YB

concentration of ytterbium in parts per million determined by inductively coupled plasma atomic emission spectroscopy. Values of 1 indicate less than detection limit.

Value

Definition

1

Proxy value assigned to samples reporting less than the 2 ppm detection limit

 

Range of values

Minimum:

1

Maximum:

3

Units:

parts per million

Resolution:

1

ZN

concentration of zinc in parts per million determined by inductively coupled plasma atomic emission spectroscopy

Range of values

Minimum:

10

Maximum:

445

Units:

parts per million

Resolution:

1

nure_ls.dbf

Multi-element chemical analyses for lake-bottom sediment samples collect during the NURE program. Includes site ID, lake name, and lat/long. Quantitative results for 10 elements.

ID

unique sample identification number

LAKENAME

name of lake from which sample was collected

X_COORD

longitude of sample site

Range of values

Minimum:

-91.995

Maximum:

-90.012

Units:

decimal degrees

Resolution:

0.001

Y_COORD

latitude of sample site

Range of values

Minimum:

45.005

Maximum:

46.796

Units:

decimal degrees

Resolution:

0.001

QUAD

name of NTMS quadrangle containing sample site

Value

Definition

Ashland

 

Ricelake

 

U3O8

concentration of uranium oxide (U3O8) in parts per million

Value

Definition

-9999.9

value assigned to samples for which analysis was not performed

 

Range of values

Minimum:

0.4

Maximum:

28.0

Units:

parts per million

Resolution:

0.1

LOI__

loss on ignition in weight percent

Value

Definition

-999

value assigned to samples for which analyses were not performed

 

Range of values

Minimum:

1

Maximum:

86

Units:

weight percent

Resolution:

1

AS

concentration of arsenic in parts per million

Value

Definition

-9999.9

value assigned to samples for which analysis was not performed

3

Proxy value assigned to samples reporting less than the 5 ppm detection limit

 

Range of values

Minimum:

3

Maximum:

45.0

Units:

parts per million

Resolution:

1

CU

concentration of copper in parts per million

Value

Definition

-9999

value assigned to samples for which analyses were not performed

 

Range of values

Minimum:

5

Maximum:

495

Units:

parts per million

Resolution:

1

MO

concentration of molybdenum in parts per million. Values of 0.5 indicate less than detection limit.

Value

Definition

0.5

Proxy values assigned to samples reporting less than the 1 ppm detection limit

-9999

value assigned to samples for which analyses was not performed

 

Range of values

Minimum:

0.5

Maximum:

54.0

Units:

parts per million

Resolution:

1

NI

concentraiton of nickel in parts per million

Value

Definition

-9999

value assigned to samples for which analyses were not performed

 

Range of values

Minimum:

5

Maximum:

1000

Units:

parts per million

Resolution:

1

PB

concentration of lead in parts per million

Value

Definition

-9999

value assigned to samples for which analyses were not performed

 

Range of values

Minimum:

5

Maximum:

430

Units:

parts per million

Resolution:

1

SE

concentration of selenium in parts per million. Values of 0.5 indicate less than detection limit.

Value

Definition

0.5

Proxy value assigned to samples reporting less than the 1 ppm detection limit

-9999.9

value assigned to samples for which analysis was not performed

 

Range of values

Minimum:

0.5

Maximum:

51.0

Units:

parts per million

Resolution:

1

V

concentration of vanadium oxide (V2O5) in parts per million

Value

Definition

-9999

value assigned to samples for which analyses were not performed

 

Range of values

Minimum:

30

Maximum:

860

Units:

parts per million

Resolution:

1

ZN

concentration of zinc in parts per million

Value

Definition

-9999

value assigned to samples for which analyses were not performed

 

Range of values

Minimum:

5

Maximum:

540

Units:

parts per million

Resolution:

1

nure_original.dbf

Multi-element analyses of stream sediments collected and analyzed during the NURE program. Includes ID, lat/long, quadrangle name. Quantitative results for 28 elements.

UNIQID

unique identification number for sample

Range of values

Minimum:

6002912

Maximum:

6017773

QUAD_NAME

name of NTMS quadrangle containing sample site

Value

Definition

Ashland

 

Rice Lake

 

LAT

latitude of sample site

Range of values

Minimum:

45.002

Maximum:

46.984

Units:

decimal degrees

Resolution:

0.001

LONG

longitude of sample site

Range of values

Minimum:

-91.995

Maximum:

-90.002

Units:

decimal degrees

Resolution:

0.001

AL

concentration of aluminum in weight percent determined by plasma source emission spectroscopy

Range of values

Minimum:

0.74

Maximum:

7.96

Units:

weight percent

Resolution:

0.01

AS

concentration of arsenic in parts per million determined by atomic absorption spectroscopy

Range of values

Minimum:

0.2

Maximum:

29.4

Units:

parts per million

Resolution:

0.1

B

concentration of boron in parts per million determined by plasma source emission spectroscopy. Values of 5 indicate below detection limit.

Value

Definition

-999

value assigned to samples for which analysis was not performed

5

Value assigned to samples reporting less than the 10 ppm detection limit

 

Range of values

Minimum:

5

Maximum:

62

Units:

parts per million

Resolution:

1

BA

concentration of barium in parts per million determined by plasma source emission spectroscopy

Range of values

Minimum:

95

Maximum:

1237

Units:

parts per million

Resolution:

1

BE

concentration of beryllium in parts per million determined by plasma source emission spectroscopy. Values of 0.5 indicate below detection limit.

Value

Definition

0.5

Value assigned to samples reporting less than the 1 ppm detection limit

 

Range of values

Minimum:

0.5

Maximum:

9.0

Units:

parts per million

Resolution:

1

CA

concentration of calcium in weight percent determined by plasma source emission spectroscopy

Range of values

Minimum:

0.11

Maximum:

3.36

Units:

weight percent

Resolution:

0.01

CO

concentration of cobalt in parts per million determined by plasma source emission spectroscopy. Values of 2 indicate below detection limit.

Value

Definition

2

Value assigned to samples reporting less than the 4 ppm detection limit

 

Range of values

Minimum:

2

Maximum:

53

Units:

parts per million

Resolution:

1

CR

concentration of chromium in parts per million determined by plasma source emission spectroscopy

Range of values

Minimum:

9

Maximum:

167

Units:

parts per million

Resolution:

1

CU

concentration of copper in parts per million determined by plasma source emission spectroscopy. Value of 1 indicates below detection limit.

Value

Definition

1

Value assigned to samples reporting less than the 2 ppm detection limit

 

Range of values

Minimum:

1

Maximum:

398

Units:

parts per million

Resolution:

1

FE

concentration of iron in weight percent determined by plasma source emission spectroscopy

Range of values

Minimum:

0.37

Maximum:

7.95

Units:

weight percent

Resolution:

0.01

K

concentration of potassium in weight percent determined by plasma source emission spectroscopy

Range of values

Minimum:

0.22

Maximum:

2.63

Units:

weight percent

Resolution:

0.01

LI

concentration of lithium in parts per million determined by plasma source emission spectroscopy

Range of values

Minimum:

1

Maximum:

33

Units:

parts per million

Resolution:

1

MG

concentration of magnesium in weight percent determined by plasma source emission spectroscopy

Range of values

Minimum:

0.069

Maximum:

2.479

Units:

weight percent

Resolution:

0.01

MN

concentration of manganese in parts per million determined by plasma source emission spectroscopy

Range of values

Minimum:

95

Maximum:

9600

Units:

parts per million

Resolution:

1

NA

concentration of sodium in weight percent determined by plasma source emission spectroscopy

Range of values

Minimum:

0.159

Maximum:

1.669

Units:

weight percent

Resolution:

0.01

NB

concentration of lithium in parts per million determined by plasma source emission spectroscopy. Values of 2 indicate below detection limit.

Value

Definition

2

Value assigned to samples reporting less the 4 ppm detection limit

 

Range of values

Minimum:

2

Maximum:

36

Units:

parts per million

Resolution:

1

NI

concentration of nickel in parts per million determined by plasma source emission spectroscopy. Values of 1 indicate below detection limit.

Value

Definition

1

Value assigned to samples reporting less than the 2 ppm detection limit

 

Range of values

Minimum:

1

Maximum:

46

Units:

parts per million

Resolution:

1

P

concentration of phosphorous in parts per million determined by plasma source emission spectroscopy

Range of values

Minimum:

58

Maximum:

2376

Units:

parts per million

Resolution:

1

SC

concentration of scandium in parts per million determined by plasma source emission spectroscopy

Range of values

Minimum:

1

Maximum:

27

Units:

parts per million

Resolution:

1

SE

concentration of selenium in parts per million determined by atomic absorption spectroscopy

Range of values

Minimum:

0.2

Maximum:

10.1

Units:

parts per million

Resolution:

0.1

SR

concentration of strontium in parts per million determined by plasma source emission spectroscopy

Value

Definition

-999

value assigned to samples for which analysis was not performed

 

Range of values

Minimum:

32

Maximum:

319

Units:

parts per million

Resolution:

1

TH

concentration of thorium in parts per million determined by plasma source emission spectroscopy. Values of 1 indicate below detection limit.

Value

Definition

1

Value assigned to samples reporting less than 2 ppm detection limit