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publications > open file report > OFR 2007-1203 > appendix 1: surficial samples

APPENDIX 1: Lead-210 Data on Cores and Surficial Samples for Biscayne Bay and Florida Bay

Data are listed by general location (Biscayne Bay or Florida Bay), then by date collected, then by core number.

Surficial Samples
Sample Site: Rankin Basin, Florida Bay, Florida
Date Collected: August 3, 2002
Collected by Lynn Wingard, USGS, Reston

GLW802-Rank B1
Lat/Long: N 25.754° W 80.4754°

Depth (cm)
Mean Depth (cm)
Wet Bulk Density (g/cm3)
Dry Bulk Density (g/cm3)
Accum. Dry Bulk Density (g/cm3)
Dry Bulk Density - Fines (g/cm3)
Water Content (%)
Insoluble Residue (% Dry Wt.)
Coarse (% Dry Wt.) >0.062mm
Fines (% Dry Wt.) <0.062mm
*Loss On Ignition (% Dry Wt.)
*Total Pb-210 Activity (dpm/g)
*Total Pb-210 Error +/- (dpm/g)
0-1
0.5
--
--
--
--
--
--
--
--
14.00
5.34
0.104

GLW802-Rank B2
Lat/Long: N 25.0854° W 80.4820°

Depth (cm)
Mean Depth (cm)
Wet Bulk Density (g/cm3)
Dry Bulk Density (g/cm3)
Accum. Dry Bulk Density (g/cm3)
Dry Bulk Density - Fines (g/cm3)
Water Content (%)
Insoluble Residue (% Dry Wt.)
Coarse (% Dry Wt.) >0.062mm
Fines (% Dry Wt.) <0.062mm
*Loss On Ignition (% Dry Wt.)
*Total Pb-210 Activity (dpm/g)
*Total Pb-210 Error +/- (dpm/g)
0-1
0.5
--
--
--
--
--
--
--
--
11.80
4.51
0.072

GLW802-Rank B3
Lat/Long: N 25.0790° W 80.4954°

Depth (cm)
Mean Depth (cm)
Wet Bulk Density (g/cm3)
Dry Bulk Density (g/cm3)
Accum. Dry Bulk Density (g/cm3)
Dry Bulk Density - Fines (g/cm3)
Water Content (%)
Insoluble Residue (% Dry Wt.)
Coarse (% Dry Wt.) >0.062mm
Fines (% Dry Wt.) <0.062mm
*Loss On Ignition (% Dry Wt.)
*Total Pb-210 Activity (dpm/g)
*Total Pb-210 Error +/- (dpm/g)
0-1
0.5
--
--
--
--
--
--
--
--
12.00
4.29
0.072

GLW802-Rank B4
Lat/Long: N 25.0719° W 80.4959°

Depth (cm)
Mean Depth (cm)
Wet Bulk Density (g/cm3)
Dry Bulk Density (g/cm3)
Accum. Dry Bulk Density (g/cm3)
Dry Bulk Density - Fines (g/cm3)
Water Content (%)
Insoluble Residue (% Dry Wt.)
Coarse (% Dry Wt.) >0.062mm
Fines (% Dry Wt.) <0.062mm
*Loss On Ignition (% Dry Wt.)
*Total Pb-210 Activity (dpm/g)
*Total Pb-210 Error +/- (dpm/g)
0-1
0.5
--
--
--
--
--
--
--
--
14.80
5.39
0.075

GLW802-Rank B5
Lat/Long: N 25.0658° W 80.4853°

Depth (cm)
Mean Depth (cm)
Wet Bulk Density (g/cm3)
Dry Bulk Density (g/cm3)
Accum. Dry Bulk Density (g/cm3)
Dry Bulk Density - Fines (g/cm3)
Water Content (%)
Insoluble Residue (% Dry Wt.)
Coarse (% Dry Wt.) >0.062mm
Fines (% Dry Wt.) <0.062mm
*Loss On Ignition (% Dry Wt.)
*Total Pb-210 Activity (dpm/g)
*Total Pb-210 Error +/- (dpm/g)
0-1
0.5
--
--
--
--
--
--
--
--
12.80
4.85
0.074

GLW802-Rank B6
Lat/Long: N 25.0669° W 80.4646°

Depth (cm)
Mean Depth (cm)
Wet Bulk Density (g/cm3)
Dry Bulk Density (g/cm3)
Accum. Dry Bulk Density (g/cm3)
Dry Bulk Density - Fines (g/cm3)
Water Content (%)
Insoluble Residue (% Dry Wt.)
Coarse (% Dry Wt.) >0.062mm
Fines (% Dry Wt.) <0.062mm
*Loss On Ignition (% Dry Wt.)
*Total Pb-210 Activity (dpm/g)
*Total Pb-210 Error +/- (dpm/g)
0-1
0.5
--
--
--
--
--
--
--
--
14.00
5.11
0.130

Data is for <0.062mm size fraction only.
ND = Not detected
Tr = Trace quantity, too low to quantify
Note: Several Be-7 half-lives had passed prior to analysis.

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Last updated: 30 January, 2008 @ 11:19 AM(TJE)