[Parameters: Topic='BIOSPHERE', Term='ECOLOGICAL DYNAMICS', Variable_Level_1='ECOTOXICOLOGY']
Effect of Mining and Related Activities on the Sediment Trace Element Geochemistry of Lake Coeur d'Alene, IdahoEntry ID: BESTsed09
Abstract: The purpose of the USGS study was to determine the trace element
concentrations, partitioning, and distribution in the sediment column
and to relate them to mining, and mining related discharge operations
that have occurred in the Coeur d'Alene (CDA) district since the
1880's. Surface bed sediment samples were collected from Lake Coeur
d'Alene, ID in August 1989 and bulk surface sediment ... chemistry data
for the most metal-enriched locations were provided in Table III and
have been entered in the database (Horowitz and Elrick 1993).
Additional data provided on the metal content of individual grain size
fractions were also provided in Table III, but these data have not
been entered in the database. The results of analysis of subsurface
sediment samples have also been reported (Horowitz et al. 1993), but
these data have not been entered in the database.
The area of study was Lake Coeur d'Alene. Locations of stations
sampled were Lake Coeur d'Alene near Independence Pt. (CDA32), Wolf
Lodge Bay (CDA22A), Black Rock Bay (CDA93), Windy Bay (CDA100), Harlow
Pt. (CDA119), Harrison (CDA128), and Conkling Point (CDA155).
Subsamples were removed from the upper 2 cm of sediment in each grab
and immediately stored on ice at 4o C.
Target analytes were Trace and major elements including: Ag, Al, As, Cd,
Co, Cr, Cu, Fe, Hg, Ni, Mn, Pb, Sb, Se, Ti and Zn. Sediment TOC
content was also determined.
Analytical techniques included the following: Sediments were ground
to <100 mesh and digested with strong acid (HF-HClO4-aqua regia) at
200o C. All metals were analyzed by flame AAS except for As, Sb, and
Se which were determined by hydride generation AAS and mercury which
was determined using the cold vapor technique. Bulk sediments and
specific grain size fractions were analyzed. Only the bulk sediment
analyses were entered in the database.
The information for this metadata was taken from the Columbia River
Basin: Sediment Database Abstracts.
Data Set Citation
Dataset Originator/Creator: Arthur Horowitz, U.S. Geological Survey
Dataset Title: Effect of Mining and Related Activities on the Sediment Trace Element Geochemistry of Lake Coeur d'Alene, Idaho
Dataset Release Date: unknown
Dataset Release Place: Seattle, Washington
Dataset Publisher: U.S. Environmental Protection Agency, Region 10
Data Presentation Form: databaseOnline Resource: http://www.epa.gov/r10earth/data/crbdata.html?dioxin+#first_hit
Start Date: 1989-08-01Stop Date: 1989-08-31
Quality Precision and bias for the chemical analyses were monitored by
replicate analyses of selected samples and by the concomitant
digestion and analysis of NIST reference sediment and USGS rock and
soil standards. Precision was usually better than ? 10 percent; no
bias was detected. The only qualifier code used in the data set
... provided was "U" - Not detected. Value given is the detection limit.
When comparing these data to other similar sediment trace metal data
sets, the user should remember that these results are for the stations
identified as those with the highest metal content.
All data entered in the database were reviewed for data entry errors.
All detected errors were corrected.
Access Constraints None
Use Constraints None
Data Set Progress
Role: TECHNICAL CONTACT
Phone: (770) 903-9153
Email: horowitz at usgs.gov
U.S. Geological Survey
Province or State: Georgia
Country: United States
Role: DIF AUTHOR
Phone: (301) 614-6898
Email: Tyler.B.Stevens at nasa.gov
NASA Goddard Space Flight Center Global Change Master Directory
Province or State: MD
Postal Code: 20771
Horowitz, A.J. and K.A. Elrick. 1993. Effect of mining and related
activities on the sediment trace element geochemistry of Lake Coeur
d'Alene, Idaho, USA. Part I. Surface sediments. Hydrological
Horowitz, A.J., K.A. Elrick, J.A. Robbins, and R.B. Cook. 1993. The
effect of mining and related activities on the sediment-trace element
geochemistry of Lake Coeur d'Alene, Idaho. Part II: Subsurface
sediments. U.S. Geological Survey, Atlanta, GA. Open-File Report
Extended Metadata Properties
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Creation and Review Dates
DIF Creation Date: 2001-04-27
Last DIF Revision Date: 2012-12-12
Future DIF Review Date: 2002-04-27