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Sediment Mercury Profile, Laguna de Pozuelos, Argentine Northwest

Dates

Publication Date
Time Period
2007

Citation

Conaway, C.H., McGlue, M.M., Cohen, A.S., and Swarzenski, P.W., 2020, Sediment Mercury Profile, Laguna de Pozuelos, Argentine Northwest: U.S. Geological Survey data release, https://doi.org/10.5066/P91I9H52.

Summary

The data represent a shallow mercury chronology using sediment core from a playa lake system situated in a high-altitude setting in northwest Argentina. Archive samples were used from sediment core (LP07-1A) that was collected from a location (lat -22.362100°, lon -66.003600°) in the center of the playa-lake Laguna de Pozuelos in the dry season of 2007, when the water level was 2 to 3 cm. The samples were taken over 1 to 2 cm intervals and had been dried and homogenized. Sediment total mercury analyses were conducted by digesting sediment (0.30 g) in boiling concentrated nitric/sulfuric acid (ratio 3:1), followed by 12 hour oxidation with bromine monochloride, tin chloride reduction, gold amalgamation, and detection by CVAFS. Additional [...]

Contacts

Point of Contact :
Christopher H Conaway
Originator :
Christopher H Conaway, Michael M McGlue, Andrew S Cohen, Peter W Swarzenski
Metadata Contact :
Christopher H Conaway
Publisher :
U.S. Geological Survey
Distributor :
U.S. Geological Survey - ScienceBase
SDC Data Owner :
Earth System Processes Division
USGS Mission Area :
Water Resources

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Sediment Mercury Profile, Laguna de Pozuelos, Argentine Northwest R1.xml
Original FGDC Metadata
View 		9.38 KB application/fgdc+xml
Slide1.JPG thumbnail 45.05 KB image/jpeg
Pozuelos LP07-1A mercury R1.csv 361 Bytes text/csv

Purpose

Data were obtained in order to assess regional and global mercury atmospheric deposition trends. Atmospheric deposition of mercury in the Southern Hemisphere is not well characterized because chronologies from that region are far fewer than in the Northern Hemisphere. Thus an existing environmental archive--a sediment core from high-altitude lake in Argentina--was used to investigate mercury chronology in high-altitude Southern Hemisphere basin.
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DOI https://www.sciencebase.gov/vocab/category/item/identifier doi:10.5066/P91I9H52

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