Sedimentary archive of contamination in the confined channel of the OhA (TM) e River, Czech Republic

Result code in IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F00216208%3A11310%2F17%3A10364156" target="_blank" >RIV/00216208:11310/17:10364156 - isvavai.cz</a>

Result on the web

<a href="http://dx.doi.org/10.1007/s11368-017-1664-x" target="_blank" >http://dx.doi.org/10.1007/s11368-017-1664-x</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.1007/s11368-017-1664-x" target="_blank" >10.1007/s11368-017-1664-x</a>

Result language

angličtina

Original language name

Sedimentary archive of contamination in the confined channel of the OhA (TM) e River, Czech Republic

Original language description

The OhA (TM) e River has received contamination from metal mining and metallurgy (mainly Cu, Pb, Sn, U, Zn) over the previous five centuries. This contamination history has been poorly documented. Contamination has entered the river system in its middle reach, where the channel is incised and bedrock confined, which impedes overbank deposition. Our objective was to locate and describe a sedimentary record in this unfavourable depositional setting. Three former channel bars that have coalesced with the riverbank were revealed by examination of historical and current maps and a digital terrain model. Manual coring in the bar and in situ (handheld) X-ray fluorescence (XRF) spectroscopy provided data for developing a contamination chemostratigraphy, which was correlated with the mining history in the region. Detailed topographic examination of the bar and valley edge was important to understanding the evolution of one of the bars. Optically stimulated luminescence (OSL) dating was used to verify the timing of deposition. Handheld XRF for in situ analysis of element composition is efficient for studying contaminated sediment bodies with complex stratigraphy, which require extensive coring and stratigraphic correlation. Despite the unfavourable settings, the channel bars trapped sufficient sediment to produce a record that correlates with the history of contamination in the drainage basin. In the bar studied in greatest detail, we observed a surprising amount of contamination passing through the OhA (TM) e River channel (up to 300 mg kg(-1) of Cu, 340 mg kg(-1) of Pb and 630 mg kg(-1) of Sn in fine sand and silt deposits) associated with a pollution climax in the sixteenth and seventeenth centuries. Modern contamination (Hg and U deposited in the nineteenth and twentieth centuries) was entrapped with low efficiency based on comparable concentrations of Hg and U located 90 km downstream.

Czech name

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Czech description

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Type

J_imp - Article in a specialist periodical, which is included in the Web of Science database

CEP classification

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OECD FORD branch

10505 - Geology

Project

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Continuities

I - Institucionalni podpora na dlouhodoby koncepcni rozvoj vyzkumne organizace

Publication year

2017

Confidentiality

S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

Name of the periodical

Journal of Soils and Sediments

ISSN

1439-0108

e-ISSN

—

Volume of the periodical

17

Issue of the periodical within the volume

11

Country of publishing house

DE - GERMANY

Number of pages

14

Pages from-to

2596-2609

UT code for WoS article

000412738900003

EID of the result in the Scopus database

2-s2.0-85010733435