889848
doi
10.5281/zenodo.889848
oai:zenodo.org:889848
RĂDAN, Silviu
National Institute of Marine Geology and Geo-Ecology
CATIANIS, Irina
National Institute of Marine Geology and Geo-Ecology
GROSU, Dumitru
National Institute of Marine Geology and Geo-Ecology
POJAR, Iulian
National Institute of Marine Geology and Geo-Ecology
SCRIECIU, Albert
National Institute of Marine Geology and Geo-Ecology
An environmental magneto-lithogenetic study. II. Insights from surficial sediments
RĂDAN, Sorin-Corneliu
Geological Institute of Romania
info:eu-repo/semantics/openAccess
Creative Commons Attribution 4.0 International
https://creativecommons.org/licenses/by/4.0/legalcode
environmental magnetism
lake sediments
magnetic susceptibility
lithology
bottom sediments
Danube Delta
<p>Magnetic susceptibility (<strong>MS</strong>) represents a high resolution environmental and lithological (<strong>LITHO</strong>) proxy tool, which is successfully used for the study of recent sediments in freshwater or marine aquatic environments. The studies that we have achieved in the last 40 years in the Danube – Danube Delta – Black Sea hydrosedimentary system have revealed strong connections between the characteristics of sedimentary environment, sediment quality and their magnetic properties. In the present paper are discussed results concerning several lakes from Gorgova − Uzlina Depression (Danube Delta), which are added to the lately published magneto-lithological data for sedimentary environments of Meşteru − Fortuna and Matiţa − Merhei depressions. This work, which represents the first part of a composite paper, is particularly focused on the sediment cores collected in the lakes Gorgova, Cuibeda, Uzlina and Isacova. Their <strong>MS</strong> characterization, not neglecting the lithological support, defined by the three main components, namely the <strong>SIL</strong>iciclastic/ minerogenic fraction – <strong>SIL,</strong> <strong>T</strong>otal <strong>O</strong>rganic <strong>M</strong>atter – <strong>TOM</strong> and <strong>CAR</strong>bonates – <strong>CAR,</strong> is approached. Several lithological units are identified, based upon the macroscopic characteristics, magnetic properties and lithological composition. It is interesting to note that although the study area is included in the fluvial delta plain, the recent lacustrine sediments are very thin in some sectors and the short cores (under 60 cm) stop at a level of marine clays (L. Cuibeda). The second part of this study, regarding the surficial sediments from the above-mentioned lakes, and more other ones is published inside of a similar magneto-lithogenetic context. All these data give new evidences for demonstrating the availabilities of the method used to identify the environmental influences on the magnetic susceptibility of lake sediments, and hence to assess the geoecological state of the deltaic area under attention.</p>
Zenodo
2016-12-01
info:eu-repo/semantics/article
889847
1579530900.70564
25277695
md5:3353e4c8c3fba4149bf5959800b524ba
https://zenodo.org/records/889848/files/04_RADAN_parte 2_2016.pdf
public
10.5281/zenodo.889847
isVersionOf
doi
Geo-Eco-Marina
No 22/2016
4
51-74
2016-12-01