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Značilnosti geokemične sestave jezerske krede v Srpenici : diplomsko delo = Properties of geochemical composition of lacustrine chalk in Srpenica : diploma thesisKovačič, Katarina, fizičarka, 1981Da bi ugotovili značilnosti geokemične sestave jezerskega sedimenta blizu Srpenice, smo na 11,3 metrih profila v opuščenem glinokopu tega sedimenta vzorčili na dva načina. Prvi način vzorčenja je ... potekal sistematično na vsakih 10 cm profila (Sp vzorci). Tako odvzetih vzorcev je bilo skupno 112. Drugi način vzorčenja pa je potekal namensko, in sicer po laminah (SL vzorci). Takih vzorcev je bilo skupno 48. Vsi vzorci so bili kemijsko analizirani (oksidi, kovine, celotni ogljik, celotno žveplo in žaroizguba). Na vzorcih, ki so bili vzeti po laminah, je bila opravljena tudi granulacijska analiza. Analize so pokazale, da gre v primeru laminiranega jezerskega sedimenta pri Srpenici predvsem za karbonatni sediment (povprečje vsebnosti CaO znaša 37,5 % in MgO 7,4 %) s silikatnimi primesmi v nekaterih laminah. Geokemične razlike med svetlimi in temnimi laminami so predvsem v povečani vsebnosti CaO, MgO in celotnega ogljika v svetlih laminah, medtem ko je v temnih povečana vsebnost vseh ostalih oksidov in kovin. Največja razlika je predvsem v vsebnosti SiO2, ki je skoraj enkrat večja v temnih (14 %) kot v svetlih (8 %) laminah. Med kovinami so najbolj povečane vsebnosti predvsem pri Ni, Cu, Co in Zr. Granulacijska analiza je pokazala, da je sestava jezerskega sedimenta meljasta ter da so svetle lamine večinoma povezane z drobnejezrnato frakcijo, medtem ko so temne lamine bolj grobozrnate.Type of material - undergraduate thesis ; adult, seriousPublication and manufacture - Ljubljana : [K. Kovačič], 2008Language - slovenianCOBISS.SI-ID - 2121045
Author
Kovačič, Katarina, fizičarka, 1981
Other authors
Pezdič, Jože |
Gosar, Mateja, 1963-
Topics
jezerski sediment |
lamine |
geokemija |
kvartar |
Srpenica |
lacustrine sediment |
laminae |
geochemistry |
Quarternary |
Srpenica
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DRS, in which the journal is indexed
Database name | Field | Year |
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Links to authors' personal bibliographies | Links to information on researchers in the SICRIS system |
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Kovačič, Katarina, fizičarka, 1981 | 30878 |
Pezdič, Jože | 08230 |
Gosar, Mateja, 1963- | 10667 |
Source: Personal bibliographies
and: SICRIS
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