NTF, Department of Geology, Lj. (NTFGEO)
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Geokemične in mineralne značilnosti permsko-triasnega mejnega profila v Košutnikovem potoku - južne Karavanke = geochemical and mineralogical characterization of Permo-Triassic boundary profile in Košutnik creek section - Southern Karavanke : diplomsko deloŠparemblek, ŽigaPred 252 milijoni let je prišlo do izumrtja več kot 90 odstotkov živalskih in rastlinskih vrst. To se je verjetno zgodilo zaradi globalnega tektonskega dogajanja, ki je povzročilo zelo močan ... vulkanizem na območju tako imenovanih Sibirskih poplavnih bazaltov (ang. %Siberian Traps%), ta pa niz drugih sprememb, ki so vplivale na okolje, floro in favno. Namen raziskav je ugotavljanje globalnih sprememb in povezovanje z lokalnimi razmerami v plasteh zgornje permske in spodnje triasne starosti. Diplomska naloga temelji na analizi profila z območja Košutnikovega potoka v Južnih Karavankah. Profilu obsega kamnine dolomitnega razvoja zgornjepermskih kamnin in spodnjetriasne klastične kamnine. Z rentgensko fluorescenco (XRF) smo določili variabilnosti posameznih izbranih elementov v času odlaganja terigene sedimentne sekvence ob koncu perma in na začetku triasa. Zelo podobni vzorci so pri vsebnostih naslednjih elementov: silicija, aluminija, kalija in titana, kar lahko povezujemo s povečanim vnosom terigene snovi, ki je s kopnega prešla v morsko sedimentacijsko okolje. Vsem vzorcem omenjenega profila smo natančno določili barvo po Munsellu. Razlike v odtenkih so posledica diagenetskih sprememb, ki vplivajo tako na geokemično kakor tudi na mineralno sestavo kamnin. Rdečkast odtenek daje mineral hematit. Kvalitativno in kvantitativno smo obravnavali mineralno sestavo vseh plasti (v skupni debelini štirih metrov), in sicer, s pomočjo rentgenske praškovne difrakcije (XRD). Zaznali smo mineral kalcit, dolomit, kremen, muskovit ter v manjši meri kalijeve glinence, manganov oksid, hematit in pirit. Slednja dva železova minerala kažeta na oksična in anoksična okolja na prehodu iz perma v trias. Tako pridobljeni rezultati bodo uporabni za nadaljnje raziskave podobnih sekvenc na območju Južnih Karavank (Brsnina) in tudi drugod po Sloveniji (Idrijca, Masore, Skopačnik%) ter za primerjavo, ki do sedaj tako podrobno še ni bila narejena.Type of material - undergraduate thesis ; adult, seriousPublication and manufacture - Ljubljana : [Ž. Šparemblek], 2015Language - slovenianCOBISS.SI-ID - 1221214
Author
Šparemblek, Žiga
Other authors
Dolenec, Matej, 1974- |
Šmuc, Andrej
Topics
perm |
trias |
geokemija |
mineralogija |
XRF |
XRD |
Košutnikov potok |
Južne Karavanke
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NTF, Department of Geology, Lj. |
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Geologija D ŠPAREMBLEK Žiga Geokemične IN: 000015609 Geologija D ŠPAREMBLEK Žiga Geokemične IN: 000015609 |
available - outside loan, loan period: 14 days
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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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Šparemblek, Žiga | |
Dolenec, Matej, 1974- | 21372 |
Šmuc, Andrej | 20249 |
Source: Personal bibliographies
and: SICRIS
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