Naslov
Chemical composition of allochthonous melt- rocks possibly associated with proposed Krk impact structure in NW Croatia, comparison of three spectroscopic methods and recognition of source-rock lithology

Autori
Čalogović, Marina ; Marjanac, Tihomir ; Fazinić, Stjepko

Izvornik
Geochemistry international (0016-7029) 58 (2020); 308-320

Vrsta, podvrsta i kategorija rada
Radovi u časopisima, članak, znanstveni

Ključne riječi
analytical techniques ; PIXE ; TXRF ; ICP-AES ; melt-rocks ; asteroid impact ; target lithology

Sažetak
Chemical composition of melt-rocks from several localities around proposed post-Eocene Krk impact structure in Croatian carbonate (a.k.a. External) Dinarides was analyzed by three spectroscopic methods to decipher their source lithology. The utilized spectroscopic methods were ICP-AES, TXRF and PIXE+EBS, and their applicability for the analysis of melt-rocks was tested. The three analytical techniques provided comparable elemental compositions of the analyzed samples, but PIXE+EBS proved the best as undestructive method with easier and faster sample preparation, and reliable and consistent results. The obtained results show high discrepancy in chemical composition of analyzed melt-rocks with published data on Eocene Adriatic flysch, but close affinity with Pleistocene Adriatic loess. Consequently, the parent material of melt-rocks was probably loess, which might indicate the approximate age of the melt formation as Pleistocene.

Izvorni jezik
Engleski

Znanstvena područja
Fizika, Geologija, Kemija

POVEZANOST RADA