A Geophysical-Geochemical Approach to the Study of the Paleogene Julian—Slovenian Basin 'Megabeds' (Southern Alps—Northwestern Dinarides, Italy/Slovenia)
| Autor: | Ž. Pogačnik, Gian Andrea Pini, Giorgio Tunis, Andrea Festa, Kim Senger, Kei Ogata |
|---|---|
| Přispěvatelé: | Ogata, K., Pogacnik, Z., Tunis, G., Pini, G. A., Festa, A., Senger, K., Geology and Geochemistry |
| Jazyk: | angličtina |
| Rok vydání: | 2019 |
| Předmět: |
010504 meteorology & atmospheric sciences
Carbonate platform Carbonate Mass Transport Deposits Megabreccias Geoelectric Profiling Geochemical Fingerprinting Mass-Transport Deposits Outer Dinarides Seismic-Reflection Sedimentation Architecture Turbidite Mudstones Chemistry Slovenia carbonate mass transport deposits megabreccias geoelectric profiling geochemical fingerprinting Mudstone Geochemistry Fluorescence spectrometry 010502 geochemistry & geophysics 01 natural sciences Soft-sediment deformation structures Sedimentary depositional environment geochemical fingerprinting Carbonate mass transport deposit Marl SDG 14 - Life Below Water Outer Dinaride megabreccias 0105 earth and related environmental sciences lcsh:QE1-996.5 carbonate mass transport deposits Megabreccia lcsh:Geology Carbonate Mass Transport Deposit Clastic rock Mass-Transport Deposit Carbonate mass transport deposits General Earth and Planetary Sciences Sedimentary rock geoelectric profiling Paleogene |
| Zdroj: | Geosciences Volume 9 Issue 4 Geosciences, Vol 9, Iss 4, p 155 (2019) Geosciences (Switzerland), 9(4):155, 1-17. MDPI Ogata, K, Pogačnik, Ž, Tunis, G, Pini, G A, Festa, A & Senger, K 2019, ' A geophysical-geochemical approach to the study of the paleogene julian-slovenian basin “megabeds” (Southern alps-northwestern dinarides, Italy/Slovenia) ', Geosciences (Switzerland), vol. 9, no. 4, 155, pp. 1-17 . https://doi.org/10.3390/geosciences9040155 |
| ISSN: | 2076-3263 |
| DOI: | 10.3390/geosciences9040155 |
| Popis: | The Paleogene &ldquo megabeds&rdquo of the Julian-Slovenian Basin are regional, basin-wide deposits, produced by catastrophic carbonate platform collapses. They record the emplacement of a bipartite slide mass behaving as a cohesive blocky/debris flow in the lower part, and as a grain to turbulent flow in the upper part. Several types of primary (sedimentary) soft sediment deformation structures testify fluid overpressure conditions during emplacement. Such structures are identified within a brecciated, fine grained matrix that encloses and intrudes slide blocks and clasts, characterized by NE-, NW- and SW-directed paleo-transport directions, indicating a depositional setting close to the basin margins. Here we present an updated review of some representative megabeds, exposed in the open-pit quarry outcrops of Anhovo (SW Slovenia). In particular, we here discuss new interpretations based on X-ray fluorescence spectrometry (XRF), thermo-gravimetry (TG) and electric resistivity tomography (ERT). Our results indicate that basal marly clasts of the megabeds are markedly different from the uppermost draping marls, suggesting two different coeval sources. The relationships with the underlying successions are strongly erosive, with deep localized scouring of the substrate and amalgamations between different megabeds, and the depositional units inside individual megabeds, supporting the geochemical differences. |
| Databáze: | OpenAIRE |
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