Workshops and fieldtrips

Workshop

Provenance of clastic sediments and mafic rocks chronology

2nd of November 2023

The meeting had the role of presenting the partial results of the DEVOBAS project, but also of introducing junior researchers and students interested in the elaboration of bachelor's, dissertation, or Ph.D. theses on the topic of isotopic geochronological techniques.

In the "Ludovic Mrazec" hall of the Department of Geology, Mineralogy, and Paleontology, eight preliminary works were presented by the project members and collaborators. These presentations addressed various topics in the topic of the project.

1.     Roban R.D.: project PCE 50/2022: topic and target

2. Roban R.D., Melinte M. C., Lazar I. and I. Munteanu: Ceahlău - Severin Suture of Carpathians: tectonic setting, lithostratigraphy and sedimentology

3.     Ducea M.D., Luffi P., and A. Ducea:  Chronological techniques used for mafic rock (Sm-Nd) and siliciclastic sediments (U-Pb) (+ short visit of Petrochronology Laboratory after presentations)

4. Luffi P., Costin G. and R. Roban: Basic and ultrabasic rocks of Ceahlău-Severin Suture - tectonic inferences constrained by petrology and geochemistry

5. Luffi P., Costin G. and R. Roban: Provenance of chrome spinel from Upper Jurassic -Lower Cretaceous deposits of Ceahlau-Severin Suture

6. Lazar I.: Late Jurassic carbonates sedimentation in the Black Flysch Domaine (Maramureş Mountains): microfacies analyses and comparison with key sections from the Southern and Western Carpathians

7. Roban R.D., Luffi P., and M. Ducea: Upper Jurassic - Lower Cretaceous deposits of Ceahlau Severin Suture: Detrital zircons U-Pb provenance

8. Munteanu I.: Hyperextension – a possible scenario opening Ceahlău-Severin Ocean based on structural relationships

All the ~ 20 students and junior researchers had the opportunity to visit the geochronological laboratory and the associated preparation rooms, guided by    Dr. Mihai Ducea and Dr. Relu Roban (https://sites.google.com/ducea.com/ubpetrochronlab/home)

Left: Dr. Relu Roban, the principal investigator presenting the tectonic setting of the Ceahlau-Severin Suture, and the partial results on the provenance of the J3-K1 sediments, based on the U-Pb isotopic ages of the detrital zircons. Right, Dr. Peter Luffi, a specialist in the geochemistry of mafic and ultramafic rocks 

Prof. Dr. Mihai Ducea presents to the students the geochronology laboratory of the University of Bucharest, which he manages. 

Left. Prof. Dr. Iulia Lazar, a collaborator from the University of Bucharest, was involved in problems of stratigraphy and paleontology of the Mesozoic deposits in the Ceahlau-Severin Suture. Right. Lect. Dr. Ioan Munteanu presents hypotheses regarding the opening of the Ceahau-Severin Ocean.