SVIBOR - Project code: 1-09-023

MINISTRY OF SCIENCE AND TECHNOLOGY

Strossmayerov trg 4, HR - 10000 ZAGREB
tel.: +385 1 459 44 44, fax: +385 1 459 44 69
E-mail: ured@znanost.hr

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Project code: 1-09-023


Geodynamics and tectonic evolution of the Dinaric carbonate platforms


Main researcher: JELASKA, VLADIMIR (92875)


Assistants
Type of research: basic
Duration from: 01/01/91. to 12/01/94.
Papers on project (total): 53
Papers on project quoted in Current Contents: 2
Institution name: Prirodoslovno-matematički fakultet, Prirodoslovni odjeli, Zagreb (119)
Department/Institute: Department of Geology
Address: Ulica kralja Zvonimira 8/II
City: 10000 - Zagreb, Croatia
Communication
Phone: 385 (0) 416-260
Fax: 385 (0) 432-526
Summary: The research of Mesozoic carbonates, deposited in an intra-oceanic (isolated) carbonate platform setting and, occupying at present the largest part of Croatia, includes sequence stratigraphy (identification of sedimentary cycles and their biostratigraphic, sedimentologic and paleoenvironmental definition), magnetostratigraphy, and standard chronostratigraphy. The aim of the research is a better integration of the independently derived data into a unifying scheme, which would enable the reconstruction of the geodynamic evolution of what is to-day the Outer Dinaric Mountains and the Adriatic islands, including the understanding of their primary paleogeographic situation (one or more carbonate platform(s)), characterization of their particular anatomic features and of their evolution, and their accomodation within the present tectonic framework.

Keywords: carbonate platform, correlation, synthesis, cyclicity, biota, eustasy, tectonics

Research goals: Dinaridic carbonate platform(s) offer good possibilities for field-based investigations beacuse of their wide areal distributions, large thickness, and good exposures. Platform genesis can be reconstructed by evaluating its autonomy (independence of terrigenous influence, etc.) and geodynamic evolution, which includes the following main goals of investigations: -determination of the relationship and interplay between main regulators (tectonics, subsidence, relative sea-level oscillations) and the evolution of marginal platform, slope, and interplatform facies; -identification of regional variations in platform physiography; -differentiation of internal ("autocyclic", i.e. local to regional) and external ("allocyclic", i.e. global) effects; -interpretation of rhythmic sequences, with special emphasis on variations in water depth and areally restricted environmental conditions; -recognition and tenative explanation of abrupt changes of the organic world ("mass extinctions"), particulary affecting the diversity of marine invertebrate taxa, which repeatedly occured during Mesosoic times (e.g. at the Triassic/Jurassic and Cenomanian/Turonian boundaries) and which marked the beginning and the end of the Mesosoic era; -identification of the "sedimentation crises" and "biologic crises" and definition of their mutual relationships. Intergration of all available data will led to establishment of boundaries of sedimentary sequences, which will, within the stratigraphic framework of the area under invastigation, represent the main scientific contributions of this study and will serve as a basis for establishing the geodynamic evolution of the Dinaridic carbonate platform(s).

COOPERATION - PROJECTS



COOPERATION - INSTITUTIONS


  1. Name of institution: Institut za geološka istraživanja
    Type of institution: State institute
    Type of cooperation: Joint publishing of scientific papers
    City: 10000 - Zagreb, Croatia

  2. Name of institution: Inštitut za geologijo, geotehniko in geofiziko
    Type of institution: State institute
    Type of cooperation: Joint publishing of scientific papers
    City: 61000 - Ljubljana, Slovenija
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