The STUDIA UNIVERSITATIS BABEŞ-BOLYAI issue article summary

The summary of the selected article appears at the bottom of the page. In order to get back to the contents of the issue this article belongs to you have to access the link from the title. In order to see all the articles of the archive which have as author/co-author one of the authors mentioned below, you have to access the link from the author's name.

 
       
         
    STUDIA GEOLOGIA - Issue no. 1 / 2011  
         
  Article:   NEW DATA ON THE UPPER JURASSIC – LOWER CRETACEOUS LIMESTONES FROM BIHOR MOUNTAINS: CASE STUDY OF GÂRDA SEACĂ - HODOBANA REGION, ROMANIA.

Authors:  EMANOIL SĂSĂRAN, IOAN I. BUCUR.
 
       
         
  Abstract:  This study reconsiders problems regarding lithological succession, facies, and carbonate microfacies, and the biostratigraphic markers of the Upper Jurassic-Lower Cretaceous carbonates from the Bihor Mountains. Three types of facies (external marginal, subtidal, and peritidal) were separated for the Upper Jurassic, and two (coastal-peritidal and open shelf) for the Lower Cretaceous carbonates. The micropaleontological assemblages identified contain species that allow the separation of the two formations of different age: Labyrinthina mirabilis, Kurnubia palastiniensis, Neokilianina rahonensis, Clypeina sulcata (Kimmeridgian-Lower Tithonian) and Parakoskinolina? jourdanensis, Montseciella arabica, Palorbitolina lenticularis, Falsolikanella danilovae (Barremian-Lower Aptian). Field observations and data obtained from studies of thin sections and polished slabs indicate that a large part of the Triassic (Ladinian-Lower Carnian) and Lower Cretaceous limestones from Gârda Seacă-Hodobana region, delimited on the geological maps 1:50.000 scale, sheets 56b (Poiana Horea) and 56d (Avram Iancu), belongs in fact to the Upper Jurassic carbonate succession.

Key words: Carbonate microfacies and facies, biostratigraphy, Upper Jurassic-Lower Cretaceous limestone, Bihor Mountains, Romania.
 
         
     
         
         
      Back to previous page