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    STUDIA GEOLOGIA - Issue no. 1-2 / 2014-2015  
         
  Article:   DASYCLADALEAN ALGAE FROM UPPER JURASSIC-LOWER CRETACEOUS LIMESTONES OF PIATRA CRAIULUI MASSIF (SOUTH CARPATHIANS, ROMANIA) AND THEIR RELATIONSHIP TO PALEOENVIRONMENT.

Authors:  IOAN I. BUCUR, EMANOIL SĂSĂRAN. 		 
       
         
  Abstract:  The Mesozoic limestones of Piatra Craiului Massif were deposited in the Dâmbovicioara sedimentary area, at the easternmost part of the Getic carbonate platform. In order to study the microfacies and to provide a more detailed biostratigraphy, we sampled the carbonate succession from Piatra Craiului Massif along several sections. Identified microfacies point to reef slope, carbonate platform margin and restricted, lagoon-type internal depositional environments. Some of the identified microfossils are biostratigraphic markers for the Tithonian-Lower Valanginian. The calcareous algae form associations typical for reef slopes and internal platforms. The latter can be subdivided into: (1) restricted environments (low-energy subtidal-intertidal) dominated by rivulariacean-type cyanobacteria, and (2) open-marine environments (moderate to high-energy subtidal) where dasycladalean algae are more frequent.

Keywords: dasycladalean algae, paleoenvironment, platform carbonates, Upper Jurassic-Lower Cretaceous.

Received: April 2014; accepted May 2014
Available online 16 June 2014
DOI: http://dx.doi.org/10.5038/1937-8602.59.1.1 		 
         
     
         
         
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