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Paper Information

Journal:   IRANIAN INTERNATIONAL JOURNAL OF SCIENCE   Spring 2001 , Volume 2 , Number 1; Page(s) 55 To 64.
 
Paper: 

CORRELATING MARINE PALYNOMORPH VARIATIONS WITH SEQUENCE BOUNDARIES OF UPPER JURASSIC SEDIMENTS IN A BASIN OF NORTHERN SWITZERLAND

 
 
Author(s):  GHASEMINEZHAD EBRAHIM*
 
* University of Tehran, Tehran - Iran.
 
Abstract: 
Variations in the number of dinoflagellate cysts species recovered from the Rhodano-Swabian sedimentary basin in northern Switzerland have been correlated with sequence and sedimentary cycles established for this basin. The variation in dinoflagellate cyst abundance corroborates the sequence boundaries erected by Gygi et al. (1988) using other parameters such as lithology and macrofossil content of the sediments. Highstands of sea level are marked by a sharp increase in species diversity (sometimes up to 50). In contrast, lowstands are indicated by a sharp decline in the abundance of species: in a case only 3 species
 
Keyword(s): DINOFLAGELLATES, UPPER JURASSIC, SEQUENCE BOUNDARIES, SWITZERLAND
 
References: 
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