Dur Al Abd Fm
    Period: 
    
  
  
      Paleogene    
    
    Age Interval: 
    
  
  
      Rupelian, Lb (1,3)
    
    Province: 
    
  
  
      Libya    
    Type Locality and Naming
Column: Tripolitania and Sirte Basin, Cyrenaica Basin
Synonym:
Lithology and Thickness
Limestone with interbedded gypsum and claystone
    Lithology Pattern: 
    
   
  
  
      Gypsiferous claystone
    
Relationships and Distribution
Lower contact
Regionally, the schematic strat column indicates the next older unit as Wadi Thamit Gr
Upper contact
Regionally, the schematic strat column indicates the next younger unit as Greir Bu-Hascisc Fm
Regional extent
GeoJSON
      {"type":"Feature","geometry":{"type":"MultiPolygon","coordinates":[[[[13.93,32.66],[15.59,31.26],[15.01,30.64],[16.75,28.88],[17.75,23.89],[18.75,23.13],[19.91,23.81],[20.56,23.71],[21.92,24.23],[22.63,26.01],[24.96,26.94],[25.01,29.2],[24.69,30.15],[24.98,30.69],[24.84,31.45],[23.1,31.95],[22.95,31.76],[21.04,32.42],[20.43,32.4],[20.35,33.25],[19.37,33.1],[18.07,33.45],[18.08,34.14],[17.63,35.32],[16.6,34.85],[14.91,33.87],[13.93,32.66]]]]}}    
    Fossils
Age
      Rupelian    
    
     Age Span: 
    
          
    
  
  
        Beginning stage: 
    
  
  
      Rupelian    
    
        Fraction up in beginning stage: 
    
  
  
      0.0    
    
        Beginning date (Ma): 
    
  
  
      33.90    
    
        Ending stage: 
    
  
  
      Rupelian    
    
        Fraction up in the ending stage: 
    
  
  
      1.0    
    
        Ending date (Ma):  
    
  
  
      27.29    
    Depositional setting
    Depositional pattern:  
    
      
    
   
  
Additional Information
    Compiler:  
    
  
      Chart derived from: USGS Correlation Chart and Columnar Section for Rocks in Libya, 1963. Descriptions from: Hallet, Don: Petroleum Geology of Libya, 2002.