Living thecamoebinid distribution, biotopes and biofacies, in an upper deltaic plain lacustrine subenvironment, Lac del Allemands, Louisiana

• Drew Haman ^[1]
  1. [1] Chevron, USA, Houston, Texas
• Localización: Revista española de micropaleontología, ISSN 0556-655X, Vol. 22, Nº. 1, 1990, págs. 87-100
• Idioma: inglés
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• Resumen

  • The distribution of living thecamoebinids is documented in Lac des Allemands, a shallow, fresh to very slightly brackish-water lake located on the upper plain of the Mississippi River deltaic complex. The thecamoebinid distribution is discussed in relation to environmental parameters measured at the time of sample collection. Dissolved oxygen content of the location waters is suggested to be one of the prime factors influencing thecamoebinid occurrence. Q-mode cluster analysis permits the delimitation of distinct biotopes. R-mode cluster analysis allows biofacies identification, the strongest biofacies being the Difflugia capreolata - D. urceolata association, in this sub-tropical lacustrine subenvironment.