ZONAL DIVISION OF EOCENE DEPOSITS BY SMALL FORAMINIFERA FROM BOREHOLE MATERIALS OF «LANDJAR 2»
DOI:
https://doi.org/10.46991/PYSU:C/2009.43.2.028Keywords:
Langjar 2, Eocene depositsAbstract
The present study is focused on the zonal distribution of Eocene deposits from the borehole materials of «Langjar 2» (South-East Armenia). Studying the area and analyzing 35 plankton Foraminifera species several zones have been revealed. Morozovella aragonesis and Acarinina pentacamerata (Lower Eocene), Acarinina bullbrooki, Ac. rotundimarginata, Hantkenina alabamensis, Orb. beckmanii and Truncorotaloides rohri (Middle Eocene), Globigerapsis semiinvoluta and Globorotalia cocoaensis (Upper Eocene). By benthonic Foraminifera the following zones have been revealed: Heterolepa eocaena, Uvigerina costellata-Cibicidoides landjaricum (Middle Eocene) and Planulina costata (Upper Eocene). According to our data the last zone is divided into two subzones – Cibicidoides truncatus and Heterolepa pygmea.
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