BIOSTRATIGRAPHY AND SEDIMENTATION OF SOME SUBSURFACE QUATERNARY BOREHOLE SECTIONS IN BALTIM AREA, MEDITERRANEAN COASTAL PLAIN OF EGYPT.

BIOSTRATIGRAPHY AND SEDIMENTATION OF SOME SUBSURFACE

QUATERNARY BOREHOLE SECTIONS IN BALTIM AREA,

MEDITERRANEAN COASTAL PLAIN OF EGYPT.

AMER A. SELIM* AND SAMIHA M. ZAZOU”
*Department of Geology. University of Alexandria. Egypt.

-*Department of Geology, Institute of Coastal Research. Alexandria, Egypt.

ABSTRACT
The subsurface Ni Ie Del ta successions encountered
in some boreholes in Baltim area comprise sediments
of sand. silt and clay sizes. The sediments east
of Lake Buru1lus outlet are mostly of sand sizes
while those west of the outlet and south of the Lake
are mostly of silt and clay sizes. Marked vertical
as well as lateral variations in grain size textural
parameters. carbonate and organic matter contents
a re recorded among the sediments of different grade
sizes. The recorded faunal assemblages are of
Quaternary affinities and represent marine and brackish
water environments. The results of grain size analysis
and faunal charactp.ri~tics indicate that the sediments
are of mix~d environme~ts.