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Ordovician–carboniferous palynology of el-waha-1 borehole, western desert, Egypt

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Title Ordovician–carboniferous palynology of el-waha-1 borehole, western desert, Egypt
 
Creator Moustafa, T.F
Lashin, Gamal M. A.
Hosny, A.M.
El-Shamma, A. A
 
Subject Carboniferous –Ordovician- El-Waha-1-Palynology
Western Desert
Egypt
 
Description 1484-1499
Diverse acritarchs, chitinozoa, and miospore
assemblages were recovered from the Paleozoic sequence in El-Waha -1 well,
north western part of the Western Desert. Assemblages have many previously
described forms known from the Paleozoic strata in north Gondwana and other
parts in the world. The study revealed that the sedimentation was repeatedly
interrupted , as is confirmed by stratigraphic breaks. It revealed also that
the Ordovician assemblage as well as the lower part of the Silurian are
composed mainly of acritarchs, less chitinozoans and no miospores have been
recorded. Real sporomorphs are recorded only at the upper part of the Silurian
with smooth spores (Retusotriletes, Ambietisporites, Archaeozonotriletes),
verrucates ones, and Emphanisporites with poorly defined ribs. Early
Devonian is characterized by zonate – camerate, pseudosaccate, a relatively
simple spore types and verrucate ones, that is beside a considerable increase
in diversity of the phytoplankton. Middle Devonian shows the first incoming of
small sculptured camerate spores with thick exospores wall and large spinate
forms related to genera Hystrichospora, Grandisporites and
Ancyrosporites. Early Carboniferous is dominated by vascular plant taxa
(Ferns) including laevigate, cingulizonate and cavate forms. No saccate pollen
grains (Gymnosperms) have been recorded in the studied interval.
 
Date 2016-06-27T10:22:53Z
2016-06-27T10:22:53Z
2014-08
 
Type Article
 
Identifier 0975-1033 (Online); 0379-5136 (Print)
http://hdl.handle.net/123456789/34489
 
Language en_US
 
Rights CC Attribution-Noncommercial-No Derivative Works 2.5 India
 
Publisher NISCAIR-CSIR, India
 
Source IJMS Vol.43(8) [August 2014]