Pre-Neogene rock units
in Karaburun Peninsula are represented by a relatively autochthonous succession
of Paleozoic-Mesozoic age and various tectonostratigraphic allochthonous units.
Küçükbahçe Formation forms the lowermost Paleozoic unit of the
"autochthonous" succession and is made up of Cambro? – Ordovician detritic
rocks in turbiditic nature. It is overlained by Silurian-Carboniferous aged
Dikendağı formation with a graditional contact which is characterized by
abundant chert lydite content and Visean-Bashkirian aged Alandere formation which
is represented by detritic and carbonate rocks. These units are cut by Karaburun
granodiorite of Early Triassic age. The Paleozoic basement is unconformably
overlained by a Mesozoic aged succession which commences with the Gerence
formation consisting of conglomerate and/or Naticella
bearing
sediments of "vermicular facies" of Scythian age and the succession
continues with carbonate dominant detritic deep marine sediments of Anisian
age. Toward the end of Anisian, this units first grade into mainly the red
micritic carbonates of the "ammonitico rosso facies" and then grade
into the neritic carbonates of Camiboğazı formation of Early Ladinian age. The
Camiboğazı Formation is gradationally overlained by Megalodon bearing Güvercinlik formation of Carnian-Rhaetian age
consisting of stromatolitic dolomite, sandstone, mudstone and iron/bauxite
pisolite bearing conglomerates. The succession continues with Nohutalan
formation which consists of neritic carbonates with Paleodasycladus and Cladocoropsis.
It is
unconformably overlained by the Albian-Aptian aged Aktepe formation fossils.
After a probable hiatus, Campanian-Maastrichtian aged Balıklıova formation
unconformably covers the former units. Balıklıova formation consists of
Karahasan limestone member of shallow marine limestones in the lower, and
pelagic limestones-marls in the middle, and Haneybaşı member of
sandstone-mudstone alternation of flysch facies in its upper levels. Tekedağı
formation, Idecik unit, Izmir flysch and Yeniliman serpentinite are
tectonically related with relatively autochthonous Paleozoic and Mesozoic rock
units. (Late?) Permian aged Tekedağı formation is made up of detritic sediments
and bioclastic limestones. Ladinian-(Early) Carnian/(Norian?) aged Idecik unit
is made up of detritic sediments and spilitic lavas. Campanian-Early Tertiary
(Danian?) aged Izmir flysch is a blocky flysch. All of these units are
unconformably overlained by various rock units of Neogene and Quarternary age.
Birincil Dil | İngilizce |
---|---|
Konular | Mühendislik |
Bölüm | Makaleler |
Yazarlar | |
Yayımlanma Tarihi | 1 Ocak 2006 |
Yayımlandığı Sayı | Yıl 2006 Cilt: 132 Sayı: 132 |
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