Granitoids cutting the sheeted
dyke complex (Göksun metaophiolite), the Elbistan ensimatic island arc
volcanoclastic sequence of Neocomian age and the Kabaktepe metamorphites
(Bitlis/Pötürge metamorphites) of Paleozoik-Lower Triassic age respectively,
outcrop around Afsin-Elbistan-Göksun. The units deposited during Upper
Cenonian-Eocene overlie these older units with an angular unconformity starting
with a basal conglomerate. In the study area, outcropped granitoids have not
been developed during island arc eruptions. These granitoids take place on the
collision belts of the subduction zone formed by the N-S directed compressional
forces of late Cretaceous started in Lower Cretaceous and increased after
Neocomian. Their development is due to the increasing crustal thickness and
sinking of the island arc deposits and its basement which is oceanic crust
during Coniacian-Upper Santonian. Granitoids are the differentiated products of
anatectic magma (diorite, monzonite, syenite, tonalite, granodiorite, granite,
alcaline granite and silexite). Which is formed from melting of oceanic (Göksun
metaophiolite) and crustal (Kabaktepe metamorphites) rocks together or sepertly
at high temperatures. This anatectic magma is named and defined as Afsin
magmatism for the first time. However, except these wide spread granitoids
intrusions in Eastern Taurus, it was also observed that seme granitic rocks
(diorite, monzonite, syenite, tonalite, granodiorite, granite and alcaline
granite). Which don't show any intrusive features and magmatic phase. They
formed by recrystallization from metamorphites rocks, island arc volcanoclastic
deposits and ophiolites (gabbro, sheeted dyke complex and volcanosedimentary
rocks) insitu. Granitoids were subjected the low grade regional metamorphism
(greenschist facies) probably in Upper Santonian-Campanian.
Primary Language | English |
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Subjects | Engineering |
Journal Section | Articles |
Authors | |
Publication Date | December 1, 1986 |
Published in Issue | Year 1986 Volume: 107 Issue: 107 |
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