Afyon zonu örtü birimlerinin yaşı ve tektonikönemi u pb kırıntılı zirkon jeokronolojisi

Afyon Zone in the Anatolide-Tauride block is represented by a Pan-African metamorphic basement and unconformably overlying lower Triassic-lower Tertiary low-grade metamorphic cover rocks. The cover sequences commences with a thick basal metaconglomerate. It comprises two distinct lithologies, characterized by quartz pebbles and carbonate pebbles, and grades into a wine red-purple-reddish-gray-mottled metaclastic sequence, made up of a sandstone-shale-mudstone and quartzite alternation. The grain size decreases upwards and clayey limestone becomes dominant with an increase in carbonate content. The cover rocks are composed dominantly of dolomitic limestones at the top; metacarbonates contain Rozetta marbles and chert intercalations. The age of the metaconglomerates above the metamorphic rocks and overlying metaclastic sequence is considered as Scythian, although the supporting evidence is scarce. Hence, a detailed and systematic geochronologic campaign (U-Pb analyses on detrital zircons) has been carried out to determine the age and provenance of cover rocks in the Afyon Zone. Neoproterozoic zircons (54.5%) form the most abundant concordant (90-110%) zircon population while Palaeozoic (13.7%) and Palaeoproterozoic (12.8%) zircons form the other important populations. The presence of Mezoproterozoic (8.6%) and Archean (5.5%) zircons is also important to note. Abundant Triassic (4.3%) and rare Jurassic zircons suggest that the maximum depositional age of the metaclastic sequence is late Triassic (Rhaetian) - early Triassic. The new age data have important tectonic implications, because the metaclastic rocks are correlated with the opening of the northern branch of Neotethyan ocean. The abundance of Edicaran and Cryogenian (40.0%) zircons, co-existence of Tonian (14.5%) and Sitenian (6%) detrital zircons, the presence of Palaeoproterozoic (12.8%) and Mezoproterozoyik (8.6%) zircons are consistent with Avalonian-Cadomian magmatic arc located in the north of Gondwana super-continent and Arabian-Nubian shield as the source areas. Archean zircons supports this hypothesis; they can be derived from Sahara Metacraton and West African Craton. Similarly, the Precambrian zircons may well be derived from the Menderes Massif orthogneisses and metamorphic basement of the Afyon Zone. Menderes Massif may also be suggested as a source area for Cambrian, Ordovician and Permian zircons. Ordovician zircons may come from the Sakarya Continent as well. Devonian and Carboniferous zircons must be derived from Sakarya Continent, Cyclades or Rhodope Massif because they are not reported from the Anatolide-Tauride block
69. Türkiye Jeoloji Kurultayı, 11-15 Nisan 2016


Bozkurt, Erdin (null; 2018-04-23)
Anadolu-Toros bloğunun en önemli tektonik birlikleri arasında yeralan Afyon Zonu Pan-Afrikan metamorfiktemeli ile metamofikleri bölgesel bir uyumsuzlukla üzerleyen erken Triyas−erken Tersiyer yaşlı düşük dereceli örtü metasedimanları ile temsil edilir. Örtü istifi, temel birimlerinin üzerine kalın bir taban metaçakıltaşı ile gelir. Metaçakıltaşı kuvars çakıllı ve karbonat çakıllı olmak üzere başlıca iki farklı litoloji ile temsil edilirken, üstte doğru tedrici olarak kumtaşı-şeyl-çamurtaşı ve kuvarsit ardaş...
AKIMAN, O; ERLER, A; GONCUOGLU, MC; Güleç, Nilgün Türkan; GEVEN, A; TURELI, TK; KADIOGLU, YK (1993-12-01)
The closely related assemblage of igneous and metamorphic rocks that lie within a triangular area approximately bounded by the Tuzgolu Fault, the Ecemis Fault and the Izmir-Ankara-Erzincan Suture and between the lines connecting Ankara, Sivas and Nigde is called the Central Anatolian Crystalline Complex (CACC). The granitoids cropping out within the CACC can be divided areally into three groups: (1) a large number of individual small plutons which form an arcuate set and curve from NE-SW to NW-SE and extend...
Simulation of eddy-driven phytoplankton production in the Black Sea
Oguz, T; Salihoğlu, Barış (2000-07-15)
A three dimensional, three-layer biological model is used to assess impact of eddy-dominated horizontal circulation on the spatial and temporal variations of plankton biomass in the Black Sea. Simulations are shown to exhibit patchy distributions of phytoplankton biomass as inferred from satellite images, and their intensities agree reasonably well with observations. Overall performance of the three layer model points to its potential capability as a practical alternative tool to more complex and computatio...
Types and genesis of the enclaves in Central Anatolian granitoids
Kadioglu, Yk; Güleç, Nilgün Türkan (1999-07-01)
Central Anatolian granitoids range from tonalite-monzonite, through granodiorite, to alkali feldspar granite in composition, and typically have angular to oval-shaped mafic magmatic and metamorphic enclaves. These enclaves range from millimetres up to metres in size. The mineral compositions, textural features and amphibole chemistry reveal that the enclaves can be genetically differentiated into three types as xenolithic enclaves, magma segregation enclaves and magma mixing/mingling enclaves. The xenolithi...
A condensed mesozoic succession north of Izmir: A fragment of the anatolide-tauride platform in the Bornova Flysch zone
Okay, Aral I.; Altıner, Demir (2007-01-01)
The Bornova Flysch Zone consists of large blocks of Mesozoic limestone, basalt, serpentinite and radiolarian chert in a highly sheared clastic matrix of latest Cretaceous to Paleocene age. We describe a condensed Mesozoic section from a limestone block near the village of Urbut, 27 km southwest of Bigadic, north of Izmir. The section, 81 m thick, starts with massive, thickly-bedded Upper Triassic carbonates with megalodonts and foraminifera characteristic of Late Norian-Rhaetian. These are unconformably ove...
Citation Formats
E. Bozkurt, “Afyon zonu örtü birimlerinin yaşı ve tektonikönemi u pb kırıntılı zirkon jeokronolojisi,” presented at the 69. Türkiye Jeoloji Kurultayı, 11-15 Nisan 2016, 2016, Accessed: 00, 2021. [Online]. Available: