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7478234 
Journal Article 
207Pb-206Pb, 40Ar-39Ar and fission-track geothermochronology quantifying cooling and exhumation history of the Kaman-kirşehir region intrusions, Central Anatolia, Turkey 
Boztuǧ, D; Güney, O; Heizler, M; Jonckheere, RC; Tichomirowa, M; Otlu, N 
2009 
1 
Turkish Journal of Earth Sciences
ISSN: 1300-0985
EISSN: 1303-619X 
18 
1 
85-108 
English 
The Kaman-Kιrşehir region intrusions were generated in a post-collisional extensional setting following Cenomanian-Turonian docking of an oceanic island arc, comprising the supra-subduction zone (SSZ) Central Anatolian ophiolite (CAO), onto the Tauride-Anatolide Platform (TAP). These granitoids have been named, from N to S, the Çamsarι quartz syenite, Hamit quartz syenite, Bayιndιr nepheline-cancrinite syenite, Durmuşlu nepheline-nosean-melanite syenite porphyry and Baranadaǧ quartz monzonite. They intrude the crustal metasediments of the Central Anatolian Crystalline Complex (CACC) and CAO and are unconformably overlain by Upper Paleocene to Lower-Middle Eocene sediments. The single-zircon 207Pb-206Pb evaporation age of the Çamsarι unit is 95.7±5.1 Ma; those of the Hamit and Baranadaǧ units are indistinguishable with a weighted mean of 74.3±4.5 Ma. The amphibole 40Ar-39Ar ages of the Hamit and Baranadaǧ units are almost identical with a weighted mean of 72.7±0.1 Ma. The apatite fission-track age vs elevation plot for the Çamsarι, Hamit, Durmuşlu and Baranadaǧ samples reveals rapid exhumation (>1 km/Ma) between ∼57 and ∼61 Ma, consistent with the results of track-length modelling. This Early-Middle Paleocene rapid exhumation is thought to result from uplift triggered by continent (TAP) - continent (Eurasian plate; EP) collision following the closure of İzmir-Ankara-Erzincan (İAE) ocean that also initiated the formation of peripheral foreland basins in central Anatolia. Copyright © TÜBİTAK. 
Amphibole 40Ar-39Ar; Apatite fission-track; Central Anatolia; Exhumation; Kaman-kirşehir region; Single zircon 207Pb-206Pb; argon-argon dating; basin evolution; conference proceeding; cooling; fission track dating; igneous intrusion; lead-lead dating; thermochronology; Anatolia; Eurasia