Geochemical Constraints on the Petrogenesis of Cenozoic I-Type Granitoids in Northwest Anatolia, Turkey: Evidence for Magma Generation by Lithospheric Delamination in a Post-Collisional Setting

Köprübaşı, Nezihi; Aldanmaz, Ercan

doi:10.2747/0020-6814.46.8.705

Cited by 82 publications

(19 citation statements)

References 41 publications

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“…They are both granodioritic and granitic in composition and are metaluminous, calc‐alkaline, medium to high‐K rocks. Their trace elements patterns are similar to both volcanic‐arc and calc‐alkaline postcollision intrusions [ Koprubasi and Aldanmaz , 2004; Karacik et al , 2008]. …”

Section: Geological Setting Of the North Aegean And The Marmara Regionmentioning

confidence: 99%

Fission‐track thermochronology, vertical kinematics, and tectonic development along the western extension of the North Anatolian Fault zone

Hejl¹,

Bernroider²,

Parlak³

et al. 2010

J. Geophys. Res.

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We have investigated the low‐temperature history of pre‐Neogene basement areas adjacent to the western extension of the North Anatolian Fault zone (NAFZ) by apatite fission track thermochronology of 33 samples taken from Marmara island, Kapidag peninsula (both in the Sea of Marmara), Samothrake island, and Chalkidike peninsula (both in the North Aegean region). Together with already published apatite fission track data from 30 other sampling localities of the region, these data (63 in total) have been evaluated mainly with regard to the transitional period from the Mesohellenic orogeny (Eocene‐Oligocene) to the plate‐tectonical individualization of the Aegean‐Antolian microplate, to gain a better understanding of the tectonical chronology that has led to modern east Mediterranean plate tectonics. Apatite fission track investigations of the area under discussion reveal two major events of cooling and exhumation of pre‐Neogene rocks. A first frequency maximum of cooling ages between 35 and 25 Ma (late Eocene to early Oligocene) is due to postorogenic regional erosion after the climax of the Mesohellenic orogeny, which was caused by continental collision of the Pelagonian platform and the Rila‐Rhodope zone after the final closure of the Axios‐Vardar Ocean. A second frequency maximum of cooling ages between 17 and 11.5 Ma (early to middle Miocene) depicts more localized uplift and exhumation in consequence of transpressive and/or transtensive movements along early structural discontinuities that gave rise to the later fault systems in the western extension of the NAFZ. The earliest fault structures of this system have developed shortly after the orogenic collapse and crustal extension of the Rila‐Rhodope area but quasi simultaneously with the onset of subduction along the modern Hellenic trench. The regional distribution of fission track ages of the Miocene age group (17 to 11.5 Ma), and corresponding thermochronological calculations based on frequency distributions of confined track lengths suggest that an early fault propagation has occurred from east to west during the Miocene. The onset of subduction along the Hellenic trench and subsequent gravitational retreat of the subducting oceanic slab are considered as a major cause for transtension of the Aegean crust, especially with regard to the development of north Aegean pull‐apart basins. Such early fault structures have facilitated the westward propagation of a continuous NAFZ that took place during the Pliocene from the easternmost Marmara region to the Gallipoli peninsula and to the North Aegean trough.

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Section: Geological Setting Of the North Aegean And The Marmara Regionmentioning

confidence: 99%

Fission‐track thermochronology, vertical kinematics, and tectonic development along the western extension of the North Anatolian Fault zone

Hejl¹,

Bernroider²,

Parlak³

et al. 2010

J. Geophys. Res.

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“…The geochemical characteristics of these rocks are defined by high-K calc-alkaline magmatism series which are abundant of basalt, andesite and trachyandesite, latite, dacite, rhylolite and they involve rocks with their pyroclastic associations [3,5,10]. Following to this magmatic activity the subsequent stages of magmatic rocks are associated with extensional tectonic regime, because the large scale plate deformation is dominated by extension at the Middle-Late Miocene [6,11,12]. The geochemical characteristics of these rocks are defined by alkaline magmatism series which are abundant of basalt [3,5,13,14].…”

Section: Introductionmentioning

confidence: 99%

“…Following to this magmatic activity the subsequent stages of magmatic rocks are associated with extensional tectonic regime, because the large scale plate deformation is dominated by extension at the Middle-Late Miocene [6,11,12]. The geochemical characteristics of these rocks are defined by alkaline magmatism series which are abundant of basalt [3,5,13,14]. It has been suggested the source of the mantle has significantly changed at this stage as the asthenospheric mantle has reached into shallow crustal levels [13,15,16].…”

Section: Introductionmentioning

confidence: 99%

The Geological, Petrographical and Engineering Properties of Rhyolitic Tuffs (Çan Stone) in Çan-Etili Area (Çanakkale), NW Turkey: Their Usage as Building and Covering Stones

Türkdönmez¹,

Bozcu²

2012

OJG

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In this study, the geological, petrographical properties of rhyolitic tuffs exposed around Çan-Etili in the Biga Peninsula (NW Turkey) which are pyroclastic products of Late Oligocene-Early Miocene aged Çan Volcanism were investigated, also physical and mechanical characteristics of tuffs introduced and tried to determine the impact on engineering properties of petrographical features. In the region, rhyolitic tuffs called locally "Çan stone" have been used as covering and building stones for many years. These tuffs generally have light yellowish, beige, brown colored and different patterns with light yellowish, cream, reddish and brown colors caused by iron oxidation of hydrothermal alteration. They are preferred as coatings and decorative stone with these patterns. Çan stone which consisted of rhyolitic composition, lithic and locally crystalline tuffs has compact structure. The mineral assemblage of tuffs is mainly composed of quartz, plagioclase, rarely biotite, amphibole (hornblende) phenocrystals and opaque mineral with particles of volcanic glass and lithic fragments. Not only petrographical and geochemical analyses were carried out but also standard rock mechanic tests (unit weight, specific gravity, porosity, water absorption and uniaxial compressive strength) on rhyolitic tuffs samples collected from four different quarries (Hoppa Hill, Halilaga, Uzunalan, Dereoba). Simple regression analysis of test results obtained from four different regions and correlations were found good correlation between engineering properties and the petrographical and chemical properties of rhyolitic tuffs.

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“…Finally, for representing collision zones, geochemical data were compiled for Cretaceous to Paleogene rocks from the following areas and sources: 1) Central Anatolia, Turkey (Ilbeyli et al, 2004); 2) Western Anatolia, Turkey (Koprubasi and Aldanmaz, 2004); 3) Ulubey, Turkey (Temizel et al, 2012); 4) Western Pontides, Turkey (Karsli et al, 2011); 5) Lesser Caucasus, Azerbaijan (Dilek et al, 2010); and 6) Himalayas and Tibet (Harris et al, 1988;Mo et al, 2007Mo et al, , 2008Zheng et al, 2012).…”

Section: Other Arcs Continental Rifts or Extensional Areas And Collmentioning

confidence: 99%

Present state of knowledge and new geochemical constraints on the central part of the Mexican Volcanic Belt and comparison with the Central American Volcanic Arc in terms of near and far trench magmas

Verma¹

2015

Turkish J Earth Sci

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A brief critical review is presented of the geological, geophysical, geochemical, and plate tectonic evidence for the origin and evolution of the central part of the Mexican Volcanic Belt (C-MVB). Databases were constructed for the C-MVB from new and published data as well as for the Central American Volcanic Arc (CAVA), other continental and island arcs, continental rifts or extensional areas, and collision zones. Conventional procedures as well as statistical techniques of multidimensional tectonic discrimination diagrams and significance tests were used to interpret the data. A subdivision of the databases for the C-MVB and CAVA into near the trench or front-arc and far from the trench or backarc magmas helped to demonstrate the lack of slab input for the C-MVB and the presence of a classic arc-trench system for the CAVA. The use of software IgRoCS, DODESSYS, UDASYS, TecD, and TecDIA provided the following conclusions: 1) basic magmas in the C-MVB that originated in the mantle without the involvement of the subducted slab represent a continental rift setting; 2) C-MVB acid and intermediate magmas that originated, respectively, from the crust and mixed mantle-crustal sources do not show a clear influence of the present subducted slab and represent the tectonic setting of the older crustal and mixed mantle-crustal source rocks; and 3) all rocks in the CAVA were derived from the involvement of the subducted slab and represent a classical continental arc system related to the subduction of the Cocos plate beneath the Caribbean plate, whereas CAVA back-arc rocks originated mainly in the mantle, probably with much less involvement of the subducted slab. Reinterpretation of the Sr, Nd, Pb, and Hf isotopic data supports these inferences. I propose a new tectono-petrogenetic model based on the continuation of the extensional tectonics related to the triple rift system in the western part of the MVB.

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Geochemical Constraints on the Petrogenesis of Cenozoic I-Type Granitoids in Northwest Anatolia, Turkey: Evidence for Magma Generation by Lithospheric Delamination in a Post-Collisional Setting

Cited by 82 publications

References 41 publications

Fission‐track thermochronology, vertical kinematics, and tectonic development along the western extension of the North Anatolian Fault zone

Fission‐track thermochronology, vertical kinematics, and tectonic development along the western extension of the North Anatolian Fault zone

The Geological, Petrographical and Engineering Properties of Rhyolitic Tuffs (Çan Stone) in Çan-Etili Area (Çanakkale), NW Turkey: Their Usage as Building and Covering Stones

Present state of knowledge and new geochemical constraints on the central part of the Mexican Volcanic Belt and comparison with the Central American Volcanic Arc in terms of near and far trench magmas

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Geochemical Constraints on the Petrogenesis of Cenozoic I-Type Granitoids in Northwest Anatolia, Turkey: Evidence for Magma Generation by Lithospheric Delamination in a Post-Collisional Setting

Cited by 82 publications

References 41 publications

Fission‐track thermochronology, vertical kinematics, and tectonic development along the western extension of the North Anatolian Fault zone

Fission‐track thermochronology, vertical kinematics, and tectonic development along the western extension of the North Anatolian Fault zone

The Geological, Petrographical and Engineering Properties of Rhyolitic Tuffs (&#199;an Stone) in &#199;an-Etili Area (&#199;anakkale), NW Turkey: Their Usage as Building and Covering Stones

Present state of knowledge and new geochemical constraints on the central part of the Mexican Volcanic Belt and comparison with the Central American Volcanic Arc in terms of near and far trench magmas

Contact Info

Product

Resources

About

The Geological, Petrographical and Engineering Properties of Rhyolitic Tuffs (Çan Stone) in Çan-Etili Area (Çanakkale), NW Turkey: Their Usage as Building and Covering Stones