THE GEOLOGICAL EVOLUTION OF SORGUN (YOZGAT)-YILDIZELİ (SİVAS) FORELAND BASIN, PETROGRAPHIC, GEOCHEMICAL ASPECTS AND GEOCHRONOLOGY OF VOLCANISM AFFECTING THE BASIN

Yıl 2017, Cilt: 155 Sayı: 155, 1 - 31, 03.12.2017

Ali Ekber Akçay Metin Beyazpirinç

https://doi.org/10.19111/bulletinofmre.336625

Cited By: 4

Öz

Sorgun-Yıldızeli basin is an east-west trending asymmetric marginal foreland (peripheral foreland basin) formed as a result of the consumption of oceanic crust of the northern branch of Neotethys due to the collision of Sakarya continent in the north and Kırşehir Block in the south. It provides much information about the geodynamic evolution of the region. The basement of the study area consists of Late Palaeozoic-Mesozoic Akdağmadeni Massif. Akdağmadeni Massif was intruded by CenomanianMaastrichtian granitoids and is overlain tectonically by Late Cretaceous Artova ophiolitic melange within the İzmir-Ankara-Erzincan suture zone and by Cenomanian-Maastrichtian Darmik Formation. The volcano-sedimentary sequence deposited in Sorgun-Yıldızeli foreland basin developed on the relicts of the İzmir-Ankara-Erzincan Suture Zone along the northern margin of Kırşehir Block and was named the Boğazköy Formation. The pelitic, clastic and coarse clastic levels of Upper Palaeocene-Middle Eocene Boğazköy Formation including İzmir-Ankara-Erzincan Suture Zone slices and olistostromes are differentiated as the Dolak member. Toward the inner part of the basin, a turbiditic sequence of conglomerate, sandstone, claystone including rare limestone beds was deposited, consisting of conglomerate, sandstone, claystone, rarely limestone and alternations of three different volcanic rocks (acidic, basic and intermediate) related to subduction and/or collision. Calc-alkaline lava and pyroclastics of basaltic and basalt-andesite composition were differentiated as the Pazarcık volcanic member, with lava and pyroclastics of dacitic and rhyolitic composition called the Sarayözü volcanic member and calcalkaline lava and pyroclastics of andesitic, trachyandesitic and dacitic composition called Kiremitlik volcanic member in Sorgun-Yıldızeli basin. According to the 40Ar/39Ar geochronologic method, the ages of 57.2±2.0 Ma and 56.7±1.8 Ma were obtained for Pazarcık volcanics, 48.8±1.5 Ma for Sarayözü volcanics and 45.1±1.3 Ma and 47.3±0.6 Ma for Kiremitlik volcanics. The reefal limestones which are not thick and occur in higher parts of the Boğazköy Formation were called the Limestone member. The uppermost section of the sequence which consists of generally clastic and coarse clastics is named the Konacı member. When the sedimentation and volcanism continued in the basin, gabbroic intrusions occurred as sills and laccoliths cutting the Boğazköy Formation. These gabbroic rocks were named the Yaycılar Gabbro. The age of 51.0 ± 0.7 Ma was found for the Yaycılar Gabbro with the 40Ar/39Ar geochronologic method. As a result of slab breakoff, the relicts of the consumed oceanic crust and the released massif were uplifted rapidly and the units of Middle-Late Eocene Tokuş Formation were deposited transgressively on the Boğazköy Formation and on outcropping basement rocks in the basin which was controlled by an extensional tectonic regime. Upper Miocene-Pliocene (İncesu Formation), Pliocene and Quaternary terrestrial sediments were deposited unconformably on all older units.

Anahtar Kelimeler

Sorgun-Yıldızeli foreland basin, Slab breakoff, Subduction and collisionrelated volcanism, Geochemistry, 40Ar/39Ar Geochronologic dating

THE GEOLOGICAL EVOLUTION OF SORGUN (YOZGAT)-YILDIZELİ (SİVAS) FORELAND BASIN, PETROGRAPHIC, GEOCHEMICAL ASPECTS AND GEOCHRONOLOGY OF VOLCANISM AFFECTING THE BASIN

Öz

Sorgun-Yıldızeli basin is an east-west trending asymmetric marginal foreland (peripheral foreland
basin) formed as a result of the consumption of oceanic crust of the northern branch of Neotethys due
to the collision of Sakarya continent in the north and Kırşehir Block in the south. It provides much
information about the geodynamic evolution of the region. The basement of the study area consists of
Late Palaeozoic-Mesozoic Akdağmadeni Massif. Akdağmadeni Massif was intruded by CenomanianMaastrichtian
granitoids and is overlain tectonically by Late Cretaceous Artova ophiolitic melange
within the İzmir-Ankara-Erzincan suture zone and by Cenomanian-Maastrichtian Darmik Formation.
The volcano-sedimentary sequence deposited in Sorgun-Yıldızeli foreland basin developed on the relicts
of the İzmir-Ankara-Erzincan Suture Zone along the northern margin of Kırşehir Block and was named
the Boğazköy Formation. The pelitic, clastic and coarse clastic levels of Upper Palaeocene-Middle
Eocene Boğazköy Formation including İzmir-Ankara-Erzincan Suture Zone slices and olistostromes
are differentiated as the Dolak member. Toward the inner part of the basin, a turbiditic sequence of
conglomerate, sandstone, claystone including rare limestone beds was deposited, consisting of
conglomerate, sandstone, claystone, rarely limestone and alternations of three different volcanic rocks
(acidic, basic and intermediate) related to subduction and/or collision. Calc-alkaline lava and pyroclastics
of basaltic and basalt-andesite composition were differentiated as the Pazarcık volcanic member, with
lava and pyroclastics of dacitic and rhyolitic composition called the Sarayözü volcanic member and calcalkaline
lava and pyroclastics of andesitic, trachyandesitic and dacitic composition called Kiremitlik
volcanic member in Sorgun-Yıldızeli basin. According to the 40Ar/39Ar geochronologic method, the
ages of 57.2±2.0 Ma and 56.7±1.8 Ma were obtained for Pazarcık volcanics, 48.8±1.5 Ma for Sarayözü
volcanics and 45.1±1.3 Ma and 47.3±0.6 Ma for Kiremitlik volcanics. The reefal limestones which are
not thick and occur in higher parts of the Boğazköy Formation were called the Limestone member. The
uppermost section of the sequence which consists of generally clastic and coarse clastics is named the
Konacı member. When the sedimentation and volcanism continued in the basin, gabbroic intrusions
occurred as sills and laccoliths cutting the Boğazköy Formation. These gabbroic rocks were named
the Yaycılar Gabbro. The age of 51.0 ± 0.7 Ma was found for the Yaycılar Gabbro with the 40Ar/39Ar
geochronologic method. As a result of slab breakoff, the relicts of the consumed oceanic crust and
the released massif were uplifted rapidly and the units of Middle-Late Eocene Tokuş Formation were
deposited transgressively on the Boğazköy Formation and on outcropping basement rocks in the basin
which was controlled by an extensional tectonic regime. Upper Miocene-Pliocene (İncesu Formation),
Pliocene and Quaternary terrestrial sediments were deposited unconformably on all older units.

Anahtar Kelimeler

Sorgun-Yıldızeli foreland basin, Slab breakoff, Subduction and collision-related volcanism, Geochemistry

Kaynakça

• Agrawal, S., Guevara, M., Verma S. 2008. Tectonic discrimination of basic and ultrabasic volcanic rocks through log-transformed ratios of immobile trace elements. International Geology Review 50, 1057–1079.
• Akçay, A. E., Dönmez, M., Kara, H., Yergök, A. F., Esentürk, K. 2008. 1/100.000 Ölçekli Türkiye jeoloji haritaları, Kırşehir İ-34 paftası, No: 81. Maden Tetkik ve Arama Genel Müdürlügü, Ankara.
• Aldanmaz, E., Pearce, J., Thirhvall, M.F., Mitchell, J. 2000. Petrogenetic evolution of late Cenozoic, post-collision volcanism in western Anatolia, Turkey. Journal of Volcanology and Geothermal Research 102, 67-95.
• Alpaslan, M. 2000. Pazarcık volkanitinin (Yıldızeli-Sivas) mineralojik-petrografik ve jeokimyasal özellikleri. Türkiye Jeoloji Bülteni 43/2, 49-60.
• Alpaslan, M., Terzioğlu, N. 1998. Pontidlerde çarpışma sonrası volkanizmaya bir örnek: Sürmeli Volkaniti (Taşova-Amasya), CÜ Mühendislik Fakültesi Dergisi, Seri A: Yerbilimleri, 15, 1, 13-20.
• Altunkaynak, Ş. 2007. Collision-driven slab breakoff magmatism in northwestern Anatolia, Turkey. Journal of Geology 115, 63-82.
• Altunkaynak, Ş., Dilek, Y. 2006. Timing and nature of postcollisional volcanism in western Anatolia and geodynamic implications. In: Postcollisional Tectonics and Magmatism in the Mediterranean Region and Asia, Y. Dilek and S. Pavlides (eds.), Geological Society of America, Special Paper, 409, 321-351.
• Altunkaynak, Ş., Dilek, Y. 2013. Eocene mafic volcanism in northern Anatolia: its causes and mantle sources in the absence of active subduction. International Geology Review 55 (13), 1641-1659.
• Arslan, M., Aliyazıcıoğlu, İ. 2001. “Geochemical and petrological characteristics of the Kale(Gümüşhane) volcanic rocks: Implications for the Eocene evolution of Eastern Pontide arc volcanism, Northeast Turkey, International Geology Review 43, 595-610.
• Atakay Gündoğdu, E. 2009. Çorum Güneybatısındaki Volkanik Kayaçların Jeolojik Ve Petrolojik Özellikleri ve Alaca Höyük Kazısında Jeoarkeolojik Çalısmalar, Doktora Tezi, Ankara Üniversitesi, Fen Bilimleri Enstitüsü, 194.s. (yayımlanmamış).
• Bailey, E.B. ve Mc Callien, W.J. 1950. Ankara melanjı ve Anadolu şariyajı. Maden Tetkik ve Arama Dergisi 40, 12-16.
• Beyazpirinç, M., Akçay, A.E., Tarhan, N., Sönmez, M.K., Havzoğlu, T., Bilgiç, T., Bademler, F., Ünal, M. 2014. Akdağmadeni masifinin jeolojisi ve jeodinamik evrimi projesi 2011-2012 yıllarına ait ara rapor. Maden Tetkik ve Arama Genel Müdürlüğü Rapor No: 11763, Ankara (yayımlanmamış).
• Boynton, W. V. 1984. Cosmochemistry of the rare earth elements: meteorite studies. In: Henderson P (eds) Rare Earth Element Geochemistry. Elsevier, Amsterdam, 63-114.
• Büyükönal, G. 1985. Yozgat Yöresi volkanitlerinin asal ve iz elementlerinin dağılımı. Maden Tetkik ve Arama Dergisi 105-106; 97-111.
• Dalkılıç, H., Dönmez, M., Akçay, A. E. 2008. 1/100 000 Ölçekli açınsama nitelikli Türkiye Jeoloji Haritaları Serisi, Yozgat-İ35 Paftası, No: 82. Maden Tetkik ve Arama Genel Müdürlüğü, Ankara.
• Debon, F. and Le Fort, P. 1983. A chemical–mineralogical classification of common plutonic rocks and associations. Transactions of the Royal Society of Edinburgh, Earth Sciences 73, 135–149.
• Dilek, Y., Thy, P. 2006. Age and petrogenesis of plagiogranite intrusions in the Ankara melange, Central Turkey. Island 15, 44-57.
• Dönmez, M., Bilgin, Z.R., Akçay, A.E., Kara, H., Yergök, A.F., Esentürk, K. 2005. 1/100 000 Ölçekli açınsama nitelikli Türkiye Jeoloji Haritaları Serisi, Kırşehir İ31 paftası, No: 46. Maden Tetkik ve Arama Genel Müdürlüğü, Ankara.
• Dönmez, M., Akçay, A.E., Genç, Ş.C., Acar Ş. 2005. Biga yarımadasında Orta-Üst Eosen volkanizması ve denizel ignimbiritler, Maden Tetkik ve Arama Dergisi 131, 49-61.
• Edwards, A., Menzies, M., Thirlwall, M. 1991. Evidence from Muriah, Indonesia, for the interplay of supra‐subduction zone and intraplate processes in the genesis of potassic alkaline magmas. J.Petrol., vol. 32(3), p.555‐592.
• Egeran, E.N., Lahn, E. 1951. Kuzey ve Orta Anadolu’nun tektonik durumu hakkında not. Maden Tetkik ve Arama Dergisi 41, 23-27.
• Ercan, T., Ergül, E., Akçören, F., Çetin, A., Granit, S., Asutay, J. 1990. Balıkesir-Bandırma arasının jeolojisi, Tersiyer volkanizmasının petrolojisi. Maden Tetkik ve Arama Dergisi 110, 113-30.
• Ercan, T., Satır, M., Steinitz, G., Dora, A., Sarıfakioğlu, E., Adis, C., Walter, H.-J., Yıldırım, T. 1995. Biga yarimadasi ile Gökceada, Bozcaada ve Tavsan adalarindaki (KB Anadolu) Tersiyer volkanizmasinin ozellikleri. Maden Tetkik ve Arama Dergisi 117, 55-86. Ercan, T., Türkecan, A., Guillou, H., Satır, M., Sevin, D., Şaroğlu, F. 1998. Marmara denizi çevresindeki Tersiyer volkanizmasının özellikleri. Maden Tetkik ve Arama Dergisi 120, 199–221.
• Erkan, Y., Ataman, G. 1981. Orta Anadolu masifi (Kırşehir yöresi) metamorfizma yaşı üzerine K-Ar yöntemi ile bir inceleme. Yerbilimleri 8, 27-30.
• Erler, A., Bayhan, H. 1995, Orta Anadolu granitoyitlerinin genel değerlendirilmesi ve sorunları. Yerbilimleri 17, 49-67.
• Fitton, J.G., James, D., Kempton, P.D., Ormerod, D.S., Leeman, W.P. 1988. The role of lithospheric mantle in the generation of late Cenozoic basic magmas in the Western United States, Journal of Petrology, Special Issue, 331-349.
• Genç, Ş.C. 1998. Evolution of the Bayramiç magmatic complex. Journal of Volcanology and Geothermal Research 85 (1-4), 233-249.
• Genç, Ş.C., Yılmaz, Y. 1997. An example of post-collisional magmatism in northwestern Anatolia: the Kızderbent volcanics (Armutlu peninsula, Turkey). Turkish Journal of Earth Sciences 6, 33–42.
• Genç, Ş.C., Dönmez, M., Akçay, A., Altunkaynak, Ş. 2004. The Middle Eocene to Late Miocene magmatic evolution of the Biga peninsula, NW Turkey. 32nd International Geological Congress, Florence, Italy, Abstracts Part 2, 1298.
• Genç, Ş.C., İşseven, T., Keskin, M., Tüysüz, O. 2005. Armutlu yarımadası (KB Anadolu) Eosen magmatik kayalarının petrolojik evrimi ve paleomanyetizma özelliklerinin araştırılması. TÜBİTAK Projesi (Proje No: 102Y032).
• Genç, Ş.C., Altunkaynak, Ş. 2007, Eybek graniti (Biga yarımadası, KB Anadolu) üzerine: yeni jeokimya verileri ve yeni bir değerlendirme. Hacettepe Universitesi Yerbilimleri Uygulama ve Araştırma Merkezi Dergisi 28 (2), 75-98.
• Gill, J.B. 1981, Orogenic andesites and Plate tectonics, Springer - Verlag, New York, 138 p.
• Göncüoğlu, M.C. 1977. Geologie des westlichen Niğde Massivs. Bonn Üniv. Doktora Tezi, 181 s. (yayımlanmamış).
• Göncüoğlu, M.C.,Toprak, V., Kuşçu, I., Erler, A., Olgun, E. 1991. Orta Anadolu Masifi’nin batı bölümünün jeolojisi, Bölüm 1: Güney Kesim. TPAO Rapor No: 2909, 140 s. (yayımlanmamış).
• Göncüoğlu, M.C., Erler, A., Toprak, V., Yalınız, K., Olgun, E., Rojay, B. 1992. Orta Anadolu Masifi’nin batı bölümünün jeolojisi, Bölüm 2: Orta Kesim. TPAO Rapor No: 3155, 76 s. (yayımlanmamış).
• Görür, N., Akkök, R., Sakınç, M., Ünalan, G., Yaltırak, C. 1997, Türkiye’nin Tersiyer Havzaları ve Kömür Potansiyeli. Türkiye Kömür Arama Hedeflerinin Belirlenmesi ve Arama Yöntemlerinin Saptanması, Yurt Madenciliğini Geliştirme Vakfı Yayınları, s. 8-37.
• Gülmez, F., Genç, S.C., Keskin, M., Tüysüz, O. 2013. A postcollision slab-breakoff model for the origin of the Middle Eocene magmatic rocks of the Armutlu-Almacık belt, NW Tur¬key and its regional implications, in Robertson, A.H.F., Parlak, O., and Ünlügenç, U.C., eds., Geological development of Anatolia and the Easternmost Mediterranean region: Geological Society, London, Special Publications, 372.
• Kara, H. 1997. 1/100.000 ölçekli açınsama nitelikli Türkiye jeoloji haritaları serisi, Yozgat G 19 paftası, No. 54. Maden Tetkik ve Arama Genel Müdürlüğü, Ankara.
• Keskin, M., Genç, S.C., Tüysüz, O. 2004. Tectonic setting and petrology of collision-related Eocene volcanism around the Çankırı Basin, North Central Turkey. 32nd IGC, Florence 2004 Abstracts Part 2, 1299.
• Keskin, M., Genç, S.C., Tüysüz, O. 2008. Petrology and geochemistry of postcollisional Middle Eocene volcanic units in North-Central Turkey: Evidence for magma generation by slab breakoff following the closure of the Northern Neotethys Ocean. Lithos 104(1-4), 267-305.
• Ketin, İ. 1955. Yozgat bölgesinin jeolojisi ve Orta Anadolu Masifinin tektonik konumu. Türkiye Jeoloji Kurumu Bülteni 6, 1-40.
• Ketin, İ. 1963. 1:500 000 ölçekli Türkiye Jeoloji Haritası (Kayseri). Maden Tetkik ve Arama Genel Müdürlüğü yayınları, 82 s. Ankara.
• Ketin, İ. 1966. Anadolunun tektonik birlikleri, Maden Tetkik ve Arama Dergisi 66, 20-34
• Koçbulut, F., Yılmaz Şahin, S., Tatar, O. 2001. Akdağmadeni (Yozgat)- Yıldızeli (Sivas) arasındaki Kaletepe volkanitinin mineralojik-petrografik ve jeokimyasal incelenmesi. İÜ Yerbilimleri Dergisi, Cilt 14, Sayı 1-2, 77-91.
• Köprübaşı, N., Aldanmaz, E. 2004. Geochemical constraints on the petrogenesis of Cenozoic I-Type granitoids in Northwest Anatolia, Turkey: Evidence for magma generation by litospheric delamination in a post-collisional setting. International Geology Review 46, 705-729.
• Le Bas, M.J., Le Maitre, R.W., Streckeisen, A., Zanettin, B. 1986. A chemical classification of volcanic rocks based on the total alkali-silica diagram. Journal of Petrology 27, 745–750.
• Morrison, G.W. 1980. Characteristics and Tectonic Setting of the Shoshonite Rock Association. Lithos 13, 97-108.
• Okay, A.İ., Tüysüz, O. 1999. Tethyan sutures of northern Turkey. In "The Mediterranean Basins: Tertiary extension within the Alpine orogen" (eds. B. Durand, L. Jolivet, F. Horváth and M. Séranne), Geological Society, London, Special Publication 156, 475-515.
• Okay, A.İ., Satır, M. 2006. Geochronology of Eocene plutonism and metamorphism in northeast Turkey: evidence for a possible magmatic arc. Geodinamica Acta 19 (5), 251–266.
• Özcan, A., Erkan, A., Keskin, E., Oral, A., Sümengen, M., Tekeli, O. 1980. Kuzey Anadolu fayı-Kırşehir masifi arasının temel jeolojisi. Maden Tetkik ve Arama Genel Müdürlüğü Rapor No:1604. Ankara (yayımlanmamış).
• Pearce, J.A. 1983. Role of the sub-continental lithosphere in magma genesis at destructive plate margins. In: Hawkeswoeth, C.J. and Norry, M.J., (Eds), Continental basalts and Mantle Xenolithes. Nantwich: Shiva, 230-249.
• Pearce, J. A. 1996. A user's guide to basalt discrimination diagrams. In: Wyman, D. A. (ed.) Trace Element Geochemistry of Volcanic Rocks: Applications for Massive Sulphide Exploration. Geological Association of Canada, Short Course Notes 12, 79–113.
• Peccerillo, A., Taylor, S.R. 1976. Geochemistry of eocene calc-alkaline volcanic rocks from the Kastamonu area, northern Turkey. Contributions to Mineralogy and Petrology 58, 63-81.
• Sarıfakıoğlu, E., Sevin, M., Esirtgen, E., Duran, S., Parlak, O., Bilgiç, T., Dönmez, M., Dilek, Y. 2011. Çankırı-Çorum havzasını çevreleyen ofiyolitik kayaçların jeolojisi: Petrojenezi, tektoniği ve cevher içerikleri. Maden Tetkik ve Arama Genel Müdürlüğü Rapor No: 11449, Ankara (yayımlanmamış).
• Şahin, M.B. 1999. Akdağmadeni masifi metamorfitleri, Evciler-Çatköy kesiminin mineralojik ve petrolojik özelliklerinin incelenmesi. Doktora Tezi, HÜ Fen Bilimleri Enstitüsü, 105 s. Ankara (yayımlanmamış).
• Şengör, A.M.C., Yılmaz, Y. 1981. Tethyan evolution of Turkey. A Plate Tectonic Approach. Tectonophysics 75, 181-241.
• Terzioğlu, N. 1984. Ordu güneyindeki Eosen yaşlı Bayırköy volkanitlerinin jeokimyası ve petrolojisi, C.Ü. Mühendislik Fak. Dergisi, Seri-A Yerbilimleri, 1,43-60
• Thieblemont, D., Tegyey, Y. 1994. Geochemical discrimination of differentiated magmatic rocks attesting for the variable origin and tectonic setting of calc-alkaline magmas. Comptes Rendus De L Academie Des Sciences Serie II 319 (1), 87–94.
• Tiryaki, C., Ekici, T. 2012. Çarpışma sonrası kalk-alkalin Yozgat Volkaniklerinin Petrolojisi Türkiye Jeoloji Bülteni 55, 1
• Tokel, S. 1972. Stratigraphical and Volcanic History of the Gümüşhane Region (NE Turkey), Doktora Tezi, Univ. Col. of London, UK.
• Türkiye Stratigrafi Komitesi Bülteni, 1987, Sayı: 1, 15 s. Ankara.
• Tüysüz, O., Dellaloğlu, A.A. 1992. Çankırı havzasının tektonik birlikleri ve jeolojik evrimi.Türkiye 9. Petrol Kongresi Kitabı, 333-349.
• Tüysüz, O., Dellaloğlu, A.A., Terzioğlu, N. 1995. A magmatic belt within the Neo-Tethyan suture zone and its role in the tectonic evolution of Northern Turkey. Tectonophysics 243, 173-191.
• Ustaömer P.A., Ustaömer T., Collins A.S., Reischpeitsch J. 2009. Lutetian Arc-Type Magmatism Along The Southern Eurasian Margin: New U-Pb La-Icpms And Whole-Rock Geochemical Data From Marmara Island, NW Turkey, Mıneralogy And Petrology 96, 177-196.
• Vache, R. 1963. Akdağmadeni kontakt yatakları ve bunların Orta Anadolu Kristaline karşı olan jeolojik çerçevesi. Maden Tetkik ve Arama Dergisi 19, 22-36.
• Wilson, M. 1989. Igneous Petrogenesis, Unwin Hyman Ltd., London, UK, 466p.
• Winchester, J.A., Floyd, P.A. 1977. Geochemical classification of different magma series and their differentiation products using immobile elements. Chemical Geology 20, 325-343.
• Wood, D.A. 1980. The application of a Th-Hf-Ta diagram to problems of tectonomagmatic classification and to establishing the nature of crustal contamination of basaltic lavas on the British Tertiary Volcanic Province: Earth and Planetary Science Letters, 50, 11-30.
• Yılmaz, A. 1981. Tokat ile Sivas Arasındaki bölgede ofiyolitli karışığın iç yapısı ve yerleşme yaşı. Türkiye Jeoloji Kurumu Bülteni 24, 31-38
• Yılmaz, A. 1982. Dumanlı dağı (Tokat) ile Çeltek dağı (Sivas)dolaylarının temel jeoloji özellikleri ve ofiyolitli karışığın konumu. Maden Tetkik ve Arama Genel Müdürlüğü Rapor No:7230, Ankara (yayımlanmamış).
• Yılmaz, A., Uysal, Ş., Yusufoğlu, H., Ağan, A., inal, A., Aydın, N., Bedi, Y., Havzoğlu, T., Göç, D., İnal, E., Erkan, E.N. 1994. Akdağmasifi (Sivas) dolayının jeolojik incelemesi. Maden Tetkik ve Arama Genel Müdürlüğü Rapor No:9721, Ankara (yayımlanmamış).
• YıImaz, A., UysaI, S, Bedi, Y., YusufoğIu, H., HavzoğIu, T., Ağan, A., Göç, D., Aydın, N. 1995. Akdağ masifi ve dolayının jeolojisi. Maden Tetkik ve Arama Dergisi 117, 125-138.
• YıImaz, A., UysaI, S, Bedi, Y., Atabey, E.,YusufoğIu, H., HavzoğIu, T., Ağan, A., Aydın, N. 1997. 1/100.000 Ölçekli Türkiye jeoloji haritaları, Sivas-F22 paftası, No: 46. Maden Tetkik ve Arama Genel Müdürlügü, Ankara.
• Yılmaz, Y., Gürpınar, O., Yiğitbaş, E.,Yıldırım, M., Genç, Ş.C., Gürer, Ö.F., Elmas, A., Bozcu, M.,Çalışkan, B.A. 1993. Tokat masifi ve yakın çevresinin jeolojisi. Türkiye Petrolleri Anonim Ortaklığı Rapor No: 3390.
• Yılmaz, Y., Tüysüz, O., Yiğitbaş, E.,Genç, Ş.C., Şengör, A.M.C. 1997. Geology and tectonic evolution of the Pontides. In: Robinson, A.G. (Ed.), Regional and Petroleum Geology of the Black Sea and Surrounding Region. Memoir, vol. 68. American Association of Petroleum Geologists, pp. 183–226.
• Yılmaz, Y., Tüysüz, O. 1984. Kastamonu-Boyabat-Vezir-köprü-Tosya arasındaki bölgenin jeolojisi (Ilgaz-Kargı masiflerinin etüdü). Maden Tetkik Arama Enstitüsü Rapor No: 275, 275p
• Yılmaz, Y., Genç, S.C., Karacik, Z., Altunkaynak, Ş. 2001. Two contrasting magmatic associations of NW Anatolia and their tectonic significance. Journal of Geodynamics 31, 243-271.