Türkiye Jeoloji Bülteni
Türkiye Jeoloji Bülteni

Türkiye Jeoloji Bülteni

1984 ŞUBAT Cilt 27 Sayı 1
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Intra-Plate Neotectonic Development in Southwestern Turkey and Adjacent Areas
Ali Koçyiğit
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Abstract: In Southwestern Turkey and adjacent areas, technical development is subdivided in three periods,namely Paleotectonic period, Transition period and Neotectonic period- The Transition period is characterized bya thick pile of molasse formations as in many parts of the Alpine orogenic belt. On the other hand, the Neotectonic period, which initiated locally at the end of Middle Oligocene time but regionally in Late Miocene to EarlyPliocene, is characterized by continental sedimentation, synsedimentary volcanism and the block-faulting developed under the control of tensional tectonic regime. The geologic events and the features representing the Neotectonic period in Southwestern Turkey and adjacent areas are a result of the tensional tectonic regime due to theAegean trench rather than the North Anatolian Fault- Because the region has been divided in many aseismicand seismic blocks bounded by the oblique type of normal faults.

  • North Anatolian Fault

  • synsedimentary volcanism

  • Alpine orogenic belt

  • Southwestern Turkey

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    The Origin and the Petrology of the Magmatic Roks and Tertiary Stratigraphy of the Edremit-Korucu (Balıkesir) Region.
    Tuncay Ercan Erdoğdu Günay Ahmet Türkecan
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    Abstract: Results of the stratigraphic investigations on the magmatic and sedimentary rocks cropping out between Edremit and Korucu (Balıkesir) in Western Turkey have been presented and the origin of volcanic rocks o£the region have been discussed- The oldest volcanic sequence of the area is represented by the Bağburun formationwhich is probably of Paleocene-Eocene age. Magmatic activity continues with the Eybek and Kozak plutons whichare covered by the Hallaçlar volcanics of Upper Oligocene-Lower Miocene age and with the Dedetepe formation(Lower Miocene). This is in turn succeeded by the Ballıca formation (Middle Miocene), and Soma formation (MiddleMiocene-Lower Pliocene). The continental Neogene sequence ends with the Rahmanlar agglomerate of possible LowerPliocene age- From the point of view of regional geotectonic evolution and petrochemical properties, the Bağburunformation is derived from a subduction zone and may be assumed as an arc volcanism. The younger volcanicswhich are represented by the Hallaçlar and Dedetepe formations have been derived from the anatexis of thecontinental crust and they may be grouped as intracratonic volcanics. All these three volcanic phases show calc-alkaline characteristics.

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  • Marakis, G., ve Sideris, C., 1972, Petrology of Edessa area volcanic rocks, West Macedonia, Greece : Ann. Geol. de Pays Hellen, 24, 247-256.

  • Nebert, K., 1978, Linyit içeren Soma Neojen Bölgesi, Batı Anadolu : Maden Tetkik Arama Enst. Der-, 90, 20-69

  • Öngür, T., 1972, Dikili-Bergama Jeoterjnal araştırma sahasına ilişkin jeoloji raporu : Maden Tetkik Arama Enst. Rap. No. 5444, Ankara.

  • Özgenç, I., 1978, Cumaovası (îzmir) asit volkanitlerinde saptanan iki ekstrüzyon aşaması arasındaki göreli yaş ilişkisi : Türkiye Jeoloji Kur. Bült., 21/1, 31-34.

  • Peccerillo, A., ve Taylor-, JR., 1976, Geochemistry of Upper Cretaceous volcanic rocks from the Pontic chain, Northern Turkey : Bulletin Volcanologuque, 39/4, 557-569.

  • Rittmann, A-, 1952, Nomenclature of volcanic rocks : Bulletin volcanologique, 12, 75-102

  • Rittmann, A., 1953, Magmatic character and tectonic position of the Indonesian volcanoes : Bulletin volcanologique, 14, 45-58.

  • Streckeisen, A-, 1976, Classification of the common igneous rocks by means of their chemical composition : A provisional attempt; N. Jb. Für Miner. Monatschefte, 1-15.

  • Sunder, M-, 1979, Kırka (Eskişehir) ve çevresinin jeolojisi, petrolojisi ve Sarıkaya borat yataklarının jeokimyasal incelenmesi : Doktora tezi, Istanbul Üniv. Fen Fak., İstanbul.

  • Şengör, A.M.C., 1978, Über die angebliche primare vertikaltektonik im Aegeaisraum : N- Jb. Geol. Palaeont Mh-, 11, 698-703.

  • Şengör, A.M.C., 1980, Türkiye`nin neotektoniğinin esasları : Türkiye Jeol. Kur. Yayını., 40, s-, Ankara.

  • Şengör, A.MC-, ve Yılmaz-, Y., 1981, Tethyan evolution of Turkey; A plate tectonic approach : Tectonophysics, 75, 181-241.

  • Ternek, Z., 1949, Geological study of the region KeşanKorudağ : Doktora tezi, İstanbul Üniv. Fen Fak., 78 s

  • Tuttle, O.F., ve Bowen, N.L, 1958, Origine of granite in the lights of experimental studies in the system Nal SL>O8) SiO9 , KalSi?O8 , KOO : Geol. Soc Amer. Memoir, 74, 153 pp.

  • Yamasaki, M., 1956, Petrogenetic significance of the K9O/ Na^O ratios of volcanic rocks of Fuji and Nasu volcanic zones in Japan : Jour. Geol. Soc. Japan, 62, 504-514.

  • Yılmaz, H., 1977, Beğenler-Geçtin köylerinin kuzeybatı yöresi (Gördes) stratigrafik tektonik ve petrografik incelenmesi : Ege Üniv. Fen Fak. Derg., A, 1, 2, 143-169.

  • Yılmaz, Y., 1981, Sakarya kıtası güney kenarının tektonik evrimi : İstanbul Yerbilimleri Dergi., 1, 1-2, 33-52.

  • Yılmaz, Y., Tüysüz., O., Gözübol, A.M., ve Yiğitbaş, E-, 1981, Abant (Bolu)-Dokurcun (Sakarya) arasında kuzey Anadolu fay zonunun Kuzey ve Güneyinde kalan Tektonik birliklerin jeolojik evrimi : İstanbul Yerbilimleri Der., 2, 3-4, 239-261.

  • Investigation of Well Samples Taken from Erzurum-Pasinler, Erzincan-Çayırlı, Kars-Tuzluca and Malatya-Hacılar by X-Ray Diffraction Technique
    Osman Yilmaz Mehmet Şener
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    Abstract: This work is carried on samples taken from wildcats drilled in Eastern Anatolia. The followinganalyses have been done on these samples : whole rock paragenesis, clay mineral paragenesis and its distribution,and calcite/dolomite ratio- From these results we tried to interpret the origin of petroleum.Illite is very rare or absent in all the investigated samples, so that we could not find the relationship between illite crystallinity index and burial diagenesis.The most abundant clay minerals are smectite, chlorite and kaolinites. The minor minerals are illite, disordered illite-smectite mixed layer clay minerals and corrensite.There are smectites in all the investigated samples of Pasinler-2 and 3 wildcat wells which are drilled in theErzurum-Pasinler basin. There results show that organic maturation is not reached in these levels.Similarly, there is smectite in all the investigated samples of Neftlik-1, 2, 3 and 4 wildcat wells which aredrilled in the Erzincan-Çayırh basin. These results also show that organic maturation is not reached in these levels.The clay mineralogical composition of samples of Tuzluca-1 wildcat well which is drilled in Kars-Tuzlucabasin shows that burial diagenesis is not completed in these levelsSamples taken from Hacilar-5, 6, and 7 wildcat wells which are drilled in the Malatya-Darende basin showthat there is a thrust fault in this area. This result is also confirmed by other geological investigations. There arepossible levels of reservoir rocks in all the investigated drillholes as indicated by calcite/dolomite ratios.

  • calcite/dolomite

  • clay

  • illite

  • Erzurum

  • Erzincan

  • Akkuş, M.F., 1963, Gürün bölgesinin jeolojisi ve petrol olanakları. MTA Rap. No: 4063. Yayımlanmamış

  • Akyol, Z., 1966, Neftlik-2 kuyu bitirme raporu. MTA. Rap, No: 4387. Yayımlanmamış

  • AkyoL Z., 1968, Neftlik-3 kuyu bitirme raporu. MTA. Rap-, No : 4388. Yayımlanmamış

  • Baysal, O. ve Ataman, G., 1980, Sedimentology, mineralogy and geochemistry of a sulfate series (Sivas-Turkey). Sedimentary Gelogy, 25 (1980) 67-81.

  • Bulut, C, 1966, Çayırlı-Neftlik-1 kuyu bitirme raporu. MTA Rap. No : 4386. Yayımlanmamış

  • Demirmen, F., 1965, Çayırlı ilçesi (Erzincan civarı) genel jeolojisi ve petrol olanakları. MTA Hap. No: 4845. Yayımlanmamış

  • Dunoyer de Segonzac, 1970, The transformation of clay minerals during diagenesis and low grade metamorphism. A review. Sedimentology, 15, 281-346.

  • Eşder, T., 1968, Orta Araş depresyon bölgesinin 1/25000 ölçekli detay petrol etüdü raporu. MTA Rap- No: 4243. Yayımlanmamış

  • Kübler, B., 1980, Les premiers stades de la diagenesis organique et de la diagenese Minerale, une tentative D`equivalence. Notes. Inst. Geol. Univ. Nechatel, 25 P

  • Leighton, M-W and Pendexter, C-, 1962, Carbonate rock types. Amer. Assoc Petroleum Geol. Mem. I. p. 33-61.

  • özbudak, N., 1970 a, Hacılar-6 kuyu bitirme raporu, MTA Rap. No : 4834. Yayımlanmamış

  • özbudak, N., 1970 b, Hacılar-7 kuyu bitirme raporu, MTA Rap. Kodlanmamış.

  • Pelin, S., 1970, Darende, Hacılar-5 kuyu bitirme raporuMTA Rap. Kodlanmamış.

  • Pelin, S-, 1970, Pasinler-2 kuyu bitirme raporu. MTA Rap. No: 4532. Yayımlanmamış

  • Pelin, S., Özsayar, T., Gedik, İ., Tokel, S-, 1980, Pasinler (Erzurum) havzasının petrol olanakları yönünder jeolojik incelemesi. MTA Rap. Yayımlanmamış

  • Pelin, S-, 1981, Pasinler (Erzurum) havzasında ana kayözelliklerinin ve petrol oluşumunun açıklanmasıK.T-Ü. Yerbilimleri dergisi, Jeoloji, c. 1? s. , 127-143.

  • Şerı&lp, M-, 1969, Tuzluca-1 kuyu bitirme raporu. MTA Rap. No : 4456. Yayımlanmamış

  • Teichmuller, M. and Teichmuller, R., 1979, Diagenesis of coal- In diagenesis in sediments and sedimentary rocks. Edited by Larsen, G. and Chilingar, G-V-, 1979 Elsevier Developments in Sedimentology.

  • Tennant, CB. and Berger, R.W-, 1957, X-ray determination of the dolomite-calcite ratio of a carbonate rock. Am. Min-, 42, p. 23-29-

  • Üngör, A., 1970, Pasinler-3 kuyu bitirme raporu. MTA Rap. No : 4823- Yayımlanmamış

  • Weber-P, et Larque-, 1975, Technique de preparation des mineraux argileus en vue de l`analyse par diffraction des rayons. X.CN-R-S.

  • On the Occurence of Scandonea De Castro (1971) in Paleocene
    İbrahim Engin Meriç
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    Abstract: The age-span of the genus Scandonea which was originally found in Italy by DE CASTRO in 1971as an individual of Miliolidae, is Turonian-Maastrlehtian. It is known,, from the publications and unpublished researches that various species of this genus are found in the Upper Cretaceous sediments exposed in various parts ofTaurids (Sultan dağları, Bey dağları, Geyik dağı, Korudağ) and in Western Anatolia {Bornova-îzmir).In Central Anatolia (Haymana-Ankara) however, the mentioned organism is found in various different stratigraphic levels of Paleocene aged Çaldağ Limestone- These specimens which are smaller and flattened comparedto the Upper Cretaceous forms, are found together with Laffitteina Mbensis MARIE, Miliolidae and Parachaetetesasvapatii PIA in. Montian and Lacazina sp,, Operculina sp.. Bolkarina aksarayi SİREL, Keramosphaera sp., Kathina•sp-, Planorbulfna cretae (MARSSON), Miliolidae and Parachaetetes asvapatii PIA in Thanetian.

  • Scandonea

  • Çaldağ Limestone

  • Miliolidae

  • Haymana

  • De Castro, P., 1971, Observazioni su Raadshoovenia Van Den Bold a i suoi rapporti col nuovo genere Scandonea (Foraminiferida, Miliolacea) : Instituto di Paleontologia Delia Universita di Napoli- Publicazione No : 42. 1-78. 1-17.

  • De Castro, P., 1974, Su alcune nuove miliolidi del Senoniano del Mediterraneo : Instituto di Paleontologia Delia Universita di Napoli- Publicazione No : 54, 1-19, 1-5.

  • Meriç, E. ve Görür, N-, 1980, Haymana-Polatlı Havzasındaki Çaldağ Kireçtaşımn yas konağı : M.T.A. Enstitüsü Dergisi, No : 93-94,137-141.

  • Özer, S. ve îrtem, O-, 1982, Işıklar-Altındağ (Bornova-îzmir alanı Üst Kretase kireçtaşlarmın jeolojik konumu, stratigrafisi ve fasiyes özellikleri : Türkiye Jeol. Kur. Bült., 25 (1), 41-48,1-2.

  • Sirel, E., 1981, Bolkarina, new genus (Foraminiferida) and some associated species from the Thanetian limestone (Central Turkey) : Eclogae Geol. Helv., 74 (1), 75-95, 1-5.

  • The Geological and Petrographical Investigation of the Raetaınorphic Rocks of Menderes Massif in the Vicinity of Ahmetler - Üşümüş (Manisa) and the Formation of Kyanite Pegmatoids
    Osman Candan Osman Özcan Dora
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    Abstract: The rocks in the studied area consist of the metamorphic rocks of Menderes Massif and the Neogene aged sedimentary, volcano-sedimentary and volcanic rocks. The metamorphic rocks are unconformably overlain by the Neogene aged rocks. The rocks of Menderes Massif are represented by the following rocks : fine-grained sillimanite gneisses, the intercalated unit of the silDmanite-kyanite-staurolite-garnet schists, sillimanite-kyanite-staurolite-garnet schists and staurolite-garnet schists which contain muscovite-quartz schist interlayers, andthe marble with emery deposits. The pegmatoides investigated in the metamorphic rocks are classified in twogroups according to their mineral paragenessis as the kyanite-andalusite pegmatoids and the muscovite pegmatoids. Although the muscovite pegmatoids are observed in a wide-spread area, the kyanite-andalusite pegmatoids areonly found in the kyanite bearing schists. The kyanite crystals examined in the pegmatoids have been formed by aprocess of Al migration from the Al-rich country rocks during the metamorphism. The amount of kyanite in someof the kyanite bearing schists reaches economic concentrations. In the studied area, the metamorphie conditionsincreased from medium to high grade metamorphism.

  • gneisses

  • pegmatoid

  • metamorphism

  • Manisa

  • Ashworth, J.R., 1975, Staurolite at anomalously high-grade : Contr. Mineral Petrol., 53, 281-291-

  • Atabek. S-, 1943, Gördes mika zuhurları hakkında rapor : M.T.A. Arviş No : 348.

  • Ayan, M.. 1971, Gördes migmatitleri ve güneydoğu yöresindeki uranyum zuhurları oluşumları: A.Ü.F.F. Jeoloji bölümü, (Yayınlanmamış).

  • Baltatzis, E. 1979, Staurolite-Forming Reactions in the Eastern Dalradian Rocks of Scotland: Contr. Mineral Petrol.. 69, 193-200.

  • Başarır, E., 1975, Çine güneyindeki metamorfitlerin petrografisi ve bireysel indeks minerallerin doku içerisindeki gelişimleri: EÜ.FF. izmir, (Yayınlanmamış)

  • Deer, W.A., Howie, R-A-, ve Zussman, J-, 1972, Rock forming minerals: Vol. 1-4.

  • Erward, G., 1975, Temperature-Pressure and mixed-volatile equilibria attending metamorphism of staurolitekyanite bearing asseblages, Esplanada Range, British Columbia: Geol. Soc. America. Bull., 86. number 12.

  • Egger, A., 1960, Glimmer, feldspar und disthen Vorkommen in Gabiet von Gördes, Manisa : M.T.A. Derleme Rap. No : 2759.

  • Hoschek. G-, 1967, Untersuchungen zum Stabilitaetsbereich von Chloritoit und Staurolit: Contr. Mineral. Petrol., 14, 123-162.

  • Hoschek, G., 1969, The stability of staurolite and chloritoid and their significance in metamorphism of pelitic rocks : Contr. Mineral. Petrol. 22, 208-232.

  • İnci, U-, 1983, Demirci çevresi Neojeninin jeolojisi ve bitümlü şist olanakları : Dokuz Eylül Üniversitesi, İzmir, (Yayınlanmamış)

  • Konak, N., 1982, Menderes Masifi`nin jeolojisi paneli: T.JKJ.M.O. Panel Kitabı.

  • Kun. N., 1976, Nebiköy-Kafaca ve Kavak köyleri çevresinin (Yatağan) jeolojik ve petrografik incelenmesi: Y. Lisans tezi, îzmir., (Yayınlanmamış).

  • Mason, R-, 1980, Petrology of the metamorphic rocks : George Allen and Unwin. London., 479 p.

  • Miyashiro. A., 1979, Metamorphism and metamorphic belts: George Allen and Unwin, London., 480 p.

  • Savaşçın, M.Y., 1982, Batı Anadolu Neojen magmatizmasının yapısal ve petrografik öğeleri: T-J-K. J.M.O. panel kitabı.

  • Schreyer, W.. Chinner, G.A., 1966, Staurolite-quarzite bands in kyanite quartzite at Big Rock, Rio Arriba County, New Mexico: Contr. Mineral. Petrol. 12, 223-244.

  • Turner, J., Verhoogen, J., 1960, Igneous and metamorphic petrology: International series in the earth sciencesMe Graw-Hill, London-, 694 p.

  • Turner, J., 1968, Metamorphic petrology: Me Graw-Hill, 404 p.

  • Vernon, R.H., 1979, Formation of late sillimanite by hydrogen metasomatizm (base-leaching) in some highgrade gneisses : Lithos, 12,143-152-

  • Vrana, S., 1973, A model of aluminium silicate accretion in metamorphic rocks: Contr. Mineral. Petrol. 41, 73- 82.

  • Winkler, H-GF., 1965, Metamorfik kayaçların oluşumu: İ-T.Ü. Müh. Mim. Fak. yayınları, No : 118-, 223 s.

  • Winkler, H-G.F-, 1979, Petrogenesis of metamorphic rocks: Springer Verlag-, New York. 344 p.

  • Yardley, B.W.D., 1977. The nature and significance of the mechanism of sillimanite growth in Cannemara schists, Ireland: Contr. Mineral. Petrol. 65, 53-58.

  • A study of Y (Yttriyum) Contents of Fluorites from the Leadzinc Deposits in the Northern Part of Göktepe (Ermenek Konya)
    Mustafa Kuşcu
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    Abstract: Samples of fluorite minerals collected from the northern part of Göktepe (Ermenek-Konya) Show Yvalues ranging from 2 to 23 ppm. It is suggested that the fluorite is derived from the formation waters and not ofmagmatic origin because of the very small and restricted range of Y values.

  • fluorite

  • Pb-Zn

  • Konya

  • Brown, J.S., 1970, Mississippi Valley type lead-zinc ores : Mineral. Deposita, 5,103-109.

  • Demirtaşlı, E., Gedik, t, ve îmik, M., 1978, Ermenek batısında Göktepe-Dumlugöze ve Tepebaşı arasında kalan sahanın jeolojisi: Türkiye Jeol. Kur. 32. Bil. Tek. Kur. Bildiri özetleri, 9-

  • Kuşçu, M-, 1983, Göktepe-Ermenek (Konya) yüresinin jeolojisi ve Pb-Zn yatakları: Doktora tezi (yayınlanmamış) , Selçuk Univ., 181 s.

  • Kuşçu, M., 1984, Göktepe (Ermenek-Konya) yöresinin PbZn zuhurları (hazırlanmakta).

  • Sangster, D.F., 1976, Carbonate hosted lead-zinc deposits: in Wolf, K.H., ed., Handbook of Stratabound and Stratiform Ore Deposits: Elsevier, New York, 6, 447- 456.

  • Smith, F.W., 1974, Factors governing the development of fluorspar ore bodies in the North Pennine ore field! Doktora tezi (yayınlanmamış), Durham Univ., 225 s.

  • Stratigraphy and Structural Position of the Allochthonous Units Around Pınarbaşı (Kayseri)
    Siyami Özer Hasan Çetin İsmail Terlemez Muhsin Sümengen Emin Erkan
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    Abstract: The study area lies between Sarız-Şarkışla-Gemerek-Tomarza. Geyik Dağı Unit is situated in the southof the region and comprises a regular sequence ranging from Cambrian to Tertiary. This unit is relatively autochthonous with respect to allochthonous units.Allochthonous rock units of Paleozoic-Mesozoie age crop out towards north which preserve their primary properties,and are locally metamorphosed. These are: Kireçliyayla Nappe including Triassic-U- Cretaceous carbonates, Belören Nappe consisting of Triassic-Cretaceous rocks, Aygörmezdağ Nappe comprising a sequence from U. Devonian toU. Cretaceous, and Hmzırdağı Nappe consisting of metamorphosed Permian-L. Cretaeous rocks. The uppermostparts of some of these nappes are formed by the ophiolitic melange, and all the nappes are overlain by an ophiolitenappe. Emplacement age of the allochthonous units is Late MaestrichtianThe Tertiary formations unconformably overlying the allochthonous units crop out over extensive areas. ThePaleocene-Eocene formations to the nort of the region, which are olistostromal in character, indicate that thetectonic stability which prevailed after the emplacement of the allochthon was disrupted once again.

  • ophiolite nappe

  • allochthonous

  • olistostromal

  • Kayseri

  • Altmer, D., 1981, Recharches stratigraphiques et micropaleontologigues au NW de Pınarbaşı (Taurus oriental Turquie): Univ. de Geneve, Those, 450 s.

  • Demirtaşlı, E., 1967, Pınarbaşı-Sanz-Mağara civarının jeolojisi raporu: Maden Tetkik Arama Enst., rap. no: 4384. Ankara (yayımlanmamış).

  • Erkan, E., Özer, S., Sümengen, M., ve Terlemez, 1., 1978, Sarız-Şarkışla-Gemerek-Tomarza arasının Temel Jeolojisi : Maden Tetkik Arama Enst. rap. no: 5646, Ankara (yayımlanmamış).

  • Lebkuchner, R.F., 1957, Kayseri ve Avanos-Ürgüp havalisi ile Boğazlıyan havalisinin uzun yaylaya kadar olan kısmının jeolojisi hakkında rapor (pafta no: 76/2,4; 77/1, 4; 78/1, 3) : Maden Tetkik Arama Enst., rap. no: 2656, Ankara (yayımlanmamış).

  • Özkan, A., 1956, 1/100-000 ölçekli Türkiye haritası 77/4 Kayseri paftası VHI g. doğusunun jeolojik etüdü hakkında: Maden Tetkik Arama Enst.. rap. no: 2388, Ankara (yayımlanmamış).

  • Özgül, N., 1976, Toroslarin bazı temel jeoloji özellikleri: Türkiye Jeol. Kur. Bült, 19/1, 65-78.

  • Özgül, N, ve diğerleri, 1973, Tufanbeyli dolayının Kambriyen ve Tersiyer kayaları: Türkiye Jeol. Kur. Bült, 16/1, 82-100.

  • Tekeli, O., 1980, Toroslarda Aladağların yapısal evrimi: Türkiye Jeol. Kur. Bült., 23/1, 11-14.

  • Yoldaş, R., 1972, Sarız (Kayseri) dolayının Jeolojisi ve petrol olanakları (Elbistan L36-b2 ve L37-al paftalan): Maden Tetkik Arama Enst., rap. no: 4729, Ankara `yayımlanmamış).

  • Features and Interpretations of the Different Types of Skarn Formations of the Akdağmadeni Mining District Yozgat
    Ahmet Sağiroğlu
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    Abstract: Skarn rocks of the Akdağmadeni mining district are located on and around adamellite type graniticrock-regional metamorphic rocks contact. Skarn formations occur both within the granitic rock (endoskarns) and themetamorphic rocks (exoskarns).The character of the skarn alteration within the marginal zones of adamellite is closely related to the compositionsof the country rocks which are in contact with the adamellite. Endoskarns in contact with dolomitic marble have themineral assemblage of magnetite-pyroxene-phlogopite-and the usual silicates of adamellite. Alteration in the marginalzones of the magmatic rock, in contact with calcitic marble manifests itself as saussuritization, sericitization of feldspars and the presence of phlogopite.Exoskarns mainly developed within the carbonate rocks of the metamorphic rocks and show different features depending upon the composition of the parent rock. Field, petrographic, mineralogic and geochemical data indicate thatthe skarn alteration took place in different stages. In ca-.citic skarns four stages of alteration are identified; 1) M-ig*netit-garnet-pyroxene stage, 2) Epidote-amphibole stage, 3) Epidote-chlorite stage and 4) Kaolinite - muscovite-stageApparently conditions of these four stages overlapped, however mineral assemblages of each stage are still distinguishable and characteristic. It is understood from petrologic, geochemical and petrographic data that skarnizuigsolutions were iron-rich and gradually became aluminum rich and less hot in time and distance from contact. Activity of O2 was low and became lower probably due to temperature gradient. Activity of CO2 on the other hand wasmoderate and consequently neither wollastonite nor siderite and graphite formed. Mineral assemblages indicate thacthe formation temperatures for the alteration stages were; 600°C, 450-500°C, 400°C and 300°C respectively. The lowaO2 and moderate aCO2 despite such high temperatures and O2 and CO2 producing reactions, can only be exlained bythe escape of CO2 and O2 from the environment. Two step alterations occur in dolomitic marble which correspond tothe first three stages of the calcic skarns; 1) Spinel-forsterite-pyroxene-magnetite-phlogopite stage and 2) Serpentinealteration stage.

  • phlogopite

  • marble

  • skarn

  • Yozgat

  • Atherton, M.P. ve Tarney, J>, (eds), 1979, Origin of granite batholiths: Shive. Orpington Kent.

  • Baykal, F., 1945, E`tude geologigue du Taurus entre Darende et Kayseri (Anatolie): Revr 1st., 10, 133-142.

  • Deer, W.A. Howie, R-A. ve Zussman, J., 1962, Rock forming minerals: Longmans, London. 529 s.

  • Deer, W.A., Howie, R.A. ve Zussman J-, 1978, Rock Forming sillieates` volume 2A, single chain silicates: Longmans, London.

  • Erkan, Y-, 1980, Orta Anadolu masifinin kuzeydoğusunda (Akdağmadeni, Yozgat) etkili olan bölgesel metamorfizmanın incelenmesi: Türkiye Jeol. Kur. Bült, 23, 213-218.

  • Harpum, J.R., 1963, Petrographic classification of granitic rocks in Tanganyika by partial chemical analyses : RecGeol. Surv. Tanganyika, 10, 80-88.

  • Huckenholz, H-G. ve Yoder, H-S. Jr., 1971, Andradite stability relations in the CaSiO^Fe^Os join up to 30 Kbar: NJb. Miner Abh., 114, 246-280.

  • Huckenholz, HG-, Unhuber, W. and Springer, J., 1974, The join CaSKVAl2O3 -Fe2O3 of the CaO-Al2O3 -Fe2O3 - SiO4 quaternary system and its bearing on the form mation of granditic garnets and fassaitic pyroxenes: N. Jb. Miner. Abh., 121,160-207.

  • Ketin, Î-, 1963, The geological map of Turkey, Kayseri sheet (1: 500 000) : Maden Tetkik Arama Enst, Ankara.

  • Liou, J.G., 1973, Synthesis and stability relations of Epidote, Ca2Al2Fe Si3O12 (OH) : J. Petrology 14, 381-413

  • Miyashiro, A., 1973, Metamorphism and metamorphie belts: George Allen and Unwin, London. 492 s

  • Rease, P., 1974, Al and Ti contents of hornblend, indicators of pressure and temperature of regional metamorphism: Contr. Mineral. Petrol., 45, 231-236.

  • Rao, A.T. and Rac, M.W., 1970, Fassaite from a eale-silicate skarn vein near Gondivalasa, Orissa, India: Amer. Mineral-, 55. 975-980

  • Rose, W.A. and Burt, D.M., 1979, Hydrothermal alteration; Barnes, H.L.S ed., Geochemistry of hydrothermal ore deposits da : John Wiley and Sons Ltd. New York. 173-235.

  • Rumble, D., 1976, Oxide minerals: Min. Soc Am. Short course note*, volume 3, chapter 3.

  • Sağiroğlu, A., 1982, Contact metasomatism and ore deposition of the Lead-Zinc deposits of Akdağmadeni, Yozgat, Turkey: Londra Üniversitesi (Yayınlanmamış) doktora tezi, 324 s.

  • Sen, S.K., 1959, Potassium content of natural plagioclases and origin of antiperthites: J. Geology, 67, 479-495.

  • Turner, FJ . and Verhoogen, I-, 1960, Igneous and metamorphie petrology, 2 nd ed: Me Graw Hill, NewYork, 694 s.

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  • Conodont Biyostratigrapity of the Triassie Rocks, Southwest of Antalya, TURKEY
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    Abstract: In Southern Turkey, South-west of Antalya City, three of the measured sections (Teke Dağı, Saklıkentand Dömek Tepe) provide sufficient micropalaeontological base for future biostratigraphical studies. The Saklıkentsection comprises red or buff and grey biomicrite, both of which contain ammonites and conodonts. According tothe conodonts, it belongs to the Middle Triassie. The Dömek Tepe section consists of grey, mottled red biomicritewhich also contains conodonts. They indicate an Upper Triassie age. In the Teke Dağı, proposed as the type sectionof the Triassie rocks in Antalya, the succession is characterized by vermicular limestone and red calcarenite rich inmarine fauna (ammonites, conodonts, foraminifers... etc.) These Middle-Upper Triassie limestones are typical of Alpine-type Triassie and are thought to be pelagic sediments deposited on sea-mounts within ocean basins. In Antalyaseveral species of the Middle-Upper Triassie conodonts Crathognathodus, Cypridodella, DMymodella, Diplododella,Enantiognathus, Epigondolella, Glaiigonâolella, Meocavîtella, Neogondolella, Neohindeodella, Prioniodella, Prioniodiaaand Xaniognathus occur in this environment.

  • biomicrite

  • ammonite

  • limestone

  • Antalya

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