ABSTRACT: The geologic evente ana feature« developed İn the mvestigatea area, which İs situated «a the south of Şarkışla, denote two tectonic periods, namely Paleotectonlc period and Neoteetonle period. Tme F&- leotectonto period to characterized by some geologic évente and features buried and oceured at the end of Late Miocene, Thme are coanpressive stresseÉ* alfeettag the study area during Pateocene, Eocen© and end of Oligocène, and NE-SW trending folds and fiirusts formed depending on these compressée s ^ ^ e s . In ad» dWon ^ese tlmm are ^ n e NW-SE toendmg obMque-s% faulty As to NeoSeotonio period, it fe" by PMoeene continental deposits and contemporaneous vertical movements,
ABSTRACT: îııvesttgated area Is located between Tokat and Sivas, northeast of Çırçır, It has been aimed to examine the petrochemical features of Yıldızdağı Gabbro In this paper, Yılcîızctafı Gabbro, possibly Eocene in age, Is represented by hypabyssal rocks displaying porphyritic, ophMo and poîkllitle textures. It consists mainly of labradorite-bytownlte, hornblende, rarely diopdde and olivine, m addition to opaque mineral», sphene and/or rutile. According to the result of amMyses and evaluation», İt has been defended that Yüdızdağı Gabbro ims tholeiitic character and probably formed in an arc system during Eocene.
ABSTRACT: Several Pb-ln-Cu nuneraMzatioo» have been observed İn Çanakkale, Yenice province area. Ho doubt most significant of these are Arapueandere? where two mining operations ore underway» and Kalkim - Handeresi vicinity where drilling work has been completed. Two points of view are accepted on the gemmas of mineraltatton in the Teflon, The Sofular and Kullum mmoralliy.aüon observed here are typical products of contact metainorphiwn. The harnfels zones observed here indicate that toe meéisonmtlo in toe FalizaMôns ar© formed as a result of intrusion oantact. There İş no disagreement on the genesis of these two mineraUEatlon, both Turkish and expatriate geologist having conducted researches concur on this. The Fb-Cu`mİnerali/ atioiLs in Arapueandere and Kurttas. are tot the same para^enesis, l^pe of deposits are in the form of veins. The geochemical analyses made for Pb miıit-ralizütlons tn Arapuçandere and Kurt taşı are of th© mam parageneste. Type of deposits are in ®LB form of veins. The geocAemlcal analyse» roa^ far Pb mtoaralimtton In arkoslc series and An mineralization to diabase in arapucäitdere vicinity have indicated that these rocks formed the preconcentoation sources for the said minerals. No close has been observée between the dasitte breccias and anoesited of Tertiary volcanism, analysethvlth regard to petrologieal ciuaUt`es and aa wall roota and mineraMzatton, On t^e other hand, tile Pb-Zn m tlıe pre-eoncentrated form remoMlteed especialtty during iuUUc intrusions in ttte region have been immediately imbedded In the joints an4 faults to the form of veto« upon contact with hydrometelflfc sulphurous gluttons,
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ABSTRACT: Mı© study area lies within the Ankara, Elmadağ- and Kalecik region, Central Anatolia. In this region, the Lower Triassic to Quteraary aged litho imitas outcrop. The Emir Formation is the oldest authcchthoiLOUs müt ini the region. It is affected by the metainiorphtsm of green-schist fades, and contains metaperidotites, These »re also effected by the same luet&mo^phfem ,The Emir Formation grades upward» in to the Mmadaf Formation, This formation Is also a metaeiwphle unit In the green-schist fades, and is inter, calated with the coeval volcanic unit, namely the OrtakÖy Formatton, The Ortalcöy Formatton mataiy contains of volcanites it preserved pîMow structures, and radiolarites and limestones. The Etoiadaf Formation grades upwards In to the Keçikaya Formation consisting of sandy Hmeston© and limestone. All these unite have been named the Ankara Group, and are cut by diabase dikes. The Ankara Group is of Triassic age» and atoo contains variously sized blocks composed of the Carboniferous and Permian elastics and limestones througlïDut the area* The Lia£§ıe Hasanoğlan formation unconf ormably overlies the Ankara Group witii a basal conglomerate, and consists of a sandstoneanuidstone-llmestone alternatwDn, Upwards, it grades In to the clayey Ume&tone. The Eldlvan Opbiolite Complex shows the characteristics of a regular ophlolite sequence, however fin the »tudy area the uppermost levels are not observed. After the emplacement »of the K Uli van Oph&olite Complex^ the depth of th© äepositional basin gradually increased. In tMs basin, the Hisarköy FOPnmtïôii oonslMng of sandstone, volcareiilto, conglomerate and vulcanic», formed together with the Karadağ Forinutijoii the latest showing the charecteris tics of a normal flysch. These units toterflnger laterally. Both formations contain variously sized olistol`fchs and oO«thostrome§ derlvea from Liu FJdivim Ophio lite Complex the Hîsarköy and Karadağ formations grade upward» faito the Ihcapitiar and Samanlık forma, turns of maestriehtianage. The Samanlık,Formation consists of interniediate turbiditesf and shows,a graded contact with the Paleocene BMİitaşlar Formation characterised by ttie proximal and intöritiediate turbidltBi, Huge limestone oltetoüths derived from the peneconteniporaneous reefs occur to the Dizilitaşlar FoiTnation, The Ätohmutlar Formation which is Eocene in age, and is c»Mnposed of conglomerates, sandstones, shales attd marls was deposited in toe shelf, deltaic, beach, coastal plato and alluvial fan environments. The Deliler Völcanite te of the same age witti ttie Mahmutlar Formation, The Oligocène Mlâkincedere Formation consists of conglomerate, mudatoiia, sandstone, marl and gypsium, deposited in tiie meandering river and evaporitlß lake environmente. The Late Mûcene-Fliocene Tekke Vulcanite laterally intercalates with the Karapınar» Kavaklı and Mamak Formatioiis. The Karapınar Formation WJIH depositnd in the alluvial fan environment, and consists of conglomerate, sandstone and tuff; ine Kavaklı Formation tonipored of clayey limestone, marl, daystone, öomgfomerate, sandstone and tuff was deposited in the fluvial and lacustrine environments; and the Mamak Formation is made up of agglomerate and tuff. The Bozdaf Basalt which is the last product of the volcanic activity in the region unconf ormably overlies all cf the «alder units. The Pliocene Gölbaşı Formatton is composed of uneonsolidated to poorly con lolidated cîasticn. and shows a considerable lateral extentkm. The tectumlc structure of the region resulted from the Alpine orogenesis, In the study area, there are a number of low angle upthrusts. Along these uptlirusts» it appears that the Ankara Group overlies the Upper Cretaceous and Oligocène units, the Upper Cretaceous-units overlie the Faleocene sediments, and the Paleo- cene units overlie tihe Socene deposits. In the light of toe evidence resuittoi; from the field ob»erva#on§, a géotectoriic madel for Central Anatolian has been suggested.
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ABSTRACT: The résulte ïichioved from t lie geologic study, carried out to the area bounded by the town» of IMkïîï-Bergama-Çanaarli of Izmir region, are presents!, and tw© plftte teutonic approaches to th© fenettc Inter[»retatioii of igneoun rockn are nuidv. Ma^niiitic activity started with the Kozak granite intrusion that had probably oeoured during Eocene- Oligocenef foUowedi 1^ ttie Yuntdaf vokanicH of ^MäMJÜpper Miocene age. Igneous product*, mainly of irustal aal partly of upper mantle origin, ended up wilÄ the Dededağ basalte of Middle-Upper Miocene age, Geoeheiiiieal data indiwites a hybrid magma, mainly of hİgh-pota»Bİo ea leal kal ine and partly of a affinity»
ABSTRACT: Bese imim of the Upper Cretaceous are characterised by fiysch-lMce deposits having voïcanMastie, bl^wücielastto and sMieiclastic turbtdite laye^, and they atopta^ different deposlttonaJ correspondlii® to ülope, alope-lme to bmm floor. Slope deposite emM of nodular Uknartonèsand dlaorganised sequen^s of the volcmdclmUe sediments tacfludÉiç »lumps aiwl many sand balls Thin bed död, graded Hmestone» and volcanogenio sediments Inolutlîng tuff-tufîté and lava flovv layers, belong to slopebaze. laminated sediment« which represent vawe»iype alternat^ns and cert^i sedimentary structures Indi cate being formed by finegrained turbld% ana bottom currents, on levem and flank» of deep-sea fans andaround seamouni». At the base, those flysch sequence« deposited on a deep,sea ton system in the margtoaa basin ,begin with thick, mas»i^e conglomerates of debris flow deposite. TM« pebbly unit rests on the Alfcian Cetwmanian hard-ground inc Ueated by ntoaformational breccia H^Wy variable constituents of the flysch nubfacies point to derivation from some local sourceasuch as corbonate seamâunts volcanic ^es and htehlands,