Physical Sciences and Mathematics Commons^™

Geographical Information Systems Based Using Logistic Regression Landslide Susceptibility Assessment Of The Çubuk-Kaleci̇k (Ankara) Between Şabanözü (Çankiri) Region, Hasan Elmaci, Senem Teki̇n, Nail Ünsal

Bulletin of the Mineral Research and Exploration

Landslides frequently occur particularly in certain parts in our country as well as in the world. They sometimes turn into natural disaster and cause socio-economic losses in significant magnitude. In this study, the landslide susceptibility analysis was performed in a total area of 2360 km² at 1/100,000 scale in map sheet of Çankırı-H30. According to the inventory map, 4,79% of the study area is formed of landslide areas and the movement type of available landslides are generally observed in the form of rotational slip. According to the database of the Turkish Landslide Inventory Map prepared by MTA, there are …

Alteration Zones Associated With Eocene Magmatism In The Olur (Erzurum) Area, Eastern Pontides And Their Significance, Güzide Önal, Mustafa Akyildiz, İsmet Cengi̇z, Mehmet Aslan, Serkan Özkümüş

Bulletin of the Mineral Research and Exploration

The Alpine Orogenic Belt with numerous porphyry Cu-Mo-Au mineralizations, starts from Eastern Europe continues through Turkey and the Caucasus and extends into Iran and Afghanistan. The study area of the Eastern Pontides is in this orogenic belt. Using fi eld and laboratory studies an attempt has been made to establish the origin of Yeşilbağlar, Kaban and Köprübaşı alteration zones in the Olur area (Erzurum). In the study area Early Eocene Coşkunlar volcanics and sub volcanic rocks have contact with the Oltu çayı volcanics of Early-Middle Jurassic. Alteration in the study area effects these Oltuçayı and Kaban volcanics. In the study …

Structural Features Of The Ni̇ğde Massi̇f İn The Çamardi (Ni̇ğde) Di̇stri̇ct, Ramazan Demi̇rci̇oğlu, Yaşar Eren

Bulletin of the Mineral Research and Exploration

In the Çamardı (Niğde) region, Niğde Massif is composed of Palaeozoic-Mesozoic marble, gneiss and quartzite. The high-grade metamorphic rocks of the Massif are cut by Cretaceous granodiorites. These rocks are unconformably overlain by Paleocene-Eocene low-grade metamorphic rocks. Upper Cretaceous-Eocene flysch and island-arc type volcanic rocks tectonically overlie the above mentioned units. The youngest rocks in the area are Oligocene-Quaternary continental sedimentary and volcanic rocks. The rocks of the massif have been subjected to at least four ductile deformational events, that are designated as D1, D2, D3 and D4. The first phase of deformation produced recumbent isoclinal folds (F1-F2 folding) which …

An Approach To Coast Edge Line At The Eastern Antalya Marginal-Marine Sea Sides, Muhittin Görmüş, Levent Başayi̇ği̇t, Ahmet Uysal

Bulletin of the Mineral Research and Exploration

In this study, geological and geomorphological studies having the solution approaches for the coast edge line problem at the marginal-marine environments were realised and some solutions were proposed. The eight following locations were chosen: South of Lara Main Road (1), Aksu River Exit (2), Acısu Stream-2 (3), Ağılısu Stream Exit (4), Köprüçay Exit (5), seashore at the south of Evrenseki (6), seashore at the east of Side (7) and Kızılot (8). Past and new images of the Google Earth satellite views, topographic maps and aerial views; lithological-sedimentological observations, fauna data in sediments, plant cover, artificial structures, previous literature and related …

One Of The Mai̇n Neotectoni̇c Structures İn The Nw Central Anatoli̇a: Beypazari Bli̇nd Thrust Zone And Related Fault-Propagati̇on Folds, Gürol Seyi̇toğlu, Korhan Esat, Bülent Kaypak

Bulletin of the Mineral Research and Exploration

This paper suggests that the structure known as “Beypazarı flexure / monocline” in the Turkish geology literature should be named as “Beypazarı fault-propagation folds”. Beypazarı, Kilci and Başören blind thrusts together with Erenler back thrust constitute the Beypazarı Blind Thrust Zone which is an active neotectonic structure as indicated by earthquake activity. NW-SE contraction created by the interaction between the North Anatolian Fault Zone, the Kırıkkale-Erbaa Fault Zone and the Eskişehir Fault Zone produced the Eldivan-Elmadağ Pinched Crustal Wedge, the Abdüsselam Pinched Crustal Wedge and the Beypazarı Blind Thrust Zone. These structures take up the internal deformation of the Anatolian …

Strati̇graphy And Structure Of The Southeastern Part Of Pi̇ramagroon Anti̇cli̇ne, Sulai̇mani̇ Area, Northeast Iraq, Kamal Haji Kari̇m, Polla Azad Khanaqa

Bulletin of the Mineral Research and Exploration

The Piramagroon anticline (or Pira Magrun Mountain) elongates directly to the northwest of Sulaimani city, Northeast Iraq and its southeastern part contains two other anticlines, named Harmetool and Yakhyian anticlines in addition to their complementary synclines and many other smaller folds. The anticline has experienced intense search for oil in the last few years and a well is drilled to a depth of 3000 meters but, any evidence of oil or gas wasn’t found. In the present study, the southeastern part has been studied stratigraphically and structurally and the previous studies have been critically reviewed which may help to reason …

The Reaction Of Physical Transformation Of The Gravity Data And Linearity Dilemma, Ertan Toker

Bulletin of the Mineral Research and Exploration

This paper consists of opinions on the article entitled as “Investigation of the Seismic Velocity Distribution and Crustal Structure of Turkey by means of Gravity Data” which was published on the page 185 of the 153rd issue of the Bulletin of Mineral Research and Exploration. Within this context, it was aimed at defining some dilemmas encountered in the article, which was targeted in the exploration of the crustal structure in plate scale by means of data sets, and informing the reader. Here, the interactive relationships of Gravity and Seismic methods of which each one are discipline of expertise will be …

An Investigation On Single-Particle Impact Breakage Functions Of A Gold Ore By Drop-Weight Technique, Ömürden Genç

Bulletin of the Mineral Research and Exploration

Impact breakage functions for a gold ore from Bergama region (Turkey) was estimated based on the single-particle impact breakage distributions of particles obtained from drop weight tests. For this purpose, a modified manual version of a JK Tech drop-weight test device was used. Effect of specific comminution energy (Ecs) on impact breakage distributions were investigated. Relationship between specific comminution energy and impact breakage product fineness (t10) parameter was established. Ecs-t10 model given in the literature was successfully fitted to the breakage test results. Ecs-t10 impact breakage model for the gold ore was proposed to be used in breakage function estimation. …

Permeability Of Savcibey Dam (Bi̇leci̇k) Axis Location And Design Of Grout Curtain, Mustafa Can Canoğlu, Bedri Kurtuluş

Bulletin of the Mineral Research and Exploration

This study comprise the design of the planned grout curtain in Savcıbey Dam (Söğüt/Bilecik) in order to provide impermeability along the dam axis. Within the context of field studies, engineering geology map was generated, ground investigation drilling was realized and permeability tests were performed. Within the field studies, the joint conditions of the geological units (Triassic aged Bozüyük Metamorphic schists) under the dam axis and its effect on permeability was observed considering the positions of the discontinuities with regard to the dam axis location. Orientation of discontinuities generally have strikes changing between N – S and NNE – SSW. 5 …

Sodium Sulfate (Glauberite-Bloedite) - Halite Association İn The Tertiary (Upper Miosene - Pliocene) Katrandedetepe Formation, Ereğli̇-Bor Basin, Turkey, Gökhan Kadinkiz, Mustafa Karakaş, Mehmet Pekgöz, Abdurrahman Murat

Bulletin of the Mineral Research and Exploration

This study covers the investigations related to the glauberite-halite minerals detected in Neogene deposits of the Ereğ- li-Bor Basin in the Central Anatolia. The basin consists of Paleozoic basement rocks, the unconformably overlying Paleocene-Eocene-Oligocene marine sedimentary and volcano-sedimentary rocks, and the Lower Miocene-Pliocene lake deposits at the top which unconformably overlie all underlying layers. In the study, core drillings related to the determination of geological characteristics and investigation of the mineral potential of buried salt deposits were carried out in the Ereğli-Bor basin. As a result of drillings carried out, glauberite-bloedite, halite and bituminous shale horizons, which possess significant thickness …

Investigation Of Güllük (Muğla) Wetland By Stable Isotopes (Δ18o, Δd), Melis A. Somay

Bulletin of the Mineral Research and Exploration

Wetlands play an important role in the hydrologic cycle. This investigation was completed to determine the origin of waters and recharge-discharge areas using stable isotopes (δ18O and δD) which are fingerprints of the water in Güllük (Muğla) wetland. This area is important both economically and in terms of aquaculture environment in Turkey. Sample locations were selected from not only wetlands but also the possible recharge area that consists of karstic springs and streams. EC (Electrical Conductivity) of the waters range between 5080-41000 µS/cm, except streams. δ18O and δD contents of the samples ranged from -6.00‰ to 0.50‰ and from -29.1‰ …

Sedimentology, Mineralogy And Origin Of The First Discover Magnesitedolomite Belt In Ma’Rib District, Sw Arabian Peninsula, Saad Zeki Abdulkadi̇r Ai̇-Mashaiki

Bulletin of the Mineral Research and Exploration

Magnesite mineralization of high purity was discovered and described herein for the first time from metamorphosed folded belt from Al-Thanyiah locality in Rub’Al-Khali sector, 360 km east of Sana’a City, northwest Yemen. The magnesite-metamorphic belt, belonging to the Precambrian/Neoproterozoic age? comprises thrust belt, which trends generally N-S direction. Magnesite mineralization was identified in an extended carbonate-metamorphic belt for several tens of kilometers cf. 31 km and occurred in association with 8 stratigraphic units. The thicknesses of pure magnesite bearing units are variable and ranges from 20 to 60 m, associated with dark green chlorite-schist with intersecting huge ultrabasic intrusions. Geochemical, …

Maastrichtian - Selandian Planktonic Foraminifera Biostratigraphy And Palaeoecological Interpretation Of Akveren Formation In Bartin Area (Western Black Sea, Turkey), Caner Kaya Özer

Bulletin of the Mineral Research and Exploration

The changes in planktonic foraminifera assemblages were studied in two sections composed of clayey limestone, limestone, claystone and marl in the Akveren Formation in the Bartın Province. Pseudoguembelina palpebra, Racemiguembelina fructicosa, Abathomphalus mayaroensis and Pseudoguembelina hariaensis biozones in the Maastrichtian and Parvularugoglobigerina eugubina, Glomobanomalina compressa/Praemurica uncinata, Praemurica uncinata and Morozovella angulata biozones in the Paloecene were determined using planktonic genus and species identified in these sections. Paleoecological interpretations in this study were completed by using the relative abundances of paleoecological species identified in these biozones. The abundance of Rugoglobigerina spp., Heterohelix globulosa, Pseudoguembelina spp., species that tolerated changes in sea …

The Importance Of Amount Of Settlement In Determining The Bearing Capacity Of Soils, Selçuk Alemdağ, Aslıhan Ci̇noğlu, Elif Gacener

Bulletin of the Mineral Research and Exploration

In this study, it is aimed to determine safe bearing capacity of soils, which are out cropped around Tamzi and Akcakale villages located in Gumushane, providing allowable settlement conditions for an optimum foundation design. To define the geotechnical properties of soils, three trenches were dug and two seismic refraction with two Multichannel Spectral Analysis of Surface Waves (MASW) were carried out in each research area. Sieve analyses, shear box tests, triaxial compression tests were carried out on disturbed and undisturbed samples taken from the trenches. Seismic velocities of the soils are determined by seismic refraction and MASW methods. While determining …

Grain Size, Total Heavy Mineral And Element Distrubition Of Actual Sediments On Bottom Of Hisarönü And Datça Bays And Its Control Factors, Barbaros Şi̇mşek, Mustafa Ergi̇n, Murat Evren, Özgür Türkmen, Serkan Palas, Hakan Pehli̇van, Bahri Serkan Aydemi̇r, Füsun Öcal

Bulletin of the Mineral Research and Exploration

This paper explain research results for Holocene sedimentary processes and controlling factors on Datça and Hisarönü Bays located in south west Turkey. For this purpose, we collected sea bottom grab samples (upper 30 cm) from 71 stations and seismic profiles (we use only one sample explain to sedimentary process) collected in MTA-SELEN research ship on Hisarönü and Datça Bays. It is known and widely applied in seismic analysis methods and techniques are used on seismic profile which according to the continental shelf edge or threshold current -90 / -120 m water depth. At the same time, seismic profile were showed …

Assessment Of Metal-Metalloid Content Using Geostatistical Methods In Groundwater Of Karabağlar Polje (Muğla, Turkey), Bedri Kurtuluş, Çağdaş Sağir, Özgür Avşar

Bulletin of the Mineral Research and Exploration

In this research, heavy metals (Ti, Cr, Mn, Fe, Co, Ni, Cu, Zn, Mo, Cd, Ba, Pb) and metalloids (As) which were sampled from 84 wells used as drinking water and irrigation water resources in Karabaglar Karstic Polje (Mugla, Turkey) were analyzed. The results were evaluated by different statistical methods in order to investigate the interaction between elements. Ti, Mn, Fe, Zn, Mo and Pb were detected in many wells. According to the results, As and Cu has the strongest correlation (R=0.832). As-Ni (R=0.789) and Cu-Ni (R=0.776) are the other strong correlations. The relationship between these elements were also shown …

Response To The “Reaction Of The Physical Transformation Of The Gravity Data And Linearity Dilemma”, Uğur Akin

Bulletin of the Mineral Research and Exploration

There is not any filter such as the “apparent gravity linear filter”, which is mentioned by the criticizer, in the literature of geophysical potential methods.

The “apparent density filter” was used in the study. As the name implies; the crustal structure of Turkey was investigated in the article of “Investigation of the Seismic Velocity Distribution and the Crustal Structure of Turkey” (Akın, 2016). So; the article had different findings. The “Conrad discontinuity” has been one of the findings of this article. Or else; the distribution related to the Conrad discontinuity has not been the main topic of the article as …

Proposals For The Standard Presentation Of Elements Of Natural And Cultural Heritage Within The Scope Of Geopark Projects, Yahya Çi̇ftçi̇, Yıldırım Güngör

Bulletin of the Mineral Research and Exploration

The aim of this work is to develop suggestions for designated standards for the display of natural and cultural assets in the design of a Geopark. During a continuing dynamic period detailed work continues to be carried out by experts on the natural and cultural assets found within Geosites that are part of Geoparks according to National laws and guidelines and international agreements. This article proposes standard identity cards, to be used during the period of preparation of a Geopark Project within an area that encompasses a known number of natural and cultural assets. This enables a shared organisation and …

Ostracod Fauna And Its Environmental Characteristics Of Köprüköy / Erzurum (East Anatolia) Region, Ümit Şafak, Meral Kaya

Bulletin of the Mineral Research and Exploration

Study was carried out within Horasan formation around Köprüköy located in the east of Erzurum This formation is available in the region of Erzurum-Pasinler-Horasan forming the northest where neo-tectonic sediments are surfaced in East Anatolia. The unit is composed of pebble stones, clays and marl iteration. Ostracod, gastropod and pelecypod species were observed on the levels of clay stone with soft clasts and marl taken from the area. Generally, ostracod species which are unique to Ponto- Caspian basin were described in these units within the scope of the study. These are such ostracod species as Amnicythere idonea Mandelstam, Markova, Rozyeva …

Diagenetic History Of The Rock Units Of Bozkir Unit Controlled By The Triassic Rifting, Bozkir-Konya, Hüseyin Yalçin, Ömer Bozkaya, Mine Takçi

Bulletin of the Mineral Research and Exploration

The Bozkır Unit representing the northern edge of the Taurus Belt. It comprises from bottom to top, three distinct structural entities: the Upper Triassic pre-rift (Korualan Group), the Upper Triassic-Upper Cretaceous syn-rift (Huğlu Group) and the Jurassic-Cretaceous Boyalı Tepe Group as to their structural settings. The Korualan Group is represented by the alternations of carbonate (limestone, dolomitic limestone, dolomite) with radiolarite and chert intercalations and clastic rocks (sandstone, siltstone, mudstone, shale). The Huğlu Group is made up of volcanic (basalt, andesite) and pyroclastic (tuffaceous sandstone) rocks including radyolarite, limestone and clastic rock (sandstone, siltstone, shale) intercalations. The Boyalı Tepe Group …

Investigation Of The Water Resources In Köprüören Basin (Kütahya) With Environmental Isotopes, Şebnem Arslan

Bulletin of the Mineral Research and Exploration

In this study, the isotopic properties of the water resources located in Köprüören Basin are determined. δ18O and δD contents of the samples respectively ranged from -10.84‰ to -7.09‰ and from -73.6‰ to -53.3‰ in dry season and ranged from -10.81‰ to -4.71‰ and -73.3‰ to -41.5‰ in wet season. Majority of the samples plotted along Global Meteoric Water Line although some of them show deviations from this line. The reason for the deviations are attributed to evaporative enrichment, modifying the original δ18O and δD signatures of the samples. δ18O content of the thermal samples are not modified as a …

Spatial Cluster And Outlier Identification Of Geochemical Association Of Elements: A Case Study In Juirui Copper Mining Area, Thanh Nguyen Ti̇en, Tuyen Vu Danh, Hung Tri̇nh Le Hung, Hang Nguyen Thi̇ Le Hang

Bulletin of the Mineral Research and Exploration

Spatial clusters and spatial outliers play an important role in the study of the spatial distribution patterns of geochemical data. They characterize the fundamental properties of mineralization processes, the spatial distribution of mineral deposits, and ore element concentrations in mineral districts. In this study, a new method for the study of spatial distribution patterns of multivariate data is proposed based on a combination of robust Mahalanobis distance and local Moran’s Ii. In order to construct the spatial matrix, the Moran’s I spatial correlogram was first used to determine the range. The robust Mahalanobis distances were then computed for an association …

Trace Fossils From Deep Sea Sediments Of The Late Eocene Ceylan Formation, Geli̇bolu Peninsula (Sw Thrace, Turkey), Huriye Demi̇rcan, Alfred Uchman

Bulletin of the Mineral Research and Exploration

In this study, trace fossils of the Ceylan Formation (Late Eocene) in the area NW of Fındıklı village and on the coast of the Ece Bay the Gelibolu Peninsula are identified for the first time. They occur in gray siltstones and mudstones intercalated with thin-bedded, parallel and ripple laminated sandstones, which were deposited on a basin plain in proximilt of a slopes in the Thrace Basin. The Late Eocene Ceylan Formation includes pre-depositionl (Belorhaphe zickzack, Desmograpton isp., Helicolithus ramosus, Helminthorhaphe flexuosa, Paleodictyon majus, Paleodictyon minimum, Paleodictyon strozzii, Saerichnites isp., Urohelminthoida appendiculata) and post-depositional (Phycosiphon incertum, Spongeliomorpha oraviense, Trichichnus isp., Planolites …

Upper Cretaceous-Tertiary Geology/Stratigraphy Of Pertek And Its Vicinity (Tunceli̇, Turkey), Erdal Herece, Şükrü Acar

Bulletin of the Mineral Research and Exploration

The basement units of the studied region are Paleozoic-Mesozoic Keban metamorphic and Upper Cretaceous Elazığ magmatics. As a result of tectonic events caused by final collision in Middle Maastrichtian, all these basement units were juxtaposed, uplifted, eroded and acted as source areas for the Upper Cretaceous-Paleogene basins. Upper Cretaceous-Paleogene units were sampled systematically in order to determine their ages and lithologies. These marine units were identified as Harami, Seske and Kırkgeçit formations based on new age data and their stratigraphic positions. Other units of the study area are Upper Oligocene-Lower Miocene Alibonca formation and Pliyosen Karabakır formation. Harami formation, late …

Investigation Of The Seismic Velocity Distribution And Crustal Structure Of Turkey By Means Of Gravity Data, Uğur Akin

Bulletin of the Mineral Research and Exploration

In this study, the apparent gravity density data was measured for Turkey using apparent density filter, and the seismic velocity distribution map was generated from this data cluster. By interpreting these two measured data clusters, three dimensional structure of the Conrad discontinuity was investigated. The apparent gravity filter is a kind of filter which is used in the apparent gravity measurements for different depth levels different than gravity data. In this study, considering previously measured distribution of the continental crustal thickness of the Anatolia, the density maps for different depth levels were formed and interpreted. The lowest and highest densities …

Geophysical Regional Gravity Maps Of Turkey And Its General Assessment, Selim Arslan

Bulletin of the Mineral Research and Exploration

In this study, the maps generated from the regional gravity data, which had been measured within scope of “Türkiye Rejyonal Gravite Haritaları Projesi” (Regional Gravity Map of Turkey) project were introduced. The topography, Free Air, Bouguer gravity, isostatic residual, isostatic regional, density and crust thickness maps of Turkey in 1/1 500 000 scale were prepared using database which started in 1973 and ended in 2011. The boundaries of the main tectonic members were determined by crust thickness, isostatic residual and Bouguer gravity maps of Turkey. Within this scope, a database that will illuminate the investigation of crustal structure, the development …

Tectonic Deformations In The Quaternary Deposits Of The Lake Van (Edremi̇t Bay), Eastern Anatolia, Turkey, Selim Özalp, B. Serkan Aydemi̇r, Şeyda Olgun, Barbaros Şi̇mşek, Hasan Elmaci, Murat Evren, Ömer Emre, M. Burak Aydin, Oktar Kurtuluş, Füsun Öcal, Aslı Z. Can, Mehmet N. Yanmaz, Ramazan Apa, Tamer Y. Duman

Bulletin of the Mineral Research and Exploration

The 23 October 2011 Van Earthquake (Mw: 7.2) was generated by the Van Fault Zone (VFZ) with reverse fault characteristics. The earthquake on the fault caused surface deformation with 10 cm displacement observed in engineering structures. On land the VFZ has general E-W strike and 28 km length. The western end of the fault is within Lake Van. This study aimed to determine the tectonic structures and evolution in the Quaternary of Edremit Bay using detailed mapping of the VFZ with land and underwater research methods, investigation of its continuation into Lake Van and common assessment of land and underwater …

Mineralogy And Geochemistry Of The Kocadal (Torul, Gümüşhane, Eastern Black Sea Region, Turkey) Zn-Pb-Ag, Au And Cu Mineralizations, Levent Tosun, Ismail Cihan, Ozcan Dumanlilar, Ismet Cengiz, Taner Unlu

Bulletin of the Mineral Research and Exploration

The Kocadal base and precious metal mineralizations are located in the southwest of Gümüşhane province of the eastern Pontide orogenic belt. In the vicinity of the Kocadal mineralization, Gümüşhane granite, lithologies of the Hamurkesen, Berdiga, and Mescitli formations, dacite porphyry and andesite porphyry are present with abundant alluvium. Based on geological, mineralogical, and geochemical features, three mineralization styles have been recognized at the Kocadal area: (i) Mineralizations around Batarya tepe include (ia) Zn mineralization within the conglomerates and sandstones of the Hamurkesen formation and (ib) Zn-Pb-Ag-(Au) mineralization associated with dacite prophyry, (ii) Au mineralization, which occurs to the southwestern of …

Neogene Stratigraphy Of The İzmi̇r -Outer- Bay Islands, Fikret Göktaş

Bulletin of the Mineral Research and Exploration

The volcaniclastics, derived from calcalkaline acidic-intermediate volcanism in the region during late Early Miocene, and lacustrine deposits of Middle Miocene and alkaline volcanics are exposed on Uzun Island, Hekim Island, Çiçek Islands and Karantina Island in the Outer Gulf of Izmir. Kocadağ volcaniclastics derived from Kocadağ volcanism, by extruding mainly calcalkaline andesitic-dacitic products during late Early Miocene, represents the exposed oldest rock unit. The volcaniclastic succession extending in the north of Uzun Island is composed of pyroclastics in ignimbrite and blocky ash flow facies, and epiclastics in volcanic mass flow (lahar) facies. Foça tuff, represented by rhyolitic ignimbrites, originated from …

Ostracods Of The Mediterranean (The Gulf Of Antalya ) And The Aegean Sea (Ayvalik And Kuşadasi) And Their Biogeographical Distributions, Derya Parlak, Atike Nazi̇k

Bulletin of the Mineral Research and Exploration

The aim of this study is taxonomic investigation and environmental distribution of ostracoda association from the deep sediments of the Mediterranean (The Gulf of Antalya) and Aegean Sea (Alibey and Maden islands/ Ayvalık and Kuşadası) and identification of species surviving up to present. Twenty genera and 26 species are determined by examining the ostracoda contents of the 197 samples from the deep sediments from 5 to 30 m depth in the Antalya Bay (Mediterranean). 24 genera and 34 species in 84 samples belonging to 4 cores around Alibey and Maden islands to the north of Ayvalık in Aegean Sea have …