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Öğe Biga Yarımadasında Jeodeğerler ve Jeoturizm Potansiyeli(TMMOB Jeoloji Muhendisleri Odasi, 2018) Çalık, Ayten; Kapan, Sevinç; Erenoğlu, Ramazan Cüneyt; Erenoğlu, Oya; Yaşar, Cumali; Ulugergerli, Emin UğurIt is summarized what needs to be done and to be able to utilise three structurally different geological formations within the Canakkale province as geo-parks or geovalue that can attract geologically important and interestingtosocieties. As examples, hot water springs of Tuzla geothermalarea, ancient granite columns of Kestanbolu-Yahya Cavusvillage and opal pit of Yenice village are taken as examples. It is also emphasized that besides the areas highlighted, all other possible areas have their own specific conditions and that ignoring these conditions may cause permanent damages to the area. Earth science museum are also important institutions that will contribute to the discovery and introduction of these fields. As a way of preserving areas that are both scientific and tourist attraction, we have also listed our views on the importance of opening up and exploring to public and the negativity of this activity. According to the first results, while the Tuzla Geothermal field could be used with a few simple arrangements but Kestanbol and Yahya Cavus villages could not be used for the purpose of geotourism with its current state of the fields.Öğe Çanakkale Boğazı, Özbek Denizel Sekisi Oluşum Yaşı için ESR Tekniği ile bir Ön Değerlendirme(2020) Komut, Tolga; Kapan, SevinçÇalışmamızda incelediğimiz Özbek denizel sekisi deniz kıyısından 4 km içeride olup Çanakkale boğazı civa rında, tespit edilen diğer denizel sekilere nispetle en yüksekte olanıdır. Marmara kıyılarında da yaygın olarak görülen denizel sekilerin oluşmasına sebebiyet veren düşey hareketlerin Marmara bölgesinin tektoniğini ve ayrıca boğazların oluşumunu anlamak açısından anahtar bilgiler barındırdığı düşünülmektedir. Sekide Geç Pleistosendeki Akdeniz ko şullarını temsil eden bol miktarda Ostrea edulis kavkıları tanımlanmıştır. Seki ESR tarihlendirme tekniği ile 16.2 ± 1.8 ka olarak tarihlendirilmiştir. O devirdeki küresel deniz seviyesi dikkate alındığında sekinin günümüze kadar top lamda yaklaşık olarak 250 metre kadar yükseldiği anlaşılmaktadır. Çanakkale Boğazının Akdeniz ile Marmara bağ lantısını sağladığından beri bölgenin jeodinamik olaylarla yükseldiği ve bu süreçte boğaz tabanının derine kazıldığı düşünülmektedir. Tarihlendirme sonucuna göre bölgenin çok geniş bir sahaya yayılan batı Anadolu’nun yükselmesi olayı ile bağlantılı olarak yükselmiş olabileceği fikri öne çıkmıştır. Varlığı yeni verilerle artarak desteklenen yer ka buğunun altındaki astenosferin yukarı yönlü akımının etkileri, araştırma alanının içinde olduğu geniş bir bölgenin yükselmesine sebep olur. Bu yükselmenin deniz kıyısında oluşan denizel fosilli birimleri bölgeyle beraber yükseklere taşıyıp denizel sekilerin gelişimine sebebiyet verdiği düşünülmektedir. Diğer taraftan, seki birimleri çok ileri derecede mangan’ca kirlenmiş olduğundan numunelerin analizinde sorunlar vardır. Tarihlendirmeye tâbi tutulan numune sayı sının çokluğu güvenilirliğin denetlenmesi bakımından bir gerek-sinim olmakla beraber haklarında yok denecek kadar az bilgi bulunan bölgedeki yüksek sekilere dair edindiğimiz ön nitelikteki tarihlendirme sonuçları bölgenin geçmişin deki jeodinamik olaylar hakkında, bölgedeki diğer yer-bilimsel verilerle tutarlı bir model kurulabilmesini sağlamıştır.Öğe Late Quaternary paleoclimatic and paleoenvironmental changes in the Konya Closed Basin (Konya, Turkey) recorded by geochemical proxies from lacustrine sediments(Springer Science and Business Media Deutschland GmbH, 2021) Orhan, Hükmü; Delikan, Arif; Demir, Ahmet; Kapan, Sevinç; Olgun, KemalThe Konya Closed Basin is an important basin in central Turkey, in terms of its geographic position, Quaternary infills, and well-preserved archeological sites. It comprises Quaternary lake marls and other, mainly fine grained, sediments with locally in excess of 400 m. Geochemical data for samples taken from the 7-m-deep Adakale trench from the late Quaternary lacustrine sediments in the Konya Closed Basin are presented and have been used as proxies to elucidate the past climatic changes, weathering regime, redox conditions, and productivity. Climate changes observed in the studied samples for last 50,000 years were represented by oscillations in weathering processes, detrital input, redox conditions, water levels, and paleoproductivity. Geochemical data show that three periods of high detrital input (high Si+Al+K+Ti+Fe, high Ti/Al, Rb/Sr, low Ca and low Si/Ti), four periods of anoxic conditions (low Mn and Th/U and high Ni/Co, Mo/Al and V/Cr), and four periods of higher productivity (high Cu/Al, Ni/Al, Ca/Al, Ba/Al Si/Ti and Ca/Ti) were effective in the study area. These periods are corresponding to climatic changes during last glacial periods, the warm climate of Dansgaard-Oeschger (D/O) events (D/O 2-12) and the cold climate of Heinrich events (H 2-5).Öğe Paleogene stratigraphy and mollusca fauna of northern part of the Biga Peninsula: Fiçitepe formation between Lapseki-Şevketiye, Çanakkale(International Multidisciplinary Scientific Geoconference, 2016) Gürsoy, Birben; Kapan, SevinçIn this work, it is planned that to rearrange the Paleogene stratigraphy of the study area and interpret paleogeographic and paleoecological properties of the Paleogene sediments are exposed northeastern part of the Biga Peninsula (Fıçıtepe Formation and Danişmen Formation) by using the data obtained from gastropoda-bivalvia fauna. Eleven measured stratigraphic sections were taken from sedimentary rocks which are outcroped in the study field. According to lithostratigraphic and biostratigraphic correlation of these sections, it was determined the stratigraphic positon of the investigation area. Systematic sampling was also carried out during the stratigraphic section measurement. It is identified that; 11 genus, 10 species from the samples are belonging to Fçıtepe Formation. According to the stratigraphic level and paleogeographic distribution of the fauna, Fıçıtepe Formation’s age is found as Late Eocene. Identified fauna represent that the shallow marine brackish water envorinment during the Late Eocene. At the same time, 36 genera, 34 species have been identified belonging to Danişmen Formation which unconformably overlying on Fıçıtepe Formation. In the light of these fauna, the age of Danişmen Formation is found as Late Oligocene and interpreted that warm, shallow, sublitoral and brackish water conditions were dominant. © SGEM2016.Öğe Ponto-caspian and mediterranean faunal and floral records of upper pleistocene-holocene sediments from the Izmit Gulf (Marmara Sea, Turkey)(Romanian Society of Palaeontologists, 2021) Kırcı-Elmas, Elmas; Nazik, Atike; Kapan, Sevinç; Meriç, Engin; Zor, Emine Şeker; Kalkan, Beste; Doǧan, Tamer; Güney, Ayşegülİzmit Gulf is located between Kocaeli and Armutlu peninsulas at east of Marmara Sea and the interaction area of North Anatolian Fault Zone (NAFZ) and Marmara Graben systems. In this study, the faunal and floral contents (ostracod, foraminifer, mollusc and diatom) of the samples belonging to seven drilling cores were studied and obtained the radiocarbon and optically stimulated luminescence (OSL) age data in order to establish on the Black Sea – Marmara Sea - Mediterranean water connections and palaeoenvironmental changes. The sediments in this study are Late Pleistocene-Holocene aged and only cover the Marine Isotope Stages MIS-5 (interglacial), MIS-3 (an interstadial period between MIS-4 and MIS-2 glacial epochs) and MIS-1. The determination of ostracod and mollusc fauna of the Mediterranean and Ponto-Caspian origin provide important clues to water exchange between the Mediterranean and the Black Sea. Although some Mediterranean originated ostracods occur sporadically with low abundance, absence of foraminiferal fauna and existence of Ponto-Caspian ostracods together with fresh water and cosmopolitan diatom flora indicate that the area strongly interacted with the Black Sea waters during MIS-5. The faunal and floral characteristics of the sediments deposited during MIS-3, clearly denote that the Izmit Gulf was connected with the Black Sea and the Mediterranean Sea at the beginning of MIS-3 (ca. 52.0 - 40.0 ky BP) and the shallow shelf areas were frequently affected by both the Black Sea discharge and Mediterranean input. A thick Holocene sedimentary sequence recovered from the southern Hersek Burnu drilling cores reflects the environmental changes after the latest Black-Mediterranean seas connection. The studied ostracod and mollusc assemblages are mainly characterized by the Mediterranean originated species with a few relict Ponto-Caspian fauna. Also, the benthic foraminiferal assemblages are dominated by normal marine and euryhaline species, reflecting the salinity fluctuations in the Holocene interval.
