Soma Geophysical Aspects of the Cyprus Geology and Ore Deposits

Abstract

The existance of suhphide ore deposits of Cyprus has been known since the ancient times. These ore deposits are placed within the pillow lavas which make the uppermost sequence of the Upper Cretaceous Troodos Massif, various geophysical methods have been used by many research workers to investigate the general structure of the region and to locate ore bodies. Except the electrical methods, they haven't been successful to locate sulfide ore bodies because the lack of contrast between the ore bodies and the country rocks. The magnetic properties of the pillow lavas which are made of thoeilitic basalts, are considerable. Magnetic anomalies are associated with the pillow lavas where the positive values are given by the thick piles of these volcanic series. There is no direct relationship between the ore deposits and the magnetic anomalies. But there are negative magnetic anomalies over the mineralized zones and the gossans. Also the reason of these negative anomalies may be due to the gabbros or similar intrusives which can be the cause of mineralization.

Keywords

• Cyprus Geology
• Mineral Deposits
• Geophysics

Kıbrıs Jeolojisi ve Maden Yatakları Üzerine Bazı Jeofizik İrdelemeler

Abstract

Kıbrıs'ın sülfürlü cevher yataklarının varlığı eski çağlardan beri bilinmektedir. Bu yataklar, Üst Kretase yaşlı Troodos Masifi' nin en üstünde yer alan yastık lavların içerisinde bulunmaktadır. Maden yataklarını bulma ve bölgenin genel yapısını inceleme amacıyla birçok araştırıcı değişik jeofizik yöntemleri uygulamışlardır. Çevre kayaçlarından fazla bir fiziksel farklılık göstermemelerinden dolayı, sülfürlü yatakları bulmada, elektrik yöntemi dışındakiler başarılı olmamıştır. Toleyitik karakterli bazaltlardan oluşan yastık lavların manyetik özellikleri fazladır. Manyetik anomaliler yastık lavlarla ilişkili olup bu lavların kalınlaştığı yerlerde pozitif değerler verirler. Cevherleşme ile manyetik anomalilerin doğrudan bir ilişkisi yoktur. Fakat cevherli zonlar veya gossanlar (demir şapka) üzerinde negatif manyetik anomaliler yer alır. Ayrıca bu negatif anomalilerin asıl nedeni cevherleşmeyi oluşturan gabro veya benzeri intrüziflerdir.

Keywords

• Kıbrıs Jeolojisi
• Maden Yatakları
• Jeofizik

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