CENOZOIC METALLOGENY OF EASTERN MACEDONIA

A new structural basis is proposed for the map of Cenozoic metallogeny of eastern Macedonia. The Cenozoic dislocations are revealed by the i nterpretation of satellite images and the morphological analysis of th e tectonic landforms. These dislocations are superimposed on the ancie nt Serbo-Macedonian Massif and the Mesozoic Vardar rift zone. They for m three northwesterly fault systems that strike at an acute angle to t he Mesozoic Vardar zone and control the distribution of Cenozoic magma tism and Cenozoic sedimentary grabens. These fault systems also define the location of the following Cenozoic metallogenic zones: lead-zinc (Osogovo), copper-lead-zinc (Kratovo-Zletovo), and copper (Borov Dol-S trumica). These zones have various ages ranging from the Late Oligocen e to Miocene. A younger orogenic zone with the Carlin-type gold minera lization is located separately in the south of Macedonia, This zone ha s a transverse direction and is controlled by a system of seismically active northeasterly faults. The ore-concentrating dislocations are re presented by wide longitudinal fault systems with graphite mineralizat ion. They acted as the reducing geochemical barriers, and the large or e fields and districts (Osogovo, Kratovo-Zletovo) are confined to thei r intersection with the northwesterly-directed specialized metallogeni c zones. The northeasterly regional fracturing zones control seismicit y, the location of the youngest metallogenic zone, and the setting of ore fields. The local concentric structures are also important in the ore fields geology. For instance, the two adjacent calderas control th e location of the Kratovo-Zletovo ore district. The proposed structura l zoning opens up new opportunities for forecasting the Cenozoic ore m ineralization in eastern Macedonia, Serbia, and Greece, which have sim ilar geological structures. The stratabound deposits, for example, cou ld be discovered within the Cenozoic basins at the extension of the me tallogenic zones.