塞尔维亚Timok成矿带北段成矿规律及找矿方向

Metallogenic Regularity and Prospecting Direction of the Northern Section of the Timok Metallogenic Belt,Serbia

塞尔维亚Timok地区作为特提斯成矿域西段重要的多金属成矿带,现已发现20余处大型-超大型铜金矿,且近年来在该区陆续有新的找矿发现,显示该区巨大的成矿潜力。本文在近年来Timok成矿带找矿实践的基础上,系统归纳总结了该成矿带北段主要矿床的地质特征及成矿规律。Timok成矿带北段以斑岩型铜金矿、浅成低温热液型铜金矿及矽卡岩型铜金多金属矿床为主,成岩成矿年代主要可分两期,并表现出由东向西矿床形成时代逐渐年轻的趋势。区内已发现矿床(点)主要分布在Ⅳ号高重低磁异常西部梯度带及II号低磁中低重力异常带中。低磁异常主要与研究区广泛分布的褪色蚀变密切相关,高重异常主要与隐伏岩体相关。本文将研究区划分五个主要的找矿远景区,提出进一步找矿主要有两个方向:一是已有大型-超大型矿山及矿床(点)深边部,即“就矿找矿,探边摸底,缺位找矿预测”仍有较大潜力;二是沿区域主要控岩控矿构造如Krivelj、Bor和Lipa等断裂还有较好的找矿潜力。

The Timok copper and gold ore clustering area of Serbia is a crucial polymetallic metallogenic belt in the western segment of Tethys metallogenic domain.More than 20 large and superlarge copper and gold deposits have been discovered,and there are a number of new discoveries in recent years,indicative of a huge metallogenic potential in Timok.On the basis of prospecting practice in the Timok area in recent years,this work systematically summarized the geological characteristics and metallogenic regularity of main deposits in the northern section of the Timok metallogenic belt.There are mainly porphyry copper and gold deposits,epithermal copper and gold deposits,and skarn copper and gold polymetallic deposits in this ore clustering area.The rock-forming and ore-forming ages can be mainly divided into two stages,and the deposits show a gradual younger age from east to west.The deposits(mineral occurrence)discovered in this area are mainly distributed in the western gradient zone of high-gravity low-magnetic anomaly No.Ⅳand low magnetic medium-low gravity anomaly No.II zone.The low magnetic anomaly is mainly related to the fading alteration that is widely distributed in the study area,while the high gravity anomaly is mainly related to concealed intrusive bodies.Five main prospective areas are identified.The further prospecting should mainly focus on two directions,firstly,the deep and marginal areas of existing large-superlarge mines and deposits(mineral occurrence).That is,there is still great potential for“exploring near existing deposit,exploring the margin and basement,and absence prospecting”.Secondly,there is still a big potential in prospecting along the main rock-controlling and ore-controlling structures in the region,like Krivelj,Bor,and Lipa faults.