Sediment-Hosted Gold Deposits in China-Geochemistry and Prospecting  

作　　者：杨蔚华 刘友梅 

出　　处：《Chinese Journal Of Geochemistry》1997年第3期202-212,共11页中国地球化学学报

摘　　要：Sediment-hosted gold deposits are the major type of gold resources in China. Concentrated mostly in the two "Triangle Regons", they are generally hosted in fine-clastic turbidite,hydrothermal chert and marl ranging from Cambrian to Triassic in age, structurally controledby domes, anticlines and second-ordered faults. They are similar to the Carlin-type gold deposits in mineral assemblage and geochemical marks, with an element association closely comparable to those of modern springs and submarine hydrothermal sediments. Organic matter mayhave played an important role in mineralization. The ore solution may be hydrothermally altered meteoric water developed in areas of local geothermal anomaly.Sediment-hosted gold deposits are the major type of gold resources in China. Concentrated mostly in the two 'Triangle Regons', they are generally hosted in fine-clastic turbidite,hydrothermal chert and marl ranging from Cambrian to Triassic in age, structurally controledby domes, anticlines and second-ordered faults. They are similar to the Carlin-type gold deposits in mineral assemblage and geochemical marks, with an element association closely comparable to those of modern springs and submarine hydrothermal sediments. Organic matter mayhave played an important role in mineralization. The ore solution may be hydrothermally altered meteoric water developed in areas of local geothermal anomaly.

关 键 词：沉积型金矿床 地质构造 地球化学 中国 找矿前景 有机地球化学 

分 类 号：P618.51[天文地球—矿床学]