Abstract
Sedimentary sulfide ores in the Eastern-Alpine region are interpreted as internal cave deposits, and bedding controlled, ore-bearing breccias as solution-collapse structures effected by mineralizing, hydrothermal solutions. No diagnostic evidence is found for external sedimentation of sulfides on the sea-floor. Vertical distribution pattern of ore structures in Bleiberg which, in ascending order, include: metasomatic ores, mineralized vein breccias and bedding controlled ore breccias, is thought to reflect the rise of mineralizing solutions towards the earth surface. The stratabound solution-collapse breccias are interpreted as shallow-phreatic manifestations of hydrothermal karst processes.
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