Basinal brines and groundwaters as possible metal carriers in the formation of sandstone-hosted lead-zinc deposits
✍ Scribed by K. Schrijver
- Publisher
- Springer
- Year
- 1992
- Tongue
- English
- Weight
- 618 KB
- Volume
- 27
- Category
- Article
- ISSN
- 0026-4598
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✦ Synopsis
Features of the two best-documented worldclass sandstone-hosted Pb-Zn deposits (Laisvall, Sweden; Yava, Nova Scotia, Canada) and a few similar but smaller deposits (SE Missouri, Quebec Appalachians) are compared with the purpose of contributing to the debate on the problem of the aqueous medium of metal transport: basinal brines or groundwaters? For the dolostonesandstone-hosted deposits in SE Missouri, it is concluded that basinal brines formed this medium in both host rocks. The paleotopographic control of these Missouri deposits is pronounced and leads to the conclusion that such control is insufficient evidence to establish the groundwater hypothesis for the Yava deposit. In the Quebec Appalachian deposits, basinal brines, expelled tectonically, were the most likely metal carriers; these deposits constitute an ore type that differs from other known sandstone-hosted lead deposits.