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Filtering by: Publisher Global-Science Press, Cambridge University Press Creator Haggerty, R.

Pb-isotope evidence on the origin of the West Shropsh orefield, England

Creator:

Haggerty, R., Rohl, B. M., Budd, P. D., and Gale, N. H.

Abstract:

Pb-isotope data on ore galenas from the West Shropshire orefield show a significant spread of ²⁰⁶pb/²⁰⁴pb values, with minor variation in ²⁰⁷Pb/²⁰⁴Pb and ²⁰⁸Pb/²⁰⁴Pb ratios. These indicate that lead was derived from multiple sources, some of them uranium-enriched and incompletely mixed prior to ore deposition. Four possible mineralizing agents are...

Resource Type:

Article
The genesis of the Llanrwst and Llanfair veinfields, North Wales: evidence from fluid inclusions and stable isotopes

Creator:

Haggerty, R. and Bottrell, S. H.

Abstract:

The Llanrwst Pb–Zn veinfield occupies fractures in an Ordovician volcano-sedimentary sequence, with three separate mineralizing events (M₁, M₂ and M₃). The Llanfair Pb–Zn–Cu veinfield consists of sporadic mineralization in Silurian sediments. Fluid inclusion data from both veinfields indicate mineralization took place from CaCl₂-bearing brines, up to 26 wt % NaCl...

Resource Type:

Article

Full Text:

inclusion Geol. Mag. 134 (2), 1997, pp. 249–260. Copyright © 1997 Cambridge University Press 249 The