Morfología de la pirita diagenética en sedimentos recientes del estuario del Río Odiel (SO de España).

Borrego, J. ^[1] ; Monterde, J. ^[1] ; Morales, J.A. ^[1] ; Carro, B. ^[1] ; López, N. ^[1]
1. [1] Universidad de Huelva
  
  Universidad de Huelva
  
  Huelva, España
Localización: Geogaceta, ISSN 0213-683X, Nº. 33, 2002, págs. 99-102
Idioma: español
Títulos paralelos:
- Early Diagenetic Pyrite Morphology in Recent Sediments of the Odiel River Estuary (South-West Spain).
Enlaces
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Resumen
- Diagenetic sulphurs have been observed in subsurficial sediments from Odiel River Estuary. These sulfurs display three distinct morphologies: microcrystal aggregates, framboidal aggregates and euhedral pyrite macrocrystals. The genesis of these pyrite morphologies occurs in non-strictly-anoxic environments with a continuous sulphate and iron support where the bacterial activity induces a fast nucleation and growth of microcrystals. These optimal environmental conditions present in the Odiel estuary al/ow an accelerated evolution from framboidal morphologies to euhedral macrocristals during early diagenetic stages.