Hydrothermal activity within a sedimentary succession: aragonites as indicators of Mesozoic Rifting (Iberian Basin, Spain).

MJ Herrero, R Marfil, JI Escavy, M Scherer… - International Geology …, 2020 - Taylor & Francis
Pseudo-hexagonal aragonite crystals occur profusely at various locations within the Upper
Triassic sequences in Europe, America and Africa. In the Spanish Iberian Basin, they are
associated with corrensite and gypsum, which characterize saline mudflat and salt-pond
facies. Similarly, shaped crystals occur as dolomite, quartz, chalcedony or even copper
pseudomorphs after aragonite in several parts of North and South America, and they are
currently forming in association with hydrothermal spring deposits in Kenya. In Spain, this …

Hydrothermal activity within a sedimentary succession: aragonites as indicators of Mesozoic Rifting (Iberian Basin, Spain)

MJ Herrero Fernández, R Marfil, JI Escavy Fernández… - 2020 - docta.ucm.es
… Similarly, shaped crystals occur as dolomite, quartz, chalcedony or even copper
pseudomorphs after aragonite in several parts of North and South America, and they are
currently forming in association with hydrothermal spring deposits in Kenya. In Spain, this
aragonite was first described at Molina de Aragón (Spain). Its origin has previously been
explained as resulting from burial diagenetic processes, although petrographical,
geochemical, stable isotope, and fluid inclusion evidence suggest a formation in other …
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