Fig 3 - uploaded by Pierre Giresse
Content may be subject to copyright.
Examples of duricrust (dark red breccias) at outcrop. a-Accumulation horizon lying almost directly above the bedrock (RM) and with a strongly reduced C lithomarge (Castelnou), bLaterally (Castelnou), the lithomarge C can reach 130 cm in thickness. Note the disposition of the duricrust as a protruding bank making it very easy to detach for an eventual exploitation (similar banks are observed in San Quirze and Err), c-Duricrust horizons 30 to 50 cm-thick almost in direct contact with the bedrock (San Quirze of Colera), d-Block of duricrust beside a block of cipolin (bed of the Baillaury River, next to Banyuls), e-Outcrop on a slope of the brecciated duricrust horizon (bank of the ravine of the Baillousque, South of Err).
Source publication
Plusieurs églises romanes de l'Est des Pyrénées (Albères, Aspre, Cerdagne) édifiées sur des terrains schisteux paléozoïques renferment des pierres de construction rouge foncé à structure bréchique et à ciment ferro-siliceux qui n'avaient jamais été signalées à ce jour. Ces pierres furent spécialement choisies à des fins ornementales (encadrements d...
