RT Journal Article
T1 Evidencias petrográficas de interacción entre un magma félsico y un nivel sedimentario rico en radiolarios en la Faja Pirítica Ibérica
T1 Petrographic evidences of interaction between a felsic magma and a radiolarian-rich, sedimentary level into the Iberian Pyrite Belt
A1 Donaire Romero, Teodosio
A1 Sáez Ramos, Reinaldo
A1 Pascual Martínez, Emilio
AB In the South Portuguese Zone (Hercynian Iberian Massif), carboniferous volcaniclastic and sedimentary sequences accumulated in a submarine environment were penetrated by subvolcanic intrusions during or shortly after deposition. To the west of El Villar (Huelva), dispersed peperites were produced when a felsic sill underwent quenching, disruption and mingling with wet, unconsolidated sediments. Likely, these phenomena took place during the first stages of the sill emplacement. Subsequently, isolated clasts experienced cooling-contraction fragmentation, releasing shards of quenched rhyolite into the adjacent sediment. Interaction between magma and wet sediment was non-explosive and involved fluidization of the host sediments, creating space for the intruding magma and causing pervasive injection of highly mobile sediment a long thermal contraction and perlitic cracks, both in the felsic sill and clasts
PB Sociedad Geológica de España
YR 1997
FD 1997
LK http://hdl.handle.net/10272/10307
UL http://hdl.handle.net/10272/10307
LA spa
DS Repositorio Institucional de la Universidad de Huelva
RD 31 may 2026