RT Journal Article
T1 Anisotropía de la Susceptibilidad Magnética y direcciones de flujo en diques recientes. Complejos volcánicos de las Islas Corvo y Flores (Azores Occidentales, Placa Norteamericana)
T1 Anisotropy of Magnetic Susceptibility and flow directions in recent dykes. Volcanic complex of Corvo and FloresIslands (Western Azores, North-American plate)
A1 Pueyo Anchuela, Óscar
A1 Gil Imaz, Andrés
A1 Lago San José, Marceliano
A1 Zilda, França
A1 Hugo Forjaz, Victor
AB Different models of relation between flow and Anisotropy of Magnetic Susceptibility axis have beenpostulated. The main models link the magnetic foliation with the dyke wall, where the magnetic lineationis parallel to the flow direction or where the magnetic foliation develops an imbrications dispositionrespect the dyke wall. At a first approximation the main differences resides in the turbulence caused bythe dyke walls during the flow. In this work is presented a systematic sampling along different Quaternarydykes (Western Azores) that show both models within the same dykes, differing in the position on it:imbrication models developed in the borders and magnetic lineation parallel to the flow direction in thecenter of the dyke. However, some dykes only show magnetic lineation parallel to the flow without anyimbrication pattern. In these cases the magnetic parameters show the same trends, at different scale,between dykes with only one or two kind of fabrics. The magmatic flow direction, in some cases, can bebetter defined if the dyke is sampled just at the center of it, in contrast with the expected results in theborders which can be influenced by the local irregularities of the flow and the dyke wall
YR 2009
FD 2009
LK http://hdl.handle.net/10272/7956
UL http://hdl.handle.net/10272/7956
LA spa
DS Repositorio Institucional de la Universidad de Huelva
RD 1 jun 2026