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Mostrando ítems 1-10 de 21
Presencia de pirofilita en reemplazamientos de conchas de espiriféridos (Brachiopoda) del Devónico de la zona centroibérica. (Macizo Hespérico, España)
(Universidade da Coruña, 1995)
[Abstract] Amacroscopic pyrophyllite bearing mineralization related to shells ofspiriferids
has beeen found in the Herrera Formation (southern Central-Iberian Zone, Hesperic Massif, Spain). The observed mineral asociation ...
El stock de Santa Elena (Jaén): una intrusión genéticamente independiente de la asociación magmática del batolito de Los Pedroches
(Universidade da Coruña, 1995)
[Abstract] The Santa Elena stock has been classically considered as belonging to the magmatic association ofthe Los Pedroches Batolith. The stock is intrusive into psammo-pelitic materials Ordovician to Carboniferousin ...
Geoquímica comparada de depósitos de turberas altas (tremedales de los Montes Universales, Teruel) y de turberas bajas (Marjales de la depresión Valencia-Castellón)
(Universidade da Coruña, 1995)
[Abstract] A comparative geochemical study of peat deposits from bog and marsh (with
marine influence) deposits has been performed. The bog is located in Tremedal Mountains (Teruel, Iberian Range, Spain) and the marsh in ...
Composición e implicaciones barométricas de los anfíboles en el Complejo Plutónico de la Maladeta (Pirineos Centrales, Huesca-Lérida)
(Universidade da Coruña, 1995)
[Abstract] The composition of the amphiboles in basic rocks (gabbros and diorites), granodiorites, monzogranites with minor amphibole and mafic microgranular enclaves from the Maladetta massif, corresponds to calcic terms ...
Programación lineal continua de una cantera de pizarra
(Universidade da Coruña, 1995)
[Abstract] A new exploitation of roofing slate has several possibilities of marketing
depending on the sizes of the pieces that it makes. Three sizes has been chosen
among aH the possibilities in base of the conditions ...
Pruebas morfológicas y estructurales sobre el origen de las fracturas de descamación
(Universidade da Coruña, 1995)
[Abstract] Sheet fractures are well and widely developed in massive rocks, i.e., rocks lacking other partings, and they have been discussed in the literature for more than a century. Yet there is no agreement as to their ...
O Cuaternario do Maciço Hespérico em Portugal. Problemas do seu Estudo Geológico e Geomorfológico
(Universidade da Coruña, 1995)
The major problem in studying the Quaternary in the Hesperian Massif in
Portugal is unquestionably posed by the scarcity ofdeposits, faunas and floras,
which makes it difficult to establish a more or less accurate ...
Emplazamiento, Petrología y Geoquímica del Complejo Volcano-Clástico de Orea (Guadalajara, Cadena Ibérica Occidental)
(Universidade da Coruña, 1995)
[Abstract] The volcanoclastic outcrop ofOrea (south margin of the Iberian Chain) reflects a pluriepisodic igneous activity, expressed in agglomerates and tuffs ofdacitic composition (with a calc-alkaline affinity) and ...
Bornhardts, Bouldes and Inselbergs
(Universidade da Coruña, 1995)
[Abstract] Bornhardts are steep-sided domical hills. The profiles are associated with sheet
fractures, and their plan form with steeply dipping fractures of orthogonal or rhomboidal systems. They are well developed in ...
Lithologic and climatic convergence in granite morphology
(Universidade da Coruña, 1995)
[Abstract] The major and minor forms eommon to granite (and related erystalline lithologies) and to daeite, sandstone and limestone are listed and briefly deseribed. Faetors eondueive to lithologie eonvergenee (the development ...