Zobrazeno 1 - 10
of 18
pro vyhledávání: '"J M, González López"'
Publikováno v:
Estudios Geologicos, Vol 46, Iss 1-2, Pp 65-69 (1990)
Se ha seleccionado el Sector Central de la Depresión del Ebro para tratar de conocer la incidencia que la diagénesis tiene sobre la asociación mineralógica primaria, considerada fundamentalmente compuesta por minerales heredados. En este contexto
Externí odkaz:
https://doaj.org/article/07f11792a34b4fd98e7837d6865642ad
Publikováno v:
Clay Minerals. 43:459-475
The kaolinite from Albian sedimentary deposits (Escucha and Utrillas Formations) of the Iberian Range (Spain) have been investigated. This research has shown the presence of different types of kaolinites (detrital and diagenetic) along with micaceous
Publikováno v:
Clay Minerals. 40:565-580
Mineralogical and geochemical techniques have been used to determine the role of minerals in controlling the trace element composition of a set of clay-sized fractions from Albian siliciclastic rocks in NE Spain. These clay-sized fractions are compos
Publikováno v:
Clay Minerals. 39:333-344
This study uses transmission electron microscopy (TEM) and analytical electron microscopy (AEM) supported by X-ray diffraction (XRD) and scanning electron microscopy (SEM) to investigate the mineralogical and textural changes produced in carbonated c
Publikováno v:
Economic Geology. 98:1413-1426
The Mg-Fe carbonate deposits of Sierra Menera, underneath exploited goethite gossan, are located in the Iberian Range of northeasten Spain within the Late Ordovician dolomitic formation of the Sierra Menera unit. MgO and FeO contents of the carbonate
Publikováno v:
Clay Minerals. 35:365-374
Smectites of sedimentary series from a playa lake system from Calatayud Basin have been studied by XRD and TEM chemical microanalyses. Clay particle microanalyses show complete continuity between dioctahedral aluminous and trioctahedral magnesian sme
Publikováno v:
Geologie en Mijnbouw. 78:87-102
Mineralogical, textural and geochemical investigations were made to determine the post-depositional evolution of Devonian and Early Carboniferous carbonates from Valle de Tena. The carbonate association is made up of low-Mg calcite, which occurs as m
Publikováno v:
Clay Minerals. 33:373-393
Cambrian and Ordovician pelites and greywakes from the Iberian Range were studied using XRD, EMPA and AEM/TEM techniques, lllite and chlorite are the main phases in Cambrian M1 is almost the only polytype; they do not have expandable layers, and they
Publikováno v:
Clay Minerals. 30:395-406
The Tertiary sediments of the southern part of Almazán basin (Province of Soria) exhibit two different facies with a sharp transition between them: (1) a coarse detrital facies; and (2) a lutite and carbonate facies. The vertical evolution of these
Publikováno v:
Clay Minerals. 30:381-394
Two profiles in Devonian marine deposits have been studied, consisting of pelites, subgreywackes, greywackes and quartzites. Quartz and clay minerals are major components and feldspar and calcite are minor ones. Phyllosilicates in the fine fractions