Results 41 to 50 of about 6,109 (226)
Geochronology and detrital zircons sources from the Sierra Albarrana Domain (SW Iberian Massif)
This study compiles the U-Pb and 40Ar/39Ar geochronology of the metasedimentary, migmatitic and granitic rocks of the Sierra Albarrana Domain, based on data recently published by the authors together with other bibliographic sources.
Byron Solis Alulima +4 more
doaj +1 more source
The Geology as an indispensable tool for optimizing the exploration of dimension Stones [PDF]
Like any Geological Resource, the Dimension Stones can only be exploited where they occur. How they occur is a reflection of geological history that presided over its formation.
Lopes, Luís
core
The Material Basis of 18th‐Century Meissen Porcelain
ABSTRACT In the summer of 1708, the quest for making hard‐paste porcelain from Saxonian clay and other mineral resources succeeded. This was achieved by applying as its essential ingredient newly discovered pure kaolin from Heidelsberg near Aue, western Saxon Ore Mountains.
Robert B. Heimann
wiley +1 more source
Variscan and Alpine structure of the hills of Barcelona: geology in an urban area [PDF]
Line 9 of the underground railway is currently being constructed in Barcelona. This undertaking necessitates tunnelling through a number of hills that are mainly made up of Paleozoic rocks, which exhibit a complex structure due to the superposition of ...
Casas Tuset, Josep Maria +5 more
core +1 more source
Vertical profiling of shock attenuation at the Rochechouart impact structure, France
Abstract Rochechouart, south‐west France, is a complex impact structure. Here, we present the first report of shock barometry of quartz from what are likely parautochthonous basement units at depth, based on samples from the 2017 C.I.R.I.R drilling campaign. The crystallographic orientations of 725 sets of PDFs in 512 quartz grains in samples from four
P. Struzynska +4 more
wiley +1 more source
Abstract The paleomagnetism of Miocene calc‐alkaline volcanics and sediments from Sardinia has firmly showed that the Corsica‐Sardinia microplate rotated 50°–60° counterclockwise (CCW) with respect to Europe between 21 and 15 Ma, during its drift from the Provencal margin. However, Permian to Eocene rocks from central‐south Sardinia revealed higher (up
Gaia Siravo +3 more
wiley +1 more source
Relations of the hydrothermal mineralisation to the structures in the Rudòany ore field [PDF]
In the area of the Rudòany ore field (NE part of Spisko gemerské Ore Mts, Slovakia) the hydrothermal vein mineralisation is connected with cleavage planes, faults and with host - rocks boundaries.
Sasvári Tibor
doaj
A geological fence diagram for England and Wales [PDF]
This report contains a brief description of the data and methodology used to compile the National Geological Fence Diagram (NGFD). The NGFD comprises a network of intersecting geological cross-sections covering England and Wales, to a minimum depth of
Ambrose, K. +7 more
core
New magnetotelluric data through the boundary between the Ossa Morena and Centroiberian Zones [PDF]
The south-western part of the Iberian Peninsula, including the southern branch of the Iberian Massif, has recently been the subject of several magnetotelluric (MT) studies.
Almeida, E. +5 more
core +4 more sources
ABSTRACT This study investigates garnet–clinopyroxene double‐layered coronae in a metagabbronorite from the high‐grade metamorphic Gföhl Unit (Bohemian Massif). The coronae formed at the interfaces between relic magmatic orthopyroxene, still preserved in the cores of the coronae, and the plagioclase‐rich rock matrix.
Rene Asenbaum +5 more
wiley +1 more source

