Zobrazeno 1 - 10
of 26
pro vyhledávání: '"Léon Dejonghe"'
Autor:
Eric Pirard, Hassan Bouzahzah, Sophie Verheyden, Séverine Papier, Jean-Marc Baele, Léon Dejonghe, Christian Burlet, Guy Franceschi, Sophie Decrée
Publikováno v:
Geologica Belgica. 24:125-136
Laser-Induced Breakdown Spectroscopy (LIBS) is a fast in-situ analytical technique based on spectroscopic analysis of atomic emission in laser-induced plasmas. Geochemical mapping at macroscopic scale using LIBS was applied to a decimetric Zn-Pb ore
Publikováno v:
Geologica Belgica. 20:33-42
1. Introduction The Grand-Duchy of Luxembourg is divided into two main geographical regions, the Eisleck (Oesling in German) to the north (32% of the area) and the Guttland to the south (68% of the area). They correspond to two main geological provin
Publikováno v:
Ore Geology Reviews. 33:187-210
The Belgian nonsulfide Zn deposits represent the historical basis for the zinc mining and smelting industry in Europe. The zinc ores were called "calamines" and consist of a mixture of Zn carbonates (smithsonite, hydrozincite) and Zn silicates (hemim
Publikováno v:
Episodes. 30:63-68
Autor:
Pierre Bultynck, Léon Dejonghe
Publikováno v:
Geologica Belgica, 4
This contribution briefly describes seventy Devonian formations from the Dinant and Namur Synclinoria, the Vesdre Nappe and the Theux Window, that were revised or introduced during the previous two decades. The descriptions of the formations are orga
Autor:
James S. Scoates, Philippe Muchez, Léon Dejonghe, Guillermo Hughes, Dominique Weis, Benoît Darras
Publikováno v:
Mineralium Deposita. 37:158-172
The lead isotope compositions of galena and the fluid-inclusion systematics of nine barite-bearing polymetallic (Au, Ag, Pb, Zn) deposits of the central Argentinian Patagonia (Chubut and Rio Negro provinces) have been investigated to constrain the co
Publikováno v:
Tectonophysics. 309:161-177
The ramp-flat thrust model and other classical models based on Rocky ountains or Appalachians structures allow a better understanding of ault and fold interaction in a sequence dominated by competent rocks, n which, in most cases, thrusts propagate f
Publikováno v:
Geologische Rundschau. 87:373-380
The geochemical evolution of the fluids migra- ting at the Variscan thrust front in eastern Belgium has been investigated by a petrographic, mineralogical and geoche-mical study of ankerite, quartz and ferroan calcite veins hosted by lower Devonian r
Autor:
Léon Dejonghe
Publikováno v:
Ore Geology Reviews. 12:329-354
The exploitation of Belgian zinc–lead deposits dates back to prehistoric times. Its apogee was between 1850 and 1870 and the last mine was closed in 1946. During the period 1837–1945, during which time production levels were recorded, the tonnage
Publikováno v:
Chemical Geology. 144:63-71
Anhydrite and calcite pseudomorphs after anhydrite from Palaeozoic formations in Belgium have been analysed for their Sr isotope compositions. All Givetian (3 samples: ∼0.7080) and Visean (6 samples: ∼0.7076) anhydrites have 87 Sr/ 86 Sr ratios c