Les roches volcaniques du groupe d’Ediacara de Musgravetown sur la péninsule de Bonavista, terrane d’Avalon, à Terre-Neuve, comprennent des basaltes calcoalcalins basaux d’environ 600 Ma auxquels ont succédé de la tholéiite continentale et de la rhyolite alcaline de la ceinture volcanique d’envir...
The genesis and the physical characteristics of the Neogene red beds of the cedar hills surrounding Thessaloniki are studied in this paper. The peri-urban forest, which covers these hills, has a 3,022 ha area. The topographic relief is smooth and is divided in eight small drainage basins, tapped thr...
New collections of plant macrofossils provide a precise Middle Pennsylvanian age for the lower Wamsutta Formation red beds of the Narragansett Basin, southeastern Massachusetts, USA. The Wamsutta assemblage indicates strong correlation with the Cumberland Group of the Maritimes Provinces of Canada,...
The area around Penobsquis, east of Sussex, New Brunswick, Canada, is an important location of natural resources for the province. The McCully gas field produces from strata of the Mississippian Horton Group whereas younger strata of the Windsor Group are host to major potash and rocksalt deposits....
The continental Maastrichtian formations from Transylvania are notorious mainlyfor bearing peculiar fossils related to an island realm known as the "Hațeg Island". The thick piles of sedimentary rocks accumulated in fluvial environments. The "red beds" are in dominance. However, local peculiar envir...
A spectacular exhibition on Petra, Jordan’s hidden desert city. Petra, capital city of the ancient Nabataean people, is one of the wonders of the ancient world. With its monumental structures, temples, royal tombs and luxurious villas all hewn from the red rock, Petra is among the world’s finest in...
The Early Triassic marine deposits are distributed over a large area in the Western United State and are very rich in ammonoids. The detailed bed by bed study of their stratigraphic distribution allowed us to present a new very precise biochronological framework of the Spathian stage (Middle to Late...
Στην εργασία εξετάζονται τα Νεογενή ερυθροστρώματα των Μουδανιών και Ποτίδαιας Χαλκιδικής για να προσδιοριστούν οι συνθήκες κάτω από τις οποίες σχηματίστηκαν. Είναι χαμηλού βαθμού συνεκτικότητας και φτωχά ταξινομημένα ιζήματα. Γωνιώδη έως υπογωνιώδη θραύσματα πετρωμάτων που προέρχονται από τα γειτον...
Les études de la distribution des minéraux argileux et des structures diagénétiques dans les couches rouges du groupe Athabasca et dans les halos d'altération associés aux gisements d'uranium de type discordance ont permis d'établir les relations étroites entre la diagenèse des couches rouges, l'alt...