In Southern China, Geologists normally take the volcanic ash bed (with the thickness from 10 to 50 cm) as the boundary for marine Lower and Middle Triassic (i. e. the boundary between Anisian and Olenekian). The volcanic ...

New zircon U-Pb ages are proposed for late Early and Middle Triassic volcanic ash layers from the Luolou and Baifeng formations (northwestern Guangxi, South China). These ages are based on analyses of single, thermally ...

In the French sedimentary basins, widespread alluvial deposits sealing narrow Permian troughs are referred to as 'Buntsandstein'. An Early Triassic age is generally put forward despite a lack of any Scythian biochronological ...

Рассматриваются особенности геологического строения надсолевой толщи с характеристикой типов ловушек, перспективных в нефтегазоносном отношении, обосновано наличие в разрезе триаса возможно продуктивных комплексов - индского ...