Abstract Triassic strata in the Greater Barents Sea Basin are important records of geodynamic activity surrounding catchments and sediment transport Arctic basins. This study is first attempt to investigate evolution these source areas through time. Our analysis budgets from subsurface data application BQART approach estimate catchment properties shows that (1) during Lower Triassic, supply was...

Eocicadellium grimaldii gen. et sp. nov., the oldest representative and first Triassic member of subfamily Karajassinae Shcherbakov, 1992, is described on basis six forewings from Middle-Upper Yanchang Formation northern China, widening duration biogeographic distribution this extinct subfamily. The new data represents known definite record in further explores palaeodiversity archijassids.

the sorkh shale formation (lower triassic) crops out in parts of tabas block. this formation is composed of limestone, dolomite, sandstone, shale and gypsum. its lower contact with the permian rocks and its upper contact with the shotori formation is marked by distinct erosional unconformity. to determine the depositional environments of the sorkh shale formation, stratigraphic sections of goda...

Four volcanic-ash beds bracket the Early-Middle Triassic boundary, as defined by conodont biostratigraphy, in a stratigraphic section in south China. High-precision U-Pb dates of single zircons allow us to place the Early to Middle Triassic (Olenekian-Anisian) boundary at 247.2 Ma. Magnetic-reversal stratigraphy allows global correlation. The new dates constrain the Early Triassic interval char...

High-resolution carbon isotope measurements of multiple stratigraphic sections in south China demonstrate that the pronounced carbon isotopic excursion at the Permian-Triassic boundary was not an isolated event but the first in a series of large fluctuations that continued throughout the Early Triassic before ending abruptly early in the Middle Triassic. The unusual behavior of the carbon cycle...

Croatian bauxites are long known for their chemical and physical diversity arisen from characteristic origin emplacement within the area of Adriatic–Dinaric carbonate platform (ADCP). They include eight horizons spanning period between Upper Triassic (Carnian) Miocene, formed on subaerially exposed paleoenvironments. The bauxite genesis is recorded in geochemical composition as a unique signatu...

Although the status of Crinoidea (sea lilies and featherstars) as sister group to all other living echinoderms is well-established, relationships among crinoids, particularly extant forms, are debated. All living species are currently placed in Articulata, which is generally accepted as the only crinoid group to survive the Permian-Triassic extinction event. Recent classifications have recogniz...

Carbon isotopic studies from marine organic matter of the Permian-Triassic Maitai Group, New Zealand, reveal a significant 5Corg shift toward more negative values within the Little Ben Sandstone Formation. These isotopic data chemostratigraphically define the previously debated position of the Permian-Triassic boundary in the Maitai Group. The Permian-Triassic record of the Maitai Group is also...