The rock record contains a rich variety of sedimentary surface textures on siliciclastic
sandstone, siltstone and mudstone bedding planes. In recent years, an increasing number …

Abstract The lower Middle Cambrian of Scandinavia is reviewed and subjected to sequence
stratigraphical analysis. Sequences are defined as transgressive–regressive depositional …

The organic carbon-and uranium-rich, marine Alum Shale Formation in northwestern
Europe (Middle Cambrian (Miaolingian) to Early Ordovician) was deposited in the Baltic …

The essential role of the fine mineral fraction in V hyper-enrichment in black shales has
been suggested in previous studies; however,'the operational details' of such metallogenic …

Trace element and Os isotope data for Lisburne Group metalliferous black shales of Middle
Mississippian (early Chesterian) age in the Brooks Range of northern Alaska suggest that …

This paper investigates the hyper-enrichments of molybdenum (Mo), uranium (U), and
vanadium (V) in the lower Paleozoic, Alum Shale of Denmark, Sweden, Norway, and …

To date, microbialites include five groups: stromatolites, thrombolites, leiolites, and
dendrolites. All these microbialites occur in carbonate or silica lithologies. However …

The Avalonia microcontinent has diagnostic terminal Ediacaran–Ordovician
lithostratigraphy, depositional sequence architecture, and igneous activity that extends for …

Abstract The Tremadocian (Early Ordovician) is currently considered a time span of
greenhouse conditions with tropical water surface temperature estimates, interpolated from …

To resolve the controversy of iron sulfide effect on hydrocarbon generation of kerogen, a
confined anhydrous pyrolysis experiment was performed on an Alum kerogen before and …