Keele University
Earth Sciences and Geography
The Neoproterozoic was characterized by an extreme glaciation, but until now there has been no consensus as to whether it was a complete glaciation (snowball Earth) or a less severe glaciation (slushball Earth). We performed sensitivity... more
Of the several vein types with elongate crystals, we distinguish a class of veins with well-developed fibres, exposed at Oppaminda Creek (South Australia). These calcite veins are characterised by very limited competition between growing... more
Extremophile microbes are currently known to inhabit the surface and upper kilometres of the Earth's crust. Although deep microbial life may date back to the beginning of life on Earth, fossil evidence for deep life remains virtually... more
Keywords: atmospheric oxygen; charcoal; Late Triassic; palaeo-wildfire; permineralization; SW Germany Abstract So far only very few reports deal with Triassic (especially macro- or mesofossil) charcoal in detail. Here we present... more
Silicified schwagerinids (superfamily Fusulinoidea v. Moeller 1878) from the Upper Carboniferous (Carnic Alps, Austria and Italy) were isolated from cemented carbonate rocks using hydrochloric acid. The shells show details of the wall... more
ABSTRACT. Galeate acritarchs are a major component of Late Cambrian and Early Ordovician palynological assemblages. The populations of galeate acritarchs from the Cambrian–Ordovician transition section in borehole Nl-2 of the Algerian... more
Abstract The Black Forest (southwestern Germany) comprises two phyllite-bearing low-grade metasedimentary units, which are separated by the Central Schwarzwald Gneiss Complex. Both zones have been subjected to palynological... more
Abstract The metasediments of the low-grade metamorphosed Baden-Baden–Gaggenau zone of the northern Schwarzwald (southwestern Germany) have been analyzed palynologically. From 133 samples representing different metasedimentary units,... more
In the northern Schwarzwald (Moldanubian Zone of the Variscan belt), paragneisses drilled from approximately 2500 m depth at the Bühl-1 drilling site have experienced amphibolite-facies metamorphism and were later partly transformed to... more
Abstract Shallow-water carbonates from the Lower Permian of Sonora, northwest Mexico, have yielded small organic-walled microfossils that show several features characteristic of inoflagellates. The oldest unequivocal dinoflagellate... more
The metasediments of the low-grade metamorphosed Baden-Baden–Gaggenau zone of the northern Schwarzwald (southwestern Germany) have been analyzed palynologically. From 133 samples representing different metasedimentary units, only three... more
The Black Forest (southwestern Germany) comprises two phyllite-bearing low-grade metasedimentary units, which are separated by the Central Schwarzwald Gneiss Complex. Both zones have been subjected to palynological investigation. In the... more
Abstract. - Within the Mid-European Variscan Belt, Heterocorallia have been described from the Rhenohercynian, the Saxothuringian and the Upper Austro-Alpine. A section from the Early Carboniferous of the Moldanubian Southern Vosges... more
Abstract: The acritarchs are considered to form the oldest marine organisms with an eukaryotic cell organization. They are of great biostratigraphic, palaeoecological and palaeo-biogeographic importance for the Precambrian and Early... more
The metabolism of a variety of microbes is known to induce the precipitation of minerals, in particular calcite and opaline silica. This can, for example, be observed in hot springs, such as those in Yellowstone and Waikiki. Water-filled... more
Keywords: hyperthermophiles, fibrous veins, microbes, archaea Extremophile microbes are known to currently inhabit the surface and upper kilometres of the Earth’s crust. Although deep microbial life may date back to the beginning of life... more