Thomas Pletsch

TL;DR: In this paper, the authors evaluated the fidelity of a less costly, relatively simple approach of visually assessing sporomorph colours to determine thermal alteration in a succession of mid-Cretaceous (Albian) organic-rich clay- and siltstones intruded by a diabase sill.

TL;DR: In this article, a detailed characterisation of organic matter type and origin as well as determination of thermal maturity have been carried out on siliciclastic and carbonate sedimentary samples from Paleozoic, Mesozoic and Cenozoic outcrops of the New Siberian Islands, eastern Russian Arctic.

TL;DR: The distribution of palygorskite clays in marine sediments is extremely inhomogeneous, both stratigraphically and spatially as discussed by the authors, and they are typically only present in trace amounts but sporadically can even make up the bulk of a sediment.

TL;DR: In this paper, a set of individual studies were undertaken to trace the source of this detritus and to test hypotheses that the material might have been derived, in part, from the east (Iberia), the north (Flemish Cap and northern rift extensions), and/or from various sources to the west (Grand Banks, Interior Newfoundland, Avalon Uplift).

TL;DR: The fluorescent microscope, especially for rock studies, has an integrated light source (1*) as a white LED as discussed by the authors, and an excitation filter (3) can be moved in and out of the light beam path.