Abstract We present a ? 13 C carb chemostratigraphy for the Late Ordovician Hirnantian Stage based on 208 whole-rock samples from six outcrops in Oslo–Asker district, southern Norway. Our data include Norwegian type section and Ordovician–Silurian boundary at Hovedøya Island. The most complete record of Isotope Carbon Excursion (HICE) is identified coastal exposure Konglungø locality where pres...

Abstract The formation of divergent plate boundaries involves the opening continental basins and uplift margins accompanied by seawater ingression reorganization surface groundwater drainage systems. These processes drive water‐rock reactions, resulting in deposition epigenetic minerals country rock adjacent to boundary. Here, we study isotopic geochemical record dolomite ferric‐oxide that occu...

The influence of organic additives, β-cyclodextrin, HEDTA, L-aspartic acid and L-glutamic acid on crystal growth of calcium carbonate via vapour diffusion method has been investigated. In the absence of additive, regular rhombohedral calcium carbonate crystal habit resulted. Whereas in presence of additive, calcite with truncated, aggregated rhombohedral sub crystals and elongated hexagonal mor...

The stratigraphic architecture of Early Jurassic strata exposed along a >10 km long transect in the Chachil Graben, an exhumed marine rift depocentre Neuquén Basin (Argentina), provides insights into sedimentological and expression syn-rift to post-rift transition. A change from intrabasinal carbonate extrabasinal siliciclastic sedimentation is recorded, as well variations sediment supply dispe...

The Bolesław-Bukowno mining area in Poland is highly polluted by elements such as Zn, Pb, Cd and As. The reactivity and mobility of toxic elements such as Tl are poorly known. Here, we studied by sequential extraction the mobility of As, Cd, Co, Cr, Cu, Mn, Mo, Pb, Tl and Zn in sediments from two water reservoirs near Bukowno. Results show that available As, Co, Mn, Pb and Zn are found in carbo...