Upper Ordovician through lowermost Silurian stratigraphy and facies of the Borenshult-1 core, Östergötland, Sweden
The Ordovician is an important period in the Phanerozoic, with remarkable faunal turnovers, several major carbon isotope excursions, and shifting climate. The strata of this time period not only re-veal these events but also provide useful information about the palaeoclimate and sea-level. The Boren-shult-1 core form Östergötland, southern Sweden constitutes a complete succession of the upper Midd