Cambrian stratigraphy of the Tomten-1 drill core, Västergötland, Sweden

摘要: AbstractThe Tomten-1 drilling at Torbjorntorp in Vastergotland, southern Sweden, penetrated 29.85 m of Cambrian Series 2, 3, Furongian, and Lower–Middle Ordovician strata. Lithostratigraphically, the succession includes File Haidar, Borgholm Alum Shale formations, Latorp Lanna limestones. The drill core is described herein for first time, with special focus on biostratigraphy Formation. In through Furongian Formation, agnostoids trilobites have been identified to species level subdivided into nine biozones (in ascending order): Ptychagnostus gibbus, atavus, Lejopyge laevigata, Agnostus pisiformis, Olenus gibbosus, Parabolina spinulosa, Ctenopyge tumida, bisulcata linnarssoni zones. interrupted by numerous stratigraphic gaps variable magnitudes, as evident from conspicuous uncon...