Biostratigraphic correlation within the Triassic Lunde Formation in the Snorre Area

Abstract

The Mesozoic sections of 19 wells in the Snorre area have been correlated biostratigraphically. Ten of the wells penetrated to the middle member of the Triassic Lunde Formation. In each of these wells, nine of which are situated within the Snorre Field, two palynomorph-rich horizons, dated Early Rhaetian and Early Rhaetian-Norian, were recognized. The generally good preservation of the pollen and spores and the presence of freshwater algae point to local deposition within a lacustrine, probably brackish, basin. Recognition of these palynomorph-rich horizons in 10 wells over a relatively wide area suggests that this environment covered most of the Snorre area and adjacent regions during Rhaetian-Norian times. -Author