Abstract

Abstract Upper Triassic assemblages containing the terebratulid brachiopod Rhaetina gregaria from a shallow, intraplatform carbonate setting of the Fatra Formation are classified according to biofabric, geometry, and internal structure into 6 deposit types, which are interpreted as: (1) autochthonous primary biogenic, (2) autochthonous winnowed or sediment starved, (3) parautochthonous storm-wave, (4) parautochthonous storm wave/flow, (5) amalgamated storm-reworked, and (6) allochthonous (long-term current/wave) deposits. Their distribution on the bed scale correlates with depth-related environmental gradients in regard to the position of fair-weather wave base, average storm wave base, and maximum storm wave base. The biofabric, geometry, and internal structure of brachiopod deposits were predominantly influenced by: (1) storm activity, related to variations in sedimentation rates and water energy; and (2) original variations in composition and spatial distribution of life associations. Fossil assemblage...

Full Text
Published version (Free)

Talk to us

Join us for a 30 min session where you can share your feedback and ask us any queries you have

Schedule a call