Magnetostratigraphy of the uppermost Triassic and lowermost Jurassic Moenave Formation, western United States: Correlation with strata in the United Kingdom, Morocco, Turkey, Italy, and eastern United States

摘要: A composite magnetostratigraphy based on the magnetic polarity data from four sections of uppermost Triassic and lowermost Jurassic Moenave Formation, Utah Arizona, USA, can be correlated to marine successions at Saint Audrie9s Bay (UK), Oyuklu, Turkey, Southern Alps, Italy, nonmarine in Morocco, northern Africa, Newark Basin, eastern North America, all deposited across Triassic–Jurassic boundary. Our proposed correlation provides a stratigraphic framework tie sedimentation American Southwest UK, Italy sections, Pangea rift history, including extrusive igneous rocks, preserved Morocco Basin. The record is characterized by mostly normal polarity, as consistent with other records boundary, interrupted least two well-defined reverse-polarity magnetozones. On basis available paleontologic information, we interpret oldest well-defined, magnetozone, M2r correlate SA5n.2r or SA5n.3r record, H– Oyuklu BIT5n.1r Italcementi Quarry reverse magnetozone sedimentary rocks E23r youngest M3r, latest magnetozones SA5n.5r J– interval "intermediate unit" record. Magnetostratigraphic correlations biostratigraphic information support placement boundary middle upper Whitmore Point Member Lias Group section, chert-rich limestone above Zu Limestone central Atlantic magmatic provinc zone records.