2001/01/01 by Atle Mørk, Mork, A., Smelror, M.
Earth and Planetary Sciences · Engineering · #Geological Studies and Exploration #Geological and Geochemical Analysis #Hydrocarbon exploration and reservoir analysis #Science
paper · pdf · doi:10.2312/polarforschung.69.65
openalex publication_date 2001/01/01 · openalex created_date 2025/10/10 · openalex updated_date 2026/07/15
The Barents Shelf and the East Greenland Margin: A Comparison Summary: Eighty-two higher-order (1st, 2nd and 3rd order) sequence boundaries have been recognised from detailed studies of the Mesozoic succession of the Barents Shelf (including Svalbard), East Siberia and the Sverdrup Basin.Most of the Triassie sequence boundaries are synchronous throughout the study area, while, half of the Jurassie boundaries are synchronous, and only two sequence boundaries from the Cretaceous appear to be synchronous throughout the Arctic.The duration of third order sequences varies from I to II Ma in the Triassic, 2 to 16 Ma in the Jurassie and 2 to 21 Ma in the Cretaceous, while the duration of second order sequences varies between 3 and 14 Ma in the Triassic, 10 and 36 Ma in the Jurassie and 7 and 52 Ma in the Cretaceous.This sequence pattern deviates from the conceptual definitions of the Exxon School, where time is used as a criterion for assigning sequences to different orders.The synchronieity of most of the sequence boundaries in the Triassie supports ?eustatic control as a major factor in the formation of these sequences.The decreasing synchronieity of these sequence boundaries through the Jurassie and Cretaceous suggests an increasing degree of tectonic control on deposition, culminating in the break-up of the Pangea supercontinent.