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TitleSequence stratigraphy, basin morphology and sea-level history for the Permian Kapp Starostin Formation of Svalbard, Norway
AuthorBond, D; Blomeier, D; Dustira, A; Wignall, P; Collins, D; Goode, T; Groen, R; Buggisch, W; Grasby, S
SourceGeological Magazine 2017, 17 pages, (Open Access)
Alt SeriesEarth Sciences Sector, Contribution Series 20160240
PublisherCambridge Publishing
Mediapaper; on-line; digital
File formatpdf
AreaSvalbard; Norway
Lat/Long WENS 9.0000 21.0000 80.5000 77.5000
Subjectsstratigraphy; facies; facies descriptions; facies analyses; limestones; spicules; cherts; sandstones; siltstones; shales; deposition; extinctions, biotic; Kapp Starostin Formation; Vøringen Member; Gipshuken Formation; Permian
Illustrationslocation maps; geological sketch maps; stratigraphic columns; tables; 3-D models; photographs; cross-sections
ProgramWestern Arctic Sverdrup Basin, GEM2: Geo-mapping for Energy and Minerals
Released2017 01 09
AbstractBased on seven measured sections from Svalbard, the marine strata of the Permian Kapp Starostin Formation are arranged into seven transgressive-regressive sequences (TR1-TR7) of c. 4-5 Ma average duration, each bound by a maximum regressive surface. Facies, including heterozoan-dominated limestones, spiculitic cherts, sandstones, siltstones and shales record deposition within inner, middle and outer shelf areas. The lowermost sequence TR1 comprises most of the basal Vøringen Member, which records a transgression across the Gipshuken Formation following a hiatus of unknown duration. Temperate-cool, storm-dominated facies established in inner to middle shelf areas between the latest Artinskian and Kungurian. Prolonged deepening during sequences TR2 and TR3 was succeeded by a long-term shallowing-upward trend that lasted until the latest Permian (TR4-TR7). A major depocentre existed in central and western Spitsbergen while to the orth, Dickson Land remained a shallow platform, leading to a shallow homoclinal ramp in E Spitsbergen and Nordaustlandet. The Middle Permian extinction (late Capitanian) is ecorded near the base of TR6 in deeper parts of the basin only; elsewhere this sequence is ot recorded. Likewise the youngest sequence, TR7, extending to the upper formational contact of latest Permian age, is found only in the basin depocentre. Comparison with ageequivalent trata in the Sverdrup Basin of Canada reveals a remarkably similar depositional istory, with e.g. two (third-order) sea-level cycles recorded in the Late Permian of both rgions, in keeping with the global record. Sequence stratigraphy may therefore be a powerful correlative tool for onshore and offshore Permian deposits aross NW Pangaea.
Summary(Plain Language Summary, not published)
This study examines new mechanisms for regional correlation of stratigraphy where diagnostic fossils are absent. Authors examined the sequence stratigraphy (history of changes in relative sealevel through time) of sediments deposited in the high arctic regions of Canada and Spitsbergen and were able to show they has identical histories that allows definitive correlation. This new methods helps to improve trans-arctic study in this age range where traditional paleontological methods do not work.