A multidisciplinary biofacies characterisation of the Late Triassic (late Carnian–Rhaetian) Kapp Toscana Group on Hopen, Arctic Norway

Paterson, Niall W.; Mangerud, Gunn; Cetean, Claudia G.; Mørk, Atle; Lord, Gareth Steven; Klausen, Tore Grane; Mørkved, Pål Tore

doi:10.1016/j.palaeo.2015.10.035

Cited by 23 publications

(73 citation statements)

References 56 publications

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“…Coal and coal shales found in the De Geerdalen Formation are thin and appear impure, leading to the interpretation that they originate in the lower delta-plain setting, in saline marshes. Thin coal seams with a limited lateral continuity support the relatively dynamic and unstable paralic regime interpreted for the De Geerdalen Formation (Klausen & Mørk, 2014;Rød et al, 2014;Paterson et al, 2016).…”

Section: Figure 5 (A) Distributary Mouth-bar Deposits (Fa 7) Observementioning

confidence: 61%

“…Due to the paralic nature of the Upper Triassic in eastern Svalbard (Mørk et al, 1999a;Klausen & Mørk, 2014;Lord et al, 2014a, b;Paterson & Mangerud, 2015;Paterson et al, 2016; this study), individual facies associations are difficult to correlate laterally over wide areas. To overcome this problem and to ease regional correlation, the facies associations have been grouped into four gross depositional environments (DE).…”

Section: Depositional Environmentsmentioning

confidence: 88%

“…6 It should be noted that despite well constrained palynological dating for most of the lithostratigraphic units in the Triassic succession of Svalbard (e.g., Vigran et al, 2014;Paterson & Mangerud, 2015;Paterson et al, 2016), the middle Carnian unit is poorly constrained and the present assignment should therefore be considered subjective. The middle Carnian age assignment is based entirely on indirect stratigraphic relationships between the middle Carnian unit, the underlying early Carnian Tschermakfjellet Formation and the overlying Isfjorden Member (late Carnian to early Norian).…”

Section: Stratigraphic Distribution and Correlation Of Depositional Ementioning

confidence: 99%

“…These relatively thick parasequence units can be seen throughout much of the remaining part of the middle Carnian, where delta-front and delta-plain facies interfinger with shallow-marine deposits throughout the study area. The De Geerdalen Formation is largely described as paralic (Klausen & Mørk, 2014;Lord et al, 2014a, b;Rød et al, 2014;Paterson et al, 2016) and this is reflected in the highly variable lateral distribution of facies and depositional environments.…”

Section: Palaeogeographic Developmentmentioning

confidence: 99%

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Facies development of the Upper Triassic succession on Barentsøya, Wilhelmøya and NE Spitsbergen, Svalbard

Lord¹,

Johansen²,

Støen³

et al. 2017

NJG

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Field data collected from the northeasternmost Triassic exposures on the islands of Spitsbergen, Wilhelmøya and Barentsøya during 2015 are used for sedimentological facies analysis to improve our understanding of the stratigraphic development of the Upper Triassic strata. Results presented here build upon previous studies from the eastern areas of the Svalbard archipelago and seek to extend this understanding northward. Paralic deltaic sediments are recognised throughout the field area, and our analysis shows that the Upper Triassic De Geerdalen Formation is composed of three discrete units defined by the differences in gross depositional environments. The lower interval of early Carnian age is dominated by shallow-marine and delta-front/ shoreface deposits, the middle interval of mid Carnian age is dominated by delta-front to delta-top deposits, and the upper interval, corresponding to the Isfjorden Member, of a late Carnian to early Norian age, is dominated by delta-top deposits which include lagoonal and lacustrine deposits. These observations show that the De Geerdalen Formation represents a more distal depositional setting, than the depositional environments previously reported from the islands of Edgeøya and Hopen. We also document the presence of the Tschermakfjellet Formation and Isfjorden Member on Wilhelmøya, thus increasing our understanding of the northwestward development of the Upper Triassic succession in Svalbard.

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Section: Figure 5 (A) Distributary Mouth-bar Deposits (Fa 7) Observementioning

confidence: 61%

Section: Depositional Environmentsmentioning

confidence: 88%

Section: Stratigraphic Distribution and Correlation Of Depositional Ementioning

confidence: 99%

Section: Palaeogeographic Developmentmentioning

confidence: 99%

See 2 more Smart Citations

Facies development of the Upper Triassic succession on Barentsøya, Wilhelmøya and NE Spitsbergen, Svalbard

Lord¹,

Johansen²,

Støen³

et al. 2017

NJG

Self Cite

View full text Add to dashboard Cite

show abstract

“…We continue into the Upper Triassic successions of Hopen Island, Svalbard (Paterson et al, 2016), an island well known for preserving fossil biota (Strullu-Derrien et al, 2012). New palaeoenvironmental interpretations based on a broad range of microfossils, including pollen, spores, dinoflagellates, foraminifera, radiolarians and ostracods are presented.…”

Section: The Triassicmentioning

confidence: 99%

Mesozoic ecosystems – climate and biotas

Vajda

Pole

Sha

2016

Palaeogeography, Palaeoclimatology, Palaeoecology

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Multi‐elemental chemostratigraphy of Triassic mudstones in eastern Svalbard: Implications for source rock formation in front of the World’s largest delta plain

Wesenlund

Grundvåg

Engelschiøn

et al. 2022

The Depositional Record

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The Triassic Boreal Ocean was a shallow epicontinental basin and the sink of the World's largest delta plain known to date. Nutrient and freshwater supply from this delta have been regarded as important causes for high productivity and water mass stratification, forming Middle Triassic oil‐prone source rocks. Recent studies attribute upwelling and a productivity‐induced oxygen minimum zone as important factors. A multi‐elemental chemostratigraphic study of a Spathian–Carnian mudstone succession exposed in eastern Svalbard was performed to investigate their formation. This includes 89 samples from three localities, from which 34 elements were acquired using combustion and X‐ray fluorescence analyses. The goal is to provide a correlation framework and infer the role of productivity, redox and water mass restriction on organic matter accumulation and source rock formation. These processes had major impact on the source potential. The Spathian Vendomdalen Member suggests deposition during intermittent benthic euxinia and low productivity, corresponding with a reported deep thermocline that obstructed upwelling. The lower Anisian lower–middle Muen Member shows negligible enrichment in redox‐sensitive elements but in situ phosphate nodules, consistent with developing upwelling and moderate productivity. The middle Anisian upper Muen Member formed during high productivity and phosphogenesis and is linked with basin‐wide upwelling. Productivity, phosphate and redox proxies are all strongly enriched in the upper Anisian–Ladinian Blanknuten Member. In the south‐western Barents Sea, the pro‐deltaic environment of the emerging Triassic Boreal Ocean delta system had terminated these conditions. The upper Ladinian upper Blanknuten Member formed within intermittent euxinic bottom waters due to the shallowing sea level. The Carnian Tschermakfjellet Formation marks the dominance of the prograding delta system and the end of Triassic oil‐prone source rock formation in Svalbard.

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A multidisciplinary biofacies characterisation of the Late Triassic (late Carnian–Rhaetian) Kapp Toscana Group on Hopen, Arctic Norway

Cited by 23 publications

References 56 publications

Facies development of the Upper Triassic succession on Barentsøya, Wilhelmøya and NE Spitsbergen, Svalbard

Facies development of the Upper Triassic succession on Barentsøya, Wilhelmøya and NE Spitsbergen, Svalbard

Mesozoic ecosystems – climate and biotas

Multi‐elemental chemostratigraphy of Triassic mudstones in eastern Svalbard: Implications for source rock formation in front of the World’s largest delta plain

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