The palynostratigraphy of the Mississippian Birger Johnsonfjellet section, Spitsbergen, Svalbard

Lopes, Gilda; Mangerud, Gunn; Clayton, Geoff

doi:10.1080/01916122.2018.1518849

Cited by 6 publications

(24 citation statements)

References 25 publications

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“…From the Barents Sea area, Bugge et al (1995) and Lopes et al (2016Lopes et al ( , 2018b based their studies on shallow stratigraphic cores (each up to 580 m long). These cores were drilled with diamond bits, and represent a unique research opportunity for the Norwegian Barents Sea region.…”

Section: Palynostratigraphymentioning

confidence: 99%

“…All sites tied by high resolution seismic, enabling correlation to conventional seismic (Rise and Saettem 1994). Lopes et al (2016Lopes et al ( , 2018a published on the Billefjorden Group both from onshore and offshore areas.…”

Section: Palynostratigraphymentioning

confidence: 99%

“…Playford (1962Playford ( , 1963 studied 31 palynological samples in three outcrop sections in Spitsbergen (Citadellet, Triungen, and Birger Johnsonfjellet) and presented a systematic section, including plates, comprising 115 species. He defined two palynological assemblages of Visean age, later discussed and incorporated by Lopes et al (2018a). Lindström (2003) studied a full section of the Billefjorden Group from an exploration well (7120/2-1) on the Loppa High based on conventional core, sidewall core and cuttings samples.…”

Section: Palynostratigraphymentioning

confidence: 99%

“…Scheibner et al (2012) recorded miospore assemblages from outcrops of the Billefjorden Group in northeastern Spitsbergen, indicating a Famennian and Visean to early Serpukhovian age; however, these were poorly documented as no range-chart, quantitative data or plates are provided. Lopes et al (2016) defined four assemblages and two subassemblages from the Billefjorden Group on the Finnmark Platform, Barents Sea, based on shallow stratigraphic cores. The assemblages were correlated to the western European biozonation of Clayton et al (1977) and Clayton (1985) based on taxa abundances and the first and last appearances of selected species.…”

Section: Palynostratigraphymentioning

confidence: 99%

“…From Spitsbergen Lopes et al (2018a) presented palynofloras based on 38 samples from the Hørbyebreen and Mumien formations of the Billefjorden Group. The authors integrated work on the same section by Playford (1962).…”

Section: Palynostratigraphymentioning

confidence: 99%

See 4 more Smart Citations

Carboniferous palynoevents in the circum-Arctic region

Mangerud

Lopas

Bujak³

2021

atgeol

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The Carboniferous of the present-day Arctic yields an abundant and diverse association of terrestrial palynomorphs, particularly from Mississippian successions. Relatively few sections have been studied. However, those published so far demonstrate considerable similarities in the palynofloras between Arctic regions. Based on the published record, we present a compilation of 31 last occurrences (LOs), first occurrences (FOs), and some abundance events that have correlation potential around the Arctic. The chronostratigraphic resolution is relatively low, and the lack of independent age control hampers exact age assignments. But for most of these successions, palynology is the only dating tool available.

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Section: Palynostratigraphymentioning

confidence: 99%

Section: Palynostratigraphymentioning

confidence: 99%

Section: Palynostratigraphymentioning

confidence: 99%

Section: Palynostratigraphymentioning

confidence: 99%

Section: Palynostratigraphymentioning

confidence: 99%

See 3 more Smart Citations

Carboniferous palynoevents in the circum-Arctic region

Mangerud

Lopas

Bujak³

2021

atgeol

Self Cite

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Maiaspora: the hallmark of gleichenioid ferns (Gleicheniales) from the early Carboniferous

Mamontov,

McLean,

Gavrilova

2024

Papers in Palaeontology

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The Palaeozoic origin of gleichenioid ferns (Gleicheniales) has aroused curiosity for almost a century. The oldest definite sign of this ancient clade is the spore wall ultrastructure of Radiitheca dobranyana from the Moscovian of central Europe. However, familial assignment of this fern fossil is uncertain. A comparison of its in situ spores with those of the dispersed genus Maiaspora, from the Visean, suggests that they may represent the same group of leptosporangiates. Although these spores have a common metareticuloid sculpture, the ultra‐thin structure of the dispersed counterparts remained unknown. Study of the ultrastructure of Maiaspora concava and M. panopta from central Russia and Northumberland (UK) using transmission electron microscopy shows that the wall of Maiaspora has a middle exospore layer composed of foliated lamellae. These spread from the base of the aperture slit to the subequatorial margins of kyrtome areas. The lamellae do not overlap the aperture slit and terminate at between two‐thirds and three‐quarters of the slit height. The miospores have a three‐layered exospore in the interradial areas, while non‐apertural parts of the exospore consist of two layers. Such an ultrastructure is shared by extant Gleicheniales and fossil R. dobranyana. The combined evidence from the morphology, ultrastructure and spatiotemporal distribution of Maiaspora, as well as radioisotope dating and additional plant macrofossils, suggests that the origin of the Gleicheniales stem was related to closure of the Rheic Ocean. Apparently, the first Maiaspora‐producing gleichenioids emerged as neoendemic terrestrial ferns on the peri‐Gondwanan volcanic arcs.

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Svalbard Composite Tectono-Sedimentary Element, Barents Sea

Olaussen¹,

Grundvåg

Senger³

et al. 2023

Memoirs

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The Svalbard Composite Tectono-Stratigraphic Element is located on the north-western corner of the Barents Shelf and comprises a Carboniferous to Pleistocene sedimentary succession. Due to Cenozoic uplift the succession is subaerially exposed in the Svalbard archipelago. The oldest parts of the succession consist of Carboniferous to Permian mixed siliciclastic, carbonate and evaporite and spiculitic sediments that developed during multiple phases of extension. The majority of the Mesozoic succession is composed of siliciclastic deposits formed in sag basins and continental platforms. Episodes of Late Jurassic and Early Cretaceous contraction are evident in the eastern part of the archipelago and in nearby offshore areas. Differential uplift related to the opening of the Amerasian Basin and the Cretaceous emplacement of the High Arctic Large Igneous Province created a major hiatus spanning from most of the Late Cretaceous and early Danian throughout the Svalbard Composite Tectono-Stratigraphic Element. The West Spitsbergen Fold and Thrust Belt and the associated foreland basin in central Spitsbergen (Central Tertiary Basin) formed as a response to the Eurekan orogeny and the progressive northward opening of the North Atlantic during the Palaeogene. This event was followed by formation of yet another major hiatus spanning the Oligocene to Pliocene. Multiple reservoir and source rock units are exposed in Svalbard providing analogues to the offshore prolific offshore acreages in southwest Barents Sea and are important for de-risking of plays and prospects. However, the archipelago itself is regarded as high-risk acreage for petroleum exploration. This is due to Palaeogene contraction and late Neogene uplift of particularly the western and central parts. In the east there is an absence of mature source rocks, and the entire region is subjected to strict environmental protection.

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The palynostratigraphy of the Mississippian Birger Johnsonfjellet section, Spitsbergen, Svalbard

Cited by 6 publications

References 25 publications

Carboniferous palynoevents in the circum-Arctic region

Carboniferous palynoevents in the circum-Arctic region

Maiaspora: the hallmark of gleichenioid ferns (Gleicheniales) from the early Carboniferous

Svalbard Composite Tectono-Sedimentary Element, Barents Sea

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