Stratigraphic and spatial distribution of palynomorphs in deep-water turbidites: A meta-data study from the UK central North Sea paleogene

Vieira, Manuel; Jolley, David W.

doi:10.1016/j.marpetgeo.2020.104638

Cited by 16 publications

(9 citation statements)

References 30 publications

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“…Small acanthomorph acritarchs are recovered frequently from tidally influenced fluvial deposits (Jolley et al 2012(Jolley et al , 2021, where they probably tolerated weakly saline water masses. Dinoflagellate cysts have been recorded from a range of normal salinity marine and brackish water environments in the Paleogene (e.g., Bujak et al 1980;Pross & Brinkhuis 2005;Vieira & Jolley 2020), following similar distribution patterns to those of extant species. However, the small size of these palynomorphs means that they behave as silt size sedimentary particles in depositional systems.…”

Section: Palynologymentioning

confidence: 98%

Volcanic landscape controls on pre-rift to syn-rift volcano sedimentary systems: the Prestfjall Formation eruptive hiatus, Faroe Islands Basalt Group, northeast Atlantic

Jolley

Passey²,

Vosgerau

et al. 2022

Earth and Environmental Science Transactions of the Royal Society of Edinburgh

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The Paleogene lava flows of the Faroe Islands Basalt Group are divided into three relatively thick formations. The oldest, the Beinisvørð Formation is separated from the second lava flow succession, the Malinstindur Formation, by two formations composed primarily of volcaniclastic rocks. The oldest of these, the Prestfjall Formation has been interpreted as a period of eruptive quiescence and linked to changes in mantle melting. It is characterised in the south by the occurrence of coals, while the overlying Hvannhagi Formation is a sequence of primary and remobilised volcaniclastic strata. Field, laboratory, palynology, and photogrammetry studies have been used to investigate variations in facies and architecture within these volcaniclastic formations. The data reveal significantly different depositional systems in the Prestfjall and Hvannhagi formations over the ~40 km from the island of Vágar in the north to the island of Suðuroy in the south. Facies distribution in both the Prestfjall and Hvannhagi formations was found to have been controlled by a complex interaction of regional paleoslope, pre-existing topography, the eruption and local collapse of low-angle shield volcanoes, and minor brittle deformation. Lithological data and photogrammetry have enabled the identification of a > 180 m thick succession of volcaniclastic conglomerates deposited by lahars reworking a low-angle shield sector collapse. Co-occurrence of facies characteristic of the Prestfjall, Hvannhagi and Malinstindur formations indicate that volcanic eruption continued at a lower tempo throughout the Prestfjall Formation interval. Identification of a Beinisvørð Formation low-angle volcano shield northwest of the Faroe Islands alters the previous eruption model for this extensive lava field.

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Section: Palynologymentioning

confidence: 98%

Volcanic landscape controls on pre-rift to syn-rift volcano sedimentary systems: the Prestfjall Formation eruptive hiatus, Faroe Islands Basalt Group, northeast Atlantic

Jolley

Passey²,

Vosgerau

et al. 2022

Earth and Environmental Science Transactions of the Royal Society of Edinburgh

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“…In contrast, families typically associated with offshore conditions, such as the Wetzeliellioideae (Frieling and Sluijs, 2018), reveal much more synchronous events. For regional stratigraphy, the diachroneity is of less concern because these events can still be used for regional stratigraphic correlation (e.g., as in Vieira and Jolley, 2020). It does mean that for such species, dinocyst biostratigraphy applies regionally, and caution should be taken to extrapolate event ages far outside of these regions.…”

Section: Geographic Extrapolation Of Dinocyst Eventsmentioning

confidence: 99%

DINOSTRAT: a global database of the stratigraphic and paleolatitudinal distribution of Mesozoic–Cenozoic organic-walled dinoflagellate cysts

Bijl

2022

Earth Syst. Sci. Data

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Abstract. Mesozoic–Cenozoic organic-walled dinoflagellate cyst (dinocyst) biostratigraphy is a crucial tool for relative and numerical age control in complex ancient sedimentary systems. However, stratigraphic ranges of dinocysts are found to be strongly diachronous geographically. A global compilation of state-of-the-art calibrated regional stratigraphic ranges could assist in quantifying regional differences and evaluating underlying causes. For this reason, DINOSTRAT is here introduced – an open-source, iterative, community-fed database intended to house all regional chronostratigraphic calibrations of dinocyst events (https://github.com/bijlpeter83/DINOSTRAT.git, last access: 1 February 2022) (DOI – https://doi.org/10.5281/zenodo.5772616, Bijl, 2021). DINOSTRAT version 1.0 includes >8500 entries of the first and last occurrences (collectively called “events”) of >1900 dinocyst taxa and their absolute ties to the chronostratigraphic timescale of Gradstein et al. (2012). Entries are derived from 199 publications and 188 sedimentary sections. DINOSTRAT interpolates paleolatitudes of regional dinocyst events, allowing evaluation of the paleolatitudinal variability in dinocyst event ages. DINOSTRAT allows for open accessibility and searchability, based on region, age and taxon. This paper presents a selection of the data in DINOSTRAT: (1) the (paleo)latitudinal spread and evolutionary history of modern dinocyst species, (2) the evolutionary patterns and paleolatitudinal spread of dinocyst (sub)families, and (3) a selection of key dinocyst events which are particularly synchronous. Although several dinocysts show – at the resolution of their calibration – quasi-synchronous event ages, in fact many species have remarkable diachroneity. DINOSTRAT provides the data storage approach by which the community can now start to relate diachroneity to (1) inadequate ties to chronostratigraphic timescales, (2) complications in taxonomic concepts, and (3) ocean connectivity and/or the affinities of taxa to environmental conditions.

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“…Lippmann [36] provided petrographic data that represent a transition from Permian and Triassic continental to Jurassic and Palaeocene marine deposits in the North Sea. The climate evolved, with some smaller-scale fluctuations, from arid conditions during Permian and Triassic time [120,121] to higher humidity during Jurassic and Palaeogene time [122,123]. The North Sea study was diagenetic, so the sediment-transport routes were not reconstructed.…”

Section: Case 5-facies Vs Climatementioning

confidence: 99%

Influencing Factors on Petrography Interpretations in Provenance Research—A Case-Study Review

Augustsson

2021

Geosciences

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The use of framework petrography is a common initial step in provenance research of sand and sandstone. The data tend to be interpreted based on the three main components quartz, feldspar, and lithic fragments. Surprisingly often, this is done without taking other influencing factors than the tectonic setting of the catchment and/or the surroundings of the depositional basin into account. Based on a database of 14 studies with approximately 900 petrographic data points from sand and sandstone, this study demonstrates quantitative effects on the apparent composition resulting from both geological and non-geological biases. The study illustrates sandstone-classification differences based on different specifications of the three end-members quartz, feldspar, and lithic or rock fragments, how the point-counting method can affect the apparent petrographic composition of sandstone, how sorting and facies bias may be differentiated from a climate or provenance signal, and how bias due to diagenetic effects can be minimised. In conclusion, both geological and non-geological biases should be considered for provenance studies that include petrographic data.

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Stratigraphic and spatial distribution of palynomorphs in deep-water turbidites: A meta-data study from the UK central North Sea paleogene

Cited by 16 publications

References 30 publications

Volcanic landscape controls on pre-rift to syn-rift volcano sedimentary systems: the Prestfjall Formation eruptive hiatus, Faroe Islands Basalt Group, northeast Atlantic

Volcanic landscape controls on pre-rift to syn-rift volcano sedimentary systems: the Prestfjall Formation eruptive hiatus, Faroe Islands Basalt Group, northeast Atlantic

DINOSTRAT: a global database of the stratigraphic and paleolatitudinal distribution of Mesozoic–Cenozoic organic-walled dinoflagellate cysts

Influencing Factors on Petrography Interpretations in Provenance Research—A Case-Study Review

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