Lake-mire deposition, earthquakes and wildfires along a basin margin fault; Rønne Graben, Middle Jurassic, Denmark

Nielsen, Lars Henrik; Petersen, Henrik I.; Dybkjær, Karen; Surlyk, Finn

doi:10.1016/j.palaeo.2010.03.032

Cited by 21 publications

(10 citation statements)

References 49 publications

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“…MB-1 and MB-2 micro-biofacies appear to be absent at Cloughton Wyke. The higher levels of charcoalified woody debris recorded indicate proximity to wildfire events similar to those described for the Bagå peat-mires of Bornholm (Nielsen et al 2010).…”

Section: Yons Nabsupporting

confidence: 70%

Megaspores and associated palynofloras of Middle Jurassic fluvio-deltaic sequences in North Yorkshire and the northern North Sea: a biofacies-based approach to palaeoenvironmental analysis and modelling

Morris¹,

Batten

2016

Journal of Micropalaeontology

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Outcrops of the Early Bajocian, Gristhorpe Member (Ravenscar Group) in North Yorkshire have been subjected to a multi-disciplinary analysis which establishes a key reference section at Yons Nab. Eight micro-biofaces types (MBs) are defined based on counts of transitional marine microfaunas, megaspores and plant-derived debris. Associated palynofloral associations (PAs) are used to qualify the micro-biofacies defined to provide an integrated model for interpreting salinity-freshwater trends associated with deltaic progradation and retreat. Megaspore and small-spore trends within the delta-plain are shown to have been closely linked to peat-mires forming in topographic lows, with variations across the delta-plain attributable to the presence of the semi-permanent and seasonal water tables. A reconstruction of the floodplain-peat-mire depositional setting is proposed where the composition of host vegetation (e.g. ferns, lycopsids) varied in relation to groundwater levels. Biostratigraphic correlation within the Gristhorpe Member is attempted using the base of 'established' delta-plain deposition (megaspore dominant MBs/ spore-dominant PAs) and the top and base agglutinated foraminifera-dominant MBs (brackish). Using these criteria the Gristhorpe Member is modelled in terms of a southward progradation of delta-plain facies into a bay-fill sequence, which persisted at Yons Nab. With the delta-plain established, the MB/PA trends and sedimentology suggest a northward shift towards the higher delta-plain, with seasonal standing water only. The MB/PA model was tested on core samples from the coeval lower Brent Group from northern North Sea well 34/10-B-12 (Gullfaks Field); MB/PA trends are shown to compare closely with those of the Gristhorpe Member at Yons Nab, with the same megaspore/small-spore associations developed within similar lithofacies. On this basis transitional marine, bay-fill and delta-plain deposition are defined in the cored section. These comparative data suggest that the dispersal of megaspore and miospore host floras occurred effectively across the Mid North Sea High, and that they colonized the same niche habitats associated with bay-fill and delta-plain development.

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Section: Yons Nabsupporting

confidence: 70%

Megaspores and associated palynofloras of Middle Jurassic fluvio-deltaic sequences in North Yorkshire and the northern North Sea: a biofacies-based approach to palaeoenvironmental analysis and modelling

Morris¹,

Batten

2016

Journal of Micropalaeontology

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“…McKellar (2004, table 1) describes the climate as being warm to warm temperate. However, a similar flora was described from the Middle Jurassic of Denmark that was at c. 40°N (Nielsen et al 2010).…”

Section: Depositional Environment Implications From Biostratigraphysupporting

confidence: 58%

“…It is suggested that this may be due to natural oxidative processes or wildfires, not geothermal activity (wildfires in a similar environment were reported by Nielsen et al 2010). For a detailed discussion on the issue of the oxidation of plant material, see Diessel & Gammidge (1998).…”

Section: Biostratigraphical Sample Preparation and Data Collectionmentioning

confidence: 92%

“…This interpretation is based upon: (1) low numbers of 'coalified' wood fragments Balme (1995), Barrón et al (2006), Dettmann et al (1992), Frederiksen (1992), Grant-Mackie et al (2000), Hubbard & Boulter (1997), Jansson (2006), McKellar (1996 and Nielsen et al (2010). Its occurrence in the other centres rapidly decreases.…”

Section: Depositional Environment Implications From Biostratigraphymentioning

confidence: 99%

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Sedimentology and stratigraphy of an intra-cratonic basin coal seam gas play: Walloon Subgroup of the Surat Basin, eastern Australia

Martin

Wakefield

Macphail

et al. 2013

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Large gas reserves are trapped in the coals of the Middle Jurassic (Callovian) Walloon Subgroup (lower part of the Injure Creek Group) in the Surat Basin, eastern Australia. The series is divided into the Juandah Coal Measures (upper), Tangalooma Sandstone and Taroom Coal Measures (lower).The upper and lower units are locally further subdivided. These economically important coals were deposited in an alluvial plain setting within an interior basin, which has no recorded contemporaneous marine influence. The coals are typically bituminous, perhydrous and low rank with a high volatile content. Despite individual ply (bench) thicknesses typically less than a metre, series of plies or seams of coals up to 10 m thick have historically been tentatively correlated across the entire play area (over 150 km). 2011-043r esearch-articleArticle19X10.1144/petgeo2011-043M. A. MartinWalloon Subgroup sedimentology and stratigraphy

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“…A few Middle Jurassic assemblages from the Russian Platform (Dobrutskaja 1968;Rostovtseva 2013Rostovtseva , 2014 have also been taken into account. According to Rostovtseva (2013), Middle Jurassic palynological assemblages of the Moscow region are very similar to palynofloras reported by Nielsen et al (2010) from Bornholm (Denmark), thus a comparison with the northwestern European palynozonation may be warranted. The palynological age assessment reported herein uses cumulative maximum and minimum ages for the assemblages, coupled with additional restrictions based on abundance data for some taxa, and/or the lack of taxa otherwise indicative of a certain age according to the literature.…”

Section: Re-evaluation Of Previously Published Palynologymentioning

confidence: 84%

An Early Jurassic age for the Puchezh‐Katunki impact structure (Russia) based on⁴⁰Ar/³⁹Ar data and palynology

Holm‐Alwmark

Alwmark

Ferrière

et al. 2019

Meteorit & Planetary Scien

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The Puchezh‐Katunki impact structure, 40–80 km in diameter, located ~400 km northeast of Moscow (Russia), has a poorly constrained age between ~164 and 203 Ma (most commonly quoted as 167 ± 3 Ma). Due to its relatively large size, the Puchezh‐Katunki structure has been a prime candidate for discussions on the link between hypervelocity impacts and extinction events. Here, we present new 40Ar/39Ar data from step‐heating analysis of five impact melt rock samples that allow us to significantly improve the age range for the formation of the Puchezh‐Katunki impact structure to 192–196 Ma. Our results also show that there is not necessarily a simple relationship between the observed petrographic features of an impact melt rock sample and the obtained 40Ar/39Ar age spectra and inverse isochrons. Furthermore, a new palynological investigation of the postimpact crater lake sediments supports an age significantly older than quoted in the literature, i.e., in the interval late Sinemurian to early Pliensbachian, in accordance with the new radioisotopic age estimate presented here. The new age range of the structure is currently the most reliable age estimate of the Puchezh‐Katunki impact event.

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Lake-mire deposition, earthquakes and wildfires along a basin margin fault; Rønne Graben, Middle Jurassic, Denmark

Cited by 21 publications

References 49 publications

Megaspores and associated palynofloras of Middle Jurassic fluvio-deltaic sequences in North Yorkshire and the northern North Sea: a biofacies-based approach to palaeoenvironmental analysis and modelling

Megaspores and associated palynofloras of Middle Jurassic fluvio-deltaic sequences in North Yorkshire and the northern North Sea: a biofacies-based approach to palaeoenvironmental analysis and modelling

Sedimentology and stratigraphy of an intra-cratonic basin coal seam gas play: Walloon Subgroup of the Surat Basin, eastern Australia

An Early Jurassic age for the Puchezh‐Katunki impact structure (Russia) based on⁴⁰Ar/³⁹Ar data and palynology

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Lake-mire deposition, earthquakes and wildfires along a basin margin fault; Rønne Graben, Middle Jurassic, Denmark

Cited by 21 publications

References 49 publications

Megaspores and associated palynofloras of Middle Jurassic fluvio-deltaic sequences in North Yorkshire and the northern North Sea: a biofacies-based approach to palaeoenvironmental analysis and modelling

Megaspores and associated palynofloras of Middle Jurassic fluvio-deltaic sequences in North Yorkshire and the northern North Sea: a biofacies-based approach to palaeoenvironmental analysis and modelling

Sedimentology and stratigraphy of an intra-cratonic basin coal seam gas play: Walloon Subgroup of the Surat Basin, eastern Australia

An Early Jurassic age for the Puchezh‐Katunki impact structure (Russia) based on40Ar/39Ar data and palynology

Contact Info

Product

Resources

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An Early Jurassic age for the Puchezh‐Katunki impact structure (Russia) based on⁴⁰Ar/³⁹Ar data and palynology