The stratigraphy of latest Devonian and earliest Carboniferous rocks in Ireland

Graham, John R.; Sevastopulo, George D.

doi:10.1007/s12549-020-00455-y

Cited by 6 publications

(1 citation statement)

References 34 publications

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“…A marine transgression during the Tournaisian (358.9-346.7 Ma), e.g., [56][57][58] coincided broadly with a phase of (N-S) crustal extension that led to basin development in Ireland and Britain [53,59]. Initial rifting during the Tournaisian and early Viséan (346.7-330.9 Ma), was followed by slow subsidence and a phase of tectonic quiescence, facilitating the development of a series of shallow carbonate platforms and intervening intracratonic basins [53,60,61], including the Northwest Carboniferous Basin, which spans most of northwest Ireland (Figure 1a).…”

Section: Paleoenvironment and Geological Setting Of The Mullaghmore S...mentioning

confidence: 99%

Wildfires and Monsoons: Cryptic Drivers for Highly Variable Provenance Signals within a Carboniferous Fluvial System

et al. 2022

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Sediment delivery and supply are explicitly controlled by variations in broad-scale processes such as climate, tectonics and eustasy. These in turn influence fluvial processes and hinterland evolution. A bespoke multi-proxy approach (integrating apatite and zircon U-Pb geochronology, trace elements in apatite, and Pb-in-K-feldspar provenance tools) coupled with outcrop investigation is used to constrain the temporal trends in sediment delivery to channel sandstones of the fluvio-estuarine mid-Viséan Mullaghmore Sandstone Formation, Ireland. Provenance data indicate unique detrital signatures for all sampled horizons, indicating the fluctuating nature of sediment supply to this medium-sized basin. Tectonism and/or abrupt relative sea-level fall likely caused fluvial rejuvenation, resulting in local basement sourcing of the initial fill. Older and more distal sources, such as the Nagssugtoqidian Belt of East Greenland, become more prominent in stratigraphically younger channel sandstones suggesting catchment expansion. Paleoproterozoic to Mesoproterozoic sources are most dominant, yet the detrital grain cargo varies in each channel sandstone. Proximal sources such as the Donegal Batholith and Dalradian Supergroup are variable and appear to switch on and off. These signal shifts are likely the result of channel migration and paleoclimatic fluctuation. A monsoonal climate and large-scale wildfire events (evidenced by fusain) likely contributed to modify plant cover, intensify erosion, and increase run-off and sediment delivery rates from specific areas of the hinterland.

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Section: Paleoenvironment and Geological Setting Of The Mullaghmore S...mentioning

confidence: 99%

Wildfires and Monsoons: Cryptic Drivers for Highly Variable Provenance Signals within a Carboniferous Fluvial System

et al. 2022

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George Demetrius Sevastopulo (1941–2021), palaeontologist and stratigrapher: an appreciation

Jackson

Aretz

2022

PalZ

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The Devonian-Carboniferous Boundary around the globe: a complement

Aretz

Corradini

Denayer

2021

Palaeobio Palaeoenv

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This article compiles data on the Devonian-Carboniferous Boundary successions from countries and regions, which have not been dealt with separately in this special issue. Data derive from different palaeocontinents on a large palaeoclimatic gradient from the southern high latitudes of western Gondwana through the palaeotropics into the temperate/boreal northern latitudes of Siberia. The quality of the data is variable, but often surprisingly good, although major uncertainties can persist and traditional positions of the boundary do not withhold modern stratigraphic results and concepts. Not all these regions have been on the forefront of the DCB discussions in recent years, but they provide invaluable insights into the regional and global dimensions of uppermost Devonian and lowermost Carboniferous changes in the biosphere and geosphere. Almost globally documented are faunal turnovers and collapse of ecosystems in the Hangenberg extinctions. Those allow the placement of the DCB even if index fossils are absent or scarce. However, it also shows the regional differences, which advocate for a holistic approach to the boundary by ensuring global correlation without relying on the conceptual dominance a single taxon, which might be less powerful outside its usual facies.

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The stratigraphy of latest Devonian and earliest Carboniferous rocks in Ireland

Cited by 6 publications

References 34 publications

Wildfires and Monsoons: Cryptic Drivers for Highly Variable Provenance Signals within a Carboniferous Fluvial System

Wildfires and Monsoons: Cryptic Drivers for Highly Variable Provenance Signals within a Carboniferous Fluvial System

George Demetrius Sevastopulo (1941–2021), palaeontologist and stratigrapher: an appreciation

The Devonian-Carboniferous Boundary around the globe: a complement

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