New Red Sandstone

New Red Sandstone
Name	New Red Sandstone
Type	Sedimentary unit
Period	Permian–Triassic
Primary lithology	Sandstone, conglomerate
Other lithology	Mudstone, siltstone, evaporite
Region	Britain, Ireland, northwest Europe
Country	United Kingdom, Ireland

New Red Sandstone The New Red Sandstone denotes a suite of Permian to Triassic continental sedimentary strata recognized in the British Isles, northwest Europe, and equivalent basins, notable for red-bed coloration and continental depositional features. It has been central to research by geologists connected with institutions such as the Geological Society of London, the British Geological Survey, and universities including University of Oxford and University of Cambridge; its study intersects fieldwork areas like the Permian Basin (North Sea), and regions studied by figures tied to the Royal Society and the British Museum. The unit has influenced industrial operations associated with quarrying firms and transport networks such as the Great Western Railway and port cities like Bristol.

Definition and Stratigraphy

The term originally separated these red continental beds from the older Old Red Sandstone and younger Mesozoic marine sequences in regional stratigraphic schemes developed by workers linked to the British Association for the Advancement of Science and the Yorkshire Geological Society. Stratigraphically it spans parts of the Permian, Triassic, and locally overlying units correlated with formations studied in the North Sea, Hamberger Basin, and basins explored by petroleum geologists at institutions like Shell plc and BP. It is subdivided into basin-scale units correlating with the Mercia Mudstone Group, Sherwood Sandstone Group, and evaporite-rich horizons comparable to sequences described by staff at the Geological Survey of Denmark and Greenland and the United States Geological Survey. Biostratigraphic constraints come from plant assemblages referenced by researchers at the Natural History Museum, London and palynological work undertaken at the University of Edinburgh.

Geography and Distribution

Exposures occur across England, Wales, Scotland margins, extensive subsurface occurrences beneath the North Sea and in onshore basins such as the Cheshire Basin, East Midlands Shelf, and the West Midlands. Coastal cliffs near Dorset, Devon, and Anglesey show sections that drew attention from travelers associated with the Royal Geographical Society and artists connected to the Pre-Raphaelite Brotherhood. Equivalent red-bed sequences extend into Ireland, the Netherlands, and parts of Germany where basins like the Halle Basin and corridors investigated by the Leibniz Association provide comparative stratigraphy. Correlations with Permian–Triassic sequences in the Himalayas and Karoo Basin have been discussed in international forums including meetings of the International Union of Geological Sciences.

Lithology and Sedimentary Characteristics

Lithologically dominated by feldspathic sandstones, pebbly conglomerates, calcareous siltstones, and mudstones, the suites exhibit cross-bedding, channel fills, and planar lamination recognized by sedimentologists at universities such as University of Leeds and University of Manchester. Evaporite layers including gypsum and anhydrite occur in basins studied by teams from the Max Planck Society and the Swiss Geological Survey, and diagenetic features such as ferruginous cement and authigenic illite have been characterized using techniques refined at Imperial College London and the University of Birmingham. Fluvial architecture includes braided and meandering channel assemblages comparable to descriptions from the Colorado Plateau and Fluvial deposits in the Paraná Basin analyzed by researchers collaborating with ETH Zurich.

Paleoenvironment and Paleoclimate

Depositional environments interpreted include arid to semi-arid continental settings with playa lakes, ephemeral rivers, and alluvial plains, a picture supported by sedimentary structures and paleosol profiles documented by teams at the University of Oxford and the University of Sheffield. Paleoclimatic interpretations link the red beds to Permian aridification events and Triassic climatic fluctuations discussed in syntheses by the Intergovernmental Panel on Climate Change-adjacent paleoclimate research and published in journals such as Nature and Geology, with palaeontological evidence from vertebrate footprints and plant fossils curated at institutions including the Natural History Museum, London and the National Museums Liverpool. Comparisons with continental red-bed provinces like the Sichuan Basin and the San Rafael Group have informed models of paleowind patterns and monsoonal influences investigated by groups at the University of California, Berkeley and the Chinese Academy of Sciences.

Economic Uses and Quarrying

Sandstones and conglomerates have been quarried for building stone and paving by firms operating in cities such as Bristol, Chester, and Nottingham, contributing to architecture exemplified in landmarks associated with the City of London Corporation and historic engineering works tied to the Canal & River Trust. Aggregates from these units supply construction and infrastructure projects linked to contractors like Balfour Beatty and have been evaluated for reservoir potential by energy companies including TotalEnergies and Equinor. Historic quarrying sites investigated by industrial archaeologists at the Ironbridge Gorge Museum Trust and conservationists at the National Trust reveal technologies and transport logistics involving the London and North Western Railway.

History of Study and Nomenclature

Recognition and naming evolved through 19th-century debates among geologists such as participants in meetings of the Geological Society of London and correspondents with curators at the British Museum (Natural History), with later refinement by mapping campaigns undertaken by the British Geological Survey and academic monographs from Cambridge University Press. Key field investigations by figures associated with the Yorkshire Philosophical Society and correspondence networks that included members of the Royal Society shaped the terminology and stratigraphic divisions used in modern geological maps and teaching at institutions like University College London.

Category:Geology of the United Kingdom