Category: United Kingdom

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A tectonic history of Britain (Part 4): A quiet crust with a long memory – tectonic inheritance in the modern British landscape

Modern Britain lies far from active plate boundaries. It has no active volcanoes and experiences only minor earthquakes, and is often described as tectonically quiet. Yet its landscape is anything but passive. Hills and lowlands, coastlines and drainage patterns all reflect a deep structural inheritance established during earlier phases of continental collision, collapse and rifting.

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Book review: In Search of Sea Dragons: A Fossil Hunter’s Odyssey, by Matthew Myerscough

Matthew Myerscough’s In Search of Sea Dragons: A Fossil Hunter’s Odyssey begins not with fossils, but with survival. Early in the book, Myerscough recounts how he and his future wife narrowly escaped death in an avalanche on Snowdon. The experience casts a long shadow over everything that follows. What initially appears to be a book about fossil hunting, gradually reveals itself as something rather more personal: a memoir about recovery, obsession, friendship and the strange hold that collecting can exert over people.

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A tectonic history of Britain (Part 3): Britain breaks apart – rifting, volcanoes and the birth of the Atlantic

By the end of the Carboniferous, Britain had already passed through more than one major phase of mountain building, each followed by long periods of erosion and structural collapse. The Caledonian mountains were long eroded, and the Variscan belt of southern Britain was entering its final stages of decay. Yet tectonic influence did not fade away. Instead, the dominant regime changed. Britain was no longer being compressed – it was being stretched.

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A tectonic history of Britain (Part 2): When mountains fall – collapse, basins and the foundations of Britain’s lowlands

The collision that assembled Britain at the end of the Silurian (see A history of the plate tectonics of Britain (part 1): Britain assembled – oceans, collisions and the making of a geological patchwork) did not mark the end of tectonic influence on the landscape. Instead, it marked the beginning of a new phase – one that is often less intuitively grasped, but just as important. Mountain belts are temporary features. Once continental collision ceases, thickened crust becomes gravitationally unstable. Erosion strips material from the surface, while extension and faulting affect the deep roots of the orogen. The geological record that follows is not one of rising peaks, but of collapse, subsidence and redistribution.

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A tectonic history of Britain (Part 1): Britain assembled – oceans, collisions and the making of a geological patchwork

Britain is often described as geologically quiet. There are no active volcanoes, no subduction zones, and only modest earthquakes. Yet, for its size, few countries display such a concentration of geological variety. Mountain uplands, volcanic terrains, deeply folded rocks, and ancient metamorphic cores all occur within a relatively small area. The explanation for this diversity lies not in Britain’s present tectonic setting, but in a long and complex tectonic history that assembled the country piece by piece from fragments that originated far apart.

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Book review: A Field Guide to Collecting British Cenozoic Fossils, by Steve Snowball and Alister Cruickshanks

Books devoted specifically to collecting Britain’s Cenozoic fossils are surprisingly rare. While collectors are well served by guides to the country’s Palaeozoic and Mesozoic fossils, the younger deposits that record the last 66 million years of Earth history have received far less attention. A Field Guide to Collecting British Cenozoic Fossils aims to address that gap by providing a practical introduction to the fossils and collecting sites associated with these deposits.

England Fossils Geology History & biographies Palaeontology

The death of the Upper Greensand: A stratigraphic obituary for a vanished formation

For much of the twentieth century, generations of students (and amateurs like me) learned a tidy, mid-Cretaceous succession for southern England:

Lower Greensand – Gault Clay – Upper Greensand – Chalk.

It appeared in every textbook, diagram and museum panel. There was an appealing symmetry to the sequence, with two sands bracketing the impervious Gault and the Chalk resting neatly above. It seemed so natural that few doubted it.

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Volcanoes, monsoons and a flooded supercontinent (Part 1): The climate engine of the Carnian Pluvial Event

This is the first of three articles on the Carnian Pluvial Event (CPE), often referred to as an ‘event’, although increasingly recognised as a prolonged episode, as I will discuss) of the Triassic that seems to have grown in importance and interest, and only become more widely known in relatively recent times. In this article, I will introduce the topic, concentrating on what might be called the “climate engine” driving what was happening.

England Geology Glaciers Plate Tectonics

A pebble across Deep Time: From Staffordshire to Budleigh Salterton and back again

I found the pebble almost by accident, while staying with friends near Eccleshall in Staffordshire. We had taken their two dogs (the much missed Holly and Chutney) out for an afternoon walk – the kind of slow, stop-start loop where the dogs dictate the pace and the conversation meanders as much as the footpath. Along a muddy stretch of track, something smooth and rounded caught my eye: a faintly banded, reddish stone lying half-buried among the usual Midlands gravel and mud.

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The weird and wonderful of the Ediacaran Period (Part 2): Charniodiscus – a frond in the quiet depths of the Ediacaran seas

Jon Trevelyan (UK) This is the second of my series of short articles on fossils of the Ediacaran Period. Charniodiscus is one of the most characteristic frondose organisms of the Ediacaran Period, living around 560-555 million years ago in the quiet, low-energy seafloors that preceded the Cambrian explosion. With its … Read More

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Book review: The Southern Pennines, by John Collinson and Roy Rosen (Classic Geology in Europe 13)

The Classic Geology in Europe series has, over many years, established a distinctive and reliable identity: authoritative regional syntheses written by specialists, designed for geologists who want to understand landscapes through field observation rather than armchair generalities. The Southern Pennines sits comfortably within that tradition and, in several respects, exemplifies the mature strengths of the series.

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Book review: GeoHibernica: The Irish Landscapes, Peoples and Cultures, by Paul Lyle

Paul Lyle begins GeoHibernica with a slightly mischievous acknowledgement: the book exists only because the author of GeoBritannica was unable to take on its Irish counterpart himself. It is a revealing admission, and one that immediately invites comparison between the two works. That comparison is instructive, although not always in the ways one might expect.

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Plants, fish and floodplains: The Heol Senni story

High in the central Brecon Beacons, not far from the quiet village of Heol Senni, a small disused quarry cuts into green-grey sandstone, not far from the quiet village of Heol Senni, lies a small disused quarry cut into green-grey sandstone. To most passers-by, it is an unassuming feature – a slice of rock along the hillside with ruined quarry buildings, streaked with moss and fern. Yet, within those thin beds of rock, lies one of the most eloquent records of life’s first steps onto land: a fossil flora that captures the dawn of terrestrial ecosystems, and a single, irreplaceable fossil fish that swam among the earliest green riverbanks.

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Book review: Fossils on the Seashore: Beachcombing and Palaeontology, by Stephen K Donovan

At first glance, the title might mislead you into expecting a simple guide to finding fossils while strolling along the beach – a sort of field companion for holiday rock-hunters. But Stephen Donovan’s Fossils on the Seashore is a very different creature. It’s not about collecting curiosities for the mantelpiece. It’s about understanding the dynamic relationship between the living and the fossil record, and how coastlines act as natural laboratories for palaeontological and neoichnological study