Deposits Earth Science Archive
An acclaimed international collection of articles and book reviews on fossils, geology, minerals, palaeontology and earth science
Steve Koppes (USA) When the solar system was born 4.5 billion years ago, davisite and grossmanite were soon there. These minerals were two of the first solids to form when an interstellar gas cloud collapsed to form the sun. Found in the Allende meteorite (Fig. 1), they now carry the … Read More
Jason Sherburn, (UK) Living near the coast is amazing. Or, at least, that’s how I imagine it to be for budding fossil collectors intent on unlocking the mysteries of the ancient world. However, I live about 50 miles from the coast and, while my own area is not topographically dull, … Read More
Deborah Painter (USA) Why is there a reef in a cavern under a hill in south-central Pennsylvania in the USA? My good friends Richard Hedges and David Hawk and I wanted to know the answer. We had seen various websites which describe an amazing commercial cave with one wall composed … Read More
Dick Mol (The Netherlands) The first finds of mammoth fossils and other representatives of the ice age megafauna occurred in 1874. It was assumed then that there must have been a mammoth graveyard offshore of the province of Zeeland in The Netherlands. To date, many thousands of megafaunal remains have … Read More
Vivi Vajda (Sweden) In a valley in the Andes, at 2,500m above sea level, is Bolivia’s third largest city – Cochabamba. The town is beautifully surrounded by snow-capped mountain peaks of which the highest is Tunari at 5,088m. For a palaeontologist, the town is an excellent base camp, as it … Read More
It is with deep sadness that we share the news of the passing of Roy Bullard, who died on the 12th of May 2025 after a long and courageous battle with health issues. Roy was the joint founder and former editor of Deposits magazine, a publication he helped launch with Alister Cruickshanks in 2004. Together, they built a platform that became a valued voice in the geological and palaeontological communities—one that welcomed contributions from professional academics, undergraduate students, and dedicated amateurs alike. Roy retired from Deposits and its parent company UKGE in 2016 due to health reasons, but his legacy and influence have remained ever-present.
Jon Trevelyan (UK) Recently, I spent a few days on my own down at one of my favourite fossil hunting sites – Copt Point and East Wear Bay in Folkestone. As readers probably know, the Gault Clay at Folkestone is a marine sedimentary deposit from the Lower Cretaceous (Albian) period, … Read More
Paul Cox (UK) During the 1980s, the secretary of the local branch of my professional association was famous for arranging field trips to places of interest. By and large, these had nothing to do with my profession, but they were nevertheless interesting places. One day, he had arranged a visit … Read More
Elizabeth Devon (UK) ‘I know it’s Monday when a new Earth leaning idea appears’ – quote from a supporter in India. The Earth learning idea was set up for the International Year of Planet Earth with the intention of reaching as many children throughout the world as possible, particularly those … Read More
In recent years, geology has evolved from being primarily concerned with rocks, minerals and the Earth’s physical structure, to integrating fields, such as climatology, meteorology, biology and more. This interdisciplinary approach has become essential for understanding complex Earth systems and this book is part of that trend – a discussion of Earth’s climate and the evolution of life, in the context of geology.
Tony Forsyth (Australia) Located over 1,100km west of Sydney in New South Wales, Australia is the city of Broken Hill (Fig. 1). Nicknamed Australia’s “silver city”, with a population of over 20,000 people, it is now a prosperous centre for mining, the arts, tourism and film production. However, my wife … Read More
Mike Viney (USA) Introduction The Front Range of the Colorado Rockies is not a place one would expect to find a residence designed in the style of a European castle. So, for me, it was a delightful surprise to learn about the existence of Cherokee Castle in Sedalia, Colorado (Fig. … Read More
Paul Taylor (UK) A couple of years ago I was approached by the publishing section of the Natural History Museum to ask whether I would be interested in writing a general book on fossils. They had been happy with my previous book – A History of Life in 100 Fossils … Read More
I reviewed Paul Taylor’s book, A History of Life in 1000 Fossils, a while ago and really enjoyed it and its format. And I should note that Paul is a long-time contributor to Deposits, in part due to his ability to write great English to explain palaeontology to amateurs and experts alike.
Heather Wilson (New Zealand) I am involved in a rock and mineral club at Dunedin, which is situated about a third of the way up the east coast of New Zealand’s South Island. Given the possibility of flying from one end of the country to the other in three hours, … Read More
Chris Broughton (UK) The Black Country is an area located just to the west of Birmingham, right at the heart of the UK. It lies between the towns of Dudley, Walsall and Wolverhampton, and is noted for its industrial past. It is so named because of the concentration of coal … Read More
Wayne Sukow (USA) In Part 1 of this article, I showed how agate begins to form. Starting with tiny bubbles on the surface of a cavity in basalt, a husk forms showing their imprints. These bubbles are implicated in the creation of amorphous silica aggregates. There is also a steady … Read More
