Geological anomalies: Chalcedony breccia in a cinnabar matrix and the disappearance of Michigan’s geology professor

Steven Wade Veatch (USA) Hidden among geological marvels at a mineral show was a cinnabar-bearing chalcedony breccia-specimen (Fig. 1). The term “breccia” refers to a rock composed of angular fragments, while “chalcedony” describes a type of cryptocrystalline quartz. Adding “cinnabar” specifies the presence of mercury sulphide, which creates a distinctive … Read More

Does the ground sloth, Mylodon darwinii, still survive in South America?

Dr Ross Barnett and Simon Sylvester In Zoology, nothing is more exciting than the rediscovery of an animal previously thought long extinct. The coelacanth (Latimera chalumnae) and the ivory-bill woodpecker (Campephilus principalis) are two famous recent examples of ‘Lazarus’ taxa. Well-publicised rediscoveries like these promote the idea that refugia containing … Read More

Riccardo Levi-Setti: Experimental physicist and trilobite expert

Steve Koppes (USA) Although he is an experimental physicist who discovered new elementary particles in the early 1950s and invented the high-resolution scanning ion microprobe, Riccardo Levi-Setti also is known in paleontological circles for co-discovering a giant trilobite subspecies and for his book, Trilobites. Decades ago, as a diversion, Levi-Setti … Read More

Book review: A Geological Field Guide to the Himalaya in India, Nepal, Bhutan and Tibet, by Dr Daniel Clark-Lowes

This book has something of an aspirational, rather than practical, feel to it. However, there is no doubt – in my mind anyway – that it is the best book on the geology of the Himalaya I have read. It is written with a nice light touch, with some humour. And it covers far more than just geology – where appropriate, it includes history, especially about the exploration of the subcontinent, and Asian culture.

Book review: The Lewisian: Britain’s oldest rocks, by Graham Park

Recently, I have finished the Great Silurian Controversy, a magnificent book about the nineteenth century arguments over the age of the lower Palaeozoic greywackes/sediments of Devon, and the creation of the concept of the Devonian. And reading The Lewisian: Britain’s oldest rocks by Graham Park, perhaps it occurs to me that this should perhaps be called, The Great Lewisian Controversy. It shares the same historical and scientific intentions, and the same grand sweep of scientific history from the early twentieth century, namely, the exploration over decades of the geology of the Lewisian of northwest Scotland.

Geology museums of mainland Europe: The palaeontological collection at the Teyler’s Museum, Haarlem, The Netherlands

Mike Howgate FLS (UK) Haarlem is about a half hour train journey from the hustle and bustle of the tourist mayhem that is Amsterdam, and a world away in ambiance. The Teyler’s museum is beautifully situated on the bank of the Spaarne River and just a ten-minute walk from Haarlem’s … Read More