Category Archives: sediments

The Great Ordovician meteor shower

Between Mars and Jupiter, 470 million years ago, there was a massive collision between two 100km-sized chunks of rock – this solar system’s biggest bang of the last billion years. It created a massive cloud of smaller fragments. Some of … Continue reading

Categories: History, impacts, sediments

The South Mayo Trough: tiny grains record huge events

Sedimentary basins have been described as ‘tape recorders’ that preserve evidence of past events. Some sedimentary basins contain ‘recordings’ of grand tectonic events – plate collisions and mountain building. The information is stored as subtle but compelling patterns in the … Continue reading

Categories: Ireland, metamorphism, sediments, tectonics

Fracking great science from the British Geological Survey

Fracking is rightly a major political issue. In Britain this is topical as the government has just released a technical report showing that very large volumes of natural gas are locked into rocks beneath northern England. As a tax-payer whose … Continue reading

Categories: England, sediments

Dalradian – a Celtic Supergroup

Geology is such a great thing to study because it involves making so many connections through time and space, switching scales from the cosmic to the atomic. This means that challenge for this series of posts about the geology of … Continue reading

Categories: Ireland, Scotland, sediments, tectonics