Category Archives: sediments

Deep time and dead things in the wall

Here in Cadiz, I’m surrounded by death and I don’t mind at all. It’s the geologist in me thinking this – in every other way this is a lovely life-affirming holiday. It’s just that every surface seems to be filled … Continue reading

Categories: sediments

New Scottish Oil field discovered (470 million years too late)

Scottish oil is topical. Most of Britain’s oil and gas deposits sit under the seabed around Scotland but the revenues are shared with the whole of the United Kingdom. ┬áIf Scotland decides to become an independent state (there’s a vote … Continue reading

Categories: Scotland, 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