Category Archives: Palaeozoic

Oxygenation of Earth’s atmosphere may not have required a trigger event after all

In Earth history, there have been 3 abrupt jumps in atmospheric oxygen. A evolutionary or tectonic trigger is usually invoked, but a new study just published in Science suggests all you need is gradual oxidation of earth’s surface plus feedbacks … Continue reading

Categories: Archean, climate science, deep time, geochemistry, geology, Palaeozoic, past worlds, Proterozoic, society

Scenic Saturday: Crossbeds on the Edge

Some of the famous features of the Peak District are not really peaks at all – but there is nothing more scenic than a wander along one of the ‘Edges’. These sheer cliffs, scattered along the eastern and western edges … Continue reading

Categories: geology, geomorphology, Palaeozoic, photos

Scenic Saturday: a pilgrimage back to the grand granitic tors of Dartmoor

The high and rugged scenery of Dartmoor is as wild and untamed a landscape as you’re likely to find in the United Kingdom, and would seem to have more in common with the Scottish Highlands than the prim and proper … Continue reading

Categories: geomorphology, outcrops, Palaeozoic, photos, rocks & minerals

The making of an angular unconformity: Hutton’s unconformity at Siccar Point

Photos and video from a geo-pilgrimage: an in-depth look at Hutton’s Unconformity, and the geological history that it represents. Continue reading

Categories: deep time, geology, outcrops, Palaeozoic, photos, structures

11 terranes amalgamating

On the 11th day of Christmas my true love sent to me…
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Categories: geology, Palaeozoic, past worlds, tectonics