-
The Authors
For lot's more videos on soil moisture topics, see Drs Selker and Or's text-book support videos https://www.youtube.com/channel/UCoMb5YOZuaGtn8pZyQMSLuQ/playlists
[…] Announcing STORMS | Highly Allochthonous on Recent News […]
Category Archives: Archean
Remagnetisation spoils the paleomagnetic party again
Did the Earth have a magnetic field before 3.5 billion years ago? Previous paleomagnetic studies of the world’s oldest mineral grains – the Jack Hills zircons, which have maximum ages of 4.4 billion years – claimed that tiny inclusions of … Continue reading
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
Lots of oxygen on the Archean Earth?
New evidence for the early evolution of photosynthesis: was the early Earth really as oxygen-free as we think it was?
Continue reading
Geopuzzle #12 (finally) revisited
The answer? I dunno…
Continue reading
What’s up with those Archean sandstones?
In addition to searching out evidence for Archean microbial mats, my revisitation of the Pongola sandstones gave me the chance to look a bit more closely at their lithology. When I last posted pictures from this sequence, there was a … Continue reading
Nice plan for content warnings on Mastodon and the Fediverse. Now you need a Mastodon/Fediverse button on this blog.