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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
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Category Archives: past worlds
Are “steady-state” systems ahistorical?
I’m currently back reading “Earth’s Deep History” by Martin Rudwick, and once again I am being annoyed by what seems to me to be a pretty fundamental misunderstanding of what is meant by “steady state” in the context of Earth … Continue reading
Rivers might not need plants to meander
Here’s a new study that, if true, this would have some big implications for the nature of the sedimentary record for a lot of Earth History. Research from 1.2 billion year-old sediments in Scotland adds the oldest evidence yet against … Continue reading
Has Earth’s mantle always worked like it does today?
This seems to be the latest round in the eternal battle between the geophysics data which strongly suggests whole mantle convection (and for quite some time, if ideas about the origin of all the weird junk at the core-mantle boundary … Continue reading
A new recipe for Large Igneous Provinces: just add BIF, then wait a couple of hundred million years
Here’s a new paper that proposes the biggest of big ideas: a 240 million year causal chain that runs from the Earth’s surface, to the core mantle boundary, and back again! Here’s how it supposedly goes: 1. Banded iron deposits … 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
Nice plan for content warnings on Mastodon and the Fediverse. Now you need a Mastodon/Fediverse button on this blog.