The Shunga Event; did a Precambrian mass extinction give rise to an ancient supergiant oil field?
Earth continues to evolve. So far it has taken, notwithstanding Bishop Ussher’s different view of things, about 4.6 billion years […]
The (really) Ancient Earth
Throwing the Celestial Dice
The expression global extinction frequently conjures images of all life being snuffed out by an act of celestial hubris. Asteroids,
Marrying Fossils, Isotopes and Geological time
Fossils and Strata; Relative geological time When one sedimentary layer overlies another, we can be fairly certain that the lowermost
Measures of Temperature in the Bowels of the Earth
We don’t need to look far to see evidence that the interior of the earth is hot; geysers and
When Time Goes Missing
The value of missing time Geological time that has gone missing When you next look at sedimentary strata exposed in
The Ancient Earth 7. The Art of the Stromatolite
Algae, Fossil Slime and Organic Precambrian Art Stromatolites are the earliest physical life forms on earth; they were the precursors
From Sand to Stone = Sandstone; A Remarkable Transformation
You are at the beach, by the river, in the garden; you walk through soft sand, squish through mud,
Someone passed this way: Tracks, trails, impressions, and footprints
Trace Fossils Imagine the squelch! Footprints of people, birds, and dogs at the beach. Most of us have probably seen
How do we know which way is up #3. A philosophical interlude
How Geologists Interpret Ancient Environments. 3 A Philosophical Interlude You are confronted by a rocky cliff and your geologist friend
How do we know which way is up? #2 Ruffles and desiccation
How Geologists Interpret Ancient Environments. 2 Ruffles and desiccation Nearly all sedimentary rocks contain structures – fabrics, planes, contortions. If