Category Archives: Magnetic Reversals

The Cretaceous Superchron, Beaufort Isochrons, and the Motion of North America

In the last post we explored a very peculiar set of seafloor isochrons in the Beaufort Sea and Arctic ocean. We found that a perpendicular shift in seafloor spreading defined the Cretaceous Normal Superchron, the longest known period in earth … Continue reading

Posted in Continental Wander Path, Cretaceous normal superchron, Geography, Magnetic Reversals, Paleogeography | Leave a comment

The State of the Onion

Let’s say the way this planet works is an onion. There are many layers and they interact in ways far more complex than onion rings. Yet we have to start somewhere, and peeling back the layers of this onion can … Continue reading

Posted in Climate, Geology, LLSVP's are Doughboys, Magnetic Reversals, Moho, Oceanography, Seismic Tomography | Tagged | Leave a comment

Huston, We have a Few More Problems

Humans are not naturally inclined to science. We yearn for certainty, the sort of certainty mathematical equations could provide if only we could be certain of the factors. We cannot. We don’t really yearn for mathematics, it is just another … Continue reading

Posted in Asthenia, Geology, Large Igneous Provinces, Magnetic Reversals, Moho, Oceanography, Plate Tectonics, Seismic Tomography | Tagged , , , | Leave a comment

Large Igneous Provinces, Temperature, Sea Level, and Extinctions

We had been looking at the stuff one can easily google regarding global temperature and large igneous provinces (LIP’s) and it seemed there might be something, so we dug in. There is an organization,, that has excel data in … Continue reading

Posted in Climate, Cretaceous normal superchron, Extinctions, Geology, Large Igneous Provinces, Magnetic Reversals, Paleo Sea Level, Paleoclimate | Tagged , , | Leave a comment

Around the World in Eighty Million Years

We have been doing a puzzle like you might have been given in first grade where there is some large animal with lines missing and your job is to connect the dots and fill it in. The joy is still … Continue reading

Posted in Cretaceous normal superchron, Geography, Geology, Magnetic Reversals, Pacific Triangle, Paleogeography, Plate Tectonics, Seafloor Isochrons | Tagged , , | Leave a comment

Wild Idea #6743: Possible Impact Signatures in Seafloor Isochrons

Who knows from what depths the well of ideas flows? For me it is often during the liberation of rote manual work that frees some bandwidth while still requiring a minimal level of focus and blood flow to the brain. … Continue reading

Posted in Asteroid Impacts, Geography, Geology, Magnetic Reversals, Paleogeography, Plate Tectonics, Seafloor Isochrons | Tagged , , , , | Leave a comment

Bad Hair Days and Magnetic Excursions

This picture of a model simulating the weakened and divided magnetic field during a reversal should be in the┬áthesaurus when you look up “bad hair day”. If this is anywhere near correct it should be no surprise that the nano … Continue reading

Posted in Gravity Anomalies, Magnetic Reversals, True Polar Wander, Virtual Geomagnetic Pole (VGP) | Tagged , , , | Leave a comment