Category Archives: Continental Wander Path

Differential Motions of the Continents, Mesozoic and Cenozoic Eras V: The 80mya Inflection

In the last post on constraints we decided that the east Pacific and Juan de Fuca ridges were useless in constraining the motions of the Americas. We decided that the Atlantic, Greenland, and Lomonosov ridges were acceptable explanations for the … Continue reading

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Differential Motions of Continents, Mesozoic and Cenozoic Eras

The total volume of ocean floor production becomes increasingly difficult to constrain as we work backwards in time. Ocean floor is increasingly lost to subduction, and efforts to replicate the missing parts become speculation. The continents, by contrast, have grown … Continue reading

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The Pacific Triangle, Take III

Essentially, the Pacific Triangle IS┬áthe Pacific Plate. Unless you wish to consider it a sinkhole, a point subduction zone, all that we know as the Pacific Plate has grown out of this spot in the last 175 million years. Seafloor … Continue reading

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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

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Rocks, The Origional Hard Data

You simply can’t deny rock. Kick it and it throbs your toe. They lie around us, largely ignored, Farmers curse them and pile them in walls, yet a few dedicated folks with pointed hammers have picked them to yield an … Continue reading

Posted in Continental Wander Path, Geography, Geological Evolution of the Western United States, Geology, hard data, Paleogeography, Plate Tectonics, Seafloor Isochrons | Tagged , , , | Leave a comment