Category Archives: Plate Tectonics

Differential Motions of the Continents, Mesozoic and Cenozoic Eras: The 120mya Inflection and Finale

A square kilometer of extruded ocean floor exerts force in all directions. The “squareness” is partly our own construct for convenience of measurement, but also justified by lateral offsets where the linear ruptures we call ridges accommodate the curvature of … Continue reading

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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

Posted in Continental Wander Path, Paleogeography, Plate Tectonics | 1 Comment

Aftershocks Implicate Unusual Fault System in American Canyon Quake

California can be thought of as a ice flow where multiple independent blocks with different inherent buoyancies are at times pressed together, pulled apart, and slid past each other. The M 6.1 American Canyon quake did not take place on … Continue reading

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The Pacific Triangle, The Pacific doughboy, and the wave

Folks just don’t seem to have their arms around the disarray in the earth sciences these days. Climate science and plate theory are going to have to be rebuilt from the ground up, or more appropriately from the core-mantle boundary. … Continue reading

Posted in Geography, Geoid, Geology, Large Igneous Provinces, LLSVP, LLSVP's are Doughboys, Oceanography, Pacific Triangle, Paleogeography, Plate Tectonics, Seafloor Isochrons, Seismic Tomography | Tagged , | Leave a comment

Russians R Us

So perhaps you are red headed and fancy yourself Celtic. Well, I’ve got news for you. There may have been a few red genes somewhere but the Celtic genome and culture were centered in France and characterized by brown hair … Continue reading

Posted in Anthropology, Geography, History, Plate Tectonics, 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

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