Category Archives: Paleogeography

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 | Leave a comment

Differential Motions of the Continents, Mesozoic and Cenozoic Eras IV: Constraints

We know the position and velocity of stable points on our six cratons. A reasonable question to ask is, “Can we account for this motion?” Above is a map of the ocean floor created in the last 10 million years. … Continue reading

Posted in Geology, Paleogeography | 1 Comment

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

Posted in Continental Wander Path, Paleogeography | 2 Comments

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

Paradise to Ice

There are Edens on earth today. They are not found toward the North and South Poles today, but for most of earth history they were.  What causes the planet to transition from paradise to ice? This is a matter of considerable … Continue reading

Posted in Climate, Paleoclimate, Paleogeography | 4 Comments

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

Broke Down in Bishop

Kyle, my son in law, missed out on circumnavigating Mt. Whitney last October. Unsure if it would work out we latched onto the latest available permit for the North Fork of Lone Pine Creek last Christmas and listed our means … Continue reading

Posted in Geography, Geology, History of Life, Mount Whitney, Paleogeography, Sierra View | Tagged , | 3 Comments