Tag Archives: Subduction

The Pacific Triangle Revisited, The Impact, The Wave

We have explored the Pacific Triangle and the Ring around Antarctica in prior posts. It just seems so outrageous that three spreading ridges would suddenly emerge from a single point in the Panthalassic Ocean 170 million years ago and begin migrating away in … Continue reading

Posted in Asteroid Impacts, Geography, Geology, Pacific Triangle, Paleogeography, Plate Tectonics, Seafloor Isochrons | Tagged , | 4 Comments

Serpentine and the Primordial Subduction

Serpentine is the California State Rock. The effluent of toxic mud volcanos might seem a strange choice for a state rock, but the related higher grade blue and greenschist metamorphism has produced eerily beautiful rocks with sinuous veining from which … Continue reading

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Where’s the pull?

I have this slab pull problem. It started when my brother (a geoscientist) alerted me to the latest tectonic trend. It seems those inclined to mathematically model the lithosphere are unable to find an equation to express the spreading at … Continue reading

Posted in Geography, Geology, Having one's head up one's maths, Oceanography, Paleogeography | Tagged , , , , | Leave a comment

Too Much on my Plate

I’ve been getting annoyed with the grade school conception of “plate” tectonics where everyone is identifying plates and their relative motions and saying stuff like the Japan Earthquake of 2011 was caused by the Pacific Plate sliding under Japan. It … Continue reading

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