Week 2 in Geol9- tectonic plate boundaries as responsible for geological activity

This week we are exploring plate tectonics and how the location of each country is affected by its position respect to plate boundaries.

The NOAA map shows clearly how the Easter US is a passive margin and the Western side of the country is a very active one, with the Pacific Plate, Cocos, Juan de Fuca plates connecting to the North American plate. Not a surprise we are on the ‘Ring of Fire’, where a lot of the volcanic and seismic activity happens! Just recently in my twitter feed this story below was developing....a detected seismic swarm [multiple small quakes] in progress in southern Cascadia.

Of course, there are a few exceptions, like the current activity of Hawaii (hot spot) or the New Madrid area (ancient rift), both not at plate boundaries, but is for some other time.

We might not know when events like volcanic eruptions or big earthquakes will happen, but if you know your Tectonics, you definitely know where the do happen!

All for now-

Other Plate Maps found at USGS or Esri: interactive