I am definitely not a geologist, but my dad’s career involved understanding plate tectonics and I grew up in LA, so I’ve always been aware that the earth moves as the planet keeps changing itself over time. And nowhere is this more clear than on the Oregon coast, where the San Juan de Fuca plate meets the North American plate.
Look at this photo. Note how the rock layers are pushed up from east to west (from right to left in the photo).
In the next photo, the rock layers are pushing up in the other direction (west to east, or left to right).
Now, here’s the best part: these two places are about 400 yards apart on the same beach! The W-E uplift is at the front, the E-W uplift is on the far left in the photo.
This is plate tectonics at work! It’s fascinating to realize I was right at a place where two plates have met time and time again, pushing immense layers of rocks up and down as the planet reshapes the land we stand on.