Where on Google Earth? (click on image to view)
Here’s a special deal to celebrate the start of 2016 geo-tripping: three geo-challenges for the price of one! I visited all in a period of five days, traveling by car. Where was I? [answers here]
Ordered by increasing age of strata:
#1 Darker brown is caused by seepage from the base of a super important aquifer.
#2 Thousands of immigrants passed by—did anybody notice the white ash layers and curious wavy contact?
#3 This rock is gray when fresh, weathering to pale yellow or almost white. This is its type area, and its geological period is eponymous as well.
Please answer, speculate, discuss in Comments below. I’ll add locations in a few days, and posts will follow. Happy geo-travels!