Source: Wikipedia
There is an intuition about layered rock that is almost universal and substantially wrong.
The intuition is that layers accumulate steadily, like pages in a book, so that a…
Everything about a lake follows from how its basin was made. Ice, movement of the crust, volcanic collapse, dissolving rock and a river changing its mind all produce lakes, and…
The question worth asking at any waterfall is what makes the drop possible, because a river will otherwise smooth its own bed given enough time. Something is preventing that, and…
The single variable that explains most of what you see is how thick the lava was. Runny lava spreads out and builds gentle slopes; thick lava traps gas, moves barely…
A quarry is a negative space that explains a positive one. The buildings, the walls, the roofs and the roads of an area all came from the ground somewhere in…
Every spring is an intersection between water moving underground and a surface that happens to be in the way. The rock decides where, and everything else follows. Here are fourteen.…