I mean, a desert is basically just a huge amount of sand but where does it stop, what is beneath? I googled it and it says there’s groundwater but what does that mean, and (how) is that even possible?
Edit: So, actually the main question I wanted to know is if there’s a exact border between sand and rock, or if the sand just gets denser and denser until it’s rock (but I believe the weight must not be that big), like Saturn or something.
(Yes, I know what a desert is but I specifically need to know about this certain type of desert)
In: 1165
Below everything on earth (sand dunes, mud, lakes, glaciers, bogs, rivers, oceans, ice caps, grasslands, prairies, forests – every possible thing you can think of – dig down far enough and you get to rock. Bedrock can be sedentary (sand stone, limestone, etc), igneous (granite, basalt, etc.) or metamorphic (gneiss, marble, schist, etc.) and the kind of bedrock you run into depends on the underlying geology of the particular area in question.
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