What's under all the sand on the beach?

Question

If you go to the beach your basically standing on grains of sand, but what is under all that sand...

Answer 1

water. trust me, if you keep digging and hit at least 3 feet deep, you'll hit water.

the farther away from the shore the more deep you'll have to dig

make sure you fill the hole up before you leave so no one falls in it!

Answer 2

Unlucky pilgrams

Answer 3

It depends on the location. One answerer has mentioned water, and although it is true that when you dig a hole you'll eventually find it fills with water, this is just the watertable seeping in through the sand (the beach isn't floating!).

Eventually, if you dug deep enough, you'd find the bedrock of the continental crust, which is probably something like an andesite for a lot of places. However the beach, being at the margin between the continents and the oceans, will be sitting on a lot of accretionary sediments which have built up over time, so you'd probably find the beach sediment extends for a few metres, and grades into some much more compact sediments which may be (at a guess) a few hundred metres thick, sitting on top of the continental crust.

Answer 4

Rocks! I dug so hard into the sand made a hole then i dug out the rocks with my spade (im twelve) and i found the sea water!!

Answer 5

land/earth/crust

Answer 6

Rocks, cement, floor!

These sands are from the sea being washed onto the cement/rocks, and caused it to rust and made it into sand.