That’s a ripple mark left by water that used to sit on top of this before it was rock. This used to be sand and other sediment - that's why it is called sandstone - which is a type of ...
3. Explain to the students the meaning of the ... Describe that the same behavior happens for many types of rocks. Tell the students that temperature and pressure increase as one goes deeper ...
In an exercise of bending language to the will of rock stars, here are three of the weirdest rock lyrics in music. Consider this a celebration of their strangeness. The three songs below may ...
Thus, any deformations of strata (Figures 2 and 3) must have occurred after the rock was deposited. The principle of superposition builds on the principle of original horizontality. The principle ...
These types of formations may also be formed by impact melting. See a pallasite meteorite on display in Hintze Hall. Mesosiderite meteorites are breccias, a variety of rock composed of broken ...