Cross what? Sandstone was formed from sand that became washed or blown into place and later cemented together by waterborne minerals to become solid rock. Crossbedding refers to a specific type of layering which is noticeable in many sandstone deposits. In the picture above, notice the flat horizontal line and then the layers dipping downward to the left. This is typical crossbedding. Measuring the angle that the layers dip can give a clue as to what deposited the...
Read MoreCross-Bedded Sandstones: Windblown or Water Carried?
