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Ben Schmidt rock tackk

Sedimentary Rock (Sandstone)

Sedimentary rocks are types of rock that are formed by the deposition of material at the Earth's surface and within bodies of water. Sedimentation is the collective name for processes that cause mineral and/or organic particles (detritus) to settle and accumulate or minerals to precipitate from a solution.

Ignieous Rock(obsidian)

Igneous rock (derived from the Latin word ignis meaning fire) is one of the three main rocktypes, the others being sedimentary and metamorphic. Igneous rock is formed through the cooling and solidification of magma or lava.

Metamorphic Rock (Marble)

Metamorphic rocks arise from the transformation of existing rock types, in a process called metamorphism, which means "change in form". The original rock (protolith) is subjected to heat (temperatures greater than 150 to 200 °C) and pressure (1500 bars), causing profound physical and/or chemical change.


Stratification is a system or formation of layers, classes, or categories.

They saw the effects of floods, earthquakes and volcanic eruption, as well as the less dramatic but still noticeable changes brought about by freezing and thawing through the seasons, and by erosion as rains, rivers, and streams washed away bits of earth and sediment.

Why are older rocks over newer ones.

Older rocks are on top because they are created under ground.

How have rocks moved?

Erosion is the way we have moved rocks.