My Rock Cycle Presentation

​ The Rock Cycle
Touro College
Physical Geology
Professor: Max Schuster


Professor: Nancy Zeno's Presentation

By Nancy Zeno

​ The Rock Cycle

​The rock cycle describes how the three major rock types: Igneous, sedimentary, and metamorphic- transform from one type to another over geologic time through processes like melting, cooling, weathering, erosion, compaction, and heat & pressure.

​Earth's internal heat and external forces like water and wind- this slow, continuous cycle of rock formation, destruction, and reformation never truly ends, as mineral grains have survived for billions of years through it.

​Form when molten rock (magma or lava) cools and solidifies, often occurring near volcanoes or deep underground.

​​Igneous rock

​Form from sediment (small fragments of other rocks and organic matter) that is weathered, eroded, transported, and then compacted and cemented together.

​​Sedimentary rock

​Form when existing igneous or sedimentary rocks are subjected to intense heat and pressure deep within the Earth, causing their mineral structures to change within melting completely.

​​Metamorphic rock

​ The Grand Canyon
The oldest rocks (Vishnu Schist) are about 1.7-2.0 billion years old.
The youngest layers (Kaibab Limestone at the rim) are about 270 million years ago.
This huge time span shows multiple rock cycle events: uplift, erosion, deposition, Intrusion, and metamorphism.

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