Rock Cycles

Berkeley, Monday, October 27, 2025 8:20 PM

It is fascinating how the sea floor is elevated due to pressure and tectonic activity.

Then, those rocks, which might sprout as igneous, or might flight from a volcanic eruption.

Then those become sediments. That might be through weathering for the bigger rocks.

They roll, due to gravity to the lower parts of a valley or to the river.

Water might push them downhill as well. Also earthquakes can push them.

Then, they go carried by rivers.

They become smaller grains so they can flow to the delta.

Then, they flow to the sea floor.

They get compacted in there. It becomes a sedimentary rock.

Through tectonics, the sea floor might subdue under a continental plate.

They melt into the magma (probably melt).

Then, they go back in the earth.

It is a wonderful process.

Sources to read:

Tarbuck, Edward J., Frederick K. Lutgens, Dennis Tasa, and Scott Linneman. 2020. “Earth: An Introduction to Physical Geology.” 13th edition. Pearson.

Practical Geology series.

That is for physical geology. But I am also quite interested on reading about historic geology.