1

Oceanic plankton die

and build carbon-rich

seabed

1

3

2

2

Tectonic

plates collide

3

Rock slabs stack,

lubricated by carbon in rock

layer, becoming mountain

1

Oceanic plankton die

and build carbon-rich

seabed

1

3

2

2

Tectonic

plates collide

3

Rock slabs stack,

lubricated by carbon in rock

layer, becoming mountain

Note: Complex deformation below mountains omitted