Over the ages, nitrogen-rich organic materials from the ocean drifted down to become part of the sediment, which in time was transformed by heat and pressure into the rocks that now compose much of the western slope of the Sierra Nevada mountain range.
(nitrogen-rich organic materials from the ocean; drifted; down; to become part of the sediment; T:Over the ages) (nitrogen-rich organic materials from the ocean; to become; part of the sediment) (the sediment; was transformed; by heat and pressure; into the rocks; T:in time) (the rocks; compose; much of the western slope of the Sierra Nevada mountain range; T:now)
nitrogen-rich organic materials from the ocean nitrogen-rich organic materials from the ocean the sediment the rocks
drifted to become was transformed compose
down to become part of the sediment T:Over the ages
part of the sediment
by heat and pressure into the rocks T:in time
much of the western slope of the Sierra Nevada mountain range T:now