For example, weather erodes rock into sediment which may filter water for a while before it gathers into sedimentary rock which may compress into metamorphic rock, which may then crystallize into valuable minerals or may erode back to sediment.
(sediment; may filter; water; T:for a while; T:before it gathers into sedimentary rock) (it; gathers; L:into sedimentary rock) (sedimentary rock; may compress; into metamorphic rock) (metamorphic rock; may crystallize; into valuable minerals; T:then) (metamorphic rock; may erode; back to sediment)
sediment it sedimentary rock metamorphic rock metamorphic rock
may filter gathers may compress may crystallize may erode
water T:for a while T:before it gathers into sedimentary rock
L:into sedimentary rock
into metamorphic rock
into valuable minerals T:then
back to sediment