Its sand and gravel base with vegetable mold above is somewhat like the southern Jersey formation, but it is more productive from having a larger deposit of decayed vegetation.
(Its sand and gravel base with vegetable mold above; is; somewhat like the southern Jersey formation) (it; is; more productive from having a larger deposit of decayed vegetation)
Its sand and gravel base with vegetable mold above it
is is
somewhat like the southern Jersey formation
more productive from having a larger deposit of decayed vegetation