In some areas, you may have a stratigraphic colum that contains everything from old, metamorphic rocks at the bottom to layers of volcanic basalt in the middle and layers of sedimentary rocks at the top.
(you; may have; a stratigraphic colum that contains everything from old, metamorphic rocks at the bottom to layers of volcanic basalt in the middle and layers of sedimentary rocks at the top; L:In some areas) (a stratigraphic colum; contains; everything from old, metamorphic rocks at the bottom to layers of volcanic basalt in the middle and layers of sedimentary rocks at the top)
you a stratigraphic colum
may have contains
a stratigraphic colum that contains everything from old, metamorphic rocks at the bottom to layers of volcanic basalt in the middle and layers of sedimentary rocks at the top L:In some areas
everything from old, metamorphic rocks at the bottom to layers of volcanic basalt in the middle and layers of sedimentary rocks at the top