Hydrocarbons can be widespread in sedimentary rock, but reservoirs are formed by:

a. porous and permeable beds bounded on all sides by impermeable rock.
b. large cavities, such as cave systems in limestone reefs.
c. structural traps.
d. porous and permeable beds bounded on all sides by impermeable rock AND structural
traps.
e. all of these.


D

Environmental & Atmospheric Sciences

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