Ptolemy Abu Rayhän al-Biruni
Doreen Massey
Alexander von Humboldt
studied regional inequality and the
development of cities all over the world
ploneered the use of
mathematics in geography
developed the first accurate maps
of land and water masses
studied the plant and animal life and
climates of the regions he explored

Why might a single rock layer exhibit different types of sedimentary rocks within it? view available hint(s) why might a single rock layer exhibit different types of sedimentary rocks within it? such a rock layer, termed a facies, when traced laterally represents a variety of depositional environments that formed in a sequence over time. such a rock layer, termed a facies, when traced laterally represents a single depositional environment that formed over time. such a rock layer, termed a facies, when traced vertically represents a variety of depositional environments that formed at the same time across a broad area. such a rock layer, termed a facies, when traced laterally represents a variety of depositional environments that formed at the same time across a broad area. such a rock layer, termed a facies, when traced vertically represents a variety of depositional environments that formed in a sequence over time.