Sedimentary rocks are formed through a multi-stage process. It begins with the weathering of pre-existing rocks, followed by the transport of these weathered materials. Next, the material undergoes deposition, compaction, and finally, cementation, which binds the sediment together to form solid rock. These rocks provide a fascinating glimpse into Earth’s history and the processes that have shaped our planet.
According to Science Daily, sedimentary rocks cover a significant portion of the Earth’s surface, estimated at 75%. [1] Other sources suggest this figure could be as high as 85%, but for the sake of caution, we’ll use the more conservative estimate. This widespread presence highlights the importance of understanding how these rocks are formed and what they can tell us about the past.
Furthermore, there’s abundant evidence of fossilized sea creatures found at high altitudes, far above present-day sea levels. A prime example is the Grand Canyon in Arizona. The Redwall Limestone, located 7,000-8,000 feet above sea level, is rich in marine fossils. These fossils include brachiopods (a type of clam), corals, bryozoans (lace corals), crinoids (sea-lilies), bivalves (other types of clams), gastropods (marine snails), trilobites, cephalopods, and even fish teeth. [2] The presence of these fossils raises questions about how they came to be located so far above sea level.
If the great flood described in Genesis 7 did not occur, how can we account for the vast amounts of sedimentary rock covering the Earth? If the flood narrative is merely a fable, how did these sea creatures become fossilized within the Grand Canyon’s rock layers? While non-biblical explanations exist, they often fall short of providing a completely satisfying answer, at least to some.
-Jim
[1] https://www.sciencedaily.com/terms/sedimentary_rock.htm – accessed June 24, 2016
[2] S.S. Beus, “Redwall Limestone and Surprise Canyon Formation,” in S.S. Beus and M. Morales, eds., Grand Canyon Geology , 2nd edition (New York, NY: Oxford University Press, New York, 2003), p. 115–135.