Texas Dow Employees Credit Union Routing Number, Address, Swift Codes. By State: 41 branches found. A routing number is a 9 digit code for identifying a financial institution for the purpose of routing of checks (cheques), fund transfers, direct deposits, e-payments, online payments, and other payments to the correct bank branch.
Specific to layered sedimentary rocks, geologists long ago determined that studying such layers -- what is called the âsuperpositionâ of the rocks -- is the key to tracking the Earthâs evolution, including the ebb and flow of oceans, lakes and rivers, and the shifting of sands and other forms of sediment.
Because we know that sediment is originally deposited in flat-lying layers, if rock strata are tilted or offset by a fault, it means there has been tectonic activity in an area. Geologists also use sequences of rock strata to determine the ages of different beds relative to one another. Older beds are at the bottom of a stack of layers, assuming they have not been tipped over! Lesson Summary. Rock strata refers to stacked-up layers of sedimentary rock. Other kinds of rock can have layering in them but the word 'strata' is reserved for sedimentary rocks, rocks composed of individual fragments of minerals or other rocks.