A basaltic layer, dated at 18 million years, occurs concordantly within a sequence of sedimentary rocks. Using principles relevant to Relative Time Dating, describe the evidence for which you would look in order to determine the order of events. (Keep in mind that basalt may be either intrusive or extrusive). Be specific. Next, determine how old the rocks are above and below the basalt.
Basalts On a compound premise, basalts can be ordered into three general gatherings in light of the level of silica... View the full answer