Exercise 2 relative and absolute dating of geologic events answers
For example, most limestones represent marine environments, whereas, sandstones with ripple marks might indicate a shoreline habitat or a riverbed.Return to top The study and comparison of exposed rock layers or strata in various parts of the earth led scientists in the early 19th century to propose that the rock layers could be correlated from place to place.In this activity, students begin a sequencing activity with familiar items letters written on cards.
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Relative dating is determined by comparing its placement with that of fossils in other layers of rock.
Relative dating is the science determining the relative order of past events, without necessarily determining their absolute age Absolute dating is the process of determining an approximate computed age in archaeology and geology.
*Life Science: Fossils indicate that many organisms that lived long ago are extinct.
Extinction of species is common; most of the species that have lived on the earth no longer exist.Sequencing the rock layers will show students how paleontologists use fossils to give relative dates to rock strata.