Relative age dating lab gardening dating gardeners forums
Play-Doh--type modeling clay was used in our lesson, which can be made from any number of recipes found on the internet.Safety note: Remind students to keep clay and ingredients contained in the workspace, properly handle scissors, and carefully use the excavation tools. By doing this, you will unravel the geologic history recorded in the rock record, just as geologists did hundreds of years ago, and still do today. An earlier current-formed ripple set (at bottom of slide) was later modified by a second ripple train migrating at right angles to the first.Crests of the first set are preserved in the troughs of the second set, hence, the ladderback appearance.Additionally, we talk about the importance of relative age dating in understanding Earth's history.
Students should be able to understand the principles and have that as a background so that age determinations by paleontologists and geologists don't seem like black magic. Geologists in the late 18th and early 19th century studied rock layers and the fossils in them to determine relative age.
By using relative age dating, mineral resources can be found in specific geologic units, so we have to understand how the units form in order to search for specific minerals and fossils.
The lab uses knowledge of relative age dating to simulate a geologist discovering important pieces of evidence related to Earth's history, such as fossils and ore minerals.
Geologists use stratigraphy to study rock layers, called strata, and the formation of those layers, a process called stratification.
Stratigraphy helps geologists investigating Earth's history study fossils and assign ages to certain rock layers.