Geologic dating lesson

03 Jul

Over these billions of years since Earth’s formation, layers upon layers of rock, called rock strata, have been piling up.When organisms die, they leave behind skeletons, tracks, and other evidence that gets preserved in the rock, forming fossils.Diamonds Don't Form From Coal: Lots of students are being taught that diamonds form from coal. A very small minority of diamonds have formed with coal as their carbon source.Most of Earth's diamonds formed deep in the mantle long before the first land plant (the source sediment of coal) existed!This article explains how diamonds form and why coal should not be considered the primary carbon source.

Great Transformations DVD with guided questions Weather crossword puzzles- Students can work in pairs or alone, some students may wish to work in the learning lab.Crests of the first set are preserved in the troughs of the second set, hence, the ladderback appearance.Beaufort Group (Permian-Triassic), Karoo Basin, South Africa.Scientists look at minerals that show up in the rock, its texture, its environment, and the processes that formed it — like volcanic eruptions or river deposits — to help piece together geologic history.In total, there are ten games in this learning objective, including: A further preview of each game is below.