Luchans Science

Pangaea and Plate Tectonics

Fossil and geologic evidence support that our Earth used to be composed of one giant landmass called Pangaea which started breaking apart approximately 240 million years ago and is still moving today. Sea Floor spreading at the Mid Atlantic Ridge provides new rock  and older rocks as you move toward the continents Africa and South America, which are recorded to be moving apart from one another at about 2.5 cm per. year. . . . plate tectonics will continue to reshape our planet as there will be more ovement, Earthquakes, Volcanoes, and large plate movements over time. . . . What will our planet look like in  another 100 million years?

The Interpretation of Fossils and the Geologic Time Scale

We are exploring fossils and how they allow us to compare past and current life on this planet, thow environments have changed, and provide important evidence that our tectonic plates have moved over time.  We will eventually connect all of these concepts to the process of natural selection and how life on this planet has evolved, which we see in the fossil record and allows us to compare organisms and their connections.

Geologic Time

Fossils and rocks have preserved an amazing story for us to uncover, as we look back into time using rocks and fossils as the guide.  They show us how the Earth has changed as well as the the environment and life along with it.  Our picture of Geologic Time allows use to compare living things to the past and observe their similarities and differences.