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Widespread deposits

What is unusual about widespread sedimentary deposits and other features of the sedimentary record? Learn more on the subject from this short article: https://www.grisda.org/was-there-a-great-genesis-flood-1

Lazarus Taxa

What are "Lazarus taxa"? What can we learn form them about order in the fossil record? Explore this subject in this short article: https://www.grisda.org/lazarus-species-1

Glaciations

Does the geologic record preserve evidence for the occurrence and extent of former ice ages? What kind of information is used to make these inferences? Learn more on glaciations and the geologic record…

Cambrian Explosion

What is the Cambrian explosion? Why was Darwin puzzled by it? Learn more about this topic in this short article: https://www.grisda.org/cambrian-explosion-and-darwins-doubt-1

Plate Tectonics

Plate tectonics is an example of scientific revolution, where a new way of understanding data from nature was established over a short interval of time. Learn more about how plate tectonics relates to…

Catastrophic Earth Science

Do you want to learn more about the history and significance of catastrophism in geology? Here is a short article on the topic: https://www.grisda.org/catastrophic-earth-science-a-realistic-science-1

Catastrophism

Catastrophism is a very important concept in geology. Learn more about its role in formulating scientific hypotheses in this article https://www.grisda.org/catastrophism-discussion-of-its-current-status-in-geology-and-a-prediction-1

Dinosaurs and the Bible

How can such fearsome creatures as dinosaurs be reconciled with a biblical model of creation? Learn more about dinosaurs and the Bible in this article https://www.grisda.org/dinosaurs-and-the-bible-1

Dinosaur Size

Not all dinosaurs were large. Learn more about dinosaurs at https://www.grisda.org/the-existence-and-extinction-of-the-dinosaurs-1

Clash of Ideas, Episode 4

This episode explains how an enigmatic suite of dark rocks in the Swiss Alps bears witness to the enormous tectonic forces which have been unleashed in the past history of our planet. If you are a teacher,…

Hawaiian lava

Three different kinds of lava are found in and around the Hawaiian Islands. Enjoy this brief description of each kind and the conditions under which it is formed.

Megabreccias

Ever heard of megabreccias? Learn more about them at http://bit.ly/Megabreccia

Flat Gaps

Have you ever heard of "paraconformities"? Learn more about them at http://bit.ly/Flat_Gaps

Black Sand Beach

Black sand beaches are iconic of Hawaii, but where do they come from and how long do they take to form?