In 1869, John Wesley Powell was studying layers of rock in the Grand Canyon when he noticed an unconformity in the layers. Around a billion years were missing, and the problem turned out to be global.

The Great Unconformity is a major gap in Earth's geologic record. The missing layer between Precambrian and Cambrian rocks ...

James is a published author with multiple pop-history and science books to his name. He specializes in history, space, strange science, and anything out of the ordinary.View full profile James is a ...

A layer of rock just 520 million years old sat directly on top of ancient rock dating back 1.4 to 1.8 billion years.

HANOVER, N.H. – January 25, 2022 – New research provides further evidence that rocks representing up to a billion years of geological time were carved away by ancient glaciers during the planet’s ...

Recently, the journal SCIENCE CHINA Earth Sciences published a research by Professor Hongwei KUANG, Dr Nan PENG and Professor Yongqing LIU from the Institute of Geology, Chinese Academy of Geological ...

POCATELLO, Idaho (KIFI) – Two Idaho State University scientists and their students are tackling a research project that will tell us more about the greatest of gaps in our understanding of Earth’s ...