Mechanical stability of underground rock structures hinges on the interplay between geological discontinuities, in situ stresses and engineered supports. Central concerns include the propagation of ...

While hiking deep in the Great Smoky Mountains National Park, explorers stumbled upon bizarre, ancient-looking rock formations—with no clear origin or explanation. Were they built by early settlers, ...

A puzzling wrinkled rock formation in Morocco has led scientists to rethink where ancient microbes could live. Instead of shallow, sunlit waters, these microbes may have thrived deep in the ocean, ...

Marian Posey grew up northeast of Jerome and, even as a child, paid particular attention to the many rock structures that surrounded her home. As an architectural historian, she later took on the ...

Anywhere from 85-120 million years ago magma from an arc of erupting volcanoes solidified deep within the Earth’s crust and began the process of creating the Sierra Nevada. Tectonic plates began to ...

To date, many geologists and geophysicists commonly accept that multiple thrust structures are formed by one thrust having been overridden by a younger one, which in turn is overridden by another even ...