Geology

The stone used for this church's exterior was born out of the aftermath of volcanoes tearing North America apart about one billion years ago.

On a triangular lot on Milwaukee's north side stands a building with ancient sea fossils embedded in its structure.

Have you ever wondered what might be hidden underground? A metal detectorist can help with that!

Bubbler Talk listener, Sophia Heyn discovered the geological history of quarrying in Estabrook Park while researching a school assignment. We went together to discover the history of the riverbed.

The Wisconsin Gas Building may be best known for its flame-shaped lamp, but the story of this Art Deco masterpiece begins over three billion years ago.

Constructed in 1895, Milwaukee’s City Hall remains one of the oldest continuously used city halls. But its story begins almost a half-billion years ago.

In this episode of "What Milwaukee is Made Of," we explore the history of Cream City Brick — starting at its Ice Age origins.

Wauwatosa dolostone is used in buildings across Wisconsin, but where did it come from? A geologist tells its story, from its origin 425 million years ago to its use as a building material today.

Raymond Wiggers is a geologist, science writer and author of the new book "Milwaukee in Stone and Clay," which chronicles dozens of different types of rocks that buildings in our city are made of and how they got here.

Understanding the enormous timescales in our planet’s long history can be difficult — practically mind-boggling. But Marcia Bjornerud hopes her new book…