On the Schoodic Peninsula in Maine, diabase dikes intruded an older granite. Diabase is the equivalent of basalt that solidified underground. The diabase intruded upward from the mantle into fractures in the overlying granite. This occurred 195 million years ago and...
In late 2021, we started reclaiming the stone from this old barn in central Montana. The walls had collapsed in many places. The stonemasons that built this barn in the late 19th century collected the sandstone from the surrounding ranch. This sandstone is from the...
Most of the retaining walls in Yellowstone were built using boulders from the rhyolite flows around the central plateau. Click images to enlarge The rhyolite was used because it was available close by and was relatively workable with hand tools. Most walls have this...
This beautiful sandstone building was built in White Sulfur Springs, MT in 1892 for Byron Rogers Sherman, a successful local rancher and businessman. Click images to enlarge Sherman was described as a man whose “wide-spread involvement in the economic...
Harney Peak Granite1.7 billion years ago and many kilometers underground, the Harney Peak Granite intruded into an older mica schist. This granite is now exposed in the Black Hills of South Dakota. Click images to enlarge The same Harney Peak Granite is being sculpted...