MontanaGrow products are derived entirely from amorphous volcanic tuff formed by a geological event about 30 million years ago. Containing potassium and silicon dioxide, ...

Volcanic tuff from thousands of kilometers away ended up here. Continental platforms are usually not conducive to preserving such material for millions of years because of intense geological ...

Yellowstone National Park's geological history is one of the most intensely studied in North America. A new geologic unit ...

Scientists have found previously undocumented ash deposits buried beneath the Lava Creek Tuff in Wyoming — and at least one of them could be from an unknown volcanic eruption, they say.

Volcanic tuff may have glittery mica along its surface, making it appear especially beautiful in sunlight. If you are unable to find a diamond during your visit, ...

Tuff includes microscopic particles of zircon, which makes it possible to determine the absolute age of rocks. After seven years of work, the key finding was made near the Vetluga River in Northern ...

For this project, Valerie examined the Peach Spring Tuff Deposit through geology and computer science lenses. Here is what Valerie had to say about the experience: What I Did: "This summer's research ...

The volcanic tuff and basalt contact along Profile 1 are visible in this image (Fig. 5). Resistivity data also show a crater-like anomaly between stations at 240 and 440 ft, ...

When Ruff compared the images to an online library with images of rocks on Earth, he came across volcanic rocks with similar textures and that looked very similar to those in the mosaics from Mars ...