The monthly update from the U.S. Geological Survey Volcanoes shows what scientists have learned about the explosion at ...

A little deeper below the surface, there are fossils of Miocene-age camels, mastodons, saber-toothed cats, and countless ...

The outline of the 20cm (8 inches)-tall creature was imprinted on a long, sloping slab of quarry siltstone, surrounded by other fossil forms. It's thought all were smothered in a turbid flow of ...

Appointment of Dr. Nathan Chutas to the Board of Directors Dr. Chutas' extensive copper exploration experience aligns with ...

Complete Guide to Walnut Canyon National Monument in Arizona, including things to do, history, nearby lodging and campin ...

Compositional studies of the loess indicate that siltstone outcrops northwest of the Sand Hills were the source for the loess (Muhs et al. 2008). One model proposed to explain these loess ...

Appointment of Dr. Nathan Chutas to the Board of Directors Dr. Chutas' extensive copper exploration experience aligns with ...

The Supai Group, consisting of deep-red siltstone, limestone, and sandstone, is 600 to 700 ft thick. Within these layers are marine fossils, including brachiopods, corals, crinoids, and gastropods.

Clean Royalties, an affiliate of Houston-based Siltstone Capital, will serve as the stalking-horse bidder in a Section 363 ...

which in both cases is made up of slate, quartzite or siltstone, limestone and schist of varying kind.

As of the end of 2023, the extent of the N-S zone, defined by the contact between andesite and siltstone units of the ...