STATEN ISLAND, N.Y. -- While ancient serpentinite -- found from St. George to the LaTourette golf course -- forms our Island's backbone, it isn't the only kind of rock found here. Serpentinite is a ...

Whether you’re heading to your local indoor wall to escape the British weather, or are lucky enough to decamp to sunnier climes (and climbs), you’ll likely need some new gear. If you’re a seasoned pro ...

Rocks and stones are important in landscape design. They are practical for providing boundaries, edges, and walkways. They are also aesthetically pleasing, supplying textural interest and contrast to ...

IN collaboration with Prof. A. Holmes, I have already published estimates of the ages of the Whin Sill and the Cleveland Dyke based on the helium ratios of these rocks (NATURE, May 25, 1929, p. 794).

RECENTLY a number of new analyses using neutron activation and isotope dilution techniques have been reported for uranium and thorium in certain basic rocks (that is, eclogites) and ultra-basic rocks ...