(SAN FRANCISCO) — A man injured within the second massive rockfall in two days at Yosemite was driving out of the nationwide park when rock and rubble broke by way of the sunroof of his SUV, hitting him within the head, his spouse mentioned. Yosemite Nationwide Park officers stated the rock that fell Wednesday was one in every of seven successive rockfalls that occurred over a 4-hour period that day on the southeast face of El Capitan, one of many world’s most famously scaled granite monoliths.
While the reason for the rock fall will never be recognized, Stock stated the break was in all probability attributable to the growth and contraction of the monolith’s granite as it heats up throughout the summer season and will get cold and extra brittle within the winter.
5 Over 700 sorts of igneous rocks have been described, most of them having shaped beneath the floor of Earth ‘s crust These have various properties, relying on their composition and the temperature and strain circumstances wherein they were fashioned.
Igneous rock (derived from the Latin phrase igneus meaning of fireplace, from ignis meaning fireplace) varieties by the cooling and solidification of magma or lava This magma can be derived from partial melts of pre-present rocks in either a planet ‘s mantle or crust Typically, the melting of rocks is brought on by a number of of three processes: a rise in temperature, a decrease in pressure, or a change in composition.
Shortened from rock and roll For the reason that which means of rock has tailored to mean a simpler, more fashionable, steel -like style, rock and roll has typically been left referring to earlier varieties similar to that of the Fifties, notably more swing -oriented model.