Word: magma
(lookup in dictionary)
(lookup stats)
Dates: all
Sort By: most recent first
(reverse)
...copper settlement, between Magma Copper Co. and negotiators for a coalition of two dozen unions, gives 3,000 Magma workers a 31% increase over the next three years. At week's end some 32,000 workers, represented by the United Steelworkers of America (U.S.W.), were still on strike against other copper companies, but both sides were expected to accept the Magma package...
...Magma. Etna's fireworks have provided Europeans with one of the most exciting spectacles in years, and tourists flooded to the region. There were also more serious visitors: the numerous volcanologists and other earth scientists who are clambering over Etna's slopes, hoping to learn more about the processes at work inside the mountain. Most volcanoes lie near the meeting place of the massive, slow-moving plates that are believed to make up the earth's outer shell. Their crunching movements apparently cause cracks in the earth's crust that enable hot material known as magma...
...Pozzuolians find their slow-motion earthquake puzzling, so do scientists at the University of Naples' Institute of Earth Sciences. They speculate that the dramatic changes have been caused by a sudden shifting of subterranean masses of molten rock, or magma, that well up from deep inside the earth through fractures in its crust. As the magma presses into new regions, it raises the earth on top of it. At the same time, land some distance away may gradually subside to fill the area vacated by the molten rock. That could account for a six-inch drop in the level...
...Costa Rica, Mount Arenal had been quiet for nearly five centuries, its graceful cone plugged solidly with ages-old magma. Without warning one afternoon, Arenal blew a huge hole in its flank. Vaporized magma shot out at 1,472° F. and incandescent gas soared thousands of feet into the sky. Red-hot volcanic ash spread for miles across rich cattle-raising land, piling three feet deep in places. At least 78 people died, and further disaster struck searchers for the 100 or more still missing when a sudden sheet of flame engulfed a carload of rescuers, incinerating...
Prospecting for Steam. The largest and most accessible steam fields are located west of the Rockies, where volcanic activity has brought molten, lava-like rock known as magma close to the earth's surface. The 1,500° F. magma either releases its own trapped water as steam or, like a gigantic coffee percolator, vaporizes water that has seeped down into the earth...