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Breckinridge Peak
The Rockefeller Mountains () are a group of low-lying, scattered granite peaks and ridges, almost entirely snow-covered, standing 30 miles (48 km) south-southwest of the Alexandra Mountains on the Edward VII Peninsula of Antarctica. Discovered by the Byrd Antarctic Expedition on January 27, 1929, they were named by Byrd for John D. Rockefeller Jr., a patron of the expedition. The geologist Laurence M. Gould and his team flew out to this mountain range in their plane; but after landing, a snow storm blew it half a mile away onto the ice, destroying it. This left them stranded for 11 days with limited food until the Byrd team in the ''Little America'' settlement could be reached and could send another plane to pick them up. These events are captured in the documentary '' With Byrd at the South Pole''. See also * Fokker Rocks, rock outcrops just south of Mount Schlossbach in the Rockefeller Mountains *Melbert Rocks The Melbert Rocks are rock outcrops close north-west of Mo ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Granite
Granite () is a coarse-grained (phaneritic) intrusive igneous rock composed mostly of quartz, alkali feldspar, and plagioclase. It forms from magma with a high content of silica and alkali metal oxides that slowly cools and solidifies underground. It is common in the continental crust of Earth, where it is found in igneous intrusions. These range in size from dikes only a few centimeters across to batholiths exposed over hundreds of square kilometers. Granite is typical of a larger family of ''granitic rocks'', or ''granitoids'', that are composed mostly of coarse-grained quartz and feldspars in varying proportions. These rocks are classified by the relative percentages of quartz, alkali feldspar, and plagioclase (the QAPF classification), with true granite representing granitic rocks rich in quartz and alkali feldspar. Most granitic rocks also contain mica or amphibole minerals, though a few (known as leucogranites) contain almost no dark minerals. Granite is nearly alway ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
