What is folding of rocks?
GeologyFolds result from the slow deformation of rocks. This happens deep underground where the rocks are under pressure and temperatures are higher. Folded rocks are common in mountain ranges like the Alps, Himalayas and the Scottish Highlands. Up-folds are called anticlines. What does folding mean in rocks? fold, in geology, undulation or waves in the
What is the difference between rocks and minerals?
GeologyA mineral is a naturally occurring substance with distinctive chemical and physical properties, composition and atomic structure. Rocks are generally made up of two of more minerals, mixed up through geological processes. What are three differences between rocks and minerals? A rock is inorganic and a solid naturally-formed substance without any chemical composition or atomic
What two plates caused the Nepal earthquake?
GeologyCauses. On a 7.8 earthquake struck Nepal in Asia. The earthquake occurred on a convergent collision plate boundary between the Indian and Eurasian plates. The focus was only eight kilometres deep and the epicentre was just 60 kilometres north-west from the capital Kathmandu. What were the two plates that caused the earthquake? Tectonic Plate Boundaries
What type of rock is lava?
GeologyExtrusive Igneous Rocks: These are the rocks that form at erupting volcanoes and oozing fissures. The magma, called lava when molten rock erupts on the surface, cools and solidifies almost instantly when it is exposed to the relatively cool temperature of the atmosphere. What type of rock is lava rock? extrusive igneous rocks When lava
What is black magnetic sand?
GeologyBlack sand is sand that is black in color. One type of black sand is a heavy, glossy, partly magnetic mixture of usually fine sands containing minerals such as magnetite, found as part of a placer deposit. Another type of black sand, found on beaches near a volcano, consists of tiny fragments of basalt. What
What is the center of the Earth?
GeologyAt the center of the Earth is the core, which has two parts. The solid, inner core of iron has a radius of about 760 miles (about 1,220 km), according to NASA. It is surrounded by a liquid, outer core composed of a nickel-iron alloy. Where is the exact center of the Earth? In 2003,
What is secondary rock?
GeologyRocks composed of particles derived from the erosion or weathering of preexisting rocks, such as residual, chemical, or organic rocks formed of detrital, precipitated, or organically accumulated materials; specif., clastic sedimentary rocks. What is a secondary rack? Secondary rack is a type of insulator cable support with a steel U channel at the base. The
What are some examples of a cinder cone volcano?
GeologyCinder cones may form by themselves or when new vents open on larger, existing volcanoes. Mauna Kea, a volcano on the American island of Hawaii, and Mount Etna, a volcano on the Italian island of Sicily, are both covered with hundreds of cinder cones. Is Mount Fuji a cinder cone volcano? No, Mount Fuji is
How does paleomagnetism prove continental drift?
GeologyPaleomagnetists led the revival of the continental drift hypothesis and its transformation into plate tectonics. Apparent polar wander paths provided the first clear geophysical evidence for continental drift, while marine magnetic anomalies did the same for seafloor spreading. What is paleomagnetism and how does it provide evidence for plate tectonics? Paleomagnetism also provides evidence to
How are Anthodites formed?
GeologyTheir mode of formation is not well understood, but they presumably form in air-filled chambers by the slow precipitation of calcium carbonate from thin films of water that are held to their surface by capillary attraction. Where are Anthodites found? Anthodites are found in practically every Guadalupe cave, but form particularly exquisite arrays in the