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
What kind of volcano is Mount Pinatubo?
Geologystratovolcanostratovolcano in the Philippines. Why is Mount Pinatubo a stratovolcano? Pinatubo, a large volcano on the Philippine isle of Luzon, is a stratovolcano, or composite volcano. Stratovolcano is the name given to volcanoes whose repeated eruptions have left layers of volcanic materials built-up on top of each other, forming a mountain. What type of volcano
How does a convection cycle work?
GeologyConvection currents form because a heated fluid expands, becoming less dense. The less-dense heated fluid rises away from the heat source. As it rises, it pulls cooler fluid down to replace it. This fluid in turn is heated, rises and pulls down more cool fluid. How does convection work simple? Natural convection occurs when fluids
Is Limestone a masonry?
GeologyWhy locally quarried limestone is ideal as masonry stone. Lincolnshire limestone is a great choice for masonry stone. It brings warmth, beauty and intrigue to buildings. What type of rock is limestone? sedimentary rock Limestone is a sedimentary rock composed principally of calcium carbonate (calcite) or the double carbonate of calcium and magnesium (dolomite). It
What is the difference between cementation and compaction?
GeologyCompaction is the squeezing of sediments by the weight of the rocks and sediments above them. Cementation is when cement from fluids bind sediments together. What is the difference between compaction and cementation of sedimentary rock? Compaction is when sediment is pushed together by the weight of water and other sediment pushing down on it.
How do you get to Lassen Volcanic National Park?
GeologySR 89 passes immediately adjacent to the base of Lassen Peak. There are five vehicle entrances to the park: the north and south entrances on SR 89; and unpaved roads entering at Drakesbad and Juniper Lake in the south, and at Butte Lake in the northeast. Where do you fly into for Lassen Volcanic National