jueves, 5 de marzo de 2009

Gif Letras, Numeros y Simbolos en Rombos

Banded iron ore: A sediment consisting of layers of chert alternating with bands of ferric iron oxides (hematite and limonite) in valuable concentrations.

Barchan: A crescent-shaped sand dune moving across a clean surface with its convex face upwind and its concave slip face downwind.


BARREL:A volumetric unit of measure for crude oil and petroleum products.


Basalt: A fine-grained, dark, mafic igneous rock composed largely of plagioclase feldspar and pyroxene.
Base-level: The level below which a stream cannot erode; usually sea level sometimes locally the level of a lake or resistant formation.

Basement: The oldest rocks recognized in a given area, a complex of metamorphic and igneous rocks that underlies all the sedimentary formations. Usually Precambrian or Paleozoic in age.

Basic rock: Any igneous rock containing mafic minerals rich in iron and magnesium, but containing no quartz and little sodium rich plagioclase feldspar.

Basin: In tectonics, a circular, syncline-like depression of strata. In sedimentology, the site of accumulation of a large thickness of sediments.


Batholith: A great irregular mass of coarse-grained igneous rock with an exposed surface of more than 100 square kilometers, which has either intruded the country rock or been derived from it through metamorphism.
No se puede mostrar la imagen “http://www.tulane.edu/%7Esanelson/images/batholith.gif” porque contiene errores.

Bauxite: A rock composed primarily of hydrous aluminum oxides and formed by weathering in tropical areas with good drainage; a major ore of aluminum.


Bedding: A characteristic of sedimentary rocks in which parallel planar surfaces separating different grain sizes or compositions indicate successive depositional surfaces that existed at the time of sedimentation.


Bed-load: The sediment that a stream moves along the bottom of its channel by rolling and bouncing.


Beta-particle: An electron emitted with high energy and velocity from a nucleus undergoing radioactive decay.


B-horizon: The intermediate layer in a soil, situated below the A-horizon and consisting of clays and oxides. Also called the zone of accumulation.


Biochemical precipitate: A sediment, especially of limestone or iron, formed from elements extracted from seawater by living organisms.


Bituminous coal: A soft coal formed by an intermediate degree of metamorphism and containing 15 to 20 percent volatiles. The most common grade of coal.


Block fault: A structure formed when the crust is divided into blocks of different elevation by a set of normal faults.


Blowout: A shallow circular or elliptical depression in sand or dry soil formed by wind erosion.


Bore: To enlarge and finish the surface of a cylindrical hole by the action of a rotating boring bar (cutting tool) or by the action of a stationary tool pressed (fed) against the surface as the part is rotated.


Butte: A steep sided and flat topped hill formed by erosion of flat laying strata where remnants of a resistant layer protect the softer rocks underneath.

BYTE:Eight related bits of data or an eight-bit binary number. Also denotes the amount of memory required to store one byte of data

uploaded image: There are 8 bits in 1 byte, and 16 bits in 2 bytes. A 16-bit value is called a word.

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