O Oasis: A fertile area in a desert or arid land, formed due to water being present in that particular area, is known as an Oasis. Obsequent Stream: A stream that flows in a direction opposite to the original slope of the land in the area is called an obsequent stream. Occlusion: As per geographical definitions, occlusion is an atmospheric phenomenon in which a mass of cold air surrounds a mass of warm air and forces it to move upwards. If the air surrounding the mass of warm is cooler than the cold air ahead of the warm air, it is called a cold occlusion and if the air surrounding the mass of warm is warmer than the cold air ahead of the warm air it is called a warm occlusion. Ocean Basin: The part of the earths lithosphere that is taken up by the oceans comprising the ocean crust is known as the ocean basin. Ocean Current: An ocean current is the flow of surface ocean water in a definable direction. Oceanic Crust: The earths crust that is found on the ocean floor in the form of a thick mass of igneous rocks is called the oceanic crust. Oceanic Plate: A part of the earths crust that is found below sea-level and consists mainly of sima is known as the oceanic plate. Ocean Trench: An ocean trench is a deep, long, and narrow depression on the ocean floor formed due to the sliding of an ocean plate beneath another. Offshore: In geographical terms, offshore can be defined as the moving away of wind from the shore or land towards the sea. Omnivore: Omnivore, in geographical terminology, refers to people or animals who feed on both, plants as well as meat. Onshore: In geographical terms, onshore can be defined as the moving of wind away from the sea towards the shore or land. Oolith: Ooliths are tiny grains that are spherical in shape, obtained from sedimentary rocks from sea waters, composed of concentric layers of calcium carbonate. Oolitic Limestone: An oolitic limestone is a type of even textured limestone that comprises ooliths and skeletons of calcareous animals. Opencast Mining: Opencast mining is the extraction or mining of ores and minerals found close to the surface of the earth, by removing the material lying above and breaking the ore. Organic Farming: It is defined as an agricultural process of producing foods naturally without the use of synthetic pesticides and fertilizers. Instead, compost, green manure, and environmental friendly methods like crop rotation and mechanical cultivation are used for organic food production. Orogenesis: Orogenesis, in the geography terms list, is defined as the process through which mountains are formed by the folding and faulting of the earths crust. Orographic: In geography, orographic refers to anything that is related to mountains or related to the study of mountains. Outwash Plain: In geographical glossary, outwash plain is defined as a flat, sloping surface that comprises gravel and rock debris, deposited by a network of glacial streams. Overgrazing: The overfeeding of animals on vegetation cover that leads to the damage of the land, is known as overgrazing. Overland Flow: Overland flow occurs when the water flowing on the land surface flows into a body of water due to over saturation of the land that it flows on or due to rainfall exceeding infiltration. Ox-bow Lake: An Ox-bow lake is a crescent-shaped lake that is formed when one of its meanders are cut-off or isolated. Ozone Layer: A region of the earths stratosphere that contains a high concentration of ozone, which is responsible for absorbing the harmful ultraviolet radiation of the sun, is called the ozone layer.
Posted on: Tue, 27 Jan 2015 11:35:46 +0000
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