Amphibole is an important group of dark-coloured, rock-forming silicate minerals, including horn blende, the commonest.
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Amphibole is an important group of dark-coloured, rock-forming silicate minerals, including horn blende, the commonest.
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Foliation in geology refers to repetitive layering in metamorphic rocks. Each layer can be as thin as a sheet of paper, or over a meter in thickness. The word comes from the Latin folium, meaning “leaf”, and refers to the sheet-like planar structure. It is caused by shearing forces,or differential pressure.
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The Proterozoic is a geological eon spanning the time from the appearance of oxygen in Earth’s atmosphere to just before the proliferation of complex life on the Earth.
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In geography, the antipode of any spot on Earth is the point on Earth’s surface diametrically opposite to it. A pair of points antipodal to each other are situated such that a straight line connecting the two would pass through Earth’s center. Antipodal points are as far away from each other as possible.
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A fossil is any preserved remains, impression, or trace of any once-living thing from a past geological age. Examples include bones, shells, exoskeletons, stone imprints of animals or microbes, objects preserved in amber, hair, petrified wood, oil, coal, and DNA remnants.
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Clay is a type of heavy wet soil that becomes hard when it is baked in a kiln (=oven), used for making cups, plates, and other objects
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A globe is a spherical model of Earth, of some other celestial body, or of the celestial sphere. Globes serve purposes similar to some maps, but unlike maps, do not distort the surface that they portray except to scale it down. A model globe of Earth is called a terrestrial globe.
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Geopolitics is the study of the effects of Earth’s geography on politics and international relations.
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Geography is a field of science devoted to the study of the lands, features, inhabitants, and phenomena of the Earth and planets.
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Earth science or geoscience includes all fields of natural science related to the planet Earth. This is a branch of science dealing with the physical constitution of the Earth and its atmosphere. Earth science is the study of our planet’s physical characteristics, from earthquakes to raindrops, and floods to fossils.
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