Type of deposits Pathfinder element Gold- Silver vein type, Gold- Silver- Cobalt- Copper- Zinc and complex sulfide ores As W- Be- Zn- Mo- Cu- Pb- Skarns,Sn- Ba veins B Cu- Pb- Zn- Silver & Complex sulfide deposits Hg, Zn Ba- Ag vein deposit, Porphyry Cu Mn Wolframite- Tin contact metamorphic deposits Mo Porphyry Cu, Barium- […]
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Dry-line is a boundary that separates a moist air mass from a dry air mass. Also called a “Dew point front” because shape changes in dew point temperature can be observed across a dry line. Drylines are most commonly found just east of the Rocky Mountains, separating a warm, moist air mass to the east
Feldspars are the abundant minerals that occurs in igneous rocks, and alumina is one of the most important element in the feldspars. Thus alumina saturation is based on weather there is an excess or lack of Al to make up the feldspars – Based on the relative amount of K2O, Na2O, CaO and Al2O3 the
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The oceans transport vast amounts of water, heat and salt across entire ocean basins and from low to high latitudes. As the ocean basins the gateways between them evolve over tectonic timescale, so does the circulation. These tectonic induced changes in ocean circulation plays an important role in some of the major climatic events. These
Polar Stratospheric Clouds are clouds in the winter polar stratosphere at latitudes of 15,000-25,000 m. The stratosphere is very dry, it rarely allows to form clouds. These high altitude clouds form only at very low temperatures helps destroy ozone in two ways : By providing surface to reactive chlorine, and removing nitrogen that moderates chlorine
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Wind is the movement of air, caused by the uneven heating of the Earth by the sun and the Earth’s own rotation. Winds range from light breezes to natural hazards such as hurricanes and tornadoes. Generally on the basis of scale wind is classified into 5 types – Molecular and eddy viscosity :- When a fluid
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Rainfall is the amount of precipitation, in the form of rain (water from clouds), that descends onto the surface of Earth, whether it is on land or water. Based on the source of uplifting of air, there are three main types of rainfall – Convectional Rainfall :- Frontal Rainfall :- This type of precipitation is associated
An unusual warming event known as Sudden Stratospheric Warming (SSW) has been observed over Antarctica and Arctic which is also found to be linked with an ozone hole shrinking over the pole. SSW refers to this warming in the stratosphere, a rapid warming (up to about 50-°C in just a couple of days), between 10
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Sediment can be consist of either mineral or fossil particles, and both types can be found in many places on the bottom of the sea. Classification of marine sedimentation :- The sedimentation can be subdivided on the basis of the size of the particles or on the basis of their mode of formation. Factors that
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The oceanic mixed layer (OML) is the ocean region adjacent to the air-sea interface and is typically tens of meter deep and due to the fact that it is well mixed, the temperature and salinity are fairly uniform. The rapidly changing below these uniform regions of temperature , salinity and density are called thermocline, halocline
