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Sterling Silver Oxidized Aztec Calendar Dome Band, 11/16" (17mm) wide, size 7.5 Sale Price: $55.24  |
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This Ring is hand-crafted from Solid Sterling Silver. The quality of this piece of jewelry is Outstanding and comes with a very good weight. Sizes are available from 6 to 14, including Half Sizes. |
Oxidized Band
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10 points up for grabs!!! paraphrase...?
I'm so stuck. I'm completely lost! T-T
Can someone please please help by parapharsing this paragraph!
In Australia iron ore is won from three main sources: pisolite "channel iron deposit" ore derived by mechanical erosion of primary banded-iron formations and accumulated in alluvial channels such as at Pannawonica, Western Australia; and the dominant metasomatically-altered banded iron formation related ores such as at Newman, the Chichester Range, the Hamersley Range and Koolyanobbing, Western Australia. Other types of ore are coming to the fore recently, such as oxidised ferruginous hardcaps, for instance laterite iron ore deposits near Lake Argyle in Western Australia.
OK:
Pisolite is a mineral form made up of small rounded nodules. It is often the result of long-term weathering of iron and aluminium rich bedrock, such as in the formation of bauxite deposits. It can also apply to a particular form of calcite deposit. In your case, it refers to a particular form of iron ore that has been produced from the long-term weathering of banded iron formation rocks.
Metasomatic alteation refers to hydrothermal or sub-hydrothermal weathering through the action of circulating waters.
Banded iron formation is a particular rock formation formed in proterozoic times; thought to have been deposited when the earth's atmosphere was different to what it is today. It often consists of alternating layers of iron oxide abd chert (silica). It is not a suitable iron ore in itself; as it contains too much silica.
What happens id that the circulating groundwater chemically alters the banded ironstone, leaving the silica and transporting the iron rich minerals to the surface; where they are deposited as small concretions or pisolites.
This is a common weathering affect today in tropical climates, and is simillar to lateritisation.
In summary, the Banded iron formations get weathered by goundwater, and the iron rich minerals get transported to the surface; where they are deposited as pisolitic concretions.
These concretions later get eroded away themselves, and are deposited in alluvial channels.
In some cases, such as at Mt Newman, the altered banded ironstone do not get re-eroded. The third type of ferruginous hardcap are iron rich alteration caps which later become oxidised. They remain in place, and are not transported. These are also common at the surface layer of many ore bodies.
Al these terms can be found in Wikipedia.
Climate Change
In this present age, Global warming is a vulnerable trend of phenomenon to the earth atmospheric effect which has been causing in influence of abnormal behavior of the climatic change. Greenhouse gases are responsible for increasing global warming in the earth. Greenhouse gases are gases in an atmosphere that they absorb and emit radiation within the thermal infrared range of wavelength bands. This phenomenon is the fundamental cause of the greenhouse effect. The main greenhouse gases in the Earth's atmosphere are water vapor, carbon dioxide, methane, nitrous oxide, and ozone. In the solar system, the atmospheres of Venus, Mars and Titan also contain gases that cause greenhouse effects. Greenhouse gases greatly affect the temperature of the Earth; without them, Earth's surface would be on average about 33 °C (59 °F) colder than at present. The concentration of carbon dioxide and other green house gases like methane, nitrous oxide and CFC have been increasing since the human activity begins about 1750. Measured atmospheric concentrations of carbon dioxide are currently 100 ppmv higher than pre-industrial levels. Since the beginning of the Industrial Revolution in the year of 1970, the concentrations of most of the greenhouse gases have increased. For example, the concentration of carbon dioxide has increased by 1998 is about 36% to 380 ppmv, methane gas 150% to 1045 ppb, Nitrous oxide 16% to 44 ppb and CFC-12 is 552 ppt. The sharp acceleration in CO2 emissions since 2000 to more than a 3% increase per year is a matter of seriousness for the world climate and her communities.
Carbon Di Oxide emission is most vulnerable compound which has influenced in increasing of the earth atmospheric temperature. This is absolutely true that the existing rate of emission of carbon di oxides will definitely affect the large numbers of world people and biotic environment. If we analyse the Carbon DI Oxide emission (in thousands of metric tons) is greater than 50,000 metric tons by the countries then it can be expressed that 22 countries of Asia Continent emits 10,941,457 metric ton. On the other hand, 2 countries of North America emit 6,688,838 metric tons, 21 countries of Europe emit 5,682,483 metric tons; 5 countries of South America emit 1,137,860 metric tons; 4 countries of Africa emit only 769,208 metric tons and Australia emits 326,752 metric tons. Based on these countries emissions it can be expressed that Asia , North America and Europe are the countries whose emits more carbon di oxides than the others countries. Based on matrix of 50,000 metric tons of emission by the countries it may be stated that World’s 6.70 % of Europe land emits more carbon di oxide which was followed by 16.30 % Land of North America and 30 % land of Asia.
Coming to the countries emit more carbon di oxide in the world is USA which emits 6,049,435 metric tons, China emits 5,012,377 metric tons, Russia emits 1,524,993 metric tons, India emits 1,342,962 metric tons and Japan emits 1,257,963 respectively. In general the developed countries are contributing more carbon di oxide to the atmosphere than the developing countries except China and India. But if we see the figure of India and China’s emission rate is quite difference between the two in terms of metric tons.
Moreover developed countries can cut emission through using advance technology keeping constant producing of energy. In this regard, USA, Russia, Japan and China can contribute a lot to build healthy environment in the world so that others parts of the world can be saved from the trend of increasing rate of temperature which will cause for melting of ice in the upper reaches of Himalaya, Alpine Mountains besides the Greenland’s and will increase the sea level in the coming days. This is the high time to save the world together from the ongoing disturbance of vulnerable ecological and iso-static balance. Hope Copenhagen summit will definitely be able to find out a suitable equation to balance the emission of carbon di oxide after considering of globalization of socio-economic and equi-political consideration.
In this present age, Global warming is a vulnerable trend of phenomenon to the earth atmospheric effect which has been causing in influence of abnormal behavior of the climatic change. Greenhouse gases are responsible for increasing global warming in the earth. Greenhouse gases are gases in an atmosphere that they absorb and emit radiation within the thermal infrared range of wavelength bands. This phenomenon is the fundamental cause of the greenhouse effect. The main greenhouse gases in the Earth's atmosphere are water vapor, carbon dioxide, methane, nitrous oxide, and ozone. The concentration of carbon dioxide and other green house gases like methane, nitrous oxide and CFC have been increasing since the human activity begins about 1750. Measured atmospheric concentrations of carbon dioxide are currently 100 ppmv higher than pre-industrial levels. Since the beginning of the Industrial Revolution in the year of 1970, the concentrations of most of the greenhouse gases have increased. For example, the concentration of carbon dioxide has increased by 1998 is about 36% to 380 ppmv, methane gas 150% to 1045 ppb, Nitrous oxide 16% to 44 ppb and CFC-12 is 552 ppt. The sharp acceleration in CO2 emissions since 2000 to more than a 3% increase per year is a matter of seriousness for the world climate and her communities.
Carbon Di Oxide emission is most vulnerable compound which has influenced in increasing of the earth atmospheric temperature. This is absolutely true that the existing rate of emission of carbon di oxides will definitely affect the large numbers of world people and biotic environment. If we analyse the Carbon DI Oxide emission (in thousands of metric tons) is greater than 50,000 metric tons by the countries then it can be expressed that 22 countries of Asia Continent emits 10,941,457 metric ton. On the other hand, 2 countries of North America emit 6,688,838 metric tons, 21 countries of Europe emit 5,682,483 metric tons; 5 countries of South America emit 1,137,860 metric tons; 4 countries of Africa emit only 769,208 metric tons and Australia emits 326,752 metric tons. Based on these countries emissions it can be expressed that Asia , North America and Europe are the countries whose emits more carbon di oxides than the others countries. Based on matrix of 50,000 metric tons of emission by the countries it may be stated that World’s 6.70 % of Europe land emits more carbon di oxide which was followed by 16.30 % Land of North America and 30 % land of Asia.
Coming to the countries emit more carbon di oxide in the world is USA which emits 6,049,435 metric tons, China emits 5,012,377 metric tons, Russia emits 1,524,993 metric tons, India emits 1,342,962 metric tons and Japan emits 1,257,963 respectively. In general the developed countries are contributing more carbon di oxide to the atmosphere than the developing countries except China and India. But if we see the figure of India and China’s emission rate is quite difference between the two in terms of metric tons.
Moreover developed countries can cut emission through using advance technology keeping constant producing of energy. In this regard, USA, Russia, Japan and China can contribute a lot to build healthy environment in the world so that others parts of the world can be saved from the trend of increasing rate of temperature which will cause for melting of ice in the upper reaches of Himalaya, Alpine Mountains besides the Greenland’s and will increase the sea level in the coming days. This is the high time to save the world together from the ongoing disturbance of vulnerable ecological and iso-static balance. Hope Copenhagen summit will definitely be able to find out a suitable equation to balance the emission of carbon di oxide after considering of globalization of socio-economic and equi-political consideration.
About the Author
Author is a Geologist and expertised in Remote Sensing & GIS technology and has interested to carry out the work in the field of Municipal GIS and Urban Planning.