Автор работы: Пользователь скрыл имя, 25 Ноября 2015 в 13:08, реферат
USA provided by oil, natural gas, uranium ores, iron, titanium, vanadium, copper, lead, zinc, molybdenum, tungsten, beryllium, lithium, gold, silver, phosphates, potassium salts, boron, fluorite, sulfur, barite. At the same time, the country has almost no own reserves of manganese and chrome ore, gas, bauxite ores of nickel, cobalt, mercury, antimony, tin, tantalum and niobium, asbestos. Reserves of copper, manganese, nickel, cobalt, etc. can be significantly increased through the use of low-grade ores and ores from the ocean floor. With 40 main kinds of minerals only 18 US self-sufficient in 50% or more.
Introduction…………………………………………………………..…… 2
I. Natural resources of USA and their details………………………...…… 4
II. The World natural resources…………………………………………… 11
III. Conclusion …...……………………..………………………………... 19
IV List of the literature…………………………………………………… 20
They are traditional owners of land. They claimed much of ‘their land’ back under the Aboriginal Land Rights (NT) Act 1976. They claim to have sacred sites in the uranium mine area. These sites are directly and severely impacted upon by the Jabiluka uranium mine. The Mirrar believe that culturally significant sites will be damaged by the construction of the Jabiluka uranium mine. Damage to these spiritual sites destroys living tradition.
The indigenous population, with support and backing from a very much diversified global community struggled against adversity in the fight to stop the Jabaluka uranium mine and were successful in doing so. As of September 1999, all work at Jabaluka ceased indefinitely which has effected resource by reducing supply.
Gold
This list of countries by gold production for 2014.
For many years until 2006, South Africa was the world's dominant gold producer, but recently, other countries with large surface area have surpassed South Africa, including China, Russia, the United States, Peru and Australia, although none have approached South Africa's peak production which occurred in the 1970s.
Note the figures are for primary production, in the US, for example, for the years 2010-14, new and old scrap exceeded both primary production and reported domestic consumption.
Rank |
Country or region |
Gold production (metric tons) in 2014 |
World (rounded) |
2,860 | |
1 |
China |
450 |
2 |
Australia |
270 |
3 |
Russia |
245 |
4 |
United States |
211 |
5 |
Canada |
160 |
6 |
Peru |
150 |
7 |
South Africa |
150 |
8 |
Uzbekistan |
102 |
9 |
Mexico |
92 |
10 |
Ghana |
90 |
11 |
Brazil |
70 |
12 |
Indonesia |
65 |
13 |
Papua New Guinea |
60 |
14 |
Chile |
50 |
Rest of the world |
695 |
Oil
Oil reserves are the amount of technically and economically recoverable oil. Reserves may be for a well, for a reservoir, for a field, for a nation, or for the world. Different classifications of reserves are related to their degree of certainty.
The total estimated amount of oil in an oil reservoir, including both producible and non-producible oil, is called oil in place. However, because of reservoir characteristics and limitations in petroleum extraction technologies, only a fraction of this oil can be brought to the surface, and it is only this producible fraction that is considered to be reserves. The ratio of reserves to the total amount of oil in a particular reservoir is called the recovery factor. Determining a recovery factor for a given field depends on several features of the operation, including method of oil recovery used and technological developments.
Based on data from OPEC at the beginning of 2013 the highest proved oil reserves including non-conventional oil deposits are in Venezuela (20% of global reserves), Saudi Arabia (18% of global reserves), Canada (13% of global reserves), and Iran (9%).
Because the geology of the subsurface cannot be examined directly, indirect techniques must be used to estimate the size and recoverability of the resource. While new technologies have increased the accuracy of these techniques, significant uncertainties still remain. In general, most early estimates of the reserves of an oil field are conservative and tend to grow with time. This phenomenon is called reserves growth.
Many oil-producing nations do not reveal their reservoir engineering field data and instead provide unaudited claims for their oil reserves. The numbers disclosed by some national governments are suspected of being manipulated for political reasons.
BBL = barrel of oil
Countries with largest oil reserves
Most of the world's oil reserves are in the Middle East.[17]
Summary of Proven Reserve Data as of 2012[2] | ||||||
— |
Country |
Reserves[18] |
Reserves |
Production[19] |
Production |
Reserve/ Production Ratio1 |
1 |
Venezuela |
296.50 |
47.140 |
2.1 |
330 |
387 |
2 |
Saudi Arabia |
265.40 |
42.195 |
8.9 |
1,410 |
81 |
3 |
Canada |
175.00 |
27.823 |
2.7 |
430 |
178 |
4 |
Iran |
151.20 |
24.039 |
4.1 |
650 |
101 |
5 |
Iraq |
143.10 |
22.751 |
3.4 |
540 |
163 |
6 |
Kuwait |
101.50 |
16.137 |
2.3 |
370 |
121 |
7 |
United Arab Emirates |
97.80 |
15.549 |
2.4 |
380 |
156 |
8 |
Russia |
80.00 |
12.719 |
10.0 |
1,590 |
22 |
9 |
Libya |
47.00 |
7.472 |
1.7 |
270 |
76 |
10 |
Nigeria |
37.00 |
5.883 |
2.5 |
400 |
41 |
11 |
Kazakhstan |
30.00 |
4.770 |
1.5 |
240 |
55 |
12 |
Qatar |
25.41 |
4.040 |
1.1 |
170 |
63 |
13 |
China |
25.40 |
4.038 |
4.1 |
650 |
15 |
14 |
United States |
25.00 |
3.975 |
7.0 |
1,110 |
10 |
15 |
Angola |
13.50 |
2.146 |
1.9 |
300 |
19 |
16 |
Algeria |
13.42 |
2.134 |
1.7 |
270 |
22 |
17 |
Brazil |
13.20 |
2.099 |
2.1 |
330 |
17 |
Total of top seventeen reserves |
1,324.00 |
210.499 |
56.7 |
9,010 |
64 |
Natural resources naturally within environments (atmosphere, lithosphere, Biosphere & hydrosphere) that exist relatively undisturbed by mankind, in a natural form. A natural resource is often characterized by amounts of biodiversity existent in various ecosystems.
Natural resources are those components of environment which are inherently created by environment for supporting life. These resources are very essential for sustaining life on earth.
These resources are available in the form of air, water, mineral, soil, forest, plant, energy etc.
Информация о работе Natural resources of USA and their details