Nunavut is the newest Canadian territory that was established on April 1 1999 when it separated from the Northwest Territories (NWT)
Comprising of the central and eastern parts of the former NWT, the creation of Nunavut was the outcome of the largest aboriginal land claims agreement between the Canadian government and the native Inuit people. Most of Nunavut land is covered by snow for more than half the year. The land is primarily tundra.
Some of the challenges faced by Nunavut today are lack of job opportunities, isolation, acute housing shortage, social problems and high cost of living including sky-high food prices. The high cost of food has greatly exacerbated widespread hunger that has dogged the young nation almost since inception. Food insecurity one of the most pressing challenge facing Nunavut today.
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Radiometric dating is usually defined as a method that helps in calculating the age of rock depending on the presence of radioactive isotopes and its rate of decay. In order to calculate this, the half-life of the isotope element must be known. This method is commonly used by geologists.
The conditions that are needed to fulfill in order to determine the age of a granitic batholith are as follows-
- The rate at which these materials decay must be a constant
- There should be an exact amount of both the parent as well as the daughter elements.
- Since it is a batholith, so it has formed from the crystallization of magma at a certain depth. So, these granitic rocks must have remained within a closed system, right from the time of its formation.
The various methods of radiometric dating that can be used to date this granitic batholith are-
- Uranium-lead dating- It is an efficient method to date the rocks that are of about 4 to 4.5 billion years.
- Potassium-argon dating- It is also commonly used to date rocks that are about 4 billion years old.
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