GENERAL GEOLOGY

Detailed explanation-1: -Absolute age refers to the specific number of years or age range that have passed since the rock has formed. It is determined based on the radioactive decay of isotopes of certain elements such as carbon-14 and potassium-40.

Detailed explanation-2: -The age of a rock in years is called its absolute age. Geologists find absolute ages by measuring the amount of certain radioactive elements in the rock. When rocks are formed, small amounts of radioactive elements usually get included.

Detailed explanation-3: -The relative age of a rock is its age compared to the ages of other rocks. The absolute age of a rock is the number of years since the rock formed. It can be difficult to determine the absolute age of a rock, particularly a sedimentary rock made of sediments from different source rocks.

Detailed explanation-4: -Absolute dating places events or rocks at a specific time. If a geologist claims to be younger than his or her co-worker, that is a relative age. If a geologist claims to be 45 years old, that is an absolute age.

Detailed explanation-5: -Absolute dating methods determine how much time has passed since rocks formed by measuring the radioactive decay of isotopes or the effects of radiation on the crystal structure of minerals. Paleomagnetism measures the ancient orientation of the Earth’s magnetic field to help determine the age of rocks.