You measure the amount of radioactive decay that is present in certain elements that were present when the rock formed from melt.
yes
its not from radioactivity its from carbon dating
yes they can they did it with aborinies
yes because its a rock
Yes, geologists can use radioactive dating to determine the absolute ages of extrusion (e.g., volcanic rock deposited on the Earth's surface) and intrusion (e.g., molten rock that has moved into existing rock formations). By analyzing the decay of radioactive isotopes within the rocks, geologists can calculate the age of these geological events.
Absolute dating of rock is achieved by radiometric dating techniques. Relative dating is achieved by determining the position of rock in strata, and the appearance of certain index fossils. Relative dating was a precursor to absolute dating. Before absolute dating techniques were discovered, the age of a rock was a guesstimate at best. Radioactive dating allows us to find an approximate date. So if something is dated about a thousand years ago plus or minus a hundred years the object may be from sometime between 1,000 and 1,200 A.D.
A scientist would use both radioactive dating and relative dating to gain a more comprehensive understanding of a rock's age. Radioactive dating provides an absolute age by measuring the decay of isotopes, while relative dating helps establish the sequence of events or the rock's position within geological layers. By combining these methods, a scientist can cross-verify findings and create a more accurate timeline of the rock's formation and the geological history surrounding it. This approach is particularly useful when dealing with complex geological formations or when absolute dating results are ambiguous.
Skonka!
Scientists use radioactive isotopes in rocks to calculate their absolute age through a process called radiometric dating. By measuring the ratio of parent isotopes to daughter isotopes in a rock sample, scientists can determine how much time has passed since the rock formed. The rate of decay of the parent isotope into the daughter isotope provides a clock that allows scientists to calculate the rock's age.
absolute dating
Radiometric dating is a method that uses the radioactive decay of isotopes in rocks and other objects to determine their age. By measuring the ratio of parent isotopes to daughter isotopes, scientists can calculate the age of the sample.
The main purpose of relative dating is to determine the sequence of events in Earth's history without assigning specific numerical ages. Radiometric dating, on the other hand, is used to determine the absolute age of rocks and minerals based on the decay of radioactive isotopes.