question 1 (1 point)\nthe oldest rock formation identified on earth is found on the shoreline of hudson bay…

question 1 (1 point)\nthe oldest rock formation identified on earth is found on the shoreline of hudson bay in canada. this rock formation is around 4.28 billion years old. what information would have been most useful for determining the age of the rock formation?\n a the percentage of each mineral that makes up the rock\n b the thickness of younger rock layers that cover the rock\n c the amount of each radioactive element present in the rock\n d the amount of weathering present on the surface of the rock

question 1 (1 point)\nthe oldest rock formation identified on earth is found on the shoreline of hudson bay in canada. this rock formation is around 4.28 billion years old. what information would have been most useful for determining the age of the rock formation?\n a the percentage of each mineral that makes up the rock\n b the thickness of younger rock layers that cover the rock\n c the amount of each radioactive element present in the rock\n d the amount of weathering present on the surface of the rock

Answer

Brief Explanations:

Radiometric dating, which relies on the amount of radioactive elements in a rock and their decay rates, is a common method for determining the age of rocks. The percentage of minerals (a) doesn't directly give age. The thickness of younger rock layers (b) can give relative age but not absolute age precisely. Weathering (d) is related to surface - changes over time and not to determining the rock's formation age.

Answer:

C. the amount of each radioactive element present in the rock