/ reply You need to login before you can answer. It is not uncommon that some species have repeated names such as Lutra Lutra, Bombus Bombus, Turdus Turdus, Lupus Lupus etc. When it is necessary to use a Latin name, follow the standard practice.t is not uncommon that some species have repeated names such as Lutra Lutra, Bombus Bombus, Turdus Turdus, Lupus Lupus etc. When it is necessary to use a Latin name, follow the standard practice.
A sample of gneiss from the site of the Earth's oldest dated rocks (the Acasta River area of Canada). This sample has been dated at 4.03 billion years old.
You are here: Home / Maps & Publications / Survey Notes / Glad You Asked / Glad You Asked: How Do Geologists Know How Old a Rock Is? How Do Geologists Know How Old a Rock Is? By Mark Milligan Geologists generally know the age of a rock by determining the age of the group of rocks, or formation, that it is found in.