Types of relative dating
The diagram right shows two distinct faunal assemblages.What can be deduced from our two distinct faunas in terms of their usefulness in the relative dating of rocks?A note about listicles: So we know a lot of people hate listicles and associate them with cheap, low-quality, traffic-driving, link-bait articles.But here’s the thing—a list is a great format for an article, and a format I was using on my old blog almost 10 years ago.Towards the bottom of the mountain in the orange zone, you have your Tier 3 friends—your Not Really friends.
A third fact emerges from the study of stratigraphy - the UNCONFORMITY.
The laws of physics and chemistry that governed geologic processes in the past are the same as those that govern processes now and in the future.
The geologic timescale is a chronology (calendar) of events on Earth based on obtaining ages of past events.
These ages have been derived from relative dating and absolute dating (radiometric dating) of rock layers and fossils.
(a) Relative Dating This technique uses principles of stratigraphy (rock strata) and the study of fossils (palaeontology) to determine the relative ages of rocks and sediments. Field geologists' rely on a number of simple techniques for dating rocks and constructing geological successions. The Law of Strata Identified by Fossils is a little bit more complex.