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For example, it is believed that during a particular episode the land surface was raised in one part of the world to form high plateaus and mountain ranges.After the uplift of the land, the forces of erosion attacked the highlands and the eroded rock debris was transported and redeposited in the lowlands.Because fossils are believed to record the slow but progressive development of life, geologist use them to identify the relative age of rocks throughout the world.From the results of studies on the origins of the various kinds of rocks (petrology), coupled with studies of rock layering (stratigraphy) and the fossils they contain (paleontology), geologists have associated layers of rocks with sequence of events thought to have occurred over hundreds of millions of years.
Wide rings are produced during wet years and narrow rings during dry seasons.
1.) The incident that drove the dinosaurs to extinction.
Its only relatively dated to be between certain months and a specific year. You can draw a rough timeline of past events by looking at soil composition through the earth.
This technique has posed a different problem for creationists, as this dating method does not make use directly of accelerated decay.
By using dendrochronology scientists have dated certain living trees to having ages of around 4600 years.