Geological Time Scale

The geological time scale is a division of Earth’s history into time slices that corresponds to geological strata. The largest time slice is the Supereon, which is further divided into Eons, Eras, Periods, Epochs, and Ages, respectively. Since the late 17th century, researchers have gathered  huge amounts of knowledge regarding Earth’s history including for example: evolution of life, ancient ecosystems,  sedimentology, paleoclimate, plate tectonics, volcanism, paleomagnetism, etc. This data constitute the framework for our understanding of Earth’s history, however, doesn’t give insights of our planets history in an astronomical perspective. The AGB project aims at adding this missing piece to the knowledge puzzle. We are currently adding a new parameter to the geological time scale – the cosmic influx during Earth’s history. We regard the twelve periods in the Phanerozoic as “windows” through which we will have a unique glimpse of the dominant extraterrestrial material falling onto Earth at that specific time period. This gives us clues regarding the constellation of the asteroid belt and events in the solar system and how this affected Earth.