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THE RELATIVE AND ABSOLUTE DATING WERE USED TO DETERMINE THE SUBDIVISION OF GEOLOGIC TIME  RELATIVE DATING Relative dating is a method used by geologists and paleontologists to determine the chronological order of geological events and the age of rock layers without necessarily...

THE RELATIVE AND ABSOLUTE DATING WERE USED TO DETERMINE THE SUBDIVISION OF GEOLOGIC TIME  RELATIVE DATING Relative dating is a method used by geologists and paleontologists to determine the chronological order of geological events and the age of rock layers without necessarily determining their absolute age in years.  ABSOLUTE DATING Absolute dating is a scientific method used to determine the actual age of rocks, fossils, and other geological features. This technique is crucial for subdividing geologic time into distinct periods, epochs, and ages. THE EARTHS HISTORY CAN BE INTERPRETED FROM THE GEOLOGIC TIME SCALE  The geologic time scale (GTS) is a system that organizes Earth’s history into a chronological framework, allowing scientists to understand the timing and relationships of events in Earth’s past. It is divided into several hierarchical categories: eons, era, period, and epoch. Phanerozoic EON the current geologic eon in the geologic time scale. Precambrian Eon refers to the earliest part of the Earth’s history  Precambrian Eon Earliest part of the Earth’s history has divided into three eons the Hadean eon, Archean eon and Proterozoic eon  Precambrian Eon HADEAN EON The Hadean is the first and oldest of the four known geologic eons of Earth's history, starting with the planet's formation about 4.6 billion years ago  Precambrian Eon ARCHEAN EON Between 4 billion and 2.5 billion years ago, the first form of life on our planet was created in the oceans.  Precambrian Eon PROTEROZOIC EON Also called the “age of life” started 2.5 billion years ago. In this time, Enough shield rock had formed to start recognizable geologic processes such as plate tectonics.  Phanerozoic Eon The time in which abundant animal and plant life has existed.It covers 541 million years ago to the present The Phanerozoic Eon is subdivided into three Era the Paleozoic Era, Mesozoic Era and Cenozoic Era  Paleozoic Era the era ran from about 542 million years ago to 251 millions years ago.  Amphibians, Reptiles and cenifers plants } Carboniferous period Atmosphere oxygen } Age of fishes. fishes become dominant creatures Age of invertebrates like } trilobited & cephalopods trilobited  Amphibians, Reptiles and cenifers plants } Carboniferous period Atmosphere oxygen } Age of fishes. fishes become dominant creatures Age of invertebrates like } trilobited & cephalopods  Amphibians, Reptiles and cenifers plants } Carboniferous period Atmosphere oxygen } Age of fishes. fishes become dominant creatures Age of invertebrates like } trilobited & cephalopods  Amphibians, Reptiles and conifers plants } Carboniferous period Atmosphere oxygen } Age of fishes. fishes become dominant creatures Age of invertebrates like } trilobited & cephalopods  Mesozoic Era contains the Triassic, Jurrasic and Cretaceous period.  Triassic Period 252 million - 200 million year ago. This period saw the rise of reptiles and the first dinosaurs  Jurassic Period 200 million - 145 million year ago. This period marked by the presence of dinosaurs and the first appearence of birds.  Cretaceous Period 145 million - 66 million year ago. This period also known for its iconic dinosaurs, such as triceratops, and pterosaurs such as pteranodon  Cenozoic Era divided into Paleogene, Neogene and Quaternary  Paleogene Period (65 million - 23 million years ago) consists of the Paleocene, Eocene and Oligocene epochs  Neogene Period (23 million - 2.6 million years ago) include the Miocene and Pliocene epochs  Quaternary Period (2.6 million - to the present year) consisting of the Pleistocene and Holocene epochs THANK YOU QUIZ