RECONSTRUCTING THE HISTORY OF EARTH

• STRATIFICATION


  It is a crustal movement, displacement of soil and distortion of terrains lead to layering of rocks.
• STRATIGRAPHY


  Is used to locate minerals, deposits, petroleum field, and ground water reservoirs
• RELATIVE DATING AND ABSOLUTE DATING


  2 TYPES OF DATING METHOD
• NICHOLAS STENO


  In the late 17th century he introduced the PRINCIPLE OF GEOLOGIC TIMESCALE; Who explained that each layer of rock could represent a "SLICE OF LIFE".
• EONS, ERAS, PERIODS, EPOCHS


  Major subdivision of Geologic Time
• PHANEROZOIC EON


  This is the most recent eon, covering the last 541 million years to the presnet. It is divided into three eras.
• PAEOZOIC, MESOZOIC, CENOZOIC


  Three eras of PHANEROZOIC EON
• PROTEROZOIC EON


  Preceding the Phanerozoic, it spans from about 2.5 billion to 541 million years ago
• CEONOZOIC ERA


  Known as the "AGE OF MAMMALS" it spans from 66 million years ago to the present.
• MESOZOIC ERA


  Often referred to as the "AGE OF DINOSAURS", it covers the time from 252 to 66 million years ago.
• PALEOZOIC ERA


  This era includes the time from 541 to 252 million years ago and witnessed the evolution of complex life forms and major geological events.
• PERIOD


  Divided which are characterized by specific geological or biological events.
• CENOZOIC


  Quaternary and Tertiary Periods
• MESOZOIC


  Cretaceous, Jurrasic, and Triassic periods
• PALEOZOIC


  Cambrian, Ordovician, Sillurian, Devonian, Carboniferous (Pennsylvanian, Mississippian), and Permian
• EPOCH


  Periods are further divided into ___, representing shorter intervals of time.
• HOLOCENE AND PLEISTOCENE EPOCHS


  Epochs of the Quarternary Period
• PLIOCENE, MIOCENE, AND EOCENE EPOCHS


  Epochs from the Tertiary Period