GEOG 1030 Lecture 2: EARTH MATERIALS AND TOPOGRAPHY
10 May 2016
School
Department
Course
Professor
Document Summary
Geomorphology- the study of the shape of the earth"s features and how they change over time. Uniformitarianism - is the idea that the same geologic processes we can observe today have operated since the beginning of the earth"s history. o. Same cycles and forces that shape the earth today can help us understand how the. Time scale: geologic timescale- the time frame of geologic events that divides the 4. 5 billion years since the earth formed into eons, eras, and periods. Eons are the vast chunks of time divided into eras, which are divided into periods. Eons: (oldest) priscoan - archaean - proterozoic - phanerozoic (present) Eras: in phanerozoic; paleozoic - mesozoic - cenozoic (present: radiometric dating - a method of determining the geologic age of a rock or mineral by measuring the proportions of certain of its elements in their different isotopic forms.
