EESA06H3 Lecture 6: EESA06 - Introduction to Planet Earth Lecture 6
16 Feb 2012
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Document Summary
Fossils helps us figure out how life was like millions of years ago. Minerals found in the hot water replace the hard shell over time, forming a fossil: this process is known as mineralization, uplifting allows for the fossils to be moved up to the surface. Ammolite (aragonite: colored by minerals and elements such as fe, mn, al and ba. Fossils and stratigraphy: geologic range the span of time in which something lived in, most useful fossils are widespread over the planet and short-lived. Sir james dawson famous canadian geologist that that identified a mineral as a fossil. Chemosynthesis and photosynthesis: chemosynthesis use of chemicals to obtain energy, photosynthesis use of sunlight to obtain energy. Algae released oxygen and formed an atmosphere in which we can live in. During the cambrian explosion, the super continent rodinia broke up: formation of shallow shorelines new habitats for creatures to inhabit, tectonic stability - north america was surrounded by passive margins during the.
