geology question

Jun 30th, 2015
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1. Define: eustatic, biostratigraphy, geochronology, half-life. a. Eustatic: Global. b. Biostratigraphy: The study of the relationships in time among groups of organisms. c.Geochronology: The science of determining the age (in years) of the Earth. Adjectival form of the word geochronological. Practitioners of geochronology are, not surprisingly, geochronologists.

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Chapter 21. Define: eustatic, biostratigraphy, geochronology, half-life.a. Eustatic: Global.b. Biostratigraphy: The study of the relationships in time among groups of organisms.c. Geochronology: The science of determining the age (in years) of the Earth. Adjectival form of the word geochronological. Practitioners of geochronology are, not surprisingly, geochronologists. d. Half-Life: The amount of time that it takes for 50% of a volume of unstable isotope to decay.2. What is the difference between "numerical" dates and relative ages? Absolute dating is the process of determining an age

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