PPT-Geologic Time and Fossil Formation

Utahs geology has changed over time Notice where North is in th is p icture 550 Million Years Ago Present Day The Early Years Paleozoic Utah was at the edge of North America The eastern part of the state was flat and low close to sea level Coral reefs became thick . Chapter 7 lesson 4. What is the geologic time scale?. Geologists use the geologic time scale to show Earth’s history.. It is a record of the geologic events and the evolution of life forms as shown by the fossil record.. In depth: chapter 19. Geologic Time Scale. Examining layers of sedimentary rock, scientists have put together a chronology of Earth’s history.. It is divided into 4 Eras:. 1. Precambrian (3.5 . bya. Geological “Clocks”. Geologic time determination is subdivided into 2 categories:. Relative Dating: simply determines whether or not an event occurs before or after another event (e.g. a granite dike is younger than the surrounding sandstone since it intrudes across the sandstone in an outcrop).. Fossils. and. Unconformities. The Geologic Cycle. 3 key events: deposition, uplift, erosion. Sedimentation of beds A-D beneath the sea. Uplift above sea level and exposure of D to erosion. Continual erosion strips D away completely and exposes C to erosion. Regents Earth Science. Miss Wojdan. The . presence of coal in Antarctica indicates . that. Forests can grow on continental . . glaciers. Coal can form in cold climates. Antarctica’s climate was once warmer. East-Central Idaho — . Metasedimentary. Strata, . Ore . Types, . Folds, Dikes, and Metamorphic Overprint. Art . Bookstrom. , Steve Box, Pam Cossette, . Tom Frost, and Shane . Kostka. . Regional Geologic Map showing the Mesoproterozoic Belt-Purcell basin and the Lemhi sub-basin . Favs. .. . Where do sediments come from?. - Weathering. – breaking down rock into smaller pieces chemically and physically.. - Erosion. - carrying away the particles and depositing them. . Glaciers. Section 12.1 Discovering earth’s history. Uniformitarianism – the idea that physical, chemical, and biological laws that operate today also operated in the past; the present is the key to the past.. Geologic Time and Evolution Earth Has a History Geologic materials record enormous changes. Earth is a complex, evolving system. Physical and biological systems continuously interact. Earth constantly changes and has done so through time. Fossils, Geologic Time, Absolute & Relative Dating, and Natural Resources Chapters 5 & 6 How Do Fossils Form? Fossils are found in sedimentary rocks like sandstone, limestone, and shale In Virginia, most fossils are ___When you started second grade. ___When you were born. ___ When you started kindergarten. ___When you learned to ride a bike.. ___ When you learned to walk.. ___ When you learned to read.. ___ When you lost your first tooth.. Fossil Groups Origins (FOGO) project: . X-. ray. . scaling. . relations. in . Fossil. . systems. R. . Barrena. (IAC, Spain). , A. Biviano (OAT, Italy), S. Borgani (UT, Italy), W. Boschin (TNG, Italy), N. Castro-Rodriguez (IAC, Spain), E. M. Corsini (UP, Italy), . Daniel Burk. What is a Predictive Model?. A GIS based model attempting to determine fossil locality potential. 1. Start with known fossil localities. 2. Compare their characteristics to other places. What is it and Why do we care? . What is the geologic time scale? . . Geologic Time Scale:. A record of the Earth’s . history broken up into . various units of time that. are based on types of . fossils contained within .