PPT-Unit 4 – Geologic History Review

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 Antarcticas climate was once warmer. Astronaut Video: . Sarychev. Volcano Eruption. Lithology. – rock type of surface rocks and bedrock. Structure. – folding, faulting and deformation of rocks . Landforms. . – terrain features formed by natural processes that appear similar wherever they are found (Way 1973); Can be erosional or depositional. 01: . Geologic Time . Scale. Huge sections of time are broken down into smaller groups of time:. E. ons, Eras, . P. eriods, and . E. pochs. Eon. is the largest time block. . (kind of like what we would think of as years).. Distributed . Geoscience Datasets and . the Role . of Semantic Technologies. Xiaogang (Marshall) Ma. Tetherless World Constellation. Rensselaer Polytechnic Institute. @. MarshallXMa. max7@rpi.edu. x.marshall.ma. 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.. Mapping, spectroscopy and geologic analysis of Earth’s “sister” planet. Venus. The Basics, pre-1960. Radius 95% of Earth, mass 82%. 92X Earth atmospheric pressure, 97% CO2. 462°C surface temp. Mesozoic. Cambrian and Ordovician. Cenozoic. Pre-Belt. Pre-Cambrian. Paleozoic. Page. 1. Geologic Timeline . For example, using fossils, geologists can compare certain geologic strata in Montana with the "type section" of Devonian age rocks in Devon, England and determine that their ages are the same. Radiometric dates tell us that Devonian rocks fall in a range of 369–410 million years ago.. INDEX . FOSSILS . (brief, but widespread). HOW . MUCH PLATES HAVE . MOVED ALL OVER. . . . show how Earth went from . Pangeae. to how it is today in only 230 million years. 71 million years ago, India was down in the southern hemisphere.. It has been suggested that, sometimes, drastic changes that can form a new species . take . place.. Under this idea, a new species may form after a group becomes separated from the original population.. Relative Dating. How old is the Earth?. The Earth is about 4.6 billion years old. Much of its history is recorded in the rocks. Observations of fossils, rock types, evidence of . faulting, uplift, and folding as well as igneous . “Civilization exists by geologic consent” -Will Durant. Where are the world’s great cities located and why?. Why are Earliest Humans Here?. East African Rift. Water. Animals. Preservation of fossils. 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 . The geologic time scale divides Earth’s long history into units of time…. Eras. .  . Periods. .  . Epochs. Eras. are divided into . P. eriods. .. Periods. are divided into . Epochs. .. Precambrian. Absolute vs. Relative . Age. Relative Age. Determining the age of an object in relation to other objects. “Estimate”. Index Fossils, Rock layers. Example. : A friend tells you . he . has 2 brothers – one that’s older than . Leading TV Unit Manufacturer in Pune Innovative Designs, Superior Quality at Adeetya's Kitchen & Furniture https://adeetyas.com/tv-unit-manufacturers-in-pune.php