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Geologic time scale

Geologic time scale
Online exhibits Geologic time scale Take a journey back through the history of the Earth — jump to a specific time period using the time scale below and examine ancient life, climates, and geography. You might wish to start in the Cenozoic Era (65.5 million years ago to the present) and work back through time, or start with Hadean time (4.6 to 4 billion years ago)* and journey forward to the present day — it's your choice. Ways to begin your exploration: Use the links in the "time machine" below and explore a specific period that interests you.Read more about the geologic time scale, its origins and its time divisions.Find out more about plate tectonics, an important geological concept in any time period! Related:  Timeline tools and resources.

Civil Rights Movement Timeline (14th Amendment, 1964 Act, Human Rights Law) Jan. 23 The 24th Amendment abolishes the poll tax, which originally had been instituted in 11 southern states after Reconstruction to make it difficult for poor blacks to vote. Summer The Council of Federated Organizations (COFO), a network of civil rights groups that includes CORE and SNCC, launches a massive effort to register black voters during what becomes known as the Freedom Summer. It also sends delegates to the Democratic National Convention to protest—and attempt to unseat—the official all-white Mississippi contingent. July 2 President Johnson signs the Civil Rights Act of 1964. Aug. 4 (Neshoba Country, Miss.)

Le site des dinosaures... Fossils and Geologic Time Photo Credit: Purpose To help students understand the development of the geologic time scale. Also, to introduce students to the major time periods in earth's history, as well as to the role fossils play in helping us understand this history. Context This lesson is based on an online booklet that provides an introduction to the study of earth's history, published by the USGS. Students will likely have been introduced to the geologic time scale in earlier grades, so this lesson is structured loosely to enable you to adapt the content to match the levels and needs of your particular students. Concepts covered in this lesson, including geologic history, age dating, plate tectonics, timelines, and fossils are prerequisite concepts for understanding the theory of evolution, which is another topic taught at this grade level. Planning Ahead This lesson is based on information included in Fossils, Rocks, and Time, part of the United States Geological Survey website. Motivation Development

List of timelines From Wikipedia, the free encyclopedia This is a list of timelines currently on Wikipedia. §Types[edit] §General timelines[edit] §History[edit] §Arts[edit] §Biographical timelines[edit] §Crime[edit] §Events[edit] §Disasters[edit] §Economics[edit] §Entertainment[edit] §Environmental issues[edit] §Fiction[edit] §Geographical timelines[edit] Timeline of country and capital changes §Ancient civilizations[edit] §Extant civilizations[edit] §Supranational entities and regions, peoples[edit] §Sovereign states[edit] §Subnational regions and cities, narrow timelines[edit] §Law[edit] §Military[edit] §Military conflicts[edit] §Philosophy[edit] §Politics[edit] §Religion[edit] §Ayyavazhi[edit] Timeline of Ayyavazhi history (1809–present) §Buddhism[edit] Timeline of Buddhism (563 BCE – present) §Christianity[edit] §Islam[edit] §Jainism[edit] Timeline of Jainism §Judaism[edit] §Sikhism[edit] Sikh Gurus (1469–1666) §Science[edit] §Astronautics and planetary science[edit] §Astronomy, Astrophysics, and Cosmology[edit] §Biology[edit] §Sports[edit]

Préhistoire Préhistoire Une page pour visualiser d'un seul coup d'oeil les grands événements de la Préhistoire, son histoire, son étude, et aussi celle de l'Homme et de ses ancêtres : les hommes préhistoriques. Préhistoire, une histoire récente... Un peu d'histoire de la Préhistoire... Cela fait maintenant presque deux siècles que l'homme étudie cette période chronologique qui s'étend sur plusieurs millions d'années : la Préhistoire. La vérité vient de la géologie Les études géologiques commencent alors à faire reculer l'âge de la Terre. Histoire de la Terre Les théories de l'évolution Préhistoire - les grandes avancées Le schéma ci-dessous vous présente les avancées majeures de la préhistoire, ou du moins celles dont on a pu trouver et identifier les traces ! Schéma Copyright Neekoo Les premiers outils - 2,5 Millions d'années puis les premiers bifaces vers - 1,3 millions d'années L'une des premières preuves de l'activité humaine qui soit parvenue jusqu'à nous est l'industrie lithique. Yves Coppens

Cenozoic Era Cenozoic Era (65 million years ago to present) The KT Event set the stage for the Cenozoic Era Cenozoic Era that began 65 million years ago. As the dinosaurs perished at the end of the Cretaceous, the mammals took center stage. Even as mammals increased in numbers and diversity, so too did the birds, reptiles, fish, insects, trees, grasses, and other forms of life. Species changed as the epochs of the Cenozoic Era rolled by, with the mammals eventually becoming the largest land animals of the Era, as the dinosaurs had been during the Mesozoic. Tertiary Period (65 to 2.6 million years ago); Also see: Tertiary Fossils Invertebrates, fish and reptiles were similar to those of modern types, but mammals, birds, protozoa and flowering plants would undergo considerable evolutionary change. Paleocene - The Paleocene Epoch began after the extinction of the dinosaurs. Eocene - The first grasses appeared in the Eocene Epoch (from about 54 to 37 million years ago) with growth near the root

Brief Timeline of American Literature and Events, 1620-1920 Brief Timeline of American Literature and Events: Pre-1620 to 1920 This timeline provides a short chronology of events in American history and literature. It is linked to course pages and bibliographies as well as to a set of more general linked resources: pages on American authors, literary movements, and American literature sites. Each author page contains a picture (if available), a bibliography (if available), links to major sites about the author, and links to works online.

A Guide to the Orders of Trilobites Geological Museum The Geological Museum – now the Red Zone – started life in 1841 as part of the Geological Survey. After three homes in 100 years it moved to South Kensington, into a building designed by Science Museum architect Sir Richard Allinson and JH Markham . You can see the words ‘Geological Survey Museum’ carved over the Museum entrance in Exhibition Road. The building, which shares similarities in appearance with the Science Museum, was built between 1929 and 1933 at a cost of £220,000, and opened its doors in July 1935. In 1985 it merged with the Natural History Museum, adding a collection of more than 30,000 minerals. In 1988 the Lasting Impressions gallery was opened to connect the two. The redevelopment of 1996 to 1998 created the Atrium and six new exhibitions.