The Quaternary prehistory PortalIntroductionThe Quaternary (/kwəˈtɜːrnəri, ˈkwɒtərnɛri/ kwə-TUR-nə-ree, KWOT-ər-nerr-ee) is the current and most recent of the three periods of the Cenozoic Era in the geologic time scale of the International Commission on Stratigraphy (ICS). It follows the Neogene Period and spans from 2.58 million years ago to the present. As of 2023, the Quaternary Period is divided into two epochs: the Pleistocene (2.58 million years ago to 11.7 thousand years ago) and the Holocene (11.7 thousand years ago to today); a third epoch, the Anthropocene, has recently been proposed, but it is not officially recognised by the ICS. The Quaternary Period is typically defined by the cyclic growth and decay of continental ice sheets related to the Milankovitch cycles and the associated climate and environmental changes that they caused. (Full article...) Selected article on the Quaternary prehistory world and its legaciesEruptions along the narrow fissure system under the chain began in the west moat of Long Valley Caldera 400,000 to 60,000 years ago. Mammoth Mountain was formed during this period. Multiple eruptions from 40,000 to 600 years ago created the Mono Craters and eruptions 5,000 to 500 years ago formed the Inyo Craters. Lava flows 5,000 years ago built the Red Cones, and explosion pits on Mammoth Mountain were excavated in the last 1,000 years. (see more...) Selected article on the Quaternary prehistory in human science, culture and economicsBone Sharps follows the two scientists Edward Drinker Cope and Othniel Marsh as they engage in an intense rivalry for prestige. Ottaviani has Cope and Marsh interact and meet many important figures of the Gilded Age, from P. T. Barnum to U.S. Grant, as the two scientists pursue their hotheaded and sometimes illegal acquisitions of fossils. Unlike in his previous books, "the scientists are the bad guys this time". Upon release, the novel received praise from critics for its exceptional historical content, although some reviewers wished more fiction had been woven into the story. (see more...) Selected image
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Need help?Do you have a question about Abyssal/Portal:Quaternary that you can't find the answer to? Consider asking it at the Wikipedia reference desk. TopicsGeochronology - Quaternary (Pleistocene - Holocene) Quaternary landmasses - Major Quaternary events - Quaternary biota appearances - Fossil sites - Stratigraphic units - History - History of paleontology - Timeline of paleontology Researchers - Culture - Treatise on Invertebrate Paleontology - Vertebrate Paleontology Quality ContentFeatured Quaternary prehistory articles - Good Quaternary prehistory articles - SubcategoriesThings you can doRelated contentAssociated WikimediaThe following Wikimedia Foundation sister projects provide more on this subject:
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