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- The Sierra Nevada mountain range in California has a long geological history. About 65 million years ago, it was a range of rolling low mountains. Around 20 million years ago, extensive volcanism occurred due to crustal extension. Approximately 4 million years ago, the Sierra Nevada began to form and tilt to the west1. Geologists believe it formed roughly 40 million years ago during the Eocene period, a time when carbon dioxide levels were higher than today2.Learn more:✕This summary was generated using AI based on multiple online sources. To view the original source information, use the "Learn more" links.By 65 million years ago, the proto-Sierra Nevada was worn down to a range of rolling low mountains, a few thousand feet high. Twenty million years ago, crustal extension associated with the Basin and Range Province caused extensive volcanism in the Sierra. About 4 million years ago, the Sierra Nevada started to form and tilt to the west.www.newworldencyclopedia.org/entry/Sierra_Neva…According to Mix’s study, the Sierra Nevada formed roughly 40 million years ago, a time geologists refer to as the Eocene. The Eocene was the most recent time in Earth’s history when carbon dioxide levels were higher than they are today, and many scientists view this as the worst-case scenario analog for today’s anthropogenic climate change.news.stanford.edu/stories/2015/12/mountains-eve…
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Sierra Nevada - Wikipedia
Native Americans Archaeological excavations placed Martis people of Paleo-Indians in northcentral Sierra Nevada during the period of 3,000 BCE to 500 CE. The earliest identified sustaining indigenous people in the Sierra Nevada were the Northern Paiute tribes on the east side, with the Mono tribe and Sierra Miwok … See more
The Sierra Nevada is a mountain range in the Western United States, between the Central Valley of California and the Great Basin. The vast majority of the range lies in the state of California, although the Carson Range spur … See more
The Sierra Nevada lies primarily in Central and Eastern California, with the Carson Range, a small but historically important spur, extending into … See more
The earliest rocks in the Sierra Nevada are metamorphic roof pendants of Paleozoic age, the oldest being metasedimentary rocks from the Cambrian in the See more
The Sierra Nevada is divided into a number of biotic zones, each of which is defined by its climate and supports a number of interdependent species. Life in the higher elevation … See more
Used in 1542 by Juan Rodríguez Cabrillo to describe a Pacific Coast Range (Santa Cruz Mountains), the term "Sierra Nevada" was a … See more
The climate of the Sierra Nevada is influenced by the Mediterranean climate of California. During the fall, winter and spring, precipitation in the Sierra ranges from 20 to 80 in (510 to 2,030 mm) where it occurs mostly as snow above 6,000 ft (1,800 m). … See more
Wikipedia text under CC-BY-SA license Sierra Nevada | U.S. Mountain Range, Physical Features
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Introduction: Origin and Evolution of the Sierra Nevada and …
Sierra Nevada Mountains - U-S-History.com
Sierra Nevada (U.S.) - New World Encyclopedia
History of the Sierra Nevada : Farquhar, Francis P.
Jan 4, 2022 · I. The Sierra Nevada -- II. Indians of the Sierra Nevada -- III. Spanish discovery and exploration -- IV. Jedediah Smith and the first crossing of the Sierra -- V. Joseph Walker and Zenas Leonard -- VI. The first immigrants …
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Geology | Yosemite Field Station
Jul 17, 2023 · Some of the oldest rocks in the Sierra Nevada are over 450 million years old and are made up of ancient ocean bottom sediments and sub-marine volcanic rocks. The origins …
Museum of the Sierra – Central Sierra …
Founded in 1991 by the Central Sierra Historical Society, The Museum of the Sierra preserves the cultural and natural history of the Sierra Nevada through education and curation of historical …
Sierra Nevada - Geography, People, Economy
4 days ago · The first paved highways crossed the Sierra Nevada in the 1920s. The central portion of the range, however, still lacks a year-round road or rail crossing. Rapid economic development has brought environmental compromise.
Sierra Nevada (US) - Simple English Wikipedia, the free …
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