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- https://geo.libretexts.org/Bookshelves/Geography_(Physical)/California_Geography_(Patrich)/08%3A_Klamath_and_The_Modoc_Plateau/8.01%3A_INTRODUCTIONThis unit explores the Klamath Mountain and Modoc Plateau provinces. The Klamath Mountains, spanning northwestern California and southwestern Oregon, are part of the Pacific Coast Ranges and feature d...This unit explores the Klamath Mountain and Modoc Plateau provinces. The Klamath Mountains, spanning northwestern California and southwestern Oregon, are part of the Pacific Coast Ranges and feature diverse geology and climate fostering rich biodiversity. The Modoc Plateau, located in northeastern California, is characterized by volcanic tablelands with faults, lakes, and streams. Both regions boast unique geological and biological significance, supporting a range of flora and fauna.
- https://geo.libretexts.org/Courses/Lumen_Learning/Earth_Science_(Lumen)/05%3A_Volcanoes/5.02%3A_Types_of_VolcanoesThis page outlines various types of volcanoes, including composite, shield, cinder cones, and supervolcanoes, emphasizing their distinct shapes, eruption styles, and magma compositions. It also mentio...This page outlines various types of volcanoes, including composite, shield, cinder cones, and supervolcanoes, emphasizing their distinct shapes, eruption styles, and magma compositions. It also mentions calderas and poses questions about volcanic structures, encouraging further exploration of their formation and variations.
- https://geo.libretexts.org/Sandboxes/ajones124_at_sierracollege.edu/Geology_of_California_(DRAFT)/00%3A_Front_Matter/05%3A_PrefaceThis page presents "Geology of California," an open educational resource textbook with a student-centered approach. It includes diverse engagement methods like text, images, videos, and activities acr...This page presents "Geology of California," an open educational resource textbook with a student-centered approach. It includes diverse engagement methods like text, images, videos, and activities across 19 chapters, covering key concepts, physiographic provinces, and environmental issues. Instructors can adapt it to their needs. Developed through educator collaboration, the book aims to enhance students' understanding and appreciation of geology.
- https://geo.libretexts.org/Sandboxes/ajones124_at_sierracollege.edu/Geology_of_California_(DRAFT)/07%3A_Cascade_Range_and_Modoc_Plateau/7.06%3A_Lassen_Volcanic_National_ParkPrior to the eruption of Mount Saint Helens in 1980, the 1915 Lassen Peak eruption was the most famous volcanic eruption in US History. Today, the park is known for a variety of volcanic features, no...Prior to the eruption of Mount Saint Helens in 1980, the 1915 Lassen Peak eruption was the most famous volcanic eruption in US History. Today, the park is known for a variety of volcanic features, not just for the evidence of the eruption. Four types of volcanoes can all be found in the park. The park also hosts hot springs and geysers that are the result of hydrothermal heating from the magma chamber at depth.
- https://geo.libretexts.org/Sandboxes/ajones124_at_sierracollege.edu/Geology_of_California_(DRAFT)/08%3A_Basin_and_Range/8.03%3A_Rift-Related_Faulting_in_Eastern_CaliforniaThe Basin and Range Province contains a large number of normal faults that formed in response to continental rifting. They have produced a series of uplifted ranges (the footwalls of normal faults) a...The Basin and Range Province contains a large number of normal faults that formed in response to continental rifting. They have produced a series of uplifted ranges (the footwalls of normal faults) and basins (the down-dropped hanging walls). This section discusses the formation of these features and the ongoing hazards that they present for those who live in the region.
- https://geo.libretexts.org/Sandboxes/ajones124_at_sierracollege.edu/Geology_of_California_(DRAFT)/18%3A_California's_Water/18.05%3A_Threats_to_Californias_WaterBoth surface water and groundwater naturally contain a variety of dissolved and solid materials. Dissolved substances can be carried in rainfall or derived from the chemical weathering of rocks within...Both surface water and groundwater naturally contain a variety of dissolved and solid materials. Dissolved substances can be carried in rainfall or derived from the chemical weathering of rocks within a drainage basin. This demonstrates that sediments, geochemistry, and overall geology significantly impact water quality throughout California.
- https://geo.libretexts.org/Sandboxes/ajones124_at_sierracollege.edu/Geology_of_California_(DRAFT)/00%3A_Front_Matter/10%3A_Recommended_CitationsThe page provides a citation example in the Geological Society of America style for a source titled "Geology of California," authored by Jones et al. It also mentions reference guidelines from the Geo...The page provides a citation example in the Geological Society of America style for a source titled "Geology of California," authored by Jones et al. It also mentions reference guidelines from the Geological Society of America, with a retrieval date of January 13, 2025. It serves as a guide for correctly formatting references in geological studies.
- https://geo.libretexts.org/Sandboxes/ajones124_at_sierracollege.edu/Geology_of_California_(DRAFT)/08%3A_Basin_and_RangeBecause of its lack of vegetation and the long span of geologic time that is represented in this region, scientists from all over the world have used this area to formulate and test their geologic hyp...Because of its lack of vegetation and the long span of geologic time that is represented in this region, scientists from all over the world have used this area to formulate and test their geologic hypotheses. This region is bounded by the Nevada border on the east, the Garlock fault on the south and the Sierra Nevada Mountains on the west.
- https://geo.libretexts.org/Sandboxes/ajones124_at_sierracollege.edu/Geology_of_California_(DRAFT)/18%3A_California's_Water/18.02%3A_Running_WaterIn California, precipitation plays a pivotal role in shaping the state's water resources and hydrological cycle. Precipitation refers to any form of water—such as rain, snow, sleet, or hail—that falls...In California, precipitation plays a pivotal role in shaping the state's water resources and hydrological cycle. Precipitation refers to any form of water—such as rain, snow, sleet, or hail—that falls from the atmosphere to the Earth's surface. In California, the amount, timing, and distribution of precipitation are crucial factors that influence water availability, ecosystem health, and human activities.
- https://geo.libretexts.org/Sandboxes/ajones124_at_sierracollege.edu/Geology_of_California_(DRAFT)/05%3A_Geologic_Time/5.03%3A_Dating_Rocks_Using_FossilsFossils are important indicators of periods of geologic time. When present in rocks, they provide an opportunity to correlate units that are not in direction connection with one another. This section ...Fossils are important indicators of periods of geologic time. When present in rocks, they provide an opportunity to correlate units that are not in direction connection with one another. This section presents a review of the significance of fossils in the determination of relative geologic time.
- https://geo.libretexts.org/Sandboxes/ajones124_at_sierracollege.edu/Geology_of_California_(DRAFT)/07%3A_Cascade_Range_and_Modoc_Plateau/7.04%3A_Volcanic_HazardsThere are a variety of volcanic Hazards in the California Cascades. Lava flows form when molten rock reaches the surface of the earth and flows across the ground or down the slopes of a volcano. Pyr...There are a variety of volcanic Hazards in the California Cascades. Lava flows form when molten rock reaches the surface of the earth and flows across the ground or down the slopes of a volcano. Pyroclastic flows are a mixture of gas, ash and other debris that flows along the ground surface. Lahars are water-based mudflows composed of volcanic material that can form with or without a volcanic eruption. Ash and tephra are ejected in the air and can rain down far from the volcano.
