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- https://geo.libretexts.org/Courses/Lumen_Learning/Earth_Science_(Lumen)/05%3A_Volcanoes/5.04%3A_Volcanic_EruptionsThis page summarizes the 1980 eruption of Mount St. Helens, which caused extensive damage and fatalities, highlighting the difference between explosive and non-explosive eruptions based on lava viscos...This page summarizes the 1980 eruption of Mount St. Helens, which caused extensive damage and fatalities, highlighting the difference between explosive and non-explosive eruptions based on lava viscosity. It explains how high-viscosity lava leads to explosive eruptions, while low-viscosity lava flows create distinct formations. Key factors for predicting volcanic activity include seismic events near volcanoes, gas emissions, and ground deformation.
- https://geo.libretexts.org/Sandboxes/ajones124_at_sierracollege.edu/Geology_of_California_(DRAFT)/06%3A_A_Brief_Geologic_History_of_California/6.05%3A_Cenozoic_California_(66_Ma__Present)-_Faulting_Uplift_and_Basin_FormationThis page discusses the geological transformations in California during the Cenozoic Era, including the transition from subduction to transform boundaries that formed the San Andreas Fault. It describ...This page discusses the geological transformations in California during the Cenozoic Era, including the transition from subduction to transform boundaries that formed the San Andreas Fault. It describes the impact of tectonic changes on the landscape, the active Cascadia Subduction Zone producing the Cascade Range, and glacial events of the Quaternary period, which shaped the region's topography and coastline.
- https://geo.libretexts.org/Bookshelves/Geography_(Physical)/California_Geography_(Patrich)/07%3A_Californias_Regions_and_Provinces/7.04%3A_THE_11_GEOMORPHIC_PROVINCESCalifornia's geomorphic provinces are distinct geologic regions, each with unique features defined by geology, faults, topographic relief, and climate. There are eleven provinces, including the Great ...California's geomorphic provinces are distinct geologic regions, each with unique features defined by geology, faults, topographic relief, and climate. There are eleven provinces, including the Great Valley, Modoc Plateau, Klamath Mountains, Sierra Nevada, Transverse Ranges, Cascade Range, Coast Ranges, Peninsular Ranges, Basin & Range, Mojave Desert, and Colorado Desert. These provinces offer diverse landscapes.
- https://geo.libretexts.org/Courses/Lumen_Learning/Earth_Science_(Lumen)/04%3A_Earths_Interior_Processes/4.03%3A_VolcanoesThis page discusses volcanoes, primarily located at convergent and divergent plate boundaries, particularly around the Pacific Ocean's Ring of Fire. Eruptions result from melting mantle rock and vary ...This page discusses volcanoes, primarily located at convergent and divergent plate boundaries, particularly around the Pacific Ocean's Ring of Fire. Eruptions result from melting mantle rock and vary based on magma composition, impacting the environment. They can be effusive or explosive, with supervolcanoes like Yellowstone posing significant threats.
- https://geo.libretexts.org/Courses/Lumen_Learning/Earth_Science_(Lumen)/05%3A_Volcanoes/5.01%3A_Volcanic_ActivityThis page discusses volcanoes as formations resulting from magma escape, predominantly found along tectonic plate boundaries. It emphasizes their prevalence in convergent zones like the Pacific Ring o...This page discusses volcanoes as formations resulting from magma escape, predominantly found along tectonic plate boundaries. It emphasizes their prevalence in convergent zones like the Pacific Ring of Fire, as well as divergent boundaries and hot spots like the Hawaiian Islands. The content covers fundamental concepts regarding volcanic formation, distribution, and the comparison of various volcanic types.
- https://geo.libretexts.org/Courses/Lumen_Learning/Earth_Science_(Lumen)/05%3A_Volcanoes/5.03%3A_Volcanic_Landforms_and_Geothermal_ActivityThis page explains the formation of igneous rocks from molten magma, highlighting the distinction between intrusive and extrusive varieties. It discusses volcanoes as major landforms shaped by extrusi...This page explains the formation of igneous rocks from molten magma, highlighting the distinction between intrusive and extrusive varieties. It discusses volcanoes as major landforms shaped by extrusive lava, and notes that magma can create intrusions when solidified underground. The page also covers geothermal features like hot springs and geysers, providing examples such as the Columbia Plateau and Old Faithful.
- https://geo.libretexts.org/Bookshelves/Geography_(Physical)/California_Geography_(Patrich)/08%3A_Klamath_and_The_Modoc_Plateau/8.02%3A_KLAMATH_MOUNTAINSThe Klamath Mountains, originally low and smooth, rose over time, resulting in deep canyons like the Klamath River canyon. The landscape shaped by uplift and erosion now features rugged mountains and ...The Klamath Mountains, originally low and smooth, rose over time, resulting in deep canyons like the Klamath River canyon. The landscape shaped by uplift and erosion now features rugged mountains and valleys, with distinct ranges like the Salmon and Siskiyou Mountains. The region???s geology is a result of ancient island arcs and continental fragments, rich with gold-bearing gravels, leading to historical mining. Mount Shasta, a prominent volcano here, has a complex formation history.
- https://geo.libretexts.org/Courses/Lumen_Learning/Earth_Science_(Lumen)/05%3A_VolcanoesThis page outlines key topics in volcanology, covering types of volcanoes, volcanic landforms, geothermal activity, and eruptions, providing a comprehensive guide to understanding volcanic activity an...This page outlines key topics in volcanology, covering types of volcanoes, volcanic landforms, geothermal activity, and eruptions, providing a comprehensive guide to understanding volcanic activity and related geological features.
