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- https://geo.libretexts.org/Courses/SUNY_Potsdam/Sedimentary_Geology%3A_Rocks_Environments_and_Stratigraphy/07%3A_Chemical_Biochemical_and_Other_Sedimentary_Rocks/7.03%3A_Organic-Rich_Sedimentary_RocksOrganic-rich sedimentary rocks form when organic material is preserved and buried in oxygen-poor subaqueous or swampy environments. Oil and natural gas form when the remains of algae and other aquati...Organic-rich sedimentary rocks form when organic material is preserved and buried in oxygen-poor subaqueous or swampy environments. Oil and natural gas form when the remains of algae and other aquatic microorganisms are buried and heated to ~75-200 ⁰C. Economic accumulations of oil and natural gas require specific processes and conditions. Coal forms as terrestrial plant material is buried and volatiles (water and gasses) are driven out which increases the percentage of carbon in the rock.
- https://geo.libretexts.org/Courses/SUNY_Potsdam/Sedimentary_Geology%3A_Rocks_Environments_and_Stratigraphy/01%3A_IntroductionSedimentary rocks are extremely abundant, provide important archives of Earth's history, and are of profound economic and environmental significance.
- https://geo.libretexts.org/Courses/Lumen_Learning/Earth_Science_(Lumen)/11%3A_Ocean_Water_and_Life/11.04%3A_Ocean_OrganismsThis page discusses the ocean's vital resources, which require sustainable management due to threats like overfishing and harmful practices. It highlights the adaptation of organisms to harsh marine e...This page discusses the ocean's vital resources, which require sustainable management due to threats like overfishing and harmful practices. It highlights the adaptation of organisms to harsh marine environments and the importance of biodiversity in coral reefs, which are under stress from pollution and climate change. Additionally, it describes unique ecosystems at hydrothermal vents, where life thrives on chemosynthesis, supported by bacteria and housing various marine species.
- https://geo.libretexts.org/Sandboxes/ajones124_at_sierracollege.edu/Geology_of_California_(DRAFT)/04%3A_Geologic_Structures_and_Seismology/4.02%3A_FoldingThis page covers geological structures formed by the deformation of rocks due to tectonic forces, categorizing them into anticlines, synclines, and monoclines. Anticlines are upward convex folds with ...This page covers geological structures formed by the deformation of rocks due to tectonic forces, categorizing them into anticlines, synclines, and monoclines. Anticlines are upward convex folds with older core rocks, while synclines are downward convex with younger core rocks. Monoclines are step-like folds. The page also describes the economic significance of antiforms and domes in trapping oil and natural gas.
