Open Access. Powered by Scholars. Published by Universities.®
- Discipline
-
- Hydrology (1905)
- Geomorphology (1754)
- Sedimentology (1560)
- Stratigraphy (1428)
- Environmental Sciences (1349)
-
- Paleontology (1258)
- Geophysics and Seismology (1162)
- Soil Science (1118)
- Other Earth Sciences (918)
- Oceanography and Atmospheric Sciences and Meteorology (862)
- Geochemistry (850)
- Engineering (808)
- Other Environmental Sciences (575)
- Life Sciences (554)
- Civil and Environmental Engineering (530)
- Other Engineering (469)
- Tectonics and Structure (463)
- Environmental Engineering (456)
- Materials Science and Engineering (434)
- Social and Behavioral Sciences (420)
- Metallurgy (413)
- Other Materials Science and Engineering (412)
- Ceramic Materials (405)
- Geography (290)
- Environmental Monitoring (211)
- Plant Sciences (205)
- Ecology and Evolutionary Biology (204)
- Institution
-
- Western Michigan University (19354)
- University of Nebraska - Lincoln (1807)
- Missouri University of Science and Technology (672)
- University of Kentucky (577)
- Utah State University (507)
-
- University of South Florida (491)
- Montana Tech Library (460)
- Portland State University (447)
- University of North Dakota (407)
- Western Kentucky University (365)
- University of New Mexico (325)
- University of Nevada, Las Vegas (264)
- University of Arkansas, Fayetteville (250)
- Smith College (219)
- Central Washington University (216)
- Brigham Young University (183)
- University of Texas at El Paso (181)
- Old Dominion University (170)
- Michigan Technological University (157)
- Louisiana State University (129)
- University of Dar es Salaam (127)
- University of Alabama at Birmingham (124)
- University at Albany, State University of New York (112)
- Stephen F. Austin State University (109)
- West Virginia University (107)
- Illinois State University (104)
- City University of New York (CUNY) (103)
- Fort Hays State University (84)
- University of South Carolina (75)
- Wayne State University (73)
- Keyword
-
- Geology (729)
- Nebraska (496)
- Montana (275)
- Groundwater (267)
- Geochemistry (198)
-
- Kentucky (196)
- Karst (166)
- Stratigraphy (148)
- Rock (127)
- Tectonics (123)
- Butte (120)
- Utah (120)
- 3d model (116)
- Water (116)
- Geomorphology (115)
- Geophysics (112)
- Hydrogeology (105)
- Physical Sciences (99)
- Limestone (91)
- Hydrology (90)
- Copper (87)
- Petrology (82)
- Seismology (78)
- Shale (76)
- Test (75)
- Logs (73)
- Earth sciences (72)
- Hole (72)
- Map (71)
- Sedimentology (69)
- Publication Year
- Publication
-
- Legacy Scout Tickets from Pure Oil Company (11044)
- Thin Sections (6677)
- Legacy Color Lithology Strip Logs (1152)
- Conservation and Survey Division: Faculty and Staff Publications (897)
- Theses and Dissertations (626)
-
- United States Geological Survey: Staff Publications (507)
- Masters Theses (473)
- Bachelors Theses and Reports, 1928 - 1970 (423)
- Earth and Planetary Sciences ETDs (318)
- All Graduate Theses and Dissertations, Spring 1920 to Summer 2023 (276)
- Geosciences and Geological and Petroleum Engineering Faculty Research & Creative Works (265)
- Map and Chart--KGS (234)
- Dissertations and Theses (233)
- Geosciences: Faculty Publications (215)
- International Journal of Speleology (212)
- Geology Faculty Publications and Presentations (193)
- USF Tampa Graduate Theses and Dissertations (181)
- UNLV Theses, Dissertations, Professional Papers, and Capstones (178)
- Geolographs (174)
- Open Access Theses & Dissertations (167)
- Graduate Theses and Dissertations (145)
- Geosciences Faculty Publications (138)
- Mammoth Cave Research Symposia (133)
- Electronic Theses and Dissertations (130)
- Tanzania Journal of Science (127)
- All 3D Rock Models (116)
- Bulletin of the University of Nebraska State Museum (1924–2023) (112)
- Geology Theses and Dissertations (111)
- Robert F. Diffendal, Jr., Publications (103)
- OES Theses and Dissertations (101)
- Publication Type
- File Type
Articles 6751 - 6780 of 29939
Full-Text Articles in Geology
Mgrre_Thinsections_Mgrre-122_14, Mgrre
Mgrre_Thinsections_Mgrre-123_1, Mgrre
Mgrre_Thinsections_Moc-15_2, Mgrre
Mgrre_Thinsections_Moc-15_10, Mgrre
Mgrre_Thinsections_Moc-15_14, Mgrre
Mgrre_Thinsections_Moc-15_18, Mgrre
Mgrre_Thinsections_Moc-15_24, Mgrre
Mgrre_Thinsections_Moc-15_25, Mgrre
Mgrre_Thinsections_Moc-15_29, Mgrre
Mgrre_Thinsections_Mgrre-83_10, Mgrre
Mgrre_Thinsections_Moc-15_12, Mgrre
Mgrre_Thinsections_Mgrre-86_9, Mgrre
Mgrre_Thinsections_Mgrre-122_1, Mgrre
Mgrre_Thinsections_Mgrre-122_10, Mgrre
Mgrre_Thinsections_Moc-15_20, Mgrre
Mgrre_Thinsections_Mgrre-83_6, Mgrre
Mgrre_Thinsections_Mgrre-84_11, Mgrre
Mgrre_Thinsections_Mgrre-85_20, Mgrre
Mgrre_Thinsections_Mgrre-122_13, Mgrre
Mgrre_Thinsections_Mgrre-124_3, Mgrre
Mgrre_Thinsections_Mgrre-124_18, Mgrre
Mgrre_Thinsections_Moc-15_13, Mgrre
Fluids And Melts At The Magmatic-Hydrothermal Transition, Recorded By Unidirectional Solidification Textures At Saginaw Hill, Arizona, Usa, Wyatt M. Bain, Pilar Lecumberri-Sanchez, Erin E. Marsh, Matthew Steele-Macinnis
Fluids And Melts At The Magmatic-Hydrothermal Transition, Recorded By Unidirectional Solidification Textures At Saginaw Hill, Arizona, Usa, Wyatt M. Bain, Pilar Lecumberri-Sanchez, Erin E. Marsh, Matthew Steele-Macinnis
United States Geological Survey: Staff Publications
Fluid exsolution and melt evolution at the magmatic-hydrothermal transition are critical processes driving the metal enrichment of porphyry systems. Coeval fluid and melt inclusion assemblages in unidirectional solidification textures (USTs) at Saginaw Hill—a small, porphyry Cu system in southwestern Arizona—record a dynamic and repetitious process of fluid accumulation and release. The cores of quartz crystals throughout the UST bands host coeval silicate melt and brine inclusions but lack vapor-rich inclusions. This could indicate preferential expulsion of vapor and trapping of high-density brine during episodes of fracturing or the direct exsolution of single-phase high-salinity brine from the silicate melt. In contrast, …
The Castle Rock And Ironside Mountain Calderas, Eastern Oregon, Usa: Adjacent Venting Sites Of Two Dinner Creek Tuff Units—The Most Widespread Tuffs Associated With Columbia River Flood Basalt Volcanism, Matthew Cruz, Martin J. Streck
The Castle Rock And Ironside Mountain Calderas, Eastern Oregon, Usa: Adjacent Venting Sites Of Two Dinner Creek Tuff Units—The Most Widespread Tuffs Associated With Columbia River Flood Basalt Volcanism, Matthew Cruz, Martin J. Streck
Geology Faculty Publications and Presentations
The Dinner Creek Tuff is an important unit of mid-Miocene rhyolite volcanism contemporaneous to flood basalts of the Columbia River magmatic province. Field mapping along with analytical data of tuff samples identify two calderas, the Castle Rock and Ironside Mountain calderas, as the venting sites of two widespread ignimbrites of the Dinner Creek Tuff. Both calderas lie within the area of the proposed general storage sites of main-phase Columbia River Basalt magmas. The Castle Rock caldera formed during the eruption of the 16.16 Ma Dinner Creek Tuff unit 1. The northwestern boundary of the caldera is roughly defined by the …
Automatic Segmentation Of Sinkholes Using A Convolutional Neural Network, Muhammad Usman Rafique, Junfeng Zhu, Nathan Jacobs
Automatic Segmentation Of Sinkholes Using A Convolutional Neural Network, Muhammad Usman Rafique, Junfeng Zhu, Nathan Jacobs
Faculty, Staff, and Affiliated Publications--KGS
Sinkholes are the most abundant surface features in karst areas worldwide. Understanding sinkhole occurrences and characteristics is critical for studying karst aquifers and mitigating sinkhole-related hazards. Most sinkholes appear on the land surface as depressions or cover collapses and are commonly mapped from elevation data, such as digital elevation models (DEMs). Existing methods for identifying sinkholes from DEMs often require two steps: locating surface depressions and separating sinkholes from non-sinkhole depressions. In this study, we explored deep learning to directly identify sinkholes from DEM data and aerial imagery. A key contribution of our study is an evaluation of various ways …
The Shepherd Mountain Iron Ore Deposit In Southeast Missouri, Usa -- An Extension Of The Pilot Knob Magmatic-Hydrothermal Ore System: Evidence From Iron Oxide Chemistry, Bolorchimeg N. Tunnell, Marek Locmelis, Cheryl Seeger, Marilena Moroni, Sarah Dare, Ryan Mathur, Brandon Sullivan
The Shepherd Mountain Iron Ore Deposit In Southeast Missouri, Usa -- An Extension Of The Pilot Knob Magmatic-Hydrothermal Ore System: Evidence From Iron Oxide Chemistry, Bolorchimeg N. Tunnell, Marek Locmelis, Cheryl Seeger, Marilena Moroni, Sarah Dare, Ryan Mathur, Brandon Sullivan
Geosciences and Geological and Petroleum Engineering Faculty Research & Creative Works
The Southeast Missouri Iron Metallogenic Province in the Midcontinent USA contains seven major and several minor IOA/IOCG-type deposits and a series of shallow vein-type deposits/prospects, all of which are spatially and temporally associated with early Mesoproterozoic (1500–1440 Ma) magmatism in the St. Francois Mountains terrane. One of the vein-type deposits is the Shepherd Mountain deposit, which consists of two northeast-trending ore veins dominated by magnetite and lesser amounts of hematite. Here we report the findings of a study that investigates the origin of the Shepherd Mountain deposit and a possible genetic link to the nearby (i.e., < 5 km away) magmatic to magmatic-hydrothermal Pilot Knob ore system that comprises the massive-to-disseminated Pilot Knob Magnetite deposit and the overlying bedded and brecciated Pilot Knob Hematite deposit. Petrographic observations, whole-rock data and the trace element and Fe isotope composition of magnetite and hematite show that the Shepherd Mountain deposit formed from at least five pulses of magmatic-hydrothermal fluids with different compositions and physicochemical parameters. Integration of the data for the Shepherd Mountain deposit with new and published data from the Pilot Knob Magnetite and Pilot Knob Hematite deposits shows that the three deposits are genetically linked through two local faults. The Ironton and Pilot Knob faults provided fluid pathways that connected the Pilot Knob Magnetite deposit to the shallower Shepherd Mountain and Pilot Knob Hematite deposits. Consequently, we argue that the Shepherd Mountain and Pilot Knob Hematite deposits are near-surface extensions of the same magmatic to hydrothermal plumbing system that formed the Pilot Knob Magnetite deposit at depth.
The Role Of Slow Slip Events In The Cascadia Subduction Zone Earthquake Cycle, Juliette P. Saux, Elias G. Molitors Bergman, Eileen L. Evans, John P. Loveless
The Role Of Slow Slip Events In The Cascadia Subduction Zone Earthquake Cycle, Juliette P. Saux, Elias G. Molitors Bergman, Eileen L. Evans, John P. Loveless
Geosciences: Faculty Publications
Slow slip events (SSEs) detected on the Cascadia Subduction Zone interface at 30–50 km depth imply a release of accumulated strain. However, studies of interseismic deformation in Cascadia typically find coupling on the upper 30 km of the interface, which is generally accepted as defining the seismogenic zone. Estimates of coupling using net interseismic velocities (including SSE effects) and restricting coupling to the shallow interface may underestimate slip deficit accumulation at depths >30 km. Here, we detect reversals in GPS motion as indications of SSEs, then use SSE displacements to estimate cumulative slow slip from 2007 to 2021. We calculate …
Geologic Homogenization, Conditioning, & Reuse, University Of North Dakota. Energy And Environmental Research Center
Geologic Homogenization, Conditioning, & Reuse, University Of North Dakota. Energy And Environmental Research Center
EERC Brochures and Fact Sheets
Fact sheet about the Energy & Environmental Research Center project to evaluate the geologic homogenization, conditioning, and reuse (GHCR) concept of water management. Describes the GHCR concept and summarizes results of the multiyear project.