Open Access. Powered by Scholars. Published by Universities.®
- Discipline
-
- Hydrology (1820)
- Geomorphology (1672)
- Sedimentology (1483)
- Stratigraphy (1358)
- Environmental Sciences (1298)
-
- Paleontology (1213)
- Geophysics and Seismology (1145)
- Soil Science (1040)
- Oceanography and Atmospheric Sciences and Meteorology (923)
- Other Earth Sciences (910)
- Geochemistry (897)
- Engineering (718)
- Other Environmental Sciences (575)
- Life Sciences (554)
- Civil and Environmental Engineering (512)
- Tectonics and Structure (509)
- Other Engineering (462)
- Environmental Engineering (447)
- Social and Behavioral Sciences (429)
- Materials Science and Engineering (422)
- Other Materials Science and Engineering (409)
- Metallurgy (407)
- Ceramic Materials (400)
- Geography (307)
- Glaciology (214)
- Ecology and Evolutionary Biology (210)
- Environmental Monitoring (209)
- Institution
-
- Western Michigan University (18241)
- University of Nebraska - Lincoln (1705)
- Missouri University of Science and Technology (571)
- University of Kentucky (508)
- University of South Florida (461)
-
- Montana Tech Library (453)
- Utah State University (430)
- Portland State University (401)
- Western Washington University (400)
- Bulletin of the Mineral Research and Exploration (366)
- University of North Dakota (365)
- Western Kentucky University (359)
- University of New Mexico (256)
- University of Nevada, Las Vegas (225)
- Smith College (207)
- University of Tennessee, Knoxville (199)
- University of Arkansas, Fayetteville (193)
- Central Washington University (184)
- Brigham Young University (183)
- Selected Works (173)
- Western University (173)
- University of Texas at El Paso (157)
- Old Dominion University (152)
- Michigan Technological University (151)
- University at Albany, State University of New York (112)
- University of Massachusetts Amherst (111)
- Louisiana State University (102)
- West Virginia University (100)
- William & Mary (97)
- City University of New York (CUNY) (96)
- Keyword
-
- Geology (611)
- Nebraska (465)
- Montana (273)
- Groundwater (251)
- Geochemistry (208)
-
- Kentucky (174)
- Stratigraphy (158)
- Karst (155)
- Utah (122)
- Tectonics (121)
- Butte (120)
- Water (115)
- Geomorphology (110)
- Geophysics (107)
- Hydrogeology (102)
- Hydrology (97)
- Petrology (97)
- Copper (90)
- Limestone (90)
- Seismology (78)
- Sedimentology (77)
- Test (75)
- Mars (74)
- Shale (74)
- Logs (73)
- Earth sciences (72)
- Hole (72)
- Geochronology (69)
- Map (68)
- GIS (67)
- Publication Year
- Publication
-
- Legacy Scout Tickets from Pure Oil Company (11044)
- Thin Sections (5745)
- Legacy Color Lithology Strip Logs (1152)
- Conservation and Survey Division (818)
- Theses and Dissertations (660)
-
- Masters Theses (610)
- United States Geological Survey: Staff Publications (499)
- Bachelors Theses and Reports, 1928 - 1970 (417)
- Bulletin of the Mineral Research and Exploration (366)
- WWU Graduate School Collection (287)
- All Graduate Theses and Dissertations, Spring 1920 to Summer 2023 (276)
- Earth and Planetary Sciences ETDs (254)
- Map and Chart--KGS (232)
- Dissertations and Theses (215)
- Geosciences: Faculty Publications (203)
- International Journal of Speleology (195)
- Geosciences and Geological and Petroleum Engineering Faculty Research & Creative Works (189)
- Doctoral Dissertations (179)
- Geology Faculty Publications and Presentations (173)
- UNLV Theses, Dissertations, Professional Papers, and Capstones (163)
- USF Tampa Graduate Theses and Dissertations (162)
- Geology Faculty Publications (160)
- Electronic Thesis and Dissertation Repository (154)
- Open Access Theses & Dissertations (154)
- Electronic Theses and Dissertations (144)
- Mammoth Cave Research Symposia (132)
- Graduate Theses and Dissertations (129)
- Bulletin of the University of Nebraska State Museum (113)
- Geology Theses and Dissertations (111)
- Geosciences Faculty Publications (108)
Articles 1 - 30 of 29380
Full-Text Articles in Geology
Inferred Areal Extent Of The Oligocene (White River Group) Chadron Basal Sand, Conservation And Survey Division
Inferred Areal Extent Of The Oligocene (White River Group) Chadron Basal Sand, Conservation And Survey Division
Conservation and Survey Division
No abstract provided.
Pre-Tertiary Subcrop Rocks In The Nebraska Panhandle, Conservation Annd Survey Division
Pre-Tertiary Subcrop Rocks In The Nebraska Panhandle, Conservation Annd Survey Division
Conservation and Survey Division
No abstract provided.
Configuration Of The Base Of The Principal Aquifer, Conservation And Survey Division
Configuration Of The Base Of The Principal Aquifer, Conservation And Survey Division
Conservation and Survey Division
No abstract provided.
Mgrre_Thinsections_Mgrre_11_26, Mgrre
Mgrre_Thinsections_Mgrre_11_25, Mgrre
Mgrre_Thinsections_Mgrre_11_24, Mgrre
Mgrre_Thinsections_Mgrre_11_23, Mgrre
Mgrre_Thinsections_Mgrre_11_22, Mgrre
Mgrre_Thinsections_Mgrre_11_21, Mgrre
Mgrre_Thinsections_Mgrre_11_20, Mgrre
Mgrre_Thinsections_Mgrre_11_19, Mgrre
Mgrre_Thinsections_Mgrre_11_18, Mgrre
Mgrre_Thinsections_Mgrre_11_17, Mgrre
Mgrre_Thinsections_Mgrre_11_16, Mgrre
Mgrre_Thinsections_Mgrre_11_15, Mgrre
Mgrre_Thinsections_Mgrre_11_14, Mgrre
Mgrre_Thinsections_Mgrre_11_13, Mgrre
Mgrre_Thinsections_Mgrre_11_12, Mgrre
Mgrre_Thinsections_Mgrre_11_11, Mgrre
Mgrre_Thinsections_Mgrre_11_10, Mgrre
Mgrre_Thinsections_Mgrre_11_9, Mgrre
Mgrre_Thinsections_Mgrre_11_8, Mgrre
Mgrre_Thinsections_Mgrre_11_7, Mgrre
Mgrre_Thinsections_Mgrre_11_6, Mgrre
Mgrre_Thinsections_Mgrre_11_5, Mgrre
Mgrre_Thinsections_Mgrre_11_4, Mgrre
Mgrre_Thinsections_Mgrre_11_3, Mgrre
Mgrre_Thinsections_Mgrre_11_2, Mgrre
Mgrre_Thinsections_Mgrre_11_1, Mgrre
Dating The Ste. Genevieve Limestone In West-Central Indiana Using Sr-Isotope Stratigraphy, Claire Wolfe '24
Dating The Ste. Genevieve Limestone In West-Central Indiana Using Sr-Isotope Stratigraphy, Claire Wolfe '24
Senior Research Symposium
A section of Mississippian limestone is exposed in quarry walls at the DePauw Nature Park in Greencastle, Indiana, but its precise age is not known. This research project aimed to date the exposed wall using 87Sr/86Sr isotopic ratios to determine the absolute age. Ten samples of brachiopods and ooids were collected at various levels along the stratigraphic column. Isotope ratios were measured in these samples at ALS Scandinavia using a Neptune Plus MC-ICP-MS. Those ratios were then placed on a LOESS seawater Sr-isotope curve (McArthur, 2020) to determine the absolute age range for each sample. Whereas several samples were contaminated …