Found 83 datasets matching "Ordovician".
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This data set represents the extent of the Cambrian-Ordovician aquifer system in the states of Wisconsin, Michigan, Minnesota, Iowa, and Illinois.
Search relevance: 139.91 | Views last month: 4 -
This data set represents the extent of the Ordovician aquifers in Tennessee and Kentucky.
Search relevance: 118.78 | Views last month: 0 -
This geodatabase includes spatial datasets that represent the Cambrian-Ordovician aquifer system in the States of Wisconsin, Michigan, Minnesota, Iowa, and Illinois. Included are: (1) a...
Search relevance: 109.63 | Views last month: 1 -
This dataset captures in digital form previously published maps showing the inferred extent and subsurface elevation of several Paleozoic consolidated rock units in the northern Midwest of the...
Search relevance: 104.39 | Views last month: 1 -
High radium (Ra) concentrations in potable portions of the Cambrian-Ordovician (C-O) aquifer system were investigated using water-quality data and environmental tracers ( 3H, 3Hetrit, SF6 , 14C...
Search relevance: 80.41 | Views last month: 0 -
High radium (Ra) concentrations in potable portions of the Cambrian-Ordovician (C-O) aquifer system were investigated using water-quality data and environmental tracers ( 3H, 3Hetrit, SF6 , 14C...
Search relevance: 79.00 | Views last month: 0 -
High radium (Ra) concentrations in potable portions of the Cambrian-Ordovician (C-O) aquifer system were investigated using water-quality data and environmental tracers ( 3H, 3Hetrit, SF6 , 14C...
Search relevance: 70.23 | Views last month: 0 -
The U.S. Geological Survey (USGS) collected gravity data in the Wet Mountains, CO from September 2021 to July 2022 to compliment newly collected airborne magnetic data for surface and subsurface...
Search relevance: 67.17 | Views last month: 2 -
High radium (Ra) concentrations in potable portions of the Cambrian-Ordovician (C-O) aquifer system were investigated using water-quality data and environmental tracers ( 3H, 3Hetrit, SF6 , 14C...
Search relevance: 66.42 | Views last month: 0 -
This data release includes whole rock (WR) geochemical data for 94 samples. Whole rock geochemistry data were analyzed at Actlabs in Ancaster, Ontario, Canada. Rock samples were collected by...
Search relevance: 61.31 | Views last month: 0 -
This digital geospatial compilation gathered paleoflow indicators from current-formed sedimentary structures throughout the Paleozoic Ozark uplift, Arkoma foreland basin, and Ouachita...
Search relevance: 56.19 | Views last month: 0 -
Information of hydrogeologic and geologic importance from the book, "Lithofacies Maps: An Atlas of the United States and Southern Canada" (Sloss and others, 1960) detailing geologic periods,...
Search relevance: 50.46 | Views last month: 0 -
Fractionation of petroleum during migration through sedimentary rock matrices has been observed across lengths of meters to kilometers. Selective adsorption of specific chemical moieties at...
Search relevance: 48.36 | Views last month: 0 -
This model is a preliminary characterization of trichloroethene transport in the surficial and Cambrian-Ordovician aquifer systems at the Naval Industrial Reserve Ordnance Plant in Fridley,...
Search relevance: 45.89 | Views last month: 0 -
Citation Note: These data were collected as part of a research study published in Environmental Science and Technology. Please reference the following paper when citing these data. Blondes,...
Search relevance: 41.48 | Views last month: 0 -
These studies undertook detailed analyses of the formations within the Cambro-Ordovician strata above the Mt. Simon Sandstone in the Illinois Basin, including the St. Peter Sandstone, for...
Search relevance: 40.48 | Views last month: 0 -
The geology of an area of 660 square miles mostly in the northeastern corner of Tennessee and small adjacent areas in Virginia and North Carolina is the subject of this report. The region lies...
Search relevance: 40.43 | Views last month: 1 -
To refine the use of graptolite and solid bitumen properties as thermal proxies at overmature conditions, we evaluated their evolution via Raman and infrared spectroscopies, reflectance, and...
Search relevance: 39.90 | Views last month: 0 -
Fluorescence spectroscopy via confocal laser scanning microscopy (CLSM) was used to analyze ancient sedimentary organic matter, including Tasmanites microfossils in Devonian shale and...
Search relevance: 39.52 | Views last month: 0 -
Monroe County, in southeastern West Virginia, hosts world-class karst within carbonate units of Mississippian and Ordovician age. There are at least 412 known caves in the county. Location data...
Search relevance: 37.32 | Views last month: 0
