Database for the Surficial Geologic Map of the Charleston Region, Berkeley, Charleston, Colleton, Dorchester, and Georgetown Counties, South Carolina

This database portrays the surface and shallow subsurface geology of the greater Charleston, S.C. region east of 80°30′ west and south of 33°15′ north. The region covers the entirety of Charleston County and portions of Berkeley, Colleton, Dorchester, and Georgetown Counties. Units locally exposed at the surface range in age from middle Eocene to Holocene, but most of the area is covered by Quaternary interglacial deposits. These are, from oldest to youngest, the Okefenokee, Waccamaw(?), Penholoway, Ladson, Ten Mile Hill, and Wando Formations and the Silver Bluff beds. Two cross sections (not included in the database), one running southeast from Harleyville to the coastline on James Island and the other running...

Tags: Adam Run fault, Ashepoo River, Ashley Formation, Ashley River, Ashley River fault, All tags... Atlantic Ocean, Awendaw, Back River, Berkeley County, Bethera, Bull Harbor, Captain Sams Inlet, Cenozoic, Chandler Bridge Formation, Charleston, Charleston County, Charleston Harbor, Charleston fault, Clark Sound, College Park, Colleton County, Cooper River, Coosaw River, Copahee Sound, Cordesville, Cottageville, Daniel Island beds (informal), Dawho River, Dorchester, Dorchester County, East Branch Cooper River, Economic Geology, Edisto Beach, Edisto Formation, Edisto Island, Edisto River, Eocene, Esterville Minim Creek Canal, Folly Beach, Folly River, Fort Moultrie, Fort Sumter, Fort Wagner, Four Hole Swamp, Francis Marion National Forest, Geomorphology, Givhans, Goose Creek Limestone, Goose Creek Reservoir, Hamlin Sound, Harleyville, Harleyville Formation, Hollywood, Holocene, Huger, Huttos Lake, Intracoastal Waterway, Island of Palms, Jacksonboro, Jedburg, Johns Island, Kiawah River, Ladson, Ladson Formation, Lake Francis, Lake Merkel, Lake Moultrie, Lincolnville, Marine Geology, Marks Head Formation, Meggett, Miocene, Moncks Corner, Neogene, North Charleston, North Edisto River, North Santee, North Santee River, Okefenokee Formation, Oligocene, Open-File Report, Paleogene, Parachucla Formation, Parkers Ferry Formation, Penholoway Formation, Phanerozoic, Pinopolis, Pleistocene, Pliocene, Quaternary, Ravenel, Raysor Formation, Ridgeville, Saint Helena Sound, Santee Limestone, Seabrook Island, Sedimentology, Shulerville, Silver Bluff beds, South Edisto River, South Santee River, Stono Inlet, Stono River, Stratigraphy, Summerville, Summerville fault, Tail Race Canal, Ten Mile Hill Formation, Tertiary, Tibwin, Toogoodoo Creek, Tupelo Bay Formation Cross Member, Tupelo Bay Formation Pregnall Member, USGS Science Data Catalog (SDC), Waccamaw(?) Formation, Wadmalaw, Wadmalaw River, Wando, Wando Formation, West Branch Cooper River, Whiteville, Woodstock fault, alluvial terrace, alluvium, beach sand, bedrock geologic units, biostratigraphy, carbonate rock, cartography, clay deposits, clay or mud, climatologyMeteorologyAtmosphere, colluvium, earth sciences, earthquakes, economic geology, environment, fault zones, faults, flood plain, geography, geologic contacts, geologic history, geologic maps, geologic processes, geology, geomorphology, geoscientificInformation, geospatial datasets, gravel, gravel deposits, human impacts, lake or marine sediment, limestone, lithostratigraphy, maps and atlases, marine geology, mud flat, natural rock formations, nonmetallic mineral resources, peat, rocks and deposits, sand, sand deposits, sedimentary rocks, sedimentation, sedimentology, silt, stratigraphy, structural geology, structure contours, study areas, surficial geologic units, terrace, time periods, unconformities, unconsolidated deposits, unconsolidated material, Fewer tags

True vertical thickness shapefile points for the 3D petroleum systems model of the Williston Basin, USA

This describes 28 thickness point shapefiles that represent true vertical thickness (TVT) values by calculating the difference between stratigraphically adjacent formation tops picked on borehole geophysical logs. In wells where adjacent formation tops are missing, no TVT value is calculated. The TVT values are a measure of vertical thickness and do not account for the structural dip of units encountered in the wellbore. In total, the dataset contains 115,789 TVT values calculated in 16,200 wells from the Williston Basin of North Dakota, South Dakota, and Montana. This is a child item of a larger data release titled "Data release for the 3D petroleum systems model of the Williston Basin, USA".

Tags: Montana, North Dakota, Phanerozoic, Province 31, South Dakota, All tags... borehole logging, drilling and coring, formation tops, geology, geoscientificInformation, maps and atlases, stratigraphic thickness, stratigraphy, structural geology, tectonic processes, Fewer tags

Collection of Topography Rasters for Various Bedrock Surfaces in Minnesota, MGS Database, D-04

Raster grids depicting the current knowledge for elevation for the bedrock surface, pre-Mesozoic surface, the Precambrian surface and the basement surface based on the addition of new data from completed mapping. Basement is the top of structurally complex Precambrian rocks where the Phanerozoic and Proterozoic basins are removed based on geophysical modeling and drill hole interpretation. Statewide elevation datasets are stored as contoured line files and attributed with publication source, contour elevation and date and time of last edit. New raster grids are generated with the 'Topo to Raster' tool in ESRI ArcMap 10.7. 6/2023 Update: The 2023 version of rasters are currently not available online to download but...

Types: Map Service, OGC WFS Layer, OGC WMS Layer, OGC WMS Service; Tags: Geological Collection, Minnesota, basement, bedrock, elevation, All tags... grid, mesozoic, minnesota, ndc_collection, paleozoic, phanerozoic, precambrian, raster, topography, Fewer tags

Land plants equilibrate O2 and CO2 concentrations in the atmosphere.

The role of land plants in establishing our present day atmosphere is analysed. Before the evolution of land plants, photosynthesis by marine and fresh water organisms was not intensive enough to deplete CO(2) from the atmosphere, the concentration of which was more than the order of magnitude higher than present. With the appearance of land plants, the exudation of organic acids by roots, following respiratory and photorespiratory metabolism, led to phosphate weathering from rocks thus increasing aquatic productivity. Weathering also replaced silicates by carbonates, thus decreasing the atmospheric CO(2) concentration. As a result of both intensive photosynthesis and weathering, CO(2 )was depleted from the atmosphere...

Categories: Publication; Types: Citation, Journal Citation; Tags: O2/CO2 ratio, Photosynthesis Research, compensation point, evolution of atmosphere, phanerozoic, All tags... photorespiration, Fewer tags

Formation top shapefile points for the 3D petroleum systems model of the Williston Basin, USA

Formation tops were picked in 16,200 wells from the Williston Basin of North Dakota, South Dakota, and Montana. Each formation top was picked using borehole geophysical log data. Many wells in the Williston Basin do not penetrate the entire stratigraphic section and in many other cases the shallow intervals were not logged. In total, there are 141,096 individual picks composing 29 sets of formation tops. Each top set represents a recognizable stratigraphic marker that can be correlated from well to well. The formation tops serve as foundational observations for building the stratigraphic and structural framework of the 3D petroleum systems model. How each formation top assigns to age, lithostratigraphic unit, and...

Tags: Montana, North Dakota, Phanerozoic, Province 31, South Dakota, All tags... borehole logging, drilling and coring, formation tops, geology, geoscientificInformation, maps and atlases, stratigraphy, structural geology, tectonic processes, Fewer tags