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The 3002’ length core was extracted from the Redstone Quarry in Conway, NH in 1975 as part of an evaluation of geothermal potential produced by the natural decay of several radioactive minerals present in the Jurassic age Conway Granite pluton. The core extracted from the borehole at the Redstone Quarry is the deepest core drilled in New Hampshire. The Redstone Core project was part of a collaboration between the New Hampshire State Geologist and the U.S. Energy Research and Development Administration. Significant geothermal resources were not found. NHGS estimates that approximately half of the original 3002’ foot core remains in core boxes with sufficient documentation tags to identify the depth intervals each...
The rock core documents in this collection were collected by the the Kentucky Geological Survey when a rock core or other sample was turned into Earth Analysis Research Library. These documents were scanned with funding from the 2022 USGS Data Preservation Program. The scanned documents in this collection provide important information, including lithologic descriptions, geochemical analysis, project details, and related publications.
Categories: Collection,
Data;
Tags: Collection,
historicalArchive,
methods > laboratory methods > core analysis,
ndc_collection,
onGoing
This collection documents LAS files associated with various borehole geophysical logs saved at the IGS. The collection may contain LAS files created while “logging” a well or by digitization of historic geophysical logs.
Categories: Collection,
Data;
Tags: Borehole geophysical logs,
Collection,
data management,
digitization,
information technology methods,
The dataset consists of more than 3,000 sites in Iowa that contain detailed, regional alluvial stratigraphic nomenclature. The dataset is comprised of boring, dug pit, and cutbank descriptions predominately from the Iowa Office of the State Archaeologist, but also from other alluvial studies, including those conducted by the IGS. The majority of these descriptions were first published in documents from the 1990s, but also included data collected in the 1970s and 1980s.
Categories: Collection,
Data;
Tags: Collection,
Geological Collection,
Lithology logs,
Stratigraphic horizons,
Well Logs,
This dataset provides the geographical locations of karst groundwater basins, groundwater flowpaths, and dye injection/recovery points in Kentucky. Dye tracing is a common method used for understanding groundwater flow pathways and connectivity. Dye is poured (or injected) into a sinking stream, well, sinkhole, or body of flowing water, where it is carried down-gradient. The locations at which dye is detected (or recovered) indicates a connection from injection to recovery site. This connection is a groundwater flowpath. As more dye traces are conducted, flowpath convergence or lack thereof can be used to draw karst groundwater basins, which are analogous to surficial watersheds. Karst groundwater basins differ...
Categories: Collection,
Data;
Tags: Collection,
EARTH SCIENCE,
EARTH SCIENCE,
EARTH SCIENCE,
EARTH SCIENCE,
This collection consists of samples of the Entrada Sandstone and Pony Express Limestone from the Placerville vanadium-uranium district in southwest Colorado. The samples were collected under the direction of Harry Granger to compare some of the geochemical attributes of the Placerville district deposits to the more widespread Salt Wash hosted deposits. These samples were also used by George Breit for research to determine an age of the roscoelite (V-illite). Samples are stored in fabric bags in cardboard boxes on one wood pallet.
This collection consists of materials that were collected during the Atomic Energy Commission drilling program in the Slick Rock district in southwestern Colorado. There are six core boxes that contain tins holding heavy mineral separates originally prepared from core samples collected by Dan Shawe. The heavy mineral separate samples include materials recovered from cores drilled in three areas of the Slick Rock district: Legin (abbreviated to LE in sample IDs), Spud Patch (abbreviated to SP in sample IDs), and Disappointment Valley (abbreviated to DV or DVR in sample IDs). The analysis of the separates is described in USGS Bulletin 1107-B and Professional Paper 576-D. The mineral separates were later processed...
Photographs of core from 56 boreholes in Earth MRI focus areas in Wisconsin hosted on the WGNHS data viewer. Focus areas represented are: Midcontinent Rift mafic-ultramafic satellite intrusions, Paleoproterozoic weathering beneath mature quartzites, Upper Mississippi Valley Mineral District, Wolf River Batholith, and Upper Ordovician Phosphates.Focus areas are south of ceded territories except for the Midcontinent Rift mafic-ultramafic satellite intrusions, also know as the Round Lake exploration, as this is the only known site of exploration for a critical mineral, vanadium, in Wisconsin. Borehole data for these 56 drillholes has also been created. The core represented in the photographs is a subset of the collection,...
Borehole Logs: The NJGWS inventoried, scanned and created metadata of geophysical logs and associated files for its collection of wells. This collection includes geologic borehole logs from various projects from around the state created by private entities and donated to the NJGWS.
Categories: Collection,
Data;
Types: Map Service,
OGC WFS Layer,
OGC WMS Layer,
OGC WMS Service;
Tags: Collection,
methods > field methods > field inventory and monitoring > borehole logging,
ndc_collection,
onGoing
This collection consists of core plugs and pulverized samples taken from three Green River oil shale cores. The cores are: Blacks Fork, Coyote Wash and Barcus Creek cores. These cores were each drilled in the depositional center of the three major Green River basins in Wyoming, Colorado, and Utah to support research into oil shale resources. The cores themselves are part of the UGSG Core Research Center Collection of Core. Samples were taken in the 1980s to support research focused on the geochemistry of the Green River oil shale by Michele Tuttle. The samples are maintained as a collection to support future research for Colorado, Wyoming, and Utah oil shale projects, specifically for the development of infrared...
The soil cores in this collection were collected by the the Kentucky Geological Survey in primarily Western and Northern Kentucky between 2004 – 2021 primarily through USGS-funded STATEMAP projects.
Categories: Collection,
Data;
Tags: Collection,
historicalArchive,
methods > laboratory methods > core analysis,
ndc_collection,
ndc_collection,
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