The Index to Marine and Lacustrine Geological Samples (IMLGS) product is being decommissioned. Archived IMLGS data will only be available via an archive request to ncei.info@noaa.gov. The planned retirement date is May 5th, 2025.

   The Index to Marine and Lacustrine Geological Samples (IMLGS) describes and provides access to ocean floor and lakebed rock and sediment samples curated by participating institutional and government repositories in the U.S., Canada, the United Kingdom, France, and Germany. Each curatorial facility prepares and submits data about their own collection to NCEI for inclusion in the IMLGS. NCEI, on behalf of the Curator community, maintains the IMLGS database and a dedicated web application for data discovery and access. Physical material from most samples may be requested from the responsible Curator for scientific research using contact information provided in IMLGS data listings. As of July 2023, the IMLGS includes information for 228,785 discrete seabed and lakebed cores, grabs, dredges, and drill holes worldwide. 

   Minimum sample information required for the IMLGS includes ship/platform name, cruise ID, sample ID, sampling device, and latitude/longitude. Water depth, collection date, storage method, and principal investigator are usually included. Core dimensions and depth to top and bottom of interval is available for many core samples. Descriptions, comments, physiographic province, lithology, texture, mineralogy, other components, glass remarks, metamorphism information, weathering information, color, and geologic age are included for some samples. An International Generic Sample Number (IGSN) is included, if available. Links are also provided to related data and images at NCEI, partner institutions, and to other sources of information including the System for Earth SAmple Registration (SESAR) and the Rolling Deck to Repository (R2R). 

   The IMLGS database was initially designed by a group of Curators, in cooperation with NGDC (now NCEI), at a series of meetings sponsored by the U.S. National Science Foundation (NSF) beginning in 1977. The Curators group continues to meet annually to share best practices and oversee the IMLGS database.

TThis data release includes measurements of properties from sedimentary cores collected from Henrys Lake in Idaho. We present a CSV with basic information about the cores (e.g., length, collection location, water depth), and three CSVs with the fallout radionuclide (FRN), particle size analysis (PSA), and radiocarbon (RC) data. It also has three child items with x-ray computed tomography (CT) scan images, line image scans, and multisensory core log (MSCL) data for the seven cores from Henry’s Lake, and magnetic susceptibility point (MSP) data for select cores.

Physical and chemical properties of sediment cores from Lake Fryxell, Antarctica, provide a means of reconstructing past paleoenvironmental, water-level, and water-source changes over the last 60,000 years. This dataset includes stable isotope (O, C), radiocarbon, U-series, sedimentological, and loss-on-ignition data. The oxygen data relate primarily to water-source changes in the lake basin. Carbon (both stable and radioactive) isotopes are influenced heavily by lake stratification and depth of the photic zone. The data record surface level changes of Lake Fryxell over the past 60,000 years. In addition, the dated sediments constrain the Ross Sea ice sheet to east of (seaward of) the lake through that entire time. Finally, stable oxygen isotopes document water source changes switching from local alpine glacier meltwater to Ross Sea ice sheet meltwater and then back to local glacier meltwater.

The British Ocean Sediment Core Research Facility (BOSCORF), National Oceanography Centre, is a contributor to the Index to Marine and Lacustrine Geological Samples (IMLGS) database. As a partner repository, BOSCORF sends information related to their sample collection to NCEI for discoverability via the IMLGS. Some related core photographs are also archived at NCEI. BOSCORF maintains a more complete archive of data and information related to their collection, searchable on their website.

The MARine Sediment (MARS) database contains detailed information on seabed sediment characteristics for samples collected from Australia's marine jurisdiction, including the Australian Antarctic Territory. It also includes the Geat Barrier Reef (GBR). It is an important scientific resource that includes survey and sample information such as locations, water depths and sample descriptions. Data are also provided from quantitative analyses of the sediments, such as grain size, mud, sand, gravel and carbonate concentrations, mineralogy, age determinations, geochemical properties, and physical attributes for down-core samples including bulk density, p-wave velocity, porosity and magnetic susceptibility. Images and graphics are presented, where available. MARS currently holds >40,000 sample and sub-sample records, and approximately 200,000 records describing the characteristics of these samples. New data are being added as they become available.

It includes: Core, Dredge, Grab, Water, Column and Camera samples.

Format: Data can be downloaded in CSV format for: - All sample data, - CaCO3 as mud/sand/gravel/bulk, - CaCO3 +grain size as mud/sand/gravel/[bulk|mean], - Grain size as mud/sand/gravel/mean, - Grain size for laser, - Grain size all, - Minerals with method of ICP-MS/XRF - Salinity.

The full database is a 500 MB CSV.

For the eAtlas the "CaCO3 +grain size as mud/sand/gravel/[bulk|mean]" CSV file was downloaded and converted to a shapefile for visualisation. This is available for download from this record.

This metadata is not an authoritative source and was developed for the eAtlas. Please check or contact Geoscience Australia for authoritative metadata. The original data is available for download via the Marine Sediments (MARS) Database Search (http://www.ga.gov.au/oracle/mars/).

The full database contains samples of the following type (this list is taken for data from 2010 - 2015): PROPERTY UOM Ag ppm Al mg/kg Al2O % Al2O3 w% Al2O3 % As ppm As mg/kg Authigenic-P umol/g Ba ppm Be ppm Bi ppm Ca mg/kg CaCO3 % CaO w% CaO % carbonate content % Cd ppm Cd mg/kg Ce ppm Chlorin index
Chlorophyll a ug/g Chlorophyll b ug/g Chlorophyll c ug/g Cl ppm Co mg/kg Co ppm Cr mg/kg Cr ppm Cs ppm Cu mg/kg Cu ppm delta 13C o/oo delta 15N o/oo Detrital-P umol/g Dy ppm Er ppm Eu ppm Fe mg/kg Fe2O3 % Fe2O3TOT w% Ga ppm Ga mg/kg Gd ppm Ge ppm grain size % grain size um grain size No unit grain size m2/g Hf ppm Ho ppm K2O w% K2O % La ppm Lu ppm Mg mg/kg MgO w% MgO % MINERAL w% MLOI w% Mn mg/kg MnO w% MnO % Mo ppm Mo mg/kg Na2O w% Na2O % Nb ppm Nd ppm Ni mg/kg Ni ppm O2 mmol/m2/d Organic-P umol/g Oxide Associated-P umol/g P mg/kg P2O5 w% P2O5 % Pb ppm Pb mg/kg pH
Phaeophytin ug/g porosity % Pr ppm Rb ppm S mg/kg salinity
Sb ppm Sc ppm Sc % Se mg/kg SiO2 w% SiO2 % Sm ppm Sn ppm SO3 w% SO3 % SOD %/g/d specific surface area m2/g Sr ppm Ta ppm Tb ppm TCO2 mmol/m2/d Th ppm TiO2 w% TiO2 % TKN % TN % TOC % Total sediment metabolism umol/cm3/d Total sediment metabolism umol/g/d U ppm V mg/kg V ppm W ppm Water temperature degC Y ppm Yb ppm Zn mg/kg Zn ppm Zr ppm

The data contained in this database corresponds to the radiochemical and chemical analysis for the sediment profile samples collected by AIMS' biogeochemistry team between 1988 and 2005. The collection spans different regions within Australia, Malaysia, Timor Leste and Timor Sea region, Papua New Guinea, China, Thailand and Indonesia. Samples were collected from offshore, coastal and river areas, using a variety of methods over the timeframe.

The data has contributed to studies in sediment mass balance in rivers, estuaries, deep water shelf and slopes to determine the environmental impact in tropical systems, nutrient budgets and dynamics. Research in both organic and inorganic carbon biomarkers and fluxes have developed carbon budget and carbon cycling dynamics for marine environments.

The databases includes sediment descriptions of samples, measurements for geochemical mass balance, and analysis for trace elements including Aluminium, Carbon and Nitrogen and calculated ratios of Aluminium/Calcium, Carbonate Carbon and in some locations Arsenic and suspended sediment. Radiochemical analysis of some sediment core samples and surface water samples for natural isotopes of radium.

Sampling equipment included Kasten Corer, Piston/Gravity Corer, Box Corer, Smith Macintyre Grab, Van Veen Grab, hand collection SCUBA, soil profile and Suspended Sediment samples, and sediment traps.

Scientists from the U.S. Geological Survey (USGS), St. Petersburg Coastal and Marine Science Center collected a set of sediment cores from the back-barrier environments along the Chandeleur Islands, Louisiana, in March 2012. The sampling efforts were part of a larger USGS study to evaluate effects on the geomorphology of the Chandeleur Islands following the construction of an artificial sand berm to reduce oil transport onto federally managed lands. The objective of this study was to evaluate the response of the back-barrier tidal and wetland environments to the berm. This report serves as an archive for sedimentological and radiochemical data derived from the sediment cores. The data described in this report is available for download.

This repository includes sediment core data collected at seven sites along the northern Outer Banks, North Carolina, USA. From north to south, the sites include Pine Island, Corolla Reserve, Duck, the US Army Corps of Engineers Field Research Facility (FRF) North, FRF South, Southern Shores (i.e., Hillcrest Beach Access), and Nags Head (Bonnett St. Beach Access). At each site, internal dune sedimentology and stratigraphy were characterized using sediment vibracores, each 1.5–2.2 m long, collected along a cross-shore transect from the dune toe to the dune heel. Coring locations were selected based on dune morphology to capture the stratigraphy of the dune toe, stoss slope, primary dune crest, lee slope, swale, and secondary dune crest, as applicable. Sediment core locations were documented using RTK-GPS and are included in the .kmz file. All sediment cores were split, photographed, described for sedimentary structures, texture (as compared to standards), mineralogy, and color (Munsell, 2012). Sediment cores were described using the Modified Burmister System in 10-cm intervals, with additional intervals added as needed to capture stratigraphic units with thicknesses less than 10 cm but greater than 1 cm. Sediment core log descriptions are included in the NOAA_NCDunes_Vibracore_CoreLogs.xlsx data file. Sediment size and shape were analyzed from oven-dried samples using a CAMSIZERX2Ⓡ. These data are included in the Dune_Grain_Size_camsizer_outputs.csv data file. Metrics reported for each sample include the following: Site, Core ID, Sample Number, Depth (cm below ground surface), Elevation (m, NAVD88), D2 (mm), D5 (mm), D10 (mm), D16 (mm), D25 (mm), D50 (mm), D75 (mm), D84 (mm), D90 (mm), D95 (mm), D98 (mm), average grain symmetry, average grain sphericity, average grain aspect ratio, percent pebble, percent granule, percent very coarse sand, percent coarse sand, percent medium sand, percent fine sand, percent very fine sand, and percent silt. More details regarding these measurements can be found in the following manuscript: Davis, E.H., Hein, C.J., Cohn, N., White, A.E., Zinnert, J.C. Differences in internal sedimentologic and biotic structure between natural, managed, and constructed coastal foredunes (in review).

A modest addendum to the English Sediment Core Meta-database

We assessed sediment coring, data acquisition, and publications from the North Pacific (north of 30°N) from 1951-2016. There are 2134 sediment cores collected by American, French, Japanese, Russian, and international research vessels across the North Pacific (including the Pacific Subarctic Gyre, Alaskan Gyre, Japan Margin, and California Margin, 1391 cores), Sea of Okhotsk (271 cores), Bering Sea (123 cores), and Sea of Japan (349 cores) reported here. All existing metadata associated with these sediment cores are documented, including coring date, location, core number, cruise number, water depth, vessel metadata, and coring technology. North Pacific age models are based on isotope stratigraphy, radiocarbon dating, magnetostratigraphy, biostratigraphy, tephrochronology, % opal, color, and lithophysical proxies. Here, we evaluate the iterative generation of each published age model and provide documentation of each dating technique used, as well as sedimentation rates and age ranges. We categorized cores according to availability of a variety of proxy evidence, including biological (e.g. benthic and planktonic foraminifera assemblages), geochemical (e.g. heavy metal concentrations), isotopic (e.g. bulk sediment nitrogen and carbon isotopes), and stratigraphic (e.g. preserved laminations) proxies. This database is a unique resource to the paleoceanographic and paleoclimate communities, and provides cohesive accessibility to sedimentary sequences, age model development, and proxies.

Dataset includes details of cores collected as part of cruise NBP1502A, a list of radiocarbon-dated samples and samples to be radiocarbon-dated, and grain-size data from select NBP1502A cores.

This dataset includes Pb-210 activities, grain-size distributions, and x-radiograph negatives for cores collected primarily during NBP1603 (and also LMG1510) as part of the FjordEco project in Andvord Bay and surrounding areas (Gerlache Strait, and Station B on the shelf). Data are from subsampled intervals of kasten cores and box cores, as well as one megacore. Samples were x-rayed, sliced, and bagged onboard the vessel. Grain-size and Pb-210 analyses were completed in the Sediment Dynamics Lab within the University of Washington School of Oceanography (PI C. Nittrouer).

This dataset provides total Pb-210 (Lead-210) activity values (and corresponding dry bulk density values and porosities) for three sediment cores collected during a 2023 Arctic Chief Scientist training cruise on R/V Sikuliaq. Cores were collected from the Gulf of Alaska and Alaskan Beaufort Sea in June 2023 for training purposes and because of curiosity about general sediment accumulation rates in these areas. Cores were subsampled at 1 centimeter (cm) intervals in the field and returned to Oregon State University (OSU) for post-processing. In addition to Pb-210 activities and related parameters, sediment grain-size distribution data are also provided for one core. Core 01MC was a gravity core and cores 04MC and 08MC were multicores.

A dataset of historical sediment Carbon and Nitrogen isotope measurements from lake cores (n=95) spanning the range of lake types and catchments found across the UK. These data have been obtained from the Environmental Change Research Centre (ECRC) lake sediment core archive with well-resolved time intervals (1850, 1900, 1980 and present) determined by radiometric dating (210Pb; 137Cs). This data has been collated to investigate historical sources and accumulation of C and N in lakes. This dataset provides historical data for hydrological / nutrient modelling from the Long Term Large Scale (LTLS) Project in the NERC Macronutrients programme.

This dataset was archived on 2018-04-04 from the EPD database (http://www.europeanpollendatabase.net).

This dataset is about: Susceptibility raw data of sediment core PS2174-5. Please consult parent dataset @ https://doi.org/10.1594/PANGAEA.712144 for more information.

This part of the data release is a spreadsheet including radiocarbon sample information and calibrated ages of sediment cores collected in 2009 offshore of Palos Verdes, California. It is one of seven files included in this U.S. Geological Survey data release that include data from a set of sediment cores acquired from the continental slope, offshore Los Angeles and the Palos Verdes Peninsula, adjacent to the Palos Verdes Fault. Gravity cores were collected by the USGS in 2009 (cruise ID S-I2-09-SC; http://cmgds.marine.usgs.gov/fan_info.php?fan=SI209SC), and vibracores were collected with the Monterey Bay Aquarium Research Institute's remotely operated vehicle (ROV) Doc Ricketts in 2010 (cruise ID W-1-10-SC; http://cmgds.marine.usgs.gov/fan_info.php?fan=W110SC). One spreadsheet (PalosVerdesCores_Info.xlsx) contains core name, location, and length. One spreadsheet (PalosVerdesCores_MSCLdata.xlsx) contains Multi-Sensor Core Logger P-wave velocity, gamma-ray density, and magnetic susceptibility whole-core logs. One zipped folder of .bmp files (PalosVerdesCores_Photos.zip) contains continuous core photographs of the archive half of each core. One spreadsheet (PalosVerdesCores_GrainSize.xlsx) contains laser particle grain size sample information and analytical results. One spreadsheet (PalosVerdesCores_Radiocarbon.xlsx) contains radiocarbon sample information, results, and calibrated ages. One zipped folder of DICOM files (PalosVerdesCores_CT.zip) contains raw computed tomography (CT) image files. One .pdf file (PalosVerdesCores_Figures.pdf) contains combined displays of data for each core, including graphic diagram descriptive logs. This particular metadata file describes the information contained in the file PalosVerdesCores_Radiocarbon.xlsx. All cores are archived by the U.S. Geological Survey Pacific Coastal and Marine Science Center.

Marine sediment core data from the Lomonosov Ridge off Greenland, Arctic Ocean

No description is available. Visit https://dataone.org/datasets/8d83a69610114c9fe0c21be240f2832d for complete metadata about this dataset.

Sound knowledge about the petrophysical characteristics of a sediment core is a prerequisite for any subsequent paleoenvironmental study relying on sediment proxies. Physical properties of whole-round sediment cores are acquired as a first step of sediment core description, prior to slicing of sediment cores into two halves. Here, we present processed physical-properties data of core MSM31_557-4_SL acquired with a Geotek MSCL-S system on the unsplit core, retrieved during RV Maria S. Merian expedition MSM31 from the Yermak Plateau in summer 2013. Cores were processed according to the standard protocol given by the manufacturer Geotek Ltd.