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Web archive derivatives of the collection Geologic Field Trip Guidebooks Web Archive from the Ivy Plus Libraries Confederation. The derivatives were created with the Archives Unleashed Toolkit and Archives Unleashed Cloud. The ivy-12576-parquet.tar.gz derivatives are in the Apache Parquet format, which is a columnar storage format. These derivatives are generally small enough to work with on your local machine, and can be easily converted to Pandas DataFrames. See this notebook for examples. Domains .webpages().groupBy(ExtractDomainDF($"url").alias("url")).count().sort($"count".desc) Produces a DataFrame with the following columns: domain count Web Pages .webpages().select($"crawl_date", $"url", $"mime_type_web_server", $"mime_type_tika", RemoveHTMLDF(RemoveHTTPHeaderDF(($"content"))).alias("content")) Produces a DataFrame with the following columns: crawl_date url mime_type_web_server mime_type_tika content Web Graph .webgraph() Produces a DataFrame with the following columns: crawl_date src dest anchor Image Links .imageLinks() Produces a DataFrame with the following columns: src image_url Binary Analysis Audio Images PDFs Presentation program files Spreadsheets Text files Word processor files The ivy-12576-auk.tar.gz derivatives are the standard set of web archive derivatives produced by the Archives Unleashed Cloud. Gephi file, which can be loaded into Gephi. It will have basic characteristics already computed and a basic layout. Raw Network file, which can also be loaded into Gephi. You will have to use that network program to lay it out yourself. Full text file. In it, each website within the web archive collection will have its full text presented on one line, along with information around when it was crawled, the name of the domain, and the full URL of the content. Domains count file. A text file containing the frequency count of domains captured within your web archive.

This compilation contains data reported in the manuscript Cardenas, Lamb, Jobe, Mohrig, and Swartz, Morphodynamic preservation of fluvial channel belts. As of Nov 2022, this manuscript is submitted to SEPM (Society for Sedimentary Geology) journal The Sedimentary Record. Compilation contains: (1) Table showing the edge coordinates of each channel belt in the associated manuscript. (2) Table showing centerline point coordinates. (3) Table showing all width measurements for each channel belt. (4) A compilation table showing representative geometric measurements for each belt. (5) A python script to generate paleoflow directions from centerline coordinates. (6) A script to generate various geometric measurements from belt edge coordinates. (7) A script to plot histograms of geometric measurements.

Ages of Younger Toba Tephra and Oldest Toba Tephra according to (Mark et al., 2017; doi:10.1016/j.quageo.2017.01.002); calcareous nannofossil ages according to the Geologic Time Scale of Gradstein et al. (2012); planktonic foraminifera ages according to Wade et al. (2011; doi:10.1016/j.earscirev.2010.09.003); (4) magnetic reversals according to Channell et al. (2008; doi:10.1016/j.epsl.2008.07.005). N/A not available. FO first occurrence. LO last occurrence. Note that parentheses give minimum and maximum depth of occurrence.

Precise knowledge about the extent of the West Antarctic Ice Sheet (WAIS) at the Last Glacial Maximum (LGM; c. 26.5-19 cal. ka BP) is important in order to 1) improve paleo-ice sheet reconstructions, 2) provide a robust empirical framework for calibrating paleo-ice sheet models, and 3) locate potential shelf refugia for Antarctic benthos during the last glacial period. However, reliable reconstructions are still lacking for many WAIS sectors, particularly for key areas on the outer continental shelf, where the LGM-ice sheet is assumed to have terminated. In many areas of the outer continental shelf around Antarctica, direct geological data for the presence or absence of grounded ice during the LGM is lacking because of post-LGM iceberg scouring. This also applies to most of the outer continental shelf in the Amundsen Sea. Here we present detailed marine geophysical and new geological data documenting a sequence of glaciomarine sediments up to ~12 m thick within the deep outer portion of Abbot Trough, a palaeo-ice stream trough on the outer shelf of the Amundsen Sea Embayment. The upper 2-3 meters of this sediment drape contain calcareous foraminifera of Holocene and (pre-)LGM age and, in combination with palaeomagnetic age constraints, indicate that continuous glaciomarine deposition persisted here since well before the LGM, possibly even since the last interglacial period. Our data therefore indicate that the LGM grounding line, whose exact location was previously uncertain, did not reach the shelf edge everywhere in the Amundsen Sea. The LGM grounding line position coincides with the crest of a distinct grounding-zone wedge ~100 km inland from the continental shelf edge. Thus, an area of >6000 km² remained free of grounded ice through the last glacial cycle, requiring the LGM grounding line position to be re-located in this sector, and suggesting a new site at which Antarctic shelf benthos may have survived the last glacial period. Supplement to: Klages, Johann Philipp; Kuhn, Gerhard; Hillenbrand, Claus-Dieter; Smith, James A; Graham, Alastair G C; Nitsche, Frank-Oliver; Frederichs, Thomas; Jernas, Patrycja E; Gohl, Karsten; Wacker, Lukas (2017): Limited grounding-line advance onto the West Antarctic continental shelf in the easternmost Amundsen Sea Embayment during the last glacial period. PLoS ONE, 12(7), e0181593

We measured the concentration of in situ Be-10 and Al-26 in quartz separated from medium (250-850 micron) detrital river sand collected from 22 watersheds in central Cuba. Samples were collected in summer 2018 from watersheds ranging in size from 2 to 730 km². Be and Al extraction was completed at the University of Vermont Community Cosmogenic Facility and accelerator mass spectrometer measurements were made at PRIME Lab. Many of the sampled basins are low slope (average < 1 degree) and underlain by marine rocks. Samples are from the same locations as published chemical weathering rates inferred from dissolved loads in river water (Bierman et al. 2020).

Heterogeneous data collection in the marine environment has led to large gaps in our knowledge of marine species distributions. To fill these gaps, models calibrated on existing data may be used to predict species distributions in unsampled areas, given that available data are sufficiently representative. Our objective was to evaluate the feasibility of mapping cetacean densities across the entire Mediterranean Sea using models calibrated on available survey data and various environmental covariates. We aggregated 302,481 km of line transect survey effort conducted in the Mediterranean Sea within the past 20 years by many organisations. Survey coverage was highly heterogeneous geographically and seasonally: large data gaps were present in the eastern and southern Mediterranean and in non-summer months. We mapped the extent of interpolation versus extrapolation and the proportion of data nearby in environmental space when models calibrated on existing survey data were used for prediction across the entire Mediterranean Sea. Using model predictions to map cetacean densities in the eastern and southern Mediterranean, characterised by warmer, less productive waters, and more intense eddy activity, would lead to potentially unreliable extrapolations. We stress the need for systematic surveys of cetaceans in these environmentally unique Mediterranean waters, particularly in non-summer months. Mediterranean gap analysis in environmental spaceThis .zip folder contains the data and an R script to reproduce the gap analysis documented in Mannocci et al. 2018.Data_Scientific_Reports.zip

Contourite drift deposits characterise the middle Eocene sequences of International Ocean Discovery Program (IODP) Site U1408 and Site U1410 (Newfoundland Ridge, North Atlantic, IODP Expedition 342). The onset of contourite deposition occurred at both Sites around 47 Ma, when an order-of-magnitude increase in terrigenous mass accumulation rate resulted in high overall sedimentation rates (>2 cm/kyr) and a sedimentary system sensitive to astronomical insolation forcing. The Expedition science party joined forces to obtain cm-resolution benthic isotope data, as well as X-Ray Fluorescence (XRF) core scans for this unique Eocene sedimentary archive. This dataset contains high-resolution benthic foraminiferal stable isotope records (N = 3424) and X-ray Fluorescence (XRF) derived elemental ratios (N = 9662). These proxy record are presented along a new two-site composite section and a robust stratigraphic framework that acknowledges the fragmentary nature of the individual IODP Sites.

The archive Muller_etal_2022_SE_1Ga_Opt_PlateMotionModel.zip contains the files for the plate model in an optimised mantle reference frame. GPlates or pyGPlates software (www.gplates.org) is needed to read these files. The archive Muller_etal_2022_SE_mantle-ref-frame-oceanic-crustal-agegrids.zip contains the oceanic crustal age grids in netCDF-4 format for the optimised mantle reference frame plate model, while the archive Muller_etal_2022_SE_PMAG_oceanic-crustal-agegrids.zip contains the oceanic crustal age grids in netCDF-4 format for the paleomagnetic reference frame plate model from Merdith et al. (2021). The agegrids associated with this model can be accessed at: https://repo.gplates.org/webdav/PlateModel_Age_SR_Grids/Muller_etal_2022_SE/