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37 results for “quartzite”
Polish is quantitatively different on quartzite flakes used on different worked materials [R analysis]
<p>This upload includes the following files related to the R analysis:</p> <p>- Raw data as a CSV table (processing-quartzite-final.csv), i.e. results from the ConfoMap analysis (see <a href="https://doi.org/10.5281/zenodo.3979116">https://doi.org/10.5281/zenodo.3979116</a>)</p> <p>- RStudio project (Quantification quartzite final.Rproj)</p> <p>- R scripts as R Markdown files (*.Rmd)</p> <p>- R scripts knitted to HTML files (*.html)</p> <p>- An R script (RStudioVersion.R) to write the used version of RStudio to a text file (RStudioVersion.txt)</p> <p>- Output from script #1: processing-quartzite-final.Rbin and processing-quartzite-final.xlsx</p> <p>- Output from script #2: processing-quartzite-final_summary-stats.xlsx</p> <p>- Output from script #3: all plots as PDF files.</p> <p>Note that for running the scripts, the raw data files (processing-quartzite-final.csv, .Rbin and .xlsx) should be stored in a "Data" folder within the working directory.<br> Output (processing-quartzite-final_summary-stats.xlsx and PDF plots) were saved into "Summary-stats" and "Plots" folders, respectively.</p> <p>Zenodo does not allow sub-folders, so this folder structure had to be removed.</p> <p>Instructions to download all files at once are given here: <a href="https://doi.org/10.5281/zenodo.4011952">https://doi.org/10.5281/zenodo.4011952</a></p>
Polish is quantitatively different on quartzite flakes used on different worked materials [ConfoMap analysis]
<p>Each surface has been processed with two templates:</p> <p>1) Extract two 50x50 µm sub-areas and extract topography layer from each sub-area. Export sub-areas as SUR files. File names start with "A35" or "VSH4".</p> <p>2) Process all extracted sub-areas for quantitative analysis. File names start with "processing-quartzite-final".</p> <p>All ConfoMap templates are saved in MNT format (including all original and processed surfaces, as well as results). Each template has also been exported to a PDF file.</p> <p>Instructions to download all files at once are given here: <a href="https://doi.org/10.5281/zenodo.4011952">https://doi.org/10.5281/zenodo.4011952</a></p> <p>Additionally, the results of the second template are collated into "processing-quartzite-final.csv".</p>
Figure 2 in An unusual new species of Trechona (Araneae: Mygalomorphae: Dipluridae), from quartzitic caves of the Diamantina Plateau, Minas Gerais, Brazil, with a key to the known species
Figure 2. Trechona diamantina sp. nov. (a–c) female paratype MZSP 67,290. (a) Cephalothorax, dorsal view. (b) Cephalothorax, ventral view. (c) Vulva, dorsal view. (d) Vulva, dorsal view, female paratype MZSP 67,291. Scale bars = 1 mm.
Polish is quantitatively different on quartzite flakes used on different worked materials [Python analysis]
<p>This upload includes the following files related to the Python analysis:<br> 1. Raw data as a XLSX table (processing-quartzite-final-2020-04-29.xlsx) is the output from R Script #1 (see <a href="https://doi.org/10.5281/zenodo.3979139">https://doi.org/10.5281/zenodo.3979139</a>), even though the filename is slightly different.</p> <p>Plus, for each analysis (full and restricted datasets), included in the corresponding ZIP archive:<br> 2. Jupyter notebooks of the analysis (Classification_RandSplitFeature_Revision_VXX.ipynb) rendered to HTML file (Classification_RandSplitFeature_Revision_VXX.html)<br> 3. Dataframe including the artificially filled datapoints<br> 4. Output of the analysis as PDF:<br> • Confusion matrices ("CM")<br> • Decision trees on selected features ("DecisionTreeSel")<br> • Balanced accuracy vs. maximum depth ("depth")<br> • Mutual information ("MI")<br> • Pairplots of selected features ("pairplot")<br> • Performance on training sets ("performance")</p> <p>Instructions to download all files at once are given here: <a href="https://doi.org/10.5281/zenodo.4011952">https://doi.org/10.5281/zenodo.4011952</a></p>
Supplementary Data for Manuscript 'Observing impacts on luminescence depth profile evolutions from surface altered quartzite using OSL laser scanning and controlled light exposed rock sampling techniques'
<p>The attached file contains supplementary documents offered in the Quaternary Geochronology manuscript 'Observing<strong> </strong>impacts on luminescence depth profile evolutions from surface altered quartzite using OSL laser scanning and controlled light exposed rock sampling techniques' for the LED2023 special issue. </p>
Data supporting "Influence of water on crystallographic preferred orientation patterns in a naturally-deformed quartzite"
<p>These files contain supporting data for the manuscript: "<span>Influence of water on crystallographic preferred orientation patterns in a naturally-deformed quartzite</span>", submitted to Solid Earth.</p> <p>1) an excel file containing FTIR data, aspect ratios, and crystallographic orientation data of quartz</p> <p>2) a powerpoint file containing a animated gif illustrating how quartz CPO in the studied sample changes with increasing water content</p>
Comparison of brittle- and viscous creep in quartzites: Implications for semi-brittle flow of rocks
<p>A data compilation of deformation experiments performed on quartzites in .pdf and .xlsx formats.</p>
Spatial distributions of Tribrachidium, Rugoconites, and Obamus from the Ediacara Member (Rawnsley Quartzite), South Australia
Open the record for dataset details and reuse information.
Quartzite Pestle
A quartzite pestle recovered during the 1943 archaeological excavations along the Susquehanna River by Richard Stearns. This artifact is part of an archaeology assemblage curated at the Natural History Society of Maryland. Courtesy of the Natural History Society of Maryland which has given permission for the model to be downloadable for non-commercial educational purposes. Source: Objaverse 1.0 / Sketchfab
Supplementary Data for Manuscript 'Observing impacts on luminescence depth profile evolutions from surface altered quartzite using OSL laser scanning and controlled light exposed rock sampling techniques'
<p>This file contains the supplementary data for the manuscript 'Observing impacts on luminescence depth profile evolutions from surface altered quartzite using OSL laser scanning and controlled light exposed rock sampling techniques'</p>
Quartzite Pestle
A quartzite pestle from Hopkins County, Kentucky. This artifact was acquired by the Natural History Society of Maryland during the 1930s or 1940s. Courtesy of the Natural History Society of Maryland which has given permission for the model to be downloadable for non-commercial educational purposes. Source: Objaverse 1.0 / Sketchfab
FIGURES 32–34 in Eukoenenia ibitipoca: the first troglobitic Palpigradi (Arachnida) from a quartzitic cave
FIGURES 32–34. Eukoenenia ibitipoca sp. nov. 32, live specimen walking on a black tray just before collection; 33, inner part of Gruta das Casas, type locality of the new species; 34, landscape in Ibitipoca State Park region, where the Gruta das Casas is located.
FIGURES 28–31 in Eukoenenia ibitipoca: the first troglobitic Palpigradi (Arachnida) from a quartzitic cave
FIGURES 28–31. Eukoenenia ibitipoca sp. nov., female flagellum. 28, segments I–IV; 29, segments IV–VIII; 30, segments VIII–XII; 31, segments XI–XIV. Scale bars 100 μm.
FIGURES 22–27 in Eukoenenia ibitipoca: the first troglobitic Palpigradi (Arachnida) from a quartzitic cave
FIGURES 22–27. Eukoenenia ibitipoca sp. nov. 22, left basitarsus IV, holotype (scale bar 100 μm); 23, opisthosoma, ventral view, paratype male (scale bar 300 μm); 24, first male genital lobe, right half, holotype (scale bar 60 μm); 25, second and third male genital lobes, right half, holotype (scale bar 60 μm); 26, first genital lobe of female (scale bar 60 μm); 27, second genital lobe of female (scale bar 40 μm).
FIGURES 19–21 in Eukoenenia ibitipoca: the first troglobitic Palpigradi (Arachnida) from a quartzitic cave
FIGURES 19–21. Eukoenenia ibitipoca sp. nov. 19, chaetotaxy of opisthosomal tergites IV and V, paratype female (scale bar 60 μm); 20, chaetotaxy of opisthosomal sternite VI, paratype female; two pores between a1 setae are indicated by arrows (scale bar 20 μm); 21, chaetotaxy of opisthosomal sternite V, paratype male (scale bar 20 μm).
FIGURE 35 in Eukoenenia ibitipoca: the first troglobitic Palpigradi (Arachnida) from a quartzitic cave
FIGURE 35. Ground floor of Gruta das Casas, showing the occurence points of the three individuals of Eukoenenia ibitipoca sp. nov. (indicated by arrows) found during the sampling.
FIGURES 8–12 in Eukoenenia ibitipoca: the first troglobitic Palpigradi (Arachnida) from a quartzitic cave
FIGURES 8–12. Eukoenenia ibitipoca sp. nov. 8, coxa of right pedipalp, paratype male; 9, coxa of left leg I, paratype male; 10, coxa of right leg II, holotype; 11, coxa of right leg III, holotype; 12, coxa of right leg IV, paratype male. The thickened setae on coxae II, III and IV are indicated by the solid black arrows; unfilled arrows indicate distal part of each coxa. Scale bars 50 μm.
FIGURES 15–18 in Eukoenenia ibitipoca: the first troglobitic Palpigradi (Arachnida) from a quartzitic cave
FIGURES 15–18. Eukoenenia ibitipoca sp. nov. 15, trochanter—patella of left leg I, paratype male (scale bar 200 μm); 16, tibia—basitarsus 3 of left leg I, paratype male (scale bar 200 μm); 17, basitarsus 4—tarsus 2 of left leg I, paratype male (scale bar 100 μm); 18, tarsus 3 of right leg I, holotype (scale bar 100 μm).
FIGURES 13–14 in Eukoenenia ibitipoca: the first troglobitic Palpigradi (Arachnida) from a quartzitic cave
FIGURES 13–14. Eukoenenia ibitipoca sp. nov. 13, trochanter—tarsus 2 of left pedipalp, paratype male (scale bar 200 μm); 14, tarsus 3 of right pedipalp, holotype (scale bar 60 μm).
FIGURES 4–7 in Eukoenenia ibitipoca: the first troglobitic Palpigradi (Arachnida) from a quartzitic cave
FIGURES 4–7. Eukoenenia ibitipoca sp. nov., paratype male. 4, propeltidial chaetotaxy (scale bar 150 μm); 5, deuto–tritoster- nal setae (scale bar 20 μm); 6, metapeltidial setae (scale bar 50 μm); 7, blades on left lateral organ (scale bar 20 μm).
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