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31 results for “Plate reconstructions”
A Quantitative Tomotectonic Plate Reconstruction of Western North America and the Eastern Pacific Basin
<p>The two plate model archives in this directory are linked to the paper (<em>Geochemistry, Geophysics, Geosystems</em>, in press):</p> <p>A Quantitative Tomotectonic Plate Reconstruction of Western North America and the Eastern Pacific Basin by Edward J. Clennett1, Karin Sigloch1, Mitchell G. Mihalynuk2, Maria Seton3, Martha A. Henderson2, Kasra Hosseini1,4, Afsaneh Mohammadzaheri1, Stephen T. Johnston5, and R. Dietmar Muller3</p> <p>1. Department of Earth Sciences, University of Oxford, South Parks Road, Oxford OX1 3AN, UK</p> <p>2. British Columbia Geological Survey, P.O. Box Stn Prov Govt, Victoria, BC, V8W 9N3, Canada</p> <p>3. EarthByte Group, School of Geosciences, The University of Sydney, NSW 2006, Australia</p> <p>4. The Alan Turing Institute, British Library, 96 Euston Road, London NW1 2DB, UK</p> <p>5. Department of Earth and Atmospheric Sciences, University of Alberta, Edmonton, AB T6G 2E3, Canada</p> <p>The zipped archive contains two plate models: <strong>Clennett_etal_2020_M2019.zip</strong> and <strong>Clennett_etal_2020_S2013.zip</strong>. The former is our model in the Müller et al. (2019) reference frame, and the latter is our model implemented into the Shephard et al. (2013) plate reconstruction. Both of these folders contain the same types of files: coastlines, plate boundaries, plate topologies, a rotation file and terrane shapefiles.</p> <p>To view the models, open GPlates (downloadable at: <a href="https://www.gplates.org">www.gplates.org</a>), click 'File' > 'Open Project', navigate to the folder containing the desired model, and then click on the file <strong>Clennett_etal_2020_G3_XXXX.gproj</strong>. This will simultaneously open all the files that comprise the model. A layers panel will appear, with the option to turn on/off certain files. The view can be changed by clicking on the globe, and the model can be run by clicking the play button in the animation bar, starting from 170Ma. Features can be inspected by clicking the 'choose feature' tab, selecting a feature, and clicking 'query feature'.</p> <p>The files that comprise the model are described below:</p> <p>1. <strong>Clennett_etal_2020_Coastlines.gpml</strong>: Coastlines used in the reconstruction. The coastlines of western North America and Mexico were edited from the global model to account for later terrane accretions. </p> <p>2. <strong>Clennett_etal_2020_NAm_bounds.gpml</strong>: File containing the new plate boundaries digitised in this study.</p> <p>3. <strong>Clennett_etal_2020_Plates.gpml</strong>: File containing the edited plate boundaries of the global model, as well as our new continuously-closing plate topologies.</p> <p>4. <strong>Clennett_etal_2020_Rotations.rot</strong>: This is the rotation file that contains the relative motions between plates, terranes and plate boundaries for western North America and the eastern Pacific basin. The first column specifies the plate ID, the second column the timestep, the third, fourth and fifth columns are the latitude, longitude and angle of the stage rotations, and the sixth column is the plate that the feature moves relative to. Most lines are accompanied with a comment describing the rotation.</p> <p>5. <strong>Clennett_etal_2020_Terranes.gpml</strong>: This file contains all the terranes shown in the model. We further divided these into superterranes, so that each can be coloured accordingly for better visualisation purposes: a. Angayucham.gpml b. Farallon.gpml c. Guerrero.gpml d. Insular.gpml e. Intermontane.gpml f. Kula.gpml g. North_America.gpml h. Western_Jurassic.gpml</p> <p>6. <strong>Movie</strong> <strong>S1</strong>. Movie showing plate evolution at 1 million-year intervals, embedded within the Muller et al. (2019) global model. Blue boundaries are subduction zones, red boundaries are mid-ocean ridges, green boundaries are transform faults, and pink boundaries are other unspecified boundaries. Plates are not labelled but can be identified from figures 5-10.</p> <p>7. <strong>Movie S2</strong>. Movie showing plate evolution at 1 million-year intervals, embedded within the Shephard et al. (2013) global model. Blue boundaries are subduction zones, red boundaries are mid-ocean ridges, green boundaries are transform faults, and pink boundaries are other unspecified boundaries. Plates are not labelled but can be identified from figures 5-10.</p> <p> </p> <p>The agegrids and spreading rate grids associated with this model can be accessed at: <a href="https://repo.gplates.org/webdav/PlateModel_Age_SR_Grids/Clennett_etal_2020_G3/" target="_blank" rel="noopener">https://repo.gplates.org/webdav/PlateModel_Age_SR_Grids/Clennett_etal_2020_G3/</a></p>
nal; E', F', internal, G'-J', Pal. 1341 (peripheral 8); G', H', external; I', J', internal; K'-N', Pal. 1343 (peripheral 9); K', L', external; M', N', internal; O'-R', Pal. 1345 (peripheral 10); O', P', external; Q', R', internal; S'-V', Pal. 1348 (peripheral 11); S', T', external; U', V', internal views; W', reconstruction of carapace Thick lines correspond to scute sulci, dotted lines denote plate sutures, and oblique lines indicate missing plate portions. Abbreviations: Ce, cervical; co, costal; Ma, marginal; ne, neural; nu, nuchal; per, peripheral; Pl, pleural; py, pygal; sp, suprapygal; Spr, supracaudal; Ve, vertebral. Scale bars: A-V', 1 cm; W', 2.5 cm. in Fossil turtles from the early Miocene localities of Mokrá-Quarry (Burdigalian, MN4), South Moravian Region, Czech Republic
nal; E', F', internal, G'-J', Pal. 1341 (peripheral 8); G', H', external; I', J', internal; K'-N', Pal. 1343 (peripheral 9); K', L', external; M', N', internal; O'-R', Pal. 1345 (peripheral 10); O', P', external; Q', R', internal; S'-V', Pal. 1348 (peripheral 11); S', T', external; U', V', internal views; W', reconstruction of carapace Thick lines correspond to scute sulci, dotted lines denote plate sutures, and oblique lines indicate missing plate portions. Abbreviations: Ce, cervical; co, costal; Ma, marginal; ne, neural; nu, nuchal; per, peripheral; Pl, pleural; py, pygal; sp, suprapygal; Spr, supracaudal; Ve, vertebral. Scale bars: A-V', 1 cm; W', 2.5 cm.
sal; W, visceral; X-Z, Pal. 1308 (costal 5); X, Y, dorsal; Z, visceral; A'-C', Pal. 1309 (costal 6); A', B', dorsal; C', visceral; D'-F', Pal. 1310 (costal 8); D', E', dorsal; F', visceral; G'-J', Pal. 1312 (peripheral 1); G', H', dorsal; I', J', visceral; K'-N', Pal. 1313 (peripheral 7); K', L', dorsal; M', N', visceral; O'-R', Pal. 1314 (peripheral 8); O', P', dorsal; Q', R', visceral views; S', reconstruction of carapace. Thick lines indicate to scute sulci, dotted lines sutures and oblique lines denote missing plate portions. Abbreviations: Ce, cervical; co, costal; Ma, marginal; ne, neural; nu, nuchal; per, peripheral; Pl, pleural; py, pygal; sp, suprapygal; Ve, vertebral. Scale bars: 1 cm. in Fossil turtles from the early Miocene localities of Mokrá-Quarry (Burdigalian, MN4), South Moravian Region, Czech Republic
sal; W, visceral; X-Z, Pal. 1308 (costal 5); X, Y, dorsal; Z, visceral; A'-C', Pal. 1309 (costal 6); A', B', dorsal; C', visceral; D'-F', Pal. 1310 (costal 8); D', E', dorsal; F', visceral; G'-J', Pal. 1312 (peripheral 1); G', H', dorsal; I', J', visceral; K'-N', Pal. 1313 (peripheral 7); K', L', dorsal; M', N', visceral; O'-R', Pal. 1314 (peripheral 8); O', P', dorsal; Q', R', visceral views; S', reconstruction of carapace. Thick lines indicate to scute sulci, dotted lines sutures and oblique lines denote missing plate portions. Abbreviations: Ce, cervical; co, costal; Ma, marginal; ne, neural; nu, nuchal; per, peripheral; Pl, pleural; py, pygal; sp, suprapygal; Ve, vertebral. Scale bars: 1 cm.
(Dataset) Evaluating tomotectonic plate reconstructions using geodynamic models with data assimilation, the case for North America
<p>Dataset for the paper:</p> <p>Evaluating tomotectonic plate reconstructions using geodynamic models with data assimilation, the case for North America</p> <p>For more infomation, please look into the README file or contact ljliu@illinois.edu, thank you!</p>
Fig. 11 in Phylogenetic reconstruction based on COI reshuffles the taxonomy of hyalosphenid shelled (testate) amoebae and reveals the convoluted evolution of shell plate shapes
Fig. 11. Shape PCA performed exclusively on barcoded Quadrulella cell morphology based on the test length (L), breadth (B), L/B ratio and the size of plates [min./max. values and surface of nine plates (µm2)]. The shape PCA was performed according to the MRA method (Baur and Leuenberger, 2011). Q. madibai can be discriminated based on its very small B/L ratio and its high aperture/B ratio (cf. Table 4), although it is not visible on the PCA.
Fig. 12. Morphological comparison between Quadrulella symmetrica s.s. and Q in Phylogenetic reconstruction based on COI reshuffles the taxonomy of hyalosphenid shelled (testate) amoebae and reveals the convoluted evolution of shell plate shapes
Fig. 12. Morphological comparison between Quadrulella symmetrica s.s. and Q. cf. symmetrica cells using MRA method. The shape PCA was performed using the same parameters as in Fig. 11.
Fig. 1 in Phylogenetic reconstruction based on COI reshuffles the taxonomy of hyalosphenid shelled (testate) amoebae and reveals the convoluted evolution of shell plate shapes
Fig. 1. Schematic demonstration of measured axes of the test: (1) length, (2) breadth, (3) width of aperture (pseudostome) and (4) width of the shell plates (scales).
Fig. 10 in Phylogenetic reconstruction based on COI reshuffles the taxonomy of hyalosphenid shelled (testate) amoebae and reveals the convoluted evolution of shell plate shapes
Fig. 10. Morphological comparison of Gibbocarina galeata comb. nov. (previously Nebela galeata) and Mrabella subcarinata gen. nov., comb. nov. (previously Quadrulella subcarinata). (a) line drawing of Gibbocarina galeata from Congo by Gauthier-Lièvre (1957). (b and c) scanning and light micrographs of M. subcarinata from South Africa. Scale bars = 50 µm (a) and 20 µm (b).
Fig. 3 in Phylogenetic reconstruction based on COI reshuffles the taxonomy of hyalosphenid shelled (testate) amoebae and reveals the convoluted evolution of shell plate shapes
Fig. 3. Light micrographs of barcoded Quadrulella symmetrica s.s. cells: (a) cell Q-75; (b) cell Q-83; (c) cell Q-81; (d) cell Q-90; (e) cell Q-63; (f) cell Q-73; (g) cell Q-51; (h) cell Q-102; (i) cell Q-100; (j) cell Q-95; (k) cell Q-82; (l) cell Q-51. Scale bars = 10 µm.
Fig. 4 in Phylogenetic reconstruction based on COI reshuffles the taxonomy of hyalosphenid shelled (testate) amoebae and reveals the convoluted evolution of shell plate shapes
Fig. 4. Light micrographs of two Quadrulella madibai sp. nov. barcoded cells: (a) cell Q-11; (b) cell Q-9. Scale bars = 10 µm.
Fig. 7 in Phylogenetic reconstruction based on COI reshuffles the taxonomy of hyalosphenid shelled (testate) amoebae and reveals the convoluted evolution of shell plate shapes
Fig. 7. Light micrographs of three barcoded Mrabella subcarinata cells (previously known as Quadrulella subcarinata): (a) cell Q-1; (b) cell Q-2; (c) cell Q- 16. Scale bars = 20 µm (in a and b) and 50 µm (in c).
Fig. 6 in Phylogenetic reconstruction based on COI reshuffles the taxonomy of hyalosphenid shelled (testate) amoebae and reveals the convoluted evolution of shell plate shapes
Fig. 6. Light micrographs of barcoded Quadrulella alata cells: (a) cell Q-8; (b) cell Q-7; (c) cell Q-17; (d) cell Q-15. Scale bars = 20 µm (in a and b) and 50 µm (in c and d).
Fig. 5 in Phylogenetic reconstruction based on COI reshuffles the taxonomy of hyalosphenid shelled (testate) amoebae and reveals the convoluted evolution of shell plate shapes
Fig. 5. Light (a) and scanning electron (b) micrographs of Quadrulella quadrigera from Australia. Image (a) has been stacked with Combine ZP. Scale bars = 40 µm.
Fig. 2 in Phylogenetic reconstruction based on COI reshuffles the taxonomy of hyalosphenid shelled (testate) amoebae and reveals the convoluted evolution of shell plate shapes
Fig. 2. Light micrographs of barcoded Quadrulella variabilis sp. nov. cells: (a) cell Q-54; (b) cell Q-48; (c) cell Q-52; (d) cell Q-101; (e) cell Q-98; (f) cell Q-53. Scale bars = 10 µm.
Fig. 9 in Phylogenetic reconstruction based on COI reshuffles the taxonomy of hyalosphenid shelled (testate) amoebae and reveals the convoluted evolution of shell plate shapes
Fig. 9. Maximum likelihood bootstrap consensus tree of 34 Quadrulella COI sequences and 71 other hyalosphenid sequences based on a 684- nucleotide position alignment. The numbers along the branches represent respectively the bootstrap values obtained by maximum-likelihood analysis, posterior probability values obtain by Bayesian analysis and parsimony scores obtain by maximum parsimony analysis. Only values above 50/0.50/50 are shown. The tree is rooted with the Padaungiella–Alocodera group. The scale bar corresponds to the mean number of nucleotide substitutions per site on the respective branch.
Fig. 8 in Phylogenetic reconstruction based on COI reshuffles the taxonomy of hyalosphenid shelled (testate) amoebae and reveals the convoluted evolution of shell plate shapes
Fig. 8. Scanning electron micrographs illustrating morphological variations within the Quadrulella cf. symmetrica morphospecies. (a) Q. cf. symmetrica_BG from Bulgaria; (b) Q. cf. symmetrica_CA from Canada; (c) Q. cf. symmetrica_CH from Switzerland; (d) Q. variabilis with a long neck (ex: Q. longicollis) from Bulgaria. Scale bars = 20 µm. Image from Kosakyan et al. (2012) with permission from the editor.
GPlates files, python code, and crustal thickness estimates used to build all of the deformable plate reconstructions presented in King and Welford 2022a and 2022b.
Open the record for dataset details and reuse information.
A Modified Global Plate Model Including Quantitative Tomotectonic Plate Reconstruction of Western North America and the Eastern Pacific Basin
<p>This plate model is based on that of Clennett et al. (2020) (<a href="../records/10348271" target="_blank" rel="noopener">https://zenodo.org/records/10348271</a>). The Clennett et al. (2020) model was an extension of the global model of Müller et al. (2019) (<a href="../records/10525287" target="_blank" rel="noopener">https://zenodo.org/records/10525287</a>), with a focus on producing a more detailed tectonic reconstruction of the North American Cordillera. Further minor modifications were made to the model for a paper by Alfonso et al. (2024), using the <em>GPlates</em> software (<a href="https://url.au.m.mimecastprotect.com/s/JVvZCE8wmrt1kqgwPtNcn8j?domain=gplates.org/" target="_blank" rel="noopener">https://www.gplates.org/</a>). Firstly, several subduction zones in the published plate model have no associated motions, instead remaining entirely stationary relative to the mantle. This was judged to be incompatible with basic geodynamic principles, as geodynamic models indicate that trenches and subducting slabs are almost always in motion relative to the mantle, exhibiting retreat or, more rarely, advance (e.g. Capitanio, 2013; Capitanio et al., 2010; Schellart et al., 2007; Stegman et al., 2010). As trenches of intermediate length generally display relatively slow retreat (Schellart, 2008), a small amount of trench rollback was imposed on the subduction zones in this model, whilst ensuring that they remained located above their associated tomographically-imaged slabs. Additionally, the Orcas plate (170–130 Ma), located within the Cordilleran archipelago, was split into two sections separated by an east-west trending mid-ocean ridge, consistent with the subsequent plate configuration after 130 Ma. This was done to improve the consistency of the plate motion model, which appeared to indicate divergence within the Orcas plate and convergence at its boundaries. Finally, the reconstruction’s absolute plate motion model was recalculated using the iterative optimisation workflow developed by Tetley et al. (2019).</p> <p> </p> <p>The agegrids associated with this model can be accessed from: <a href="https://repo.gplates.org/webdav/PlateModel_Age_SR_Grids/Alfonso_etal_2024_modClennettMuller/" target="_blank" rel="noopener">https://repo.gplates.org/webdav/PlateModel_Age_SR_Grids/Alfonso_etal_2024_modClennettMuller/</a></p> <p> </p>
Back-arc tectonics and plate reconstruction of the Philippine Sea-South China Sea region since the Eocene
<p>This repository contains GPlates plate reconstruction model, CitComS simulation original results and supplementary movies for "<strong>Back-arc tectonics and plate reconstruction of the Philippine Sea-South China Sea region since the Eocene</strong>" as below:</p> <p>1. Liu_etal_GRL_PS_SCS.zip</p> <p>2. Temperature_field_along_sections.zip</p> <p>3. Movie_S1_Plate_motion_since_55_Ma_with_oceanic_crust_age.mp4</p> <p>4. Movie_S2_Plate_motion_since_55_Ma.mp4</p>
Reconstruction Plate Compared With Flexible Intramedullary Nailing for Midshaft Clavicular Fractures
ClinicalTrials.gov study NCT01410032. IPD Sharing: Not stated. Countries: 1. Publications: 1.
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