1,721,048 research outputs found
FoldRock: a simulation package for rock folding
No full textContacto: Llorens, Maria-Gema, [email protected] is a package of simulations that model folding processess to unravel the mechanical evolution of large-amplitude folding under pure and simple shear. It allows reproducing the stress and strain evolution.
These numerical simulations have been run with the software Elle (http://elle.ws/; Jessell et al., 2001; Piazolo et al., 2019). FoldRock allows observing the geometrical softening of rocks, determining the efficiency of folding under different scenarios, and provides new constraints during fold evolution.Ministerio de Ciencia, Innovación y Universidades, Grant FJCI-2015-24170 Juan de la CiervaPeer reviewe
Full-Field numerical simulations of sub grain rotation and grain boundary migration in halite during viscoplastic deformation
No full textDRX100/extract_xy_euler3-10.txt, extract_xy_euler3-20.txt extract_xy_euler3-30.txt extract_xy_euler3-33.txt extract_xy_euler3-40.txt extract_xy_euler3-50.txt extract_xy_euler3-60.txt extract_xy_euler3-67.txt extract_xy_euler3-70.txt extract_xy_euler3-80.txt extract_xy_euler3-90.txt extract_xy_euler3-100.txt extract_xy_euler3-110.txt extract_xy_euler3-120.txt extract_xy_euler3-1330.txt
ELLE200/extract_xy_euler3-10.txt, extract_xy_euler3-20.txt extract_xy_euler3-30.txt extract_xy_euler3-33.txt extract_xy_euler3-40.txt extract_xy_euler3-50.txt extract_xy_euler3-60.txt extract_xy_euler3-67.txt extract_xy_euler3-70.txt extract_xy_euler3-80.txt extract_xy_euler3-90.txt extract_xy_euler3-100.txt extract_xy_euler3-110.txt extract_xy_euler3-120.txt extract_xy_euler3-1330.txt
ELLE300/extract_xy_euler3-10.txt, extract_xy_euler3-20.txt extract_xy_euler3-30.txt extract_xy_euler3-33.txt extract_xy_euler3-40.txt extract_xy_euler3-50.txt extract_xy_euler3-60.txt extract_xy_euler3-67.txt extract_xy_euler3-70.txt extract_xy_euler3-80.txt extract_xy_euler3-90.txt extract_xy_euler3-100.txt extract_xy_euler3-110.txt extract_xy_euler3-120.txt extract_xy_euler3-1330.txt
ODF_EBSD_GB_halite.mThe way in which salt flows is highly heterogeneous and results in complex fabrics and structures. To improve our understanding of how halite deforms and recrystallizes under different conditions we performed full-field numerical modelling of polycrystalline aggregates of halite. The numerical approach is based on the coupling of the viscoplastic Full-Field Transform code (VPFFT, Lebensohn and Rollet, 2020) that simulates the viscoplastic deformation and multi-scale platform ELLE (Bons et al, 2008) that has enabled recrystallization processes such as recovery, nucleation and grain boundary migration. This data set This data set contains (i) the output files with the crystal orientation data of simulation DRX_100, DRX_200 and DRX_300, and (ii) a code to plot the crystallographic orientation density function (ODF) using the open-source code MTEX (Mainprice et al., 2011).EGR acknowledges the support of the Ramón y Cajal fellowship (RYC2018-026335-I), funded by the MCIN/AEI/10.13039/501100011033 and the FSE. MGL acknowledges the support of the Q2818002D project, funded by MCIN/AEI/10.13039/501100011033 by European Union NextGenerationEU/PRTR.Peer reviewe
Full-field numerical simulations of ice viscoplastic deformation during two deformation events
No full textThis data set contains the output files with the crystal orientation of each simulation presented in the article Can changes in deformation regimes be inferred from crystallographic preferred orientations in polar ice? https://doi.org/10.5194/tc-16-2009-2022 in this repository http://hdl.handle.net/10261/270644 (run using the open-source software platform ELLE; Bons et al., 2008). For the visualization of the crystallographic preferred orientation the information contained in these output files can be loaded to the software toolbox MTEX (Bachmann, F., Hielscher, R. and Schaeben, H. Grain detection from 2d and 3d EBSD data—Specification of the MTEX algorithm. Ultramicroscopy, 111(12), pp.1720-1733. 2011).Beca Juan de la Cierva-Incorporación (IJC2018-036826-I), financiada por MCIN/AEI/10.13039/501100011033. Beca Ramón y Cajal (RYC2018-026335-I), financiada por MCIN/AEI/10.13039/501100011033 and the FSE. Beca HFG no.VH-NG-802. Proyecto GeoCAM (PGC2018-095154-B-100), financiado por el Gobierno de España.Peer reviewe
NEIGRA - North-East Iberian Granitoids Database. Geochemistry of granitoids and orthogneisses from the Pyrenees and the Catalan Coastal Ranges
No full textGeochemical data of the Variscan gneisses derived from pre-Variscan intrusives and late-Variscan granitoids in the Pyrenees and the Catalan Coastal Ranges were obtained from two main sources: (1) individually mined from published articles and unpublished PhD theses (Autran et al., 1970; Guitard, 1970; Enrique, 1989; Soler and Enrique, 1989; Enrique, 1990; Soler, 1990; Gleizes, 1992; Debon et al., 1996; Arranz, 1997; Guitard et al., 1998b, 1998b; Roberts et al., 2000; Vilà et al., 2005; Casas et al., 2010; Navidad et al., 2010; Druguet et al., 2014; Laumonier et al., 2015; Navidad et al., 2018; Lemirre et al., 2019; Álvaro et al., 2021; Liesa et al., 2021; Casas et al., 2024), and (2) the GEOROC Database (Geochemistry of Rocks of the Oceans and Continents, Göttingen University, https://georoc.eu/; last access: 03/2024; Lehnert et al., 2000). Other Findable, Accessible, Interoperable, and Reusable (FAIR; Wilkinson et al., 2016) databases were searched using geographic and lithogeochemical constrains, yielding no results. The mined data were curated and classified based on the analysed rock types, ages, regional tectonic setting, and mode of occurrence in outcrop, resulting in more than 600 entries that are associated with up to 66 data fields. Associated with each entry are generic, descriptive and informative fields (Sample ID, Unit/Massif, Rock category, Rock details, Outcrop description, and References), major element oxide abundances (SiO2, Al2O3, FeOT, Fe2O3T, MnO, MgO, CaO, Na2O, K2O, TiO2, P2O5, and LOI), and trace element concentrations (Ag, As, Ba, Be, Bi, Co, Cr, Cs, Cu, Ga, Ge, Hf, In, Mo, Nb, Ni, Pb, Rb, Sb, Sc, Sn, Sr, Ta, Th, Tl, U, V, W, Y, Zn, Zr, La, Ce, Pr, Nd, Sm, Eu, Gd, Tb, Dy, Ho, Er, Tm, Yb, and Lu). The resulting database, named NEIGRA (North-East Iberian GRAnitoids), represents the first Open-Access compilation of granite and orthogneiss geochemical data in the Pyrenees and the Catalan Coastal Ranges.This work was funded by DGICYT Projects PID2021-122467NB-C22 and PID2021-125585NB-I00 (MCIN/AEI/FEDER-UE/10.13039/501100011033) and PID2020-118999GB-I00 (MCIN/AEI/10.13039/501100011033), and by the Sedimentary Geology Research Group (2021 SGR 00349). EGE acknowledges the funding provided by the Geological Society of London (GSL) Student Research Grants and the PhD grants funded by Generalitat de Catalunya and the European Social Fund (2021 FI_B 00165 and 2022 FI_B1 00043). CPT acknowledges the PhD grant 2021 FISDU 00347 funded by Generalitat de Catalunya. EGR acknowledges funding provided by the Spanish Ministry of Science, Innovation and Universities (“Ramón y Cajal” fellowship RYC2018-026335-I). CA is grateful to the GEOXis Reseach Group (2021 SGR 00262) and the projects PID2020-117332GB-C21 (USAL) and PID2020-117332GB-C22 (UCM) funded by MCIN/AEI/10.13039/501100011033.00_NEIGRA_Readme; NEIGRA_North-East Iberian GRAnitoids DatabasePeer reviewe
[DATASET] Supporting data for Melt inclusions control seismic anisotropy in deforming partially molten ice
No full text<p>Data used for paper "Melt inclusions control seismic anisotropy in deforming partially molten ice ." </p>
<p>File contains a zipped folder with all data. When unzipped, this contains a subfolder for each test shown in manuscript, labeled by degree of melt and DRX steps used per deformation interval (labeled GBM). Each subfolder contains</p>
<ol>
<li>EBSD outputs from ELLE named as 'extract_xy_euler3-ZZZ', where ZZZ represents the strain percentage at each step (such that extract_xy_euler3-100 is a strain of 1, extract_xy_euler3-120 is a strain of 1.2, etc). The structure of each file is as follows: x - y - euler 1 - euler 2 - euler 3 - VMS stress (not used in the paper) - phase (1 ice, 2 melt), with one entry for each point. </li>
<li>A subfolder labeled 'png,' containing images of the melt at each deformation step. In the case of 0 melt fraction (MF0GBMXX), this is not present. Some images are blank or completely dark due to computation issues. </li>
</ol>
<p> </p>
Shear margins in upper half of Northeast Greenland Ice Stream were established two millennia ago
No full textAbstract
Only a few localised ice streams drain most of the ice from the Greenland Ice Sheet. Thus, understanding ice stream behaviour and its temporal variability is crucially important to predict future sea-level change. The interior trunk of the 700 km-long North-East Greenland Ice Stream (NEGIS) is remarkable due to the lack of any clear bedrock channel to explain its presence. Here, we present a 3-dimensional analysis of the folding and advection of its stratigraphic horizons, which shows that the localised flow and shear margins in the upper NEGIS were fully developed only ca 2000 years ago. Our results contradict the assumption that the ice stream has been stable throughout the Holocene in its current form and show that upper NEGIS-type development of ice streaming, with distinct shear margins and no bed topography relationship, can be established on time scales of hundreds of years, which is a major challenge for realistic mass-balance and sea-level rise projections
Full-Field numerical simulations of olivine dynamic recrystallisation during viscoplastic deformation
No full textOlivine_code.m script in Matlab (MTEX) read the extract_xy_euler3 filesPeridotites, which primarily consist of olivine, are rocks located in the Earth's upper mantle. The mechanical behavior of the upper mantle is heavily influenced by this mineral. When the mantle undergoes flow, olivine experiences viscoplastic deformation, resulting in the development of crystallographic preferred orientations (CPO). Scientists can analyze the observed CPO in olivine-rich rocks to determine the direction of mantle flow. In this study, microdynamic numerical simulations are conducted on aggregates of olivine to investigate the effects of dynamic recrystallization during viscoplastic deformation on the microstructure and CPO. This dataset contains the output files of the simulations PT248, PT263 and PT345, using the viscoplastic fast Fourier transform (VPFFT, Lebensohn and Rollet, 2020) in conjunction with the ELLE modeling platform (Bons et al., 2008). For the visualization of the microstructures the information included in these output files can be launched using the software toolbox MTEX (Bachmann et al., 2011).EGR acknowledges the support of the Ramón y Cajal fellowship (RYC2018-026335-I), funded by the MCIN/AEI/10.13039/501100011033 and the FSE. MGL acknowledges the support of the Q2818002D project, funded by MCIN/AEI/10.13039/501100011033 by European Union NextGenerationEU/PRTR.ELLE_PT248/extract_xy_euler3-1.txt to extract_xy_euler3-100.txt ELLE_PT263/extract_xy_euler3-1.txt to extract_xy_euler3-100.txt ELLE_PT345/extract_xy_euler3-1.txt to extract_xy_euler3-100.txt Olivine_code.mPeer reviewe
Going Beyond Counting First Authors in Author Co-citation Analysis
Full text linkThe present study examines one of the fundamental aspects of author co-citation analysis (ACA) - the way co-citation
counts are defined. Co-citation counting provides the data on which all subsequent statistical analyses and mappings
are based, and we compare ACA results based on two different types of co-citation counting - the traditional type that
only counts the first one among a cited work's authors on the one hand and a non-traditional type that takes into
account the first 5 authors of a cited work on the other hand. Results indicate that the picture produced through this non-traditional author co-citation counting contains more coherent author groups and is therefore considerably clearer. However, this picture represents fewer specialties in the research field being studied than that produced through the traditional first-author co-citation counting when the same number of top-ranked authors is selected and analyzed. Reasons for these effects are discussed
Variations on the Author
Full text link“Variations on the Author” discusses two of Eduardo Coutinho’s recent films (Um Dia na Vida, from 2010, and Últimas Conversas, posthumously released in 2015) and their contribution to the general question of documentary authorship. The director’s filmography is characterized by a consistent yet self-effacing form of authorial self-inscription: Coutinho often features as an interviewer that rather than express opinions propels discourses; an interviewer that is good at listening. This mode of self-inscription characterizes him as an author who is not expressive but who is nonetheless markedly present on the screen. In Um Dia na Vida, however, Coutinho is completely absent form the image, while Últimas Conversas, on the contrary, includes a confessional prologue that moves the director from the margins to the center of his films. This article examines the ways in which these works stand out in the filmography of a director who offers new insights into the notion of cinematic authorship
- …
