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36 results for “exhumation”
Miocene construction of the High Andes recorded by exhumation of the Frontal Cordillera, La Ramada Massif of western Argentina (32°S) (Supporting Information)
<p>Supporting datasets for Howlett et al., "Miocene construction of the High Andes recorded by exhumation of the Frontal Cordillera, La Ramada Massif of western Argentina (32°S)" in <em>TECTONICS.</em></p>
Constraining Andean Propagation of Exhumation at the Limit of the Eastern Cordillera, NW Argentina, using Low-Temperature Thermochronology in a Structural Context - Supporting Information
<p>Supporting information accompanying the publication "Constraining Andean Propagation at the Limit of the Eastern Cordillera, NW Argentina, using Low-Temperature Thermochronology in a Structural Context" published in Tectonics. The dataset contains apatite and zircon (U-Th-Sm)/He and apatite fission track data from the Tilcara Range and San Lucas block, Jujuy, Argentina, as well as additional QTQt thermal models that are discussed in the paper.</p> <p>Table S1 contains full single-grain results from apatite fission track, apatite (AHe) (U-Th-Sm)/He and zircon (ZHe) (U-Th-Sm)/He analyses. Outliers are marked in grey and are not included in the weighted mean age. Figure S1 supports (U-Th-Sm)/He data graphically. Apatite fission track (AFT) data is supported by radial plots in Figure S2. Figure S3 shows QTQt thermal models using either AHe, AFT or ZHe single-grain ages. All of the models results are explained in the main text.</p>
Supplementary material to: "Formation of low-pressure reaction textures during near-isothermal exhumation of hot orogenic crust (Bohemian Massif, Austria)"
<p>Supplemantary material to "Sorger, D., Hauzenberger, C. A., Finger, F., Linner, M., Skrzypek, E., & Schorn, S. (2024). Formation of low-pressure reaction textures during near-isothermal exhumation of hot orogenic crust (Bohemian Massif, Austria). Journal of Metamorphic Geology, 42(1), 3–34."</p>
Buoyancy-driven exhumation of lawsonite-bearing eclogites and blueschists in the Lanling area, central Qiangtang Terrane, Tibetan Plateau
<p>All these data tables are used to suport to manuscript, titled "Buoyancy-driven exhumation of lawsonite-bearing eclogites and blueschists in the Lanling area, central Qiangtang Terrane, Tibetan Plateau".</p>
Miocene construction of the High Andes recorded by exhumation of the Frontal Cordillera, La Ramada Massif of western Argentina (31°S) (Supporting Information)
<p>Supporting datasets for Howlett et al., "Miocene construction of the High Andes recorded by exhumation of the Frontal Cordillera, La Ramada Massif of western Argentina (31°S)" <em><strong>in review</strong></em> at <em>Earth and Planetary Science Letters (EPSL) </em>as of <strong>April 3, 2024.</strong></p>
Thermal evolution of the metamorphism in the eastern Taiwan Central Range: implications for Yuli Belt exhumation
<p>The Yuli Belt exposed in the eastern part of Taiwan’s Central Range hosts slivers of blueschist-facies meta-igneous rocks that were tectonically emplaced into a mostly greenschist-facies, polyphase deformed metasedimentary succession. Suturing the Eurasian continental plate, the subducted South China Sea plate, the proposed subducted forarc basement, and the Luzon Island arc of the Philippine Sea Plate, the Yuli Belt is a key site for understanding the geodynamic reconstruction of the Taiwan orogeny. In this paper, we reinvestigated the tectonic evolution of the Yuli Belt. The Yuli Belt of the eastern Taiwan Central Range encloses high pressure (HP) mafic–ultramafic blocks and hosts intensely deformed greenschist-facies metasediments. It is still debated if the Chulai Formation to the east is part of the Yuli Belt. To solve this problem, we provide new maximum metamorphic temperature in both units using Raman spectroscopic geo-thermometry in relation to structural deformation. The new peak metamorphic temperatures compiled with published data support systematic spatial variations across the eastern Taiwan Central Range. The Yuli Belt shows peak temperatures of ca. 400°C~550°C higher than those of adjacent units. Temperatures >500°C in the Yuli Belt are close to three HP blocks. The temperature difference between the Yuli Belt and Chulai Formation reaches over 100°C. It is likely that the contact between both units is a fault and that they underwent the same deformation history after its E-vergent backfolding phase. The new peak metamorphic temperatures compiled with published data support systematic spatial variations across the eastern Taiwan Central Range. A revised geological map was generated by the incorporation of new structural data of the metasediments from several river-transects in the eastern Central Range.</p>
Data for "Formation of topographic benches and noses from the exhumation of crater-filling alluvial strata on Mars"
<p>Numerical model, batch scripts, experiment parameters, and results used for the publication "Formation of topographic benches and noses from the exhumation of crater-filling alluvial strata on Mars".</p>
Oligocene–Miocene exhumation of the Pinaleño metamorphic core complex, southeastern Arizona: support for magmatism and plate margin reorganization as controls on regional exhumation trends
<p>We present thermochronology data from igneous and metamorphic rock samples collected from the Pinale<strong>ñ</strong>o Mountains, southeast Arizona, U.S.A. Our interpretations of the data are described and discussed in a paper in the journal Tectonics, titled “Oligocene–Miocene exhumation of the Pinaleño metamorphic core complex, southeastern Arizona: support for magmatism and plate margin reorganization as controls on regional exhumation trends.” New data include biotite and white mica Ar/Ar analyses, apatite fission track analyses, apatite (U-Th-Sm)/He analyses, and zircon (U-Th-Sm)/He analyses. The data were used for inverse HeFTy modeling and forward radiation damage and annealing modeling (RDAAM) to investigate time-temperature histories. The data set comprises a table summarizing the results of Ar/Ar analyses (Table S1), a table with the detailed results of zircon (U-Th-Sm)/He thermochronology (Table S2), a table with the detailed results of apatite (U-Th-Sm)/He thermochronology (Table S3), a table summarizing the results of apatite fission track analyses, including radial plots (Table S4), and a table summarizing the input data and constraints used for inverse modeling.</p>
Erosional exhumation of carbonate rock facilitates dispersal-mediated allopatric speciation in freshwater fishes
<p>A fundamental goal of evolutionary biology is to understand the mechanisms that generate and maintain biodiversity. Discovery and delimitation of species represent essential prerequisites for such investigations. We investigate a freshwater fish species complex comprising <em>Etheostoma bellator</em> and the endangered <em>E. chermocki</em> which is endemic to the Black Warrior River system in Alabama, USA, a global hotspot of temperate freshwater biodiversity. Phylogenomic analyses delimit five geographically disjunct species masquerading as <em>E. bellator</em>. Three of these new species exhibit microendemic distributions comparable to that of <em>E. chermocki</em> raising the possibility that they also require protection. The species of the complex are found in streams flowing over carbonate rock and they are separated by waterways flowing over siliciclastic rock, a geographic pattern dictated by the underlying stratigraphy and structural geology. Over time, rivers have eroded downward through layers of siliciclastic rocks in the basin, gradually exposing underlying carbonate rock, the substrate of suitable habitat today. Our results suggest that episodic dispersal to patches of suitable habitat set the stage for allopatric speciation in the species complex. Our study suggests that the presence of heterogeneous rock can facilitate dispersal-mediated allopatric speciation in freshwater organisms in the absence of external tectonic or climatic perturbations.</p>
Erosional exhumation of carbonate rock facilitates dispersal-mediated allopatric speciation in freshwater fishes
Open the record for dataset details and reuse information.
Thermometry and microstructural analysis imply protracted extensional exhumation of the Tso Morari UHP nappe, northwestern Himalaya: implications for models of UHP exhumation
<p>Documenting the processes that facilitate exhumation of ultra-high pressure (UHP) rocks at convergent margins is critical for understanding orogen dynamics. Here, we present structural and temperature data from the Himalayan UHP Tso Morari nappe (TMN) and overlying nappes, which we integrate with published pressure-temperature-time constraints to refine interpretations for their structural evolution and exhumation history. Our data indicate that the 5.5 km-thick TMN is the upper portion of a penetratively deformed ductile slab, which was extruded via distributed, pure shear-dominated, top-down-to-east shearing. Strain in the TMN is recorded by high-strength quartz fabrics (density norms between 1.74-2.86) and finite strain data that define 63% transport-parallel lengthening and 46% transport-normal shortening. The TMN attained peak temperatures of ~500-600°C, which decrease in the overlying Tetraogal and Mata nappes to ~150-300°C, defining a field gradient as steep as 67°C/km. Within the overlying nappes, quartz fabric strength decreases (density norms between 1.14-1.21) and transport-parallel lengthening and transport-normal shortening decrease to 14% and 18%, respectively. When combined with published 40Ar/39Ar thermochronometry, quartz fabric deformation temperatures as low as ~330°C indicate that the top-to-east shearing that exhumed the TMN continued until ~30 Ma. Peak temperatures constrain the maximum depth of the overlying Mata nappe to 12.5-17.5 km; when combined with published fission-track thermochronometry, this provides further support that the TMN was not underplated at upper-crustal levels until ~30 Ma. The long-duration, convergence-subnormal shearing that exhumed the TMN outlasted rapid India-Asia convergence by ~15 Myr and may be the consequence of strain partitioning during oblique convergence.</p>
Fluid-driven mass transfer during retrograde metamorphism and exhumation of the UHP Western Gneiss Region terrane, Norway
<p>This dataset contains supplementary files for the published manuscript entitled "Fluid-driven mass transfer during retrograde metamorphism and exhumation of the UHP Western Gneiss Region terrane, Norway."</p>
Seismically imaged mantle exhumation in the Southwest Taiwan Basin of the northeastern South China Sea margin
<p>Dataset for submission of Geochemistry, Geophysics, Geosystems.</p>
Rapid exhumation to the north of the eastern Himalayan syntaxis in the Quaternary revealed by thermoluminescence (TL) thermochronometry
<p>This file includes all the data related to the manuscript "Rapid exhumation to the north of the eastern Himalayan syntaxis in the Quaternary revealed by thermoluminescence (TL) thermochronometry".</p>
Dataset for: Constraining the duration and ages of stratigraphic unconformities on Mars using exhumed craters
<h1>Dataset for: Constraining the duration and ages of stratigraphic unconformities on Mars using exhumed craters</h1> <p><strong>Annex & Lewis</strong></p> <h2><strong>Data Product Overview</strong></h2> <p>This repository contains all source data for the publication. Below is a description of each general data product type, software that can load the data, and a list of the file names along with the short description of the data product.</p> <p><strong>Perimeters.gpkg & csv</strong></p> <p>Contains the mapped linear perimeters of the layered deposits discussed in the manuscript. Geopackage files can be read using GIS software like QGIS and ArcGIS as well as the OGR/GDAL suite. CSV is also provided.</p> <p><strong>Craters.gpkg & csv</strong></p> <p>Contains the polygon geometries for the craters counted along the linear perimeters. Geopackage files can be read using GIS software like QGIS and ArcGIS as well as the OGR/GDAL suite. CSV is also provided.</p> <p><strong>environment.yml</strong></p> <p>Anaconda conda environment configuration file that can be used by users to create a functional conda environment.</p> <p><strong>requirements.txt</strong></p> <p>Python dependencies needed to run the included Jupyter Notebook for pip users.</p> <p><strong>linear_crater_counting.ipynb</strong></p> <p>Jupyter notebook file that contains the python code for the manuscript as well as the code to generate all the figures in the paper. </p> <p>The notebook can also be run via Binder at <a href="https://mybinder.org/v2/zenodo/10.5281/zenodo.8298786" target="_blank" rel="noopener">https://mybinder.org/v2/zenodo/10.5281/zenodo.8298786</a></p> <p> </p>
FIGURE 4. Drosera villosa. A in Exhuming Saint-Hilaire: revision of the Drosera villosa complex (Droseraceae) supports 200 year-old neglected species concepts
FIGURE 4. Drosera villosa. A, habitat, in cracks of sandstone along the margin of a river at Parque Estadual da Serra do Ibitipoca, Minas Gerais. B, habitat, along trailside in high-montane campo rupestre at Parque Estadual do Ibitipoca, Minas Gerais. C, habit. D, detail of the center of the rosette, showing the densely eglandular-pilose petioles and emerging flower scape. E, flower. (A–D by P.M. Gonella; E by A. Fleischmann.)
FIGURE 17. Drosera chimaera. A in Exhuming Saint-Hilaire: revision of the Drosera villosa complex (Droseraceae) supports 200 year-old neglected species concepts
FIGURE 17. Drosera chimaera. A, habitat at the type location near Cristália, Minas Gerais. B, flower. C, rosette seem from above, with juvenile inflorescence. D, detail of the base of the inflorescence, with dense indumentum of eglandular trichomes. (All by P.M. Gonella.)
FIGURE 3. Drosera villosa. A, habit. B in Exhuming Saint-Hilaire: revision of the Drosera villosa complex (Droseraceae) supports 200 year-old neglected species concepts
FIGURE 3. Drosera villosa. A, habit. B, detail of the indumentum of the base of the scape. C, detail of the indumentum of the apex of the scape. D, stipule. E, leaf, adaxial surface. F, leaf, abaxial surface. G, cross section of the petiole at mid length. H, calyx. J, petal. K, stamen. L, gynoecium. M, seed. (Based on Ferrero et al. 02 – drawn by P.M. Gonella.)
FIGURE 8. Drosera graomogolensis. A, habit. B in Exhuming Saint-Hilaire: revision of the Drosera villosa complex (Droseraceae) supports 200 year-old neglected species concepts
FIGURE 8. Drosera graomogolensis. A, habit. B, detail of the indumentum of the base of the scape. C, detail of the indumentum of the apex of the scape. D, E, stipule. F, leaf, adaxial surface. G, leaf, abaxial surface. H, cross section of the petiole at the middle. J, calyx. K, petal. L, stamen. M, gynoecium. N, seed. (A–E, H–M based on Gonella et al. 485; F, N based on Gonella et al. 486 – drawn by P.M. Gonella.)
FIGURE 11. Drosera latifolia. A, B, habit. C, D, stipule. E in Exhuming Saint-Hilaire: revision of the Drosera villosa complex (Droseraceae) supports 200 year-old neglected species concepts
FIGURE 11. Drosera latifolia. A, B, habit. C, D, stipule. E, leaf, adaxial surface. F, leaf, abaxial surface. G, outline of a leaf, showing the distribution of eglandular trichomes on the petiole adaxial surface. H, J, K, leaf outlines (dotted line indicates the limit between lamina and petiole). L, M, cross section of the petiole at mid length. (A, C, E, based on Gonella et al. 452; B, D, K, based on Rivadavia et al. 1083; F, M based on Rivadavia 2515; G, L based on Rivadavia 2137; H based on Rivadavia & Gibson 1379; J based on Rivadavia et al. 2464 – drawn by P.M. Gonella.)
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OpenNeuro
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