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  • 1
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    Catalogue of Earthquake Hypocenters for Northern Chile from 2007-2021 using IPOC (plus auxiliary) seismic stations (2023)
    GFZ Data Services
    Details
    Publication Date: 2023-04-11
    Description: Abstract
    Description: The present dataset is a comprehensive earthquake catalogue for the Northern Chile subduction zone forearc covering the period 2007-2021, determined from IPOC seismic station data (GFZ and CNRS-INSU 2006; https://doi.org/10.14470/pk615318) plus some auxiliary stations (IPOC = Integrated Plate Boundary Observatory Chile; http://www.ipoc-network.org). The method of automatized earthquake catalogue retrieval, the different relocation steps as well as the different earthquake class labels, and the structures outlined by the seismicity are described in detail in Sippl et al. (2023). The catalogue builds on the one from Sippl et al. (2018; https://doi.org/10.5880/GFZ.4.1.2018.001), but uses a slightly deviating parameter set and a new event category. The columns of the data files are: year, month, day, hour, minute, second, latitude [dec. degrees], longitude [dec. degrees], depth [km], magnitude [ML], identifier The identifier term provides a first-order spatial classification of the seismicity, an explanation is given in Sippl et al. (2023).
    Keywords: IPOC ; Chile ; Integrated Plate Observatory Chile ; EARTH SCIENCE ; EARTH SCIENCE 〉 SOLID EARTH 〉 TECTONICS ; EARTH SCIENCE 〉 SOLID EARTH 〉 TECTONICS 〉 EARTHQUAKES ; EARTH SCIENCE 〉 SOLID EARTH 〉 TECTONICS 〉 EARTHQUAKES 〉 EARTHQUAKE OCCURRENCES ; EARTH SCIENCE 〉 SOLID EARTH 〉 TECTONICS 〉 PLATE TECTONICS ; EARTH SCIENCE 〉 SOLID EARTH 〉 TECTONICS 〉 PLATE TECTONICS 〉 PLATE BOUNDARIES
    Type: Dataset , Dataset
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    DATA GFZ
  • 2
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    Seismicity catalogue for the Eastern Alps (Swath-D) (2023)
    GFZ Data Services
    Details
    Publication Date: 2023-09-01
    Description: Abstract
    Description: We present a new, consistently processed seismicity catalogue for the Eastern and Southern Alps, based on the temporary dense Swath-D monitoring network. The final catalogue includes 6,053 earthquakes for the time period 2017-2019 and has a magnitude of completeness of −1.0ML. The smallest detected and located events have a magnitude of −1.7ML. Aimed at the low to moderate seismicity in the study region, we generated a multi-level, mostly automatic workflow which combines a priori information from local catalogues and waveform-based event detection, subsequent efficient GPU-based event search by template matching, P & S arrival time pick refinement and location in a regional 3-D velocity model. The resulting seismicity distribution generally confirms the previously identified main seismically active domains, but provides increased resolution of the fault activity at depth. In particular, the high number of small events additionally detected by the template search contributes to a more dense catalogue, providing an important basis for future geological and tectonic studies in this complex part of the Alpine orogen.
    Description: TableOfContents
    Description: Seismicity catalogue Python codes & metadata Seismicity cross-sections
    Keywords: Seismology ; Seismic Waveform Analysis ; Eastern Alps ; Earthquake ; Geophysics ; Template matching ; 4DMB ; 4D Mountain Building ; EARTH SCIENCE ; EARTH SCIENCE 〉 SOLID EARTH ; EARTH SCIENCE 〉 SOLID EARTH 〉 TECTONICS ; EARTH SCIENCE 〉 SOLID EARTH 〉 TECTONICS 〉 EARTHQUAKES ; EARTH SCIENCE 〉 SOLID EARTH 〉 TECTONICS 〉 EARTHQUAKES 〉 EARTHQUAKE MAGNITUDE/INTENSITY ; EARTH SCIENCE 〉 SOLID EARTH 〉 TECTONICS 〉 EARTHQUAKES 〉 EARTHQUAKE OCCURRENCES ; geophysics ; seismology ; surface processes ; tectonics
    Type: Dataset , Dataset
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    DATA GFZ
  • 3
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    Paleomagnetic data from Kope-Dagh, Northeast Iran (2023)
    GFZ Data Services
    Details
    Publication Date: 2023-09-12
    Description: Abstract
    Description: This dataset includes paleomagnetic data from 70 sampling sites, collected in northeastern Iran during two campaigns carried out in August 2016 and September 2017 (Table 1). The data are supplement to Mattei et al. (2019). Data allow to reconstruct the rotation history of the outer margin of the Eurasia-Arabia collision area represented by the Ala-Dagh, Binalud and Kopeh-Dagh mountain belts. The sampled formations are red beds units from the Lower Cretaceous Shurijeh Fm. and from the Middle-Upper Miocene Upper Red Fm (URF). Paleomagnetic results from all the sampled areas show a homogeneous amount of clockwise (CW) rotations measured in the above-mentioned Formations. These paleomagnetic results suggest that the oroclinal bending process that caused the curvature of Alborz mountain belt in north Iran after the Middle-Late Miocene, also extended to the Ala-Dagh, Binalud and Kopeh-Dagh mountain belts, at the north-eastern border of the Arabia-Eurasia deforming zone. This pattern of vertical axis rotations is inconsistent with the present-day kinematics of the northern Iranian blocks as described by seismicity and GPS data, suggesting that the tectonic processes responsible for the bending of northern Iran mountain chains are no longer active and that the westward motion of the South Caspian basin, and therefore the initiation of opposite strike-slip motion along the Ashk-Abad and Shahrud faults, occurred very recently (∼2My ago).
    Keywords: northeast Iran ; Kope-Dagh ; Upper Red Formation ; Shurijeh Formation ; natural remanent magnetisation ; paleomagnetic analyses ; tectonic process ; geologic process ; paleomagnetism ; rock magnetism ; paleomagnetic and magnetic data ; EPOS ; multi-scale laboratories ; EARTH SCIENCE 〉 SOLID EARTH 〉 GEOMAGNETISM 〉 PALEOMAGNETISM ; EARTH SCIENCE 〉 SOLID EARTH 〉 TECTONICS ; EARTH SCIENCE 〉 SOLID EARTH 〉 TECTONICS 〉 NEOTECTONICS ; EARTH SCIENCE 〉 SOLID EARTH 〉 TECTONICS 〉 PLATE TECTONICS 〉 CRUSTAL MOTION 〉 CRUSTAL MOTION RATE
    Type: Dataset , Dataset
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    DATA GFZ
  • 4
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    Digital image correlation data and orthophotos from lithospheric-scale analogue experiments of orthogonal extension followed by shortening (2023)
    GFZ Data Services
    Details
    Publication Date: 2023-09-15
    Description: Abstract
    Description: This dataset includes the results of 5 lithospheric-scale, brittle-ductile analogue experiments of extension and subsequent shortening performed at the Geodynamic Modelling Laboratory at Monash University (Melbourne, Australia). Here we investigated (1) the influence of the mechanical stratification of the model layers on rift basins during extension and (2) the influence of these basins on shortening-related structures. This dataset consists of images and movies that illustrate the evolution of topography (i.e., model surface height) and cumulative and incremental axial strain during the experiments. Topography and strain measures were obtained using digital image correlation (DIC) which was applied to sequential images of the model surface. This dataset also includes orthophotos (i.e., orthorectified images) of the model surface, overlain with fault traces and basins that were interpreted using QGIS. The experiments are described in detail in Samsu et al. (submitted to Solid Earth), to which this dataset is supplementary.
    Keywords: analogue modelling ; solid earth ; tectonics ; rifting ; extension ; rift basin ; shortening ; basin inversion ; crustal strength ; orogenesis ; mountain building ; analogue models of geologic processes ; Digital Image Correlation (DIC) ; Particle Image Velocimetry (PIV) ; analogue experiments ; normal fault ; uplift ; positive inversion ; sand ; silicone/PDMS ; Plasticine ; glucose syrup ; geodynamics ; EARTH SCIENCE ; EARTH SCIENCE 〉 SOLID EARTH 〉 GEOMORPHIC LANDFORMS/PROCESSES 〉 TECTONIC LANDFORMS 〉 FAULTS ; EARTH SCIENCE 〉 SOLID EARTH 〉 GEOMORPHIC LANDFORMS/PROCESSES 〉 TECTONIC LANDFORMS 〉 GRABEN ; EARTH SCIENCE 〉 SOLID EARTH 〉 GEOMORPHIC LANDFORMS/PROCESSES 〉 TECTONIC LANDFORMS 〉 HORST ; EARTH SCIENCE 〉 SOLID EARTH 〉 GEOMORPHIC LANDFORMS/PROCESSES 〉 TECTONIC LANDFORMS 〉 MOUNTAINS ; EARTH SCIENCE 〉 SOLID EARTH 〉 TECTONICS ; EARTH SCIENCE 〉 SOLID EARTH 〉 TECTONICS 〉 PLATE TECTONICS ; experiment ; experiment 〉 simulation 〉 modelling ; lithosphere 〉 earth's crust 〉 sedimentary basin
    Type: Dataset , Dataset
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    DATA GFZ
  • 5
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    A database of centrifuge analogue models testing the influence of inherited brittle fabrics on continental rifting (2023)
    GFZ Data Services
    Details
    Publication Date: 2023-12-06
    Description: Abstract
    Description: This dataset presents the raw data of an experimental series of analogue models performed to investigate the influence of inherited brittle fabrics on narrow continental rifting. This model series was performed to test the influence of brittle pre-existing fabrics on the rifting deformation by cutting the brittle layer at different orientations with respect to the extension direction. An overview of the experimental series is shown in Table 1. In this dataset we provide four different types of data, that can serve as supporting material and for further analysis: 1) The top-view photos, taken at different steps and showing the deformation process of each model; they can be used to interpret the geometrical characteristics of rift-related faults; 2) Digital Elevation Models (DEMs) used to reconstruct the 3D deformation of the performed analogue models, allowing for quantitative analysis of the fault pattern. 3) Short movies built from top-view photos which help to visualize the evolution of model deformation; 4) line-drawing of fault and fracture patters to be used for fault statistical quantification. Further details on the modelling strategy and setup can be found in Corti (2012), Maestrelli et al. (2020), Molnar et al. (2020), Philippon et al. (2015), Zwaan et al. (2021) and in the publication associated with this dataset. Materials used for these analogue models were described in Montanari et al. (2017) Del Ventisette et al. (2019) and Zwaan et al. (2020).
    Keywords: analogue modelling ; rift ; East African Rift System ; pre-existing fabrics ; inherited structures ; fault reactivation ; fault ; brittle material ; centrifuge ; centrifuge model ; viscous material ; sandbox experiment ; physical model ; tectonics ; Main Ethiopian rift ; EPOS ; multi-scale laboratories ; analogue models of geologic processes ; analogue modelling results ; property data of analogue modelling materials ; analogue modelling results ; software tools ; compound material 〉 rock ; compound material 〉 sedimentary material ; compound material 〉 sedimentary material 〉 clastic sedimentary material ; compound material 〉 sedimentary material 〉 sediment ; compound material 〉 sedimentary material 〉 sedimentary rock ; compound material 〉 unconsolidated material ; EARTH SCIENCE 〉 SOLID EARTH 〉 TECTONICS ; EARTH SCIENCE 〉 SOLID EARTH 〉 TECTONICS 〉 NEOTECTONICS ; EARTH SCIENCE 〉 SOLID EARTH 〉 TECTONICS 〉 PLATE TECTONICS ; EARTH SCIENCE 〉 SOLID EARTH 〉 TECTONICS 〉 PLATE TECTONICS 〉 CRUSTAL MOTION ; EARTH SCIENCE 〉 SOLID EARTH 〉 TECTONICS 〉 PLATE TECTONICS 〉 FAULT MOVEMENT ; EARTH SCIENCE 〉 SOLID EARTH 〉 TECTONICS 〉 PLATE TECTONICS 〉 FAULT MOVEMENT 〉 FAULT MOVEMENT DIRECTION ; EARTH SCIENCE 〉 SOLID EARTH 〉 TECTONICS 〉 PLATE TECTONICS 〉 STRAIN ; EARTH SCIENCE 〉 SOLID EARTH 〉 TECTONICS 〉 PLATE TECTONICS 〉 STRESS ; EARTH SCIENCE SERVICES 〉 MODELS ; geological process ; geological process 〉 sedimentation (geology) ; In Situ/Laboratory Instruments ; In Situ/Laboratory Instruments 〉 Data Analysis ; lithosphere ; lithosphere 〉 earth's crust ; lithosphere 〉 earth's crust 〉 fault ; lithosphere 〉 earth's crust 〉 sedimentary basin ; lithosphere 〉 rock ; lithosphere 〉 sediment ; material ; material 〉 properties of materials ; Models/Analyses ; Models/Analyses 〉 MODELS ; Phanerozoic 〉 Cenozoic ; research ; research 〉 research project ; research 〉 scientific research
    Type: Dataset , Dataset
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    DATA GFZ
  • 6
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    3D-NEA: Three-dimensional lithospheric-scale structural model of the North East Atlantic (2023)
    GFZ Data Services
    Details
    Publication Date: 2023-12-06
    Description: Abstract
    Description: The Northeast Atlantic (NEA) region has long been a subject of interest due to its complex geological history, particularly regarding the interaction between the Iceland plume and the lithospheric plates. In this data publication, we present a comprehensive three-dimensional structural and density model of the NEA crust and uppermost mantle, consolidating and integrating a wide range of previously fragmented data sets. Our model highlights the influence of the Iceland plume on the region's geological evolution, shedding light on the mechanisms that facilitated the continental breakup between Europe and Laurentia during the earliest Eocene period. The whole workflow and methods are described in Gomez Dacal et al. (2023) and its Supplementary Information.
    Description: TechnicalInfo
    Description: Model coordinates: Model coordinates are given in Equidistant Conic North Atlantic (ECNA): • Projection: Equidistant conic • 1st Standard parallel: 80 • 2st Standard parallel: 70 • Central meridian: -9 • Origin Latitude: 90 • False easting: 805000 • False northing: 3140000 Model dimensions: The horizontal dimensions of the model are 2000 km x 2500 km. The total depth of the model is 300 km. Model bounds in ECNA: Easting: from 0 m to 2000000 m Northing: from 0 m to 2500000 m Model bounds in longitude/latitude (WGS 84): Longitude: from -61° to 54° Latitude: from 60° to 84° Extended model bounds in ECNA: Easting: from -500000 m to 2500000 m Northing: from -500000 m to 3000000 m File description: We provide a set of grid files that collectively allow recreating the 3D geological model which covers the North East Atlantic Ocean and its adjacent areas, including the easternmost area of Greenland, the western coast of Norway, Iceland and Svalbard. The provided structural model consists of 11 units including: (i) sea water and ice; (ii) two layers of sedimentary cover: a shallow and a deep unit; (iii) five crystalline crust units composed of an upper and a lower continental crustal, an oceanic crust and two units of lower crustal bodies (LCB); (iv) two lithospheric mantle units: a continental and an oceanic layer. The structural model has a dimension of 2000 km x 2500 km x 300 km and is provided in regularly spaced grids of 10 km, which are identical for all model units. For the gravity modelling the model limits have been extended by 500 km horizontally in all directions including constraining information for the extended region. The extended model horizons are represented in the density model. Additionally, we provide gravity data, density voxel cube and related tomography data. Files are subdivided into five categories: 1. Structural interface 2. Density model horizon 3. Gravity data 4. Density voxel cube 5. Tomography data
    Keywords: North East Atlantic ; 3D structural model ; georeferenced grids ; crustal structure ; subsurface geology ; layer thickness ; crystalline crust ; lithospheric mantle ; gravity ; tomography ; density ; EARTH SCIENCE 〉 SOLID EARTH ; EARTH SCIENCE 〉 SOLID EARTH 〉 GRAVITY/GRAVITATIONAL FIELD 〉 GRAVITY ; EARTH SCIENCE 〉 SOLID EARTH 〉 GRAVITY/GRAVITATIONAL FIELD 〉 GRAVITY ANOMALIES ; EARTH SCIENCE 〉 SOLID EARTH 〉 TECTONICS ; EARTH SCIENCE 〉 SOLID EARTH 〉 TECTONICS 〉 EARTHQUAKES 〉 SEISMIC PROFILE 〉 SEISMIC BODY WAVES ; EARTH SCIENCE SERVICES 〉 MODELS ; EARTH SCIENCE SERVICES 〉 MODELS 〉 GEOLOGIC/TECTONIC/PALEOCLIMATE MODELS
    Type: Dataset , Dataset
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    DATA GFZ
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