Geologie: Recent submissions
Anzeige der Dokumente 226-250 von 933
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A site formation model for Cuncaicha rock shelter: Depositional and postdepositional processes at the high‐altitude keysite in the Peruvian Andes
(Geoarchaeology, 2021-11-14)We report results from geoarchaeological investigations at Cuncaicha rock shelter (4480 m above sea level) in the high Andes of southern Peru. Using field observations, geomorphological, micromorphological, micro‐Fourier ... -
Impact of Late Cretaceous inversion and Cenozoic extension on salt structure growth in the Baltic sector of the North German Basin
(Basin Research, 2021-10-04)The Late Cretaceous to Cenozoic is known for its multiple inversion events, which affected Central Europe's intracontinental sedimentary basins. Based on a 2D seismic profile network imaging the basin fill without gaps ... -
Upward‐Doming Zones of Gas Hydrate and Free Gas at the Bases of Gas Chimneys, New Zealand's Hikurangi Margin
(Journal of Geophysical Research: Solid Earth, 2021-09-21)Focused gas migration through the gas hydrate stability zone in vertical gas conduits is a global phenomenon. The process can lead to concentrated gas hydrate formation and seafloor gas seepage, which influences seafloor ... -
Rock Glacier Characteristics Under Semiarid Climate Conditions in the Western Nyainqêntanglha Range, Tibetan Plateau
(Journal of Geophysical Research: Earth Surface, 2022-01-07)Rock glaciers are receiving increased attention as a potential source of water and indicator of climate change in periglacial landscapes. They consist of an ice‐debris mixture, which creeps downslope. Although rock glaciers ... -
Late Pleistocene‐Holocene Slip Rates in the Northwestern Zagros Mountains (Kurdistan Region of Iraq) Derived From Luminescence Dating of River Terraces and Structural Modeling
(Tectonics, 2021-08-23)A significant amount of the ongoing shortening between the Eurasian and Arabian plates is accommodated within the Zagros Fold‐Thrust Belt. However, the spatial and temporal distribution of active shortening within the belt, ... -
Faulting and Magmatic Accretion Across the Overlapping Spreading Center Between Vance Segment and Axial South Rift, Juan de Fuca Ridge
(Geochemistry, Geophysics, Geosystems, 2022-01-12)Plate divergence along mid‐ocean ridges is accommodated through faulting and magmatic accretion, and, at overlapping spreading centers (OSC), is distributed across two curvilinear overlapping ridge axes. One‐meter resolution ... -
Preserved landscapes underneath the Antarctic Ice Sheet reveal the geomorphological history of Jutulstraumen Basin
(Earth Surface Processes and Landforms, 2021-08-28)The landscape of Antarctica, hidden beneath kilometre‐thick ice in most places, has been shaped by the interactions between tectonic and erosional processes. The flow dynamics of the thick ice cover deepened pre‐formed ... -
Automated facies identification by Direct Push‐based sensing methods (CPT, HPT) and multivariate linear discriminant analysis to decipher geomorphological changes and storm surge impact on a medieval coastal landscape
(Earth Surface Processes and Landforms, 2021-09-23)In ad 1362, a major storm surge drowned wide areas of cultivated medieval marshland along the north‐western coast of Germany and turned them into tidal flats. This study presents a new methodological approach for the ... -
Characterization of (paleo)lacustrine landforms using sedimentological and portable OSL investigations at Schweriner See, north‐eastern Germany
(Earth Surface Processes and Landforms, 2021-11-03)We investigated four subaerial (paleo)lacustrine landforms at the north‐eastern shoreline of Schweriner See, north‐eastern Germany. These included two beach ridges, one subaerial nearshore bar and a silting up sequence ... -
Glazialgeologie der Kärntner Karawanken
(Schweizerbart, Stuttgart, 1941)Die Arbeit setzt die glazialgeologischen Untersuchungen des Authors in den Karnischen Alpen fort, vorgenommen in den Karawanken in den Jahren 1932 und 1933. -
Neue geologische Beobachtungen bei Stadtilm
(Beiträge zur Geologie von Thüringen, 1944)Feinstratigraphische, tektonische und allgemein-geologische Beobachtungen werden mitgeteilt. Im Röt lassen sich noch nicht alle charakteristischen Horizonte von Ostthüringen nachweisen. Im unteren Muschelkalk wurde eine ... -
Ergebnisse geologischer Forschungen in Minas Geraes (Brasilien)
(Schweizerbart, Stuttgart, 1932)Minas Geraes gehört seit alten Zeiten zu den Gegenden der Erde, die wegen ihres Mineralreichtums allgemein berühmt waren. Weitaus die größte Zahl der Veröffentlichungen über dieses Land beschäftigt sich mit den Bodenschätzen, ... -
Sensitivity of Water Balance in the Qaidam Basin to the Mid‐Pliocene Climate
(Journal of Geophysical Research: Atmospheres, 2021-08-11)The Qaidam Basin (QB) in the northeastern Tibetan Plateau held a megalake system during the Pliocene. Today, the lower elevations in the basin are hyperarid. To understand to what extent the climate plays a role in the ... -
Distribution of Temperature and Strength in the Central Andean Lithosphere and Its Relationship to Seismicity and Active Deformation
(Journal of Geophysical Research: Solid Earth, 2021-05-11)We present three‐dimensional (3D) models of the present‐day steady‐state conductive thermal field and strength distribution in the lithosphere beneath the Central Andes. Our primary objective was to investigate the influence ... -
Overcoming the Model‐Data‐Fit Problem in Porous Media: A Quantitative Method to Compare Invasion‐Percolation Models to High‐Resolution Data
(Water Resources Research, 2021-07-13)Invasion percolation (IP) models offer a computationally inexpensive way to simulate multiphase flow in porous media, but only very few studies have compared their results to actual laboratory experimental image data. One ... -
Controls on Asymmetric Rift Dynamics: Numerical Modeling of Strain Localization and Fault Evolution in the Kenya Rift
(Tectonics, 2021-05-10)Complex, time‐dependent, and asymmetric rift geometries are observed throughout the East African Rift System (EARS) and are well documented, for instance, in the Kenya Rift. To unravel asymmetric rifting processes in this ... -
A ∼12 Myr Miocene Record of East Asian Monsoon Variability From the South China Sea
(Paleoceanography and Paleoclimatology, 2021-07-01)The long‐term evolution of the East Asian Monsoon and the processes controlling its variability under changing climate boundary conditions remain enigmatic. Here, we integrate new and published high‐resolution planktic and ... -
Torn Between Two Plates: Exhumation of the Cer Massif (Internal Dinarides) as a Far‐Field Effect of Carpathian Slab Rollback Inferred From 40Ar/39Ar Dating and Cross Section Balancing
(Tectonics, 2021-06-07)Extension across the southern Pannonian Basin and the internal Dinarides is characterized by Oligo‐Miocene metamorphic core complexes (MCCs) exhumed along mylonitic low‐angle extensional shear zones. Cer MCC at the transition ... -
Quantifying Tectonic and Glacial Controls on Topography in the Patagonian Andes (46.5°S) From Integrated Thermochronometry and Thermo‐Kinematic Modeling
(Journal of Geophysical Research: Earth Surface, 2021-07-28)The Patagonian Andes have been used to illustrate the dependency of major topographic changes in response to glacial erosion processes dominating over tectonic deformation and uplift. Here, we investigate tectonic and ... -
Topographic and Geologic Controls on Frost Cracking in Alpine Rockwalls
(Journal of Geophysical Research: Earth Surface, 2021-06-14)Frost weathering is a major control on rockwall erosion in Alpine environments. Previous frost cracking model approaches used air temperatures as a proxy for rock temperatures to drive frost weathering simulations on ... -
The Evolution of Central Volcanoes in Ultraslow Rift Systems: Constraints From D. João de Castro Seamount, Azores
(Tectonics, 2021-06-29)The Dom João de Castro seamount in the Hirondelle Basin (Azores) is a central volcano on the ultraslow diverging Terceira Rift axis. The combination of structural and geochemical data provides insights into the evolution ... -
LakeCC: a tool for efficiently identifying lake basins with application to palaeogeographic reconstructions of North America
(Journal of Quaternary Science, 2019)Along the margins of continental ice sheets, lakes formed in isostatically depressed basins during glacial retreat. Their shorelines and extent are sensitive to the ice margin and the glacial history of the region. Proglacial ... -
Diagnostic criteria using microfacies for calcareous contourites, turbidites and pelagites in the Eocene–Miocene slope succession, southern Cyprus
(Sedimentology, 2020)Interbedded contourites, turbidites and pelagites are commonplace in many deep-water slope environments. However, the distinction between these different facies remains a source of controversy. This detailed study of ... -
Bayesian geomorphology
(Earth Surface Processes and Landforms, 2020)The rapidly growing amount and diversity of data are confronting us more than ever with the need to make informed predictions under uncertainty. The adverse impacts of climate change and natural hazards also motivate our ... -
An Exhumation Pulse From the Nascent Franciscan Subduction Zone (California, USA)
(Tectonics, 2020)We investigated a suite of metabasite blocks from serpentinite matrix and shale matrix mélanges of the California Coast Ranges. Our new data set consists of 40Ar/39Ar dates of amphibole and phengite and U-Pb dates of ...