Browsing Geologie by Title
Now showing items 493-512 of 931
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Late Miocene Exhumation of the Western Cordillera, Ecuador, Driven by Increased Coupling Between the Subducting Carnegie Ridge and the South American Continent
; ; ; ; ; ; (Tectonics, 2023-01-12)
The subduction of bathymetric highs, such as aseismic ridges, leads to far‐reaching changes in the dynamics of subduction zones with increased plate coupling and deformation in the upper plate. Subduction of the submarine ... -
Late Oligocene—Early Miocene shortening in the Thrace Basin, northern Aegean
; ; (International Journal of Earth Sciences, 2021-05-15)
Late Cenozoic was a period of large-scale extension in the Aegean. The extension is mainly recorded in the metamorphic core complexes with little data from the sedimentary sequences. The exception is the Thrace Basin in ... -
Late Palaeozoic red beds elucidate fluvial architectures preserving large woody debris in the seasonal tropics of central Pangaea
; Gaitzsch, Birgit; ; Ehling, Bodo-Carlo; Kleeberg, Reinhard; (Sedimentology, 2020)
Fluvial red beds containing anatomically preserved large woody debris shed new light on seasonally dry biomes of the Pennsylvanian–Permian transition and elucidate the concurrence of river depositional systems and vegetation. ... -
Late Pleistocene to Recent Deformation in the Thick‐Skinned Fold‐and‐Thrust Belt of Northwestern Argentina (Central Calchaquí Valley, 26°S)
; ; ; ; ; ; Aranda‐Viana, R. Germán; (Tectonics, 2020-12-29)
The thick‐skinned fold‐and‐thrust belt on the eastern flank of the Andean Plateau in northwestern Argentina (NWA) is a zone of active contractional deformation characterized by fault‐bounded mountain ranges with no systematic ... -
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, ... -
Late Quaternary environmental history of Taylor Valley, southern Victoria Land, Antarctica, reconstructed by a multidisciplinary study of lake sediments
(Univ. Köln, 2009)In the unglaciated areas of Antarctica, lake sediments act as archives of the regional environmental and climatic history. In most cases, the records are restricted to the Holocene. Amongst the few exceptions are lakes in ... -
Late-stage volcano geomorphic evolution of the Pleistocene San Francisco Mountain, Arizona (USA), based on high-resolution DEM analysis and 40Ar/39Ar chronology
(Bulletin of Volcanology, Vol. 72, Nr. 7, p. 833-846, 2010)The cone-building volcanic activity and subsequent erosion of San Francisco Mountain, AZ, USA, were studied by using high-resolution digital elevation model (DEM) analysis and new 40Ar/39Ar dating. By defining remnants or ... -
Lateglacial and Holocene environmental history of the central Kola region, northwestern Russia revealed by a sediment succession from Lake Imandra
Lenz, Matthias; Savelieva, Larisa; Frolova, Larisa; Cherezova, Anna;; Baumer, Marlene; Gromig, Raphael; Kostromina, Natalia; Nigmatullin, Niyaz; Kolka, Vasili; Wagner, Benrd; Fedorov, Grigory; (Boreas, 2020)
Bolshaya Imandra, the northern sub-basin of Lake Imandra, was investigated by a hydro-acoustic survey followed by sediment coring down to the acoustic basement. The sediment record was analysed by a combined physical, ... -
Lateglacial and Holocene wet--dry cycles in southern Patagonia: chronology, sedimentology and geochemistry of a lacustrine record from Laguna Potrok Aike, Argentina
; Corbella, Hugo; Fey, Michael; Janssen, Stephanie; ; Mayr, Christoph; Ohlendorf, Christian; Schäbitz, Frank; Schleser, Gerhard H.; Wille, Michael; Wulf, Sabine; (The Holocene, 2007)
A high-resolution multiproxy geochemical approach was applied to the sediments of Laguna Potrok Aike in an attempt to reconstruct moist and dry periods during the past 16 000 years in southeastern Patagonia. The age–depth ... -
Lattice preferred orientation as an indicator of a complex deformation history of rocks
(Textures and microstructures, 1999)The deconvolution of the deformation history of rocks is one of the main goals of texture analysis in geology. The frequent observation that the macroscopic structures are obliquely oriented with respect to the margins of ... -
Lattice-preferred orientations of late-Variscan granitoids derived from neutron diffraction data: implications for magma emplacement mechanisms
Müller, Axel;; Ullemeyer, Klaus; Breiter, Karel (International Journal of Earth Sciences, 2010)
The lattice-preferred orientation (LPOs) of two late-Variscan granitoids, the Meissen monzonite and the Podlesí dyke granite, were determined from high-resolution time-of-flight neutron diffraction patterns gained at the ... -
Lebend- und Totengemeinschaften von Süßwassermollusken des Tegeler Sees - ein Beitrag zur Beurteilung seines ökologischen Zustandes
Werner, Ute; (25 Jahre Paläontologie FU Berlin, 1989)
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Lias-Fossilien aus der Tongrube Eichenberg, Nordhessen
; Persoh, D.; Reimer, A.; ; Sosnitza, M. (Fossilien, 2000)
Fossilreiche Aufschlüsse im Lias des Leinetalgrabens sind eine Seltenheit. Eine Ausnahme hiervon bildet die Tongrube bei Eichenberg an der Grenze von Nordhessen zu Niedersachsen, welche etwa 20 m Ton- und Mergelschiefer ... -
Lifetime and fluorescence quantum yield of uranium(VI) species in hydrolyzed solutions
Meinrath, Günther; Lis, Stefan; Stryla, Zdzislaw; (Journal of Alloys and Compounds, 2000)
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Limnological response to the Laacher See eruption (LSE) in an annually laminated Allerød sediment sequence from the Nahe palaeolake, northern Germany
;; ; (Boreas, 2020)
This paper presents evidence for a limnological response to the Laacher See eruption (LSE) as detected in lake sediments from Nahe, northern Germany. The sediment section of the Allerød period dating to between 13 422 and ... -
Linking gas and particle ejection dynamics to boundary conditions in scaled shock-tube experiments
; ; ; (Bulletin of Volcanology, 2021-07-20)
Predicting the onset, style and duration of explosive volcanic eruptions remains a great challenge. While the fundamental underlying processes are thought to be known, a clear correlation between eruptive features observable ... -
Linking uplift, erosion, and sedimentation using landscape evolution models: Madagascar since the Late Cretaceous
; ; ; ; (Earth Surface Processes and Landforms, 2022-10-05)
We present a study to estimate the large‐scale landscape history of a continental margin, by establishing a source‐to‐sink volume balance between the eroding onshore areas and the offshore basins. Assuming erosion as the ... -
Lithospheric deformations in Central Asia, derived from gravity data
(Univ. Hamburg, 2004)Central Asia is characterized by a number of spectacular tectonic units such as the Tibetan Plateau, the Tien Shan intra-continental mountain belt and the Altyn Tagh strike-slip fault. Deformation of the lithosphere of ... -
Local radon flux maxima in the quaternary sediments of Schleswig–Holstein (Germany)
; ; ; ; (International Journal of Earth Sciences, 2021-04-23)
This paper presents radon flux profiles from four regions in Schleswig–Holstein (Northern Germany). Three of these regions are located over deep-rooted tectonic faults or salt diapirs and one is in an area without any ... -
Local stresses, dyke arrest and surface deformation in volcanic edifices and rift zones
(ANNALS OF GEOPHYSICS, 2004)Field studies indicate that nearly all eruptions in volcanic edifices and rift zones are supplied with magma through fractures (dykes) that are opened by magmatic overpressure. While (inferred) dyke injections are frequent ...
