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  • Other Sources  (13)
  • CITATION GEO-LEO  (13)
  • Articles (OceanRep)
  • ddc:554.3  (13)
  • 2020-2023  (9)
  • 1955-1959
  • 1950-1954
  • 1935-1939  (4)
  • 1
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    Eemian landscape response to climatic shifts and evidence for northerly Neanderthal occupation at a palaeolake margin in northern Germany (2021)
    Details
    Publication Date: 2022-03-30
    Description: The prevailing view suggests that the Eemian interglacial on the European Plain was characterized by largely negligible geomorphic activity beyond the coastal areas. However, systematic geomorphological studies are sparse. Here we present a detailed reconstruction of Eemian to Early Weichselian landscape evolution in the vicinity of a small fingerlake on the northern margin of the Salzwedel Palaeolake in Lower Saxony (Germany). We apply a combination of seismics, sediment coring, pollen analysis and luminescence dating on a complex sequence of colluvial, paludal and lacustrine sediments. Results suggest two pronounced phases of geomorphic activity, directly before the onset and at the end of the Eemian period, with an intermediate period of pronounced landscape stability. The dynamic phases were largely driven by incomplete vegetation cover, but likely accentuated by fluvial incision in the neighbouring Elbe Valley. Furthermore, we discovered Neanderthal occupation at the lakeshore during Eemian pollen zone (PZ) E IV, which is chronologically in line with other known Eemian sites of central Europe. Our highly‐resolved spatio‐temporal data substantially contribute to the understanding of climate‐induced geomorphic processes throughout and directly after the last interglacial period. It helps unraveling the landscape dynamics between the coastal areas to the north and the loess belt to the south.
    Description: Two phases of channel incision at the Saalian‐Eemian transition and in the late Eemian. Incisions closely followed by rising water tables. Long‐lasting phase of geomorphic stability in the mid‐Eemian, characterized by: very dense forest cover. the formation of a fingerlake within the paleochannel with gradually sinking water table. no influx of clastic sediments, but deposition of peat and lake‐marl deposits.
    Description: Max‐Planck‐Gesellschaft http://dx.doi.org/10.13039/501100004189
    Keywords: ddc:554.3 ; ddc:551
    Language: English
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  • 2
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    Sedimentological and carbonate isotope signatures to identify fluvial processes and catchment changes in a supposed impact ejecta‐dammed lake (Miocene, Germany) (2021)
    Details
    Publication Date: 2022-03-25
    Description: The identification and distinction of fluvial from lacustrine deposits and the recognition of catchment changes are crucial for the reconstruction of climate changes in terrestrial environments. The investigated drill core succession shows a general evolution from red–brown claystones to white–grey marlstones and microcrystalline limestones, which all have previously been considered as relict deposits of an impact ejecta‐dammed lake, falling within the mid‐Miocene Climate Transition. However, recent mammal biostratigraphic dating suggests a likely pre‐impact age. Indeed, no pebbles from impact ejecta have been detected; only local clasts of Mesozoic formations, in addition to rare Palaeozoic lydites from outside of the study area. Lithofacies analysis demonstrates only the absence of lacustrine criteria, except for one charophyte‐bearing mudstone. Instead, the succession is characterized by less diagnostic floodplain fines with palaeosols, palustrine limestones with root voids and intercalated thin sandstone beds. Carbonate isotope signatures of the mottled marlstones, palustrine limestones and mud‐supported conglomerates substantiate the interpretation of a fluvial setting. Low, invariant δ18Ocarb reflects a short water residence time and highly variable δ13Ccarb indicates a variable degree of pedogenesis. Carbonate 87Sr/86Sr ratios of the entire succession show a unidirectional trend from 0.7103 to 0.7112, indicating a change of the solute provenance from Triassic to Jurassic rocks, identical to the provenance trend from extraclasts. The increase in carbonate along the succession is therefore independent from climate changes but reflects a base‐level rise from the level of the siliciclastic Upper Triassic to the carbonate‐bearing Lower to Middle Jurassic bedrocks. This study demonstrates that, when information on sedimentary architecture is limited, a combination of facies criteria (i.e. presence or absence of specific sedimentary structures and diagnostic organisms), component provenance, and stable and radiogenic isotopes is required to unequivocally distinguish between lacustrine and fluvial sediments, and to disentangle regional geological effects in the catchment and climate influences.
    Description: China Scholarship Council http://dx.doi.org/10.13039/501100003398
    Description: Deutsche Forschungsgemeinschaft http://dx.doi.org/10.13039/501100001659
    Keywords: ddc:552.5 ; ddc:554.3
    Language: English
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  • 3
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    Impact of Late Cretaceous inversion and Cenozoic extension on salt structure growth in the Baltic sector of the North German Basin (2021)
    Details
    Publication Date: 2022-03-24
    Description: 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 from the base Zechstein to the seafloor, we investigate the nature and impact of these inversion events on Zechstein salt structures in the Baltic sector of the North German Basin. These insights improve the understanding of salt structure evolution in the region and are of interest for any type of subsurface usage. We link stratigraphic interpretation to previous studies and nearby wells and present key seismic depth sections and thickness maps with a new stratigraphic subdivision for the Upper Cretaceous and Cenozoic covering the eastern Glückstadt Graben and the Bays of Kiel and Mecklenburg. Time‐depth conversion is based on velocity information derived from refraction travel‐time tomography. Our results show that minor salt movement in the eastern Glückstadt Graben and in the Bay of Mecklenburg started contemporaneous with Late Cretaceous inversion in the Coniacian‐Santonian. Minor salt movement continued until the end of the Late Cretaceous. Overlying upper Paleocene and lower Eocene deposits show constant thickness without indications for salt movement suggesting a phase of tectonic quiescence from the late Paleocene to middle Eocene. In the late Eocene to Oligocene, major salt movement recommenced in the eastern Glückstadt Graben. In the Bays of Kiel and Mecklenburg, late Neogene uplift removed much of the Eocene‐Miocene succession. Preserved deposits indicate major post‐middle Eocene salt movement, which likely occurred coeval with the revived activity in the Glückstadt Graben. Cenozoic salt structure growth critically exceeded salt flow during Late Cretaceous inversion. Cenozoic salt movement could have been triggered by Alpine/Pyrenean‐controlled thin‐skinned compression, but is more likely controlled by thin‐skinned extension, possibly related to the beginning development of the European Cenozoic Rift System.
    Description: In the Baltic sector of the North German Basin, minor salt movement started comremporaneous with Late Cretaceous inversion in the Coniacian‐Santonian and lasted until the end of the Late Cretaceous. A late Paleocene to middle Eocene phase of tectonic quiescense was followed by recommencing major salt movement in the Glückstadt Graben in the Late Eocene‐Oligocene. This Cenozoic phase of salt structure growth critically exceeded salt flow during the Late Cretaceous inversion and is likely controlled by thin‐skinned extension, possibly related to the beginning development of the European Cenozoic Rift System.
    Description: Deutsche Forschungsgemeinschaft http://dx.doi.org/10.13039/501100001659
    Keywords: ddc:551.8 ; ddc:554.3
    Language: English
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  • 4
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    Characterization of (paleo)lacustrine landforms using sedimentological and portable OSL investigations at Schweriner See, north‐eastern Germany (2021)
    Details
    Publication Date: 2022-03-22
    Description: 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 located close to a fossil cliff, which marks the former maximum extent of Schweriner See. We used luminescence profiling with a SUERC portable OSL device (POSL) on all four sediment sequences in combination with sedimentological investigations such as grain size, loss‐on‐ignition and magnetic susceptibility to provide information on the various formations in a lacustrine depositional environment. The POSL reader was used on pre‐treated polymineral samples to gain an insight into luminescence distribution within the individual sediment sequences, but also among the four sequences. POSL proved valuable to understand depositional processes, which were not visible in lithology or sedimentological parameters. With somewhat larger uncertainty this method provides relative chronologies of the sediment sequences. Additionally, we carried out radiocarbon dating and full optical stimulated luminescence (OSL) dating to establish a chronological framework. OSL ages proved to be more reliable to date beach ridges in this setting than radiocarbon samples, which were severely influenced by sediment reworking. This combined approach of sedimentological analyses, luminescence profiling and absolute age determinations revealed details in depositional processes at Schweriner See which otherwise would have remained undetected. Furthermore, it helped to set these subaerial (paleo)lacustrine landforms in a chronological framework.
    Description: Luminescence profiles were a tremendous help to a) identify additional breaks in sedimentological successions, b) interpret sediment structures in greater detail than it would have been possible from sedimentological and absolute age data (14C and OSL dating) alone and c) understand beach ridge formation at Schweriner See, where traditional sedimentological parameters showed no indications of depositional changes.
    Description: German Research Foundation (DFG) http://dx.doi.org/10.13039/501100001659
    Description: Ministry of Agriculture and the Environment of the Federal State of Mecklenburg‐Western Pomerania
    Description: University of Greifswald/Federal State Mecklenburg‐Western Pomerania: Graduate Scholarship (Landesgraduiertenstipendium) http://dx.doi.org/10.13039/501100018934
    Keywords: ddc:551.3 ; ddc:554.3
    Language: English
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  • 5
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    [Neue Nr. 6114] Wörrstadt / Geologische Karte (1935)
    Hessisches Landesamt für Bodenforschung, Wiesbaden
    In:  SUB Göttingen | KART B 104:6114
    Details
    Publication Date: 2023-02-14
    Description: Geologische Karte 1: 25 000. Digitalisat des FID GEO (Fachinformationsdienst Geowissenschaften der festen Erde), erstellt durch das GDZ (Göttinger Digitalisierungszentrum), Karte aus dem Bestand der SUB Göttingen. Koordinaten Vorlage: E 08 00 - 08 10 / N 049 48 - 049 54.
    Description: DFG, SUB Göttingen
    Description: map
    Description: DFG, SUB Göttingen
    Keywords: ddc:912 ; ddc:554.3 ; ddc:943.2 ; Geologische Karte ; Wörrstadt
    Language: German
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  • 6
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    [Neue Nr. 5718] Rodheim / Geologische Karte (1937)
    Hessisches Landesamt für Bodenforschung, Wiesbaden
    In:  SUB Göttingen | KART B 104:5718 | KART H 86:5718
    Details
    Publication Date: 2022-11-22
    Description: Geologische Karte 1: 25 000 mit Erläuterungen. Digitalisat des FID GEO (Fachinformationsdienst Geowissenschaften der festen Erde), erstellt durch das GDZ (Göttinger Digitalisierungszentrum), Karte aus dem Bestand der SUB Göttingen. GeoTIFF erstellt durch FID GEO, SUB Göttingen. Koordinaten Vorlage: E 008 40 - E 008 50 / N 050 18 - N 050 12
    Description: map
    Description: DFG, SUB Göttingen
    Keywords: ddc:912 ; ddc:554.3 ; Rodheim ; Geologische Karte
    Language: German
    Type: doc-type:carthographicMaterial
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  • 7
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    [Neue Nr. 5322] Lauterbach / Geologische Karte (1935)
    Staatsverlag, [Wiesbaden]
    In:  SUB Göttingen | KART B 104:5322 | KART H 86:5322
    Details
    Publication Date: 2022-11-22
    Description: Geologische Karte 1: 25 000 mit Erläuterungen. Digitalisat des FID GEO (Fachinformationsdienst Geowissenschaften der festen Erde), erstellt durch das GDZ (Göttinger Digitalisierungszentrum), Karte aus dem Bestand der SUB Göttingen.
    Description: DFG, SUB Göttingen
    Description: map
    Description: DFG, SUB Göttingen
    Keywords: ddc:912 ; ddc:943.2 ; ddc:554.3 ; Lauterbach ; Geologische Karte
    Language: German
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  • 8
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    [Neue Nr. 6118] Roßdorf / Geologische Karte (1938)
    Hessische Geologische Landesanstalt, Darmstadt
    In:  SUB Göttingen | KART B 104:6118 | KART H 86:6118
    Details
    Publication Date: 2022-11-22
    Description: Geologische Karte 1: 25 000 mit Erläuterungen. Digitalisat des FID GEO (Fachinformationsdienst Geowissenschaften), erstellt durch das GDZ (Göttinger Digitalisierungszentrum), Karte aus dem Bestand der SUB Göttingen.
    Description: map
    Description: DFG, SUB Göttingen
    Keywords: ddc:912 ; ddc:554.3 ; Roßdorf ; Geologische Karte
    Language: German
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    Format: 122
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  • 9
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    Marine Signale im höheren Buntsandstein der Trier-Luxemburger Bucht? (2020)
    Details
    Publication Date: 2022-07-15
    Description: Im linksrheinischen Mittleren und Oberen Buntsandstein werden Hoch- und Tiefstände des Baselevels rekonstruiert. Die jeweiligen Steuerungsfaktoren waren Meeresspiegel- Schwankungen und – vor allem – Tektonik, bei recht gleichbleibend (semi-)aridem Klima. In entsprechend begünstigten Zeitspannen konnten sogar weit landwärts gelegene Beckenbereiche kurzfristig seicht überflutet und intensiv karbonatisch-salinar beeinflusst werden. Violette Horizonte bzw. Grenzzonen entstanden. Vereinzelt erscheinen reliktisch erhaltene tidale Gefügemerkmale. Die im inneren Germanischen Becken entwickelten sequenzstratigraphischen Konzepte werden dargelegt, diskutiert und erweitert. Die Schichtenfolgen am Trier-Luxemburgischen Beckenrand und in der Pfalz werden diesbezüglich mit denen in rechtsrheinischen Gebieten (insbesondere mit der nordhessischen Kernbohrung Borken) verglichen. Es erweist sich eine komplexe Ereignisabfolge von tektonischen Pulsen und weiträumig wirksamen Meeresspiegel-Hochständen.
    Description: In the Middle and Upper Buntsandstein left of the river Rhine highstands and lowstands of the base-level are reconstructed. They were controlled by sealevel-fluctuations and – even more important – tectonics, whereas the climate kept quite constantly (semi-)arid. During favored periods of time even far landward positioned basin areas were subject to shallow marine floodings. They were intensely influenced by saline-carbonatic chemical conditions. So-called Violet Horizons resp. Violet Limit Zones generated. Tidal textural features have been preserved sporadically. Concepts of sequence stratigraphy, which have been evolved in the inner parts of the Germanic Basin are explained, discussed and expanded. Referring to that the lithostratigraphic columns of the Trier-Luxemburg basin margin and those of the Palatinate are compared with the successions on the right side of the river Rhine, especially with the core-profile Borken in northern Hesse. Finally a complex temporal succession of interacting tectonic pulses and far-reaching sealevel-highstands can be deduced.
    Description: Einführung in Teil IV 8. Zusammenfassende sequenzstratigraphische Ausdeutung 8.1 Grundlegende Fakten und Überlegungen 8.2 Die Violetten Grenzzonen als Abbild markanter transgressiver Ereignisse 8.3 Anhaltspunkte zur stratigraphischen „Einhängung“ (Korrelation) der regionalen Schichtenfolge 8.4 Die regionale Ereignisabfolge im Vergleich mit Ergebnissen aus östlicheren Gebieten 9. Abschließende sequenzstratigraphische Anmerkungen Schriften
    Description: research
    Keywords: ddc:554.3
    Language: German
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  • 10
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    Der paläogeographische Nord-Anschluss des marin beeinflussten höheren Buntsandsteins der Trier-Luxemburger Bucht (2021)
    Details
    Publication Date: 2022-07-15
    Description: Die Geologie der mittleren Eifeler Nord-Süd-Zone und der Mechernicher Trias-Senke mit ihren tektonischen Rahmenbedingungen, ihrer regionalen Buntsandstein-Stratigraphie und -Faziesverteilung wird dargestellt. Zum Vergleich und zur Ergänzung werden auch südniederländische Gegebenheiten herangezogen. Die schon vorliegenden Befunde aus der Trier-Luxemburger Bucht lassen sich dabei weitestgehend nachvollziehen und verifizieren. Dies betrifft den tektonostratigraphischen, von Bewegungsphasen und Diskordanzen geprägten Werdegang des regionalen Buntsandstein-Beckens und spezielle Merkmale der Lithofazies. Zeitabschnitte mit einer deutlichen ingressiven (retrogradierenden) Beckenerweiterung nach Süden hin sind auszumachen. Sie hinterließen Profilbereiche mit nicht-fluviatilen, peritidalen Gefügemerkmalen und mit Gesteinbestandteilen, die eine ehemals sehr hohe Salinität bezeugen. Diese Niveaus korrelieren mit bekannten marinen Episoden im höheren Buntsandstein des mitteleuropäischen Hauptbeckens. Nach Süden und Südwesten hin haben sich die temporären peritidal-salinaren Milieubedingungen bis in die Trier-Luxemburgische Beckenrandregion hinein durchsetzen können. Dies galt jeweils für die späten Buntsandstein-Folgen s5 und s6 und für den Röt (s7-1, s7-2 und s7-4).
    Description: The geology of the central Eifel Depression and the Mechernich Trias Low is exposed, especially its tectonical setting and the stratigraphy and lithofacies of the regional Buntsandstein. Moreover, the concerned conditions in the southern Netherlands are cited for supplements and comparisions. By this, the already existing results from the Trier-Luxemburg area can largely be verified. This concerns the tectonostratigraphic evolution of the regional Buntsandstein basin, characterized by vertical movement events and unconformities. Time spans with remarkable ingressive (retrogradational) basin expansions to the south can be ascertained. They caused successions with non-fluviatile peritidale textural features and with lithologies, which prove very high former salinities. These successions correlate to well-known marine episodes in the higher Buntsandstein of the middle-european main basin. To the south and southwest the temporary peritidal-saline conditions continued up to the Trier-Luxemburg marginal area. This happened in the late spans of the Buntsandstein Folgen s5 and s6 and during Röt (s7-1, s7-2, s7-4).
    Description: 1. Einführung 2. Buntsandstein-Stratigraphie in der Nordeifel 3. Tektonisch-strukturelle Gesichtspunkte 3.1 Die Subsidenz-kontrollierende Funktion alt-angelegter tektonischer Strukturen 3.2 Methodische Möglichkeiten und Grenzen der Beckenrekonstruktion im Norden 4. Buntsandstein in den Niederlanden 5. Der wechselnde Charakter der paläogeographischen Anbindung an das nördliche Hauptbecken 5.1 Zur Erhaltungsfähigkeit und Nachweisbarkeit mariner Faziesmerkmale 5.2 Zeitliche Abfolge der rekonstruierbaren Ablagerungsbedingungen 6. Ausblick Schriften
    Description: research
    Keywords: ddc:554.3
    Language: German
    Type: doc-type:article , publishedVersion
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