ALBERT

All Library Books, journals and Electronic Records Telegrafenberg

Your email was sent successfully. Check your inbox.

An error occurred while sending the email. Please try again.

Proceed reservation?

Export
  • 1
    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
    Type: doc-type:article
    Location Call Number Expected Availability
    BibTip Others were also interested in ...
  • 2
    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
    Type: doc-type:article
    Location Call Number Expected Availability
    BibTip Others were also interested in ...
  • 3
    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
    Type: doc-type:article
    Location Call Number Expected Availability
    BibTip Others were also interested in ...
  • 4
    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
    Type: doc-type:article
    Location Call Number Expected Availability
    BibTip Others were also interested in ...
  • 5
    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
    Type: doc-type:article , publishedVersion
    Location Call Number Expected Availability
    BibTip Others were also interested in ...
  • 6
    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
    Location Call Number Expected Availability
    BibTip Others were also interested in ...
  • 7
    Publication Date: 2022-10-28
    Description: Weit verbreitete geringmächtige distale Aschenfalltuffe, die in komplex aufgebauten fluvio-lakustrinen Abfolgen des karbonisch-permischen Saar-Nahe-Beckens in Süd Westdeutschland zwischengelagert sind, liefern wichtige tephrostratigraphische Leithorizonte für Korrelationen. In der Meisenheim- Formation der mittleren Glan-Gruppe lagerten sich die vulkanischen Aschen in drei unterschiedlichen Sedimentationsbereichen ab: im offen-lakustrinen Milieu, im Prodelta- bis Deltafrontbereich sowie auf der Deltaebene. Dabei wurde die Erhaltung, die laterale Verbreitung, das Erscheinungsbild und die mineralogische Zusammensetzung der vulkanischen Aschenlagen nicht nur durch das Ablagerungsmilieu, sondern auch durch das tektonische Umfeld beeinflusst. Zudem zeigen laterale Mächtigkeitsänderungen siliziklastischer Abfolgen zwischen Tuffhorizonten Versatzbeträge an synsedimentären Störungen an. Auf angehobenen Liegendschollen bzw. Horststrukturen ist das rezente Auftreten geringmächtiger tephrostratigraphischer Leithorizonte häufig unterbrochen, wohingegen mächtigere Horizonte, die sich oft aus mehreren Aschenlagen aufbauen, meist eine durchgehende Verbreitung haben, wobei aber ihre Mächtigkeiten und Texturen variieren. Abgesenkte Hangendschollen bzw. Grabenstrukturen lieferten im Allgemeinen ein erhöhtes Erhaltungspotenzial erstens für primäre Aschenlagen, die heute noch ursprüngliche Texturen wie planare Schichtung und normale Korngrößengradierung zeigen, sowie zweitens für sekundäre Akkumulationen von Aschentuffiten und tuffitischen Turbiditen, in denen Texturen wie normale Korngrößengradierung, Rippeischrägschichtung und basale Belastungsmarken auftreten. Im Gegensatz dazu wurden Aschenablagerungen auf angehobenen Liegendschollen teilweise aufgearbeitet oder vollständig erodiert. Hier sind primäre Aschenlagen häufig nur mit reduzierter Mächtigkeit erhalten und zeigen Erosionsmarken. Andere Leithorizonte beinhalten resedimentierte tuffitische Ablagerungen mit einer hohen detritischen Beimengung. Lokal haben solche sekundären Ablagerungen die Gesamtmächtigkeit von tephrostratigraphischen Leithorizonten deutlich erhöht. Auf Hangendschollen wurden in primären Aschenlagen meist vollständige Assoziationen primär-magmatischer Schwerminerale mit allgemein idiomorphem Habitus und nur geringer Kantenrundung an Kristallen erhalten. Die Schwermineralzusammensetzung besteht hauptsächlich aus Zirkon, Biotit, Apatit und Monazit sowie geringen Anteilen von Titanit und Hornblende. Daneben finden sich in primären Fallablagerungen auch geringe Gehalte von teilweise idiomorphem Turmalin, Granat und Rutil. Diese Komponenten werden als primäre magmatische Bildungen eingestuft. In tuffitischen Turbiditen oder Aschentuffiten treten neben teils gerundeten primären Schwermineralen auch geringe Gehalte von detritischen Komponenten wie gerundete Epidote auf. Im Gegensatz dazu finden sich auf angehobenen Liegendschollen aufgrund von Aufarbeitungsprozessen normalerweise nur geringe Anteile von primären Schwermineralen mit xenomorphem, unregelmäßigem Habitus und teilweise hohem Kornrundungsgrad. Hier sind häufig detritische Komponenten wie gut gerundete Epidote und Gesteinsbruchstücke in die Aschen eingemischt. Die tephrostratigraphischen Leithorizonte in der fluvio-lakustrinen Meisenheim-Formation des Saar-Nahe-Beckens liefern ein gutes Beispiel für das Zusammenwirken von vulkanischen, sedimentären und tektonischen Prozessen bei der Ablagerung distaler vulkanischer Aschen.
    Description: Abstract: "Synsedimentary tectonic influence on occurrence, appearance, and petrography of distal ash tuffs in the Saar-Nahe Basin (SW-Germany)". Thin, but laterally widespread distal fallout ash tuff layers interbedded within complex fluvio- lacustrine successions of the Carboniferous-Permian Saar-Nahe Basin in SWGermany (Fig. 1) provide important tephrostratigraphic markers for correlations. The former volcanic ash layers of the Meisenheim Formation in the middle part of the Glan Group (Fig. 2) were deposited within three sub-environments: in an offshore lacustrine, prodelta to delta front and delta plain setting (Fig. 3). At this, the preservation, lateral distribution, appearance, and mineralogical composition of volcanic ash beds were not only influenced by the depositional environment but also by the tectonic setting. Furthermore, lateral thickness variations of sedimentary successions between specific tuff horizons indicate offset magnitudes at synsedimentary faults. The present occurrence of thin tephrostratigraphic markers is frequently interrupted on uplifted footwall blocks or hörst structures, whereas thicker markers which are frequently composed of several ash layers offen show an almost continuous distribution (Figs. 4 and 5) although their thickness and textures vary laterally. Subsided hanging-wall blocks or graben structures generally provided an enhanced preservation potential for (1) primary ash fall layers with original textures like planar bedding and normal grain-size grading, and (2) secondary accumulations of ash tuffites and tuffaceous turbidites showing textures like normal grain-size grading, ripple-cross bedding, and basal load marks (Tab. 1). In contrast, on elevated footwall blocks ash deposits were partly reworked or even entirely eroded (Fig. 6). Here, primary ash layers are offen preserved with reduced thicknesses only and show erosion marks. Other tuff horizons frequently comprise redeposited tuffaceous deposits with a high detrital contamination. Locally these secondary deposits have considerably increased the total thickness of a tephrostratigraphic marker. On subsided hanging-wall blocks, in primary ash beds frequently complete suites of primary magmatic heavy minerals with usually euhedral habitus and only minor rounding at crystal edges were preserved. This heavy mineral suite comprises mainly zircon, biotite, apatite, and monazite as well as minor contents of sphene and hornblende. In addition, in primary fall deposits also lower contents of partly euhedral tourmaline, garnet, and rutile occur (Plate 1). These components are classified as primary magmatically formed. Within tuffaceous turbidites or ash tuffites, occasionally rounded primary heavy minerals occur besides minor contents of detrital components as e.g. rounded epidotes. In contrast, on elevated footwall blocks usually only minor contents of primary heavy minerals with an anhedral, irregulär habitus and partly high degrees of grain roundness due to reworking occur (Tab. 2). Frequently, detrital components like well-rounded epidotes and rock fragments were admixed into the ash. The tephrostratigraphic marker horizons in the fluvio-lacustrine Meisenheim Formation of the Saar-Nahe Basin deliver a good example for the interaction of volcanological, sedimentary, and tectonic processes during the deposition of distal volcanic ashes.
    Description: research
    Keywords: ddc:554.3
    Language: German
    Type: doc-type:article , publishedVersion
    Location Call Number Expected Availability
    BibTip Others were also interested in ...
  • 8
    Publication Date: 2022-10-19
    Description: Die Konglomeratische Serie, das regionale Äquivalent der Solling- Folge (s6), greift in der westlichen Südeifel erosionsdiskordant auf den devonischen Sockel über. In dieser Beckenausweitung nach Westen zeigt sich eine Drehung der strukturell vorgegebenen Absenkungsachse aus der „diagonalen“ Südwest-Nordostin die „variszische“ WSW-ENE-Richtung. Dies geschah im Zuge des beckenweiten Bewegungsaktes der „H-Diskordanz“. Die Materialanlieferung erfolgte von einem galloardennischen Liefergebiet im Westen. Die Einstufung der Solling-Konglomerate als vom tieferen „sm“ abgetrennter „Oberer Buntsandstein“ („soc“) kann lediglich im Sinne einer „nach-H-Diskordanz-Bildung” gelten. Nach der bundesweiten Buntsandstein- Stratigraphie zählen sie noch zum Mittleren Buntsandstein. Die Konglomeratische Serie, früher als „Usch-Schichten“ in die untersten Zwischenschichten gestellt, entspricht altersmäßig dem saarländisch-lothringischen Hauptkonglomerat. Die Violette Grenzzone liegt darüber. Mit den Violettschichten, einer faziell ähnlich ausgebildeten Abfolge unter den Konglomeraten, verbindet sie lediglich eine lithogenetische Äquivalenz, nicht aber die stratigraphische Signifikanz für die Grenze Mittlerer/Oberer Buntsandstein. Die Kernbohrungen Roth und Körperich erbrachten mehrere Zehner Meter fluviatile, zyklisch gegliederte quarzitreiche Geröllsandsteine und Konglomerate, teilweise mit hohen Dolomitgehalten im Bindemittel. Sie lagern über Devon und über Erosionsresten vom Basiskonglomerat des Mittleren Buntsandstein. Die beiden Bohrprofile zeigen eine fazielle Differenzierung durch die dazwischen liegende, alt angelegte Oesling- Randflexur. Eine tektonische Kontrolle des Sedimentationsgeschehens wird deutlich.
    Description: Abstract: The coarse sediments of the „Konglomeratische Serie“ are a local equivalent of the Solling-Folge (s6) in upper Germanic Middle Buntsandstein (Lower Triassic). In the western part of the Southern Eifel these conglomerates lap on the Devonian basement. The lateral extension of the deposition area („H-discordance“) was structurally controlled. Caused by tectonic movements the direction of the basin axis rotated from SW-NE to WSW-ENE. The conglomerates do not represent a coarse base unit of the Upper Buntsandstein but correspond to the saarland-lorrainian Hauptkonglomerat. They were delivered from a western source area. The Violette Grenzzone, a famous stratigraphic marker, lies at the top. In contrast to this the facially similar Violettschichten are located below the conglomerates. The core borings Roth and Körperich yielded several ten-meters of coarse sandstones and conglomerates, showing different types of fluvial cyclothems. Correlation was difficult because the sedimentation was controlled by an old flexure zone along the southern margin of the ardennic massif („Oesling-Randflexur“). Synsedimentary tectonic movements determined the position of the fluvial streams.
    Description: 1. Einführung 2. Buntsandstein-Stratigraphie der Trierer Bucht im Überblick 3. Geographische und geologische Position der Bohrpunkte 4. Lithostratigraphie der Kernprofile Roth und Körperich 4.1. Bohrung Roth 4.2. Bohrung Körperich 5. Zusammenfassende Darlegung der Bohr- und Kartierbefunde in der Region Vianden–Roth–Körperich 6. Der „soc“: Mittlerer oder Oberer Buntsandstein? 7. Erste Hinweise zur Beckenkonfiguration der Solling-Folge in der Trierer Bucht 8. Ausblick Schriften
    Description: research
    Keywords: ddc:554.3
    Language: German
    Type: doc-type:article , publishedVersion
    Location Call Number Expected Availability
    BibTip Others were also interested in ...
  • 9
    facet.materialart.
    Unknown
    Publication Date: 2022-08-15
    Description: Ausgehend von lithologischen und geröllkundlichen Beobachtungen an zahlreichen Kies- und Tongruben des Westerwaldes und des westlichen Hintertaunus wird der fluviatile Teil der oligozänen Arenberg-Formation unter Gesichtspunkten der Flussarchitektur und Paläogeographie beschrieben. An Hand der Kies-/Sand-/Schluff-Ton-Verteilung lassen sich drei unterschiedliche Faziesbereiche unterscheiden. Einem nördlichen Randbereich, in dem Tone und Schluffe dominieren und Kiese überwiegend lokaler Herkunft stark zurücktreten, steht ein zentraler Bereich gegenüber, in dem Kies, Sand und Schluff in einem ausgewogenen Verhältnis stehen. Die unterschiedlichen Kiesgerölle zeigen einen Ferntransport aus nordöstlicher Richtung (Mitteldevon und Unterkarbon der Lahn-Dill-Mulde) und aus südlicher Richtung (Unterdevon des Taunuskamms) an. Der breite Überlappungsbereich der Geröllarten deutet auf eine intensive fluviatile Mischung der Geröllströme im zentralen Teil des Transportweges. Ein südlicher marginaler Randbereich mit Verlandungssedimenten deutet sich an. Der mögliche Verlauf des Arenberg-Flusses ist entlang des unteren Mittelrheins erst dort zu belegen, wo im südlichen Teil der Niederrheinischen Bucht im untersten Teil der oligo-miozänen Köln-Formation von Quarzgeröllen dominierte, mit wenigen Quarzit- und Kieselschiefergeröllen vermischte Kiessande die Spur einen breit angelegten paläogenen Entwässerungsweg des östlichen Rheinischen Schiefergebirges dokumentieren. Als Auslöser des fluviatilen sedimentären Geschehens ist die spätoligozänzeitliche Hebung und Abtragung des kreide- und alttertärzeitlichen Saproliths auf den Gesteinen des paläozoischen Untergrunds anzusehen. Im Zug dieses Geschehens wurden zuvor transgressiv eingetragene marine oligozäne Sedimente abgetragen und deren Foraminiferen den Schluffen und Sanden der Arenberg-Formation beigemengt.
    Description: Abstract: Based on lithological investigation carried out at several gravel and clay pits of the Westerwald and the western Hintertaunus the fluviatile part of the Oligocene Arenberg Formation is described under aspects of palaeogeography and fluvial architecture. By means of the regional ratio of gravel, sand, silt and clay two fluvial facies can be differentiated. A northern marginal facies in which clay and silt dominate and gravel of predominantly regional provenance is faced by a central facies in which gravel, sand and silt are in balanced proportions. The different types of gravel components point to a remote fluvial transport from northeastern directions (Middle Devonian and Lower Carboniferous of the Lahn-Dill Syncline) and from southern directions (Lower Devonian of the Taunus Ridge). The broad overlap area of pebble types points to an intense fluviatile mixing of pebbles in the central part of the transport path. A southern marginal facies with evidence of drying up becomes apparent. The possible pathway of the Arenberg river along the Lower Middle Rhine cannot be certainly allocated before its entrance into the southernmost part of the Lower Rhine Embayment. There the lowermost part of the Köln Formation consisting of quartz dominated gravels with small amounts of quartzite and chert pebbles documents the trace of a broad Oligocene drainage system of the eastern Rhenish Massive. The Late Oligocene uplift and the associated denudation of the Cretaceous to early Tertiary saprolite lying upon the rocks of the Palaeozoic sub-surface are considered to be the trigger of the fluviatile sedimentary development. During this time, Oligocene sediments introduced by marine transgression before, were eroded and their foraminifera admixed to the silts and sands of the Arenberg Formation.
    Description: research
    Keywords: ddc:554.3 ; ddc:551.354
    Language: German
    Type: doc-type:article , publishedVersion
    Location Call Number Expected Availability
    BibTip Others were also interested in ...
  • 10
    facet.materialart.
    Unknown
    Deutsche Gesellschaft für Erdbebeningenieurwesen und Baudynamik (DGEB) e.V. | Kiel
    Publication Date: 2022-07-13
    Description: This publication developed from the 5th International Colloquium on “Historical Earthquakes, Paleoseismology, Neotectonics and Seismic Hazard” which was held from 11 to 13 October 2017 at the Federal Institute for Geosciences and Natural Resources (BGR) in Hannover, Germany. In this colloquium, 75 experts from 17 countries presented and discussed recent results, ongoing studies and planned projects on the topics historical earthquakes, macroseismology, archeoseismology, paleoseismology, earthquake catalogues and databases, active faults, seismotectonics, neotectonics, and seismic hazard assessment.
    Description: Deutsche Gesellschaft für Erdbebeningenieurwesen und Baudynamik
    Description: 〈b〉Introduction: Historical Earthquakes, Paleoseismology, Neotectonics and Seismic Hazard: New Insights and Suggested Procedures〈/b〉 〈br〉 〈i〉Diethelm Kaiser〈/i〉 〈br〉 〈a href="https://doi.org/10.23689/fidgeo-3868"〉 DOI: https://doi.org/10.23689/fidgeo-3868〈/a〉〈br〉 〈br〉〈/br〉 〈b〉Best practice of macroseismic intensity assessment applied to the earthquake catalogue of southwestern Germany〈/b〉 〈br〉 〈i〉 Wolfgang Brüstle, Uwe Braumann, Silke Hock and Fee-Alexandra Rodler 〈/i〉〈br〉 〈a href="https://doi.org/10.23689/fidgeo-3864"〉 DOI:https://doi.org/10.23689/fidgeo-3864〈/a〉〈br〉 〈br〉〈/br〉 〈b〉The earthquake of September 3, 1770 near Alfhausen (Lower Saxony, Germany): a real, doubtful, or a fake event? 〈/b〉 〈br〉 〈i〉Günter Leydecker and Klaus Lehmann 〈/i〉 〈br〉〈a href="https://doi.org/10.23689/fidgeo-3865"〉 DOI: https://doi.org/10.23689/fidgeo-3865〈/a〉〈br〉 〈br〉〈/br〉 〈b〉How well does known seismicity between the Lower Rhine Graben and southern North Sea reflect future earthquake activity? 〈/b〉 〈br〉 〈i〉Thierry Camelbeeck, Kris Vanneste, Koen Verbeeck, David Garcia-Moreno, Koen Van Noten and Thomas Lecocq 〈/i〉 〈br〉〈a href="https://doi.org/10.23689/fidgeo-3866"〉 DOI: https://doi.org/10.23689/fidgeo-3866〈/a〉〈br〉 〈br〉〈/br〉 〈b〉The Paleoseismic Database of Germany and Adjacent Regions PalSeisDB v1.0〈/b〉〈br〉 〈i〉Jochen Hürtgen, Klaus Reicherter, Thomas Spies, Claudia Geisler and Jörg Schlittenhardt 〈/i〉 〈br〉〈a href="https://doi.org/10.23689/fidgeo-3867"〉 DOI: https://doi.org/10.23689/fidgeo-3867〈/a〉〈br〉
    Description: research
    Keywords: ddc:551.22 ; ddc:554.3 ; ddc:550
    Language: English
    Type: doc-type:book
    Format: 135
    Location Call Number Expected Availability
    BibTip Others were also interested in ...
Close ⊗
This website uses cookies and the analysis tool Matomo. More information can be found here...