14 Works

High resolution 3D multicomponent seismic for a better structural, facial and process-oriented characterization of glacially overdeepened valleys in the Alps

Hermann Buness & Thomas Burschil
This project aimed at an improved seismic characterization of overdeepened Quaternary valleys and basins in formerly glaciated, mountainous areas using innovative seismic data acquisition, processing, and interpretation. We therefore carried out comprehensive seismic surveys in two overdeepened valleys, the 250 m deep Tannwald Basin (TB) in the Alpine foreland and the >600 m deep inneralpine Lienz Basin (LB). The surveys comprised multicomponent and 3-D seismic experiments using P- and S- waves. In both basins, we...

The compilation of the new Alpine gravity maps - from the work of the AlpArray Gravity Research Group

Pavol Zahorec , Juraj Papco , Roman Pasteka , Miroslav Bielik , Sylvain Bonvalot , Carla Braitenberg, Jörg Ebbing , Gerald Gabriel , Andrej Gosar , Adam Grand , Hans-Jürgen Götze & György Hetényi
The international networking initiative AlpArray Gravity Research Group (AAGRG) focused on the compiling homogeneous surface-based gravity datasets across the Alps and adjacent areas, on creating digital data sets for Bouguer and Free Air anomalies. In 2016/17 all ten countries around the Alps have agreed to contribute with point or gridded gravity data and data processing techniques to a recompilation of the Alpine gravity field in an area which is limited by 2° to 23° East...

Reconstruct sedimentation rate and time from downhole logging data at Lake Chalco, Central México

Mehrdad Sardar Abadi , Christian Zeeden & Thomas Wonik
Leibniz Institute for applied Geophysics, Germany(1);Understanding the evolution of lower latitude climate from the most recent glacial periods to post-glacial warmth in the continental tropical regions has been obstructed by a lack of continuous geological records. Here we present results from a lacustrine record from tropical North America. Specifically, we examine sediments from Lake Chalco, located in the Valley of Mexico, central Mexico (19°30’N, 99°W). The basin represents a hydrological closed system surrounded by the...

Paleoclimate reconstruction using Pleistocene paleosols along the middle Atbara River in Eastern Sudan

M. Mohammednoor, Robert Bussert , S. Tsukamoto , M. Richter , O. El Bedri , B. Kraatz , K. Salih , J. Müller , A. Eisawi & F. Bibi
Along the middle Atbara River, Pleistocene alluvial sediments dated to ~200 to 20 ka are exposed in eastern Sudan over a length of about 200 km with a maximum thickness of 50 m. The Atbara River today has its headwaters in the northern Ethiopian Plateau and is the last major tributary of the Nile before it flows through the Sahara. Previous studies and our fieldwork since 2018 have resulted in extensive finds of fossil terrestrial...

Studying glacial/interglacial cycles from downhole logging data: an application to the ICDP drilling project Lake Junín, Peru

Simona Pierdominici, Christian Zeeden , Jochem Kück , Donald Rodbell & Marc Abbott
Helmholtz-Zentrum Potsdam Deutsches GeoForschungsZentrum - GFZ, Germany (1); Leibniz Institute for Applied Geophysics, Hannover, Germany (2); Union College, Schenectady, NY 12308, USA (3); Dep. Of Geology and Planetary Science, University of Pittsburg, USA (4)

Can the history of the lake records covering the glacial-interglacial cycles be reconstructed from downhole logging data without the high-resolution data derived from core analysis? To answer this question, we present a study reconstructing glacial-interglacial sediment variability and an estimate...

The Pleistocene sediments of the Palaeoatbara in eastern Sudan as an archive for the evolution of the Nile river system

Robert Bussert , Mosab Mohammednoor , Faysal Bibi , Faysal Bibi , Sumiko Tsukamoto , Omar Bedri , Brian Kraatz , Ignacio Lazagabaster , Johannes Müller , Khalaf Salih & Ali Eisawi
Geological evidence and geodynamic modelling suggest that the Nile river system has been largely stable since its origins ~30 Ma. The Nile could have provided a long-term migration route for vertebrates including hominins between Eastern and Northern Africa. However, other geological data contradict such an old stabilisation of the course of the Nile. Fieldwork along the middle stretches of the Atbara River, the last tributary to the Nile before it crosses the Sahara, provides evidence...

Analyses of geophysical borehole data of Prees-2 (England) as part of the ICDP JET project

Katharina Leu , Thomas Wonik & Christian Zeeden
In the end of 2020, an approx. 650 m deep core was drilled at Prees in Shropshire, England, as part of the ICDP project JET (Integrated Understanding of the Early Jurassic Earth System and Timescale). The main objective of this project is to obtain and characterize a complete and continuous sedimentary archive of the 25 million years of the Early Jurassic. The Early Jurassic period (200-175 million years) was a period of extreme environmental changes:...

Von der Nekropole zum Siedlungsplatz. Bericht über die Grabungskampagnen 2018 und 2019 in der Petosiris-Nekropole von Tuna el-Gebel

Katja Lembke, Clementina Caputo, Ercan Erkul, Rex Haberland, Rebekka Mecking, Wolfgang Rabbel, Jenny H. Schlehofer, Harald Stümpel & Katharina Westphalen
Ausgrabungen und Georadarmessungen in der Nekropole Tuna el-Gebel haben 2018 und 2019 neue Erkenntnisse über das Areal ergeben. Teilweise freigelegt wurden ein Steinbau (GB 73) und ein Gebäude aus ungebrannten Lehmziegeln (GB 72). Der Steinbau wurde in der Kaiserzeit als Grabbau genutzt, darüber hinaus verweist die Keramik auf eine Nachnutzung in der Spätantike. Die Anzahl und die Typen der Gefäße sprechen für die Ansiedlung einer größeren Gruppe von Menschen. GB 72 war zweistöckig und verfügte...

The imprint of astronomical climate forcing: geochronometer and paleoclimate archive

Christian Zeeden , Stefanie Kaboth-Bahr , Anna-Joy Drury , Qiang Fang & Mehrdad Sardar Abadi
The pacing of the global climate system by variations in orbital parameters is clearly demonstrated in the timing and specific patterns of various geoarchives, including sapropels, glacial/interglacial cycles and many other examples. The imprint of astronomical cycles can be used as high-precision geochronometer, and as paleoclimatic information. Extreme events can especially be expected to relate to extremes in insolation. We invite contributions utilizing the imprint of Milankovic cycles as preserved in the geological record in...

Specifics of downhole logging data for time series analysis and cyclostratigraphy

Christian Zeeden , Arne Ulfers , Mehrdad Sardar Abadi , Thomas Grelle , Katja Hesse , Katharina Leu & Thomas Wonik
There is a large amount of downhole logging data gathered for scientific and commercial purposes, but studies applying time series analysis and cyclostratigraphy are not abundant. Especially the fast availability of logging data makes it valuable, also for decisions on which cores to investigate first. Here, we summarize the specific properties of downhole logging data most relevant for time series analysis and cyclostratigraphy. As for data from core- or outcrop analysis, it is important to...

ICDP Project DOVE (Drilling Overdeepened Alpine Valleys): Seismic surveys across the sites

Thomas Burschil , Hermann Buness , Anna-Catharina Brandt , David C. Tanner , Gerald Gabriel , Ulrike Wielandt-Schuster & Jürgen Reitnerr
The panalpine project "DOVE" (Drilling Overdeepened Alpine Valleys), co-funded by the International Continental Scientific Drilling Program (ICDP), is drilling a series of overdeepened glacial troughs around the Alps that were formed by subglacial erosion during past glaciations. The sedimentary fill of these troughs, consisting of multiple stacked and nested glacial sequences, provides the best archives of when and where glaciers reached the Alpine forelands. The combined data from all DOVE sites comprising synchronous or asynchronous...

ICDP Project DOVE (Drilling Overdeepened Alpine Valleys): First results from the Basadingen Borehole

Sebastian Schaller , Flavio Anselmetti , Marius Büchi , Markus Fiebig , Gerald Gabriel , Ernst Kroemer , Frank Preusser , Jürgen Reitner , Bennet Schuster , David Tanner & Ulrike Wielandt-Schuster
The panalpine project "DOVE" (Drilling Overdeepened Alpine Valleys), co-funded by the International Continental Scientific Drilling Program (ICDP), is drilling a series of overdeepened glacial troughs around the Alps that were formed by subglacial erosion during past glaciations. The sedimentary fill of these troughs, consisting of multiple stacked and nested glacial sequences, provides the best archives of when and where glaciers reached the Alpine forelands. The combined data from all DOVE sites comprising synchronous or asynchronous...

Fachinformationssystem Geophysik: Änderung der BHT-Korrekturverfahren für einfach belegte Messungen

Thorsten Agemar
Zur Erstellung von Temperaturkarten und 3D-Temperaturmodellenwerden neben gestörten und ungestörten Temperaturlogs, Lagerstättentemperaturen und Fördertests auch Einzelmessungen im Bohrlochtiefsten verwendet. Diese sog. Bottom Hole Temperatures (BHT) werden in fast allen Industriebohrungen, unmittelbar nach Einstellen der Bohrarbeiten, ausgeführt und sind durch den Bohrvorgang (Spülungsumlauf) thermisch gestört. Eine Korrektur (Extrapolation) dieser BHT-Werte auf ungestörte Temperaturen ist möglich, da im Bohrlochtiefsten der störende Einfluss des Spülungsumlaufs auf das Temperaturfeld am geringsten ist. In Abhängigkeit von der Stillstandzeit nach Bohrende,...

Drilling overdeepened (Eastern) Alpine Valleys and Basins

Markus Fiebig , Flavio Anselmetti , Marius Büchi , Gerald Gabriel , Ernst Kroemer , Frank Preusser , Jürgen Reitner , Sebastian Schaller , Bennet Schuster , David Tanner & Ulrike Wielandt-Schuster
The panalpine project "DOVE" (Drilling Overdeepened Alpine Valleys), co-funded by the International Continental Scientific Drilling Program (ICDP), is drilling a series of overdeepened glacial troughs around the Alps that were formed by subglacial erosion during past glaciations. In the northeastern section of the DOVE project, we (re)investigate the inneralpine basin of Bad Aussee (Traun glacier area, Austria), the subalpine basin of the Salzach Foreland glacier (Neusillersdorf, Bavaria), and the tongue basin area of the Pleistocene...

Registration Year

  • 2023
    2
  • 2022
    8
  • 2021
    1
  • 2020
    3

Resource Types

  • Text
    14

Affiliations

  • Leibniz Institute for Applied Geophysics
    13
  • Geological Survey of Austria
    3
  • Bayerisches Landesamt für Umwelt
    2
  • University of Freiburg
    2
  • University of Bern
    2
  • Landesamt für Geologie, Rohstoffe und Bergbau
    2
  • Leibniz University Hannover
    2
  • Kiel University
    2
  • University of Natural Resources and Life Sciences, Vienna
    2
  • //ror.org/02jbayz55:Faculty of Minerals and Oil, International University of Africa, Madani St, Khartoum 12223, Sudan
    1