Christian Zeeden

Christian Zeeden
Leibniz Institute for Applied Geophysics | LIAG · Rock Physics & Borehole Geophysics

PhD

About

204
Publications
57,251
Reads
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2,232
Citations
Citations since 2016
160 Research Items
2062 Citations
20162017201820192020202120220100200300400500
20162017201820192020202120220100200300400500
20162017201820192020202120220100200300400500
20162017201820192020202120220100200300400500
Introduction
I am working in the Rock Physics & Borehole Geophysics group at the Leibniz Institute for Applied Geophysics (LIAG) in Hannover/Germany. I am working on evaluation of borehole- and rock magnetic data with focus on cyclostratigraphy and paleoenvironmental reconstructions from loess.
Additional affiliations
February 2019 - present
Leibniz Institute for Applied Geophysics
Position
  • Researcher
January 2017 - December 2018
October 2013 - December 2016
RWTH Aachen University
Position
  • PostDoc Position

Publications

Publications (204)
Article
Astrochronology is fundamental to many paleoclimate studies, but a standard statistical test has yet to be established for validating stand-alone astronomically-tuned time scales (those lacking detailed independent time control) against their astronomical-insolation tuning curves. Shackleton et al. [1995] proposed that the modulation of precession'...
Article
In this study we provide a correlative age model for last glacial loess at the Rasova-Valea cu Pietre site in the Lower Danube region, based on the correlation of palaeoenvironmental proxies to independently dated palaeoclimate archives, luminescence dating and independent age control provided by the geochemically confirmed presence of the Campania...
Article
Age-depth-relationships are essential to understand expressions of Earth history. Age-depth-relationships reveal the environmental significance of (terrestrial) sediment deposits and relate them to other paleoenvironmental archives. Although luminescence-based ages are of paramount importance, their incorporation in age-depth- models is limited due...
Article
Loess-paleosol sequences are the most extensive terrestrial paleoclimate records in Europe and Asia documenting atmospheric circulation patterns, vegetation, and sedimentary dynamics in response to glacial-interglacial cyclicity. Between the two sides of the Eurasian continent, differences may exist in response and response times to glacial changes...
Article
The geologic time scale serves as an essential instrument for reconstructing Earth history. Astrochronology, linking regular sedimentary alternations to theoretical quasi-periodic astronomical rhythms, often provides the highest resolution age models for strata that underlie the time scale. Although various methods for testing astronomically-tuned...
Article
Full-text available
Understanding the moisture history of low latitudes from the most recent glacial period of the latest Pleistocene to post-glacial warmth in continental tropical regions is hampered by the lack of continuous time series. We conducted downhole spectral gamma (γ) ray and magnetic susceptibility logs over 300 m of lacustrine deposits of Lake Chalco (Me...
Article
The Solomon Sea is the main source of the equatorial undercurrent and the main crossroad of the equatorial region and the South Pacific Ocean. Based on multi-species planktonic foraminiferal geochemical proxies, here we reconstruct the vertical thermal-hydrological variabilities over the last 568,000 years in the Solomon Sea. The proxies used inclu...
Article
Full-text available
Loess–palaeosol sequences (LPSs) are key archives for the reconstruction of Quaternary environmental conditions, but there is a lack of investigated records from the southern Upper Rhine Graben (southwestern Germany). To close this gap, a LPS at Bahlingen-Schönenberg was investigated at high resolution using a multi-method approach. Infrared stimul...
Article
Loess Paleosol Sequences (LPS) are valuable archives of climatic and environmental change in terrestrial systems and contribute to local and global dust systems. Due to their widespread occurrence across continents, LPS are well suited to study the interface of climate subsystems, on different time scales. Yet, high-resolution investigations of LPS...
Article
Full-text available
The nature of half-precession (HP) cycles (∼9000–12,000 years), although identified in numerous records, is still poorly understood. Here we focus on HP signals in Lake Ohrid and in a variety of different marine and terrestrial proxy records from Europe and the Northern Atlantic region. Our study examines the temporal evolution of the HP signal fro...
Article
Loess deposits are the most extent continental archives of climatic- and environmental change and represent important components of local and global dust systems. Consequently, their geochemistry provides an excellent basis for studying climate oscillations on land and how these affect processes in the terrestrial system. It is, however, challengin...
Article
Full-text available
Robust age-depth models are essential for developing sophisticated interpretations of the sedimentological history in lake basins. In most cases, such models are created using an integrated geoscientific approach, including biostratigraphy, magnetostratigraphy and radiometric dating. In this study, we present an approach to construct age-depth mode...
Research
Full-text available
Supplementary materials to article: Wouters, Sébastien, Michel Crucifix, Matthias Sinnesael, Anne-Christine Da Silva, Christian Zeeden, Miroslav Zivanovic, Frédéric Boulvain, et Xavier Devleeschouwer. 2022. « A Decomposition Approach to Cyclostratigraphic Signal Processing ». Earth-Science Reviews 225 (103894). https://doi.org/10.1016/j.earscirev.2...
Article
Sedimentary rocks can record signals produced by highly complex processes. These signals are generated by a progressive deposition of sediments which can be affected, mainly through the climate system, by regular astronomical cycles (i.e. Milankovitch cycles), and by irregular oscillations like the El Niño-Southern Oscillation. Also, usually throug...
Article
The 10 m thick Madaras loess–palaeosol profile is one of the Hungarian outcrops that yielded Upper Palaeolithic artefacts in 1966. To clarify the nature of the deposits and establish a reliable litho‐ and chronostratigraphy, a profile was opened and sampled at 25 cm intervals on the northern side of the brickyard in 1975. Analyses focused on grain...
Conference Paper
Full-text available
Loess deposits of northern and northeastern Iran provide excellent sedimentary archives for understanding past climate and environment changes in the continental interior. The loess records paleoenvironmental change in Iran over multiple glacial cycles, and helps to assess the extent to which key features of loess stratigraphy can be traced along t...
Article
Full-text available
Understanding the dynamics between the East Asian summer (EASM) and winter monsoon (EAWM) is needed to predict their variability under future global warming scenarios. Here, we investigate the relationship between EASM and EAWM as well as the mechanisms driving their variability during the last 10,000 years by stacking marine and terrestrial (non-s...
Article
Full-text available
Global marine archives from the early Pleistocene indicate that glacial-interglacial cycles, and their corresponding sea-level cycles, have predominantly a periodicity of ~ 41 kyrs driven by Earth's obliquity. Here, we present a clastic shallow-marine record from the early Pleistocene in Southeast Asia (Cholan Formation, Taiwan). The studied strata...
Article
Full-text available
Loess deposits intercalated by paleosols are detailed terrestrial archives of Quaternary climate variability providing information on the global dust cycle and landscape dynamics. Their paleoclimatic significance is often explored by quantifying their mineral magnetic properties due to their sensitivity to local/regional hydroclimate variability. D...
Article
Full-text available
Earth's climate system is complex and inherently nonlinear, which can induce some extraneous cycles in paleo-climatic proxies at orbital time scales. The paleoenvironmental consequences of these extraneous cycles are debated owing to their complex origin. Here, we compile high-resolution datasets of total organic carbon (TOC) and stable carbon isot...
Article
In their discussion paper, Sümegi & Gulyás (2021) expressed their concerns about our remarks regarding the reliability of malacothermometer-based July paleotemperature reconstructions for the Carpathian Basin as published in Obreht et al. (2019). We are content to see that our paper inspired the continuation of the discussion, however, we have some...
Conference Paper
Full-text available
Loess-paleosol sequences (LPSs) are aeolian terrestrial paleoclimate archives able to conserve several hundreds of thousands years of climate history. Loess deposits cover at least 10 % of the northern hemisphere continental masses (Pécsi, 1990) and provide adequate properties to conserve climate changes imprinted in the stratigraphically analyzabl...
Article
A high-resolution analysis of the Zmajevac loess-palaeosol sequence in East Croatia (Baranja) was performed with the purpose to get new insights into the palaeoenvironmental history during the last three glacial-interglacial cycles. The post-IR infrared stimulated luminescence signal of feldspar, stimulated at 290°C (thereafter pIRIR290) was used t...
Article
Full-text available
In mid-latitude Eurasia, loess-paleosol sequences (LPS) provide the most widespread sedimentary records of Quaternary paleoenvironmental evolution. In the Middle Danube Basin (MDB), these archives cover at least the last million years of climate history, and occasionally contain archeological findings. The studied Zemun LPS is located on the right...
Article
Full-text available
The Upper Pleistocene geoarchives in the south‐eastern Carpathian Basin are represented predominantly by loess–palaeosol records. In 2015, a 10 m sediment core composed of clay‐rich lacustrine sediments was recovered by vibracoring a dry lake basin located between the Vršac Mountains (Serbia) and the Banat Sands in the south‐eastern Carpathian Basi...
Article
In this paper, the authors present new palaeoecological and sedimentological results from the Upper Palaeolithic site of Ságvár, Hungary. Simple (abundance and dominance) and advanced (cluster analysis, principal component analysis, correspondence) statistical analyses of malacological results were carried out, determining eight malacological zones...
Poster
Full-text available
We characterize half-precesssion signals (period of 9 - 12 ka) in Lake Ohrid on the Balkan Peninsula and set their occurence in relation to various records from /around Europe.
Conference Paper
Full-text available
We use gamma radiation data from geophysical downhole logging to identitfy tephra layers in Lake Chalco (Mexico)
Conference Paper
Full-text available
The Pleistocene was a phase of global cooling of the Earth through which glacial-interglacial cycles occurred, and the growth and decay of the ice-sheets resulted in quasi-cyclic sea-level fluctuations driven by orbital forcing. Despite that summer insolation is mostly controlled by precession, the records of the glacial cycles showcase a significa...
Article
Full-text available
Lake Towuti is located on central Sulawesi/Indonesia, within the Indo Pacific Warm Pool, a globally important region for atmospheric heat and moisture budgets. In 2015 the Towuti Drilling Project recovered more than 1000 m of drill core from the lake, along with downhole geophysical logging data from two drilling sites. The cores constitute the lon...
Article
Full-text available
Understanding the dynamics between the East Asian summer (EASM) and winter monsoon (EAWM) is needed to predict their variability under future global warming scenarios. Here, we investigate the relationship between EASM and EAWM as well as the mechanisms driving their variability during the last 10,000 years by stacking marine and terrestrial (non-s...
Article
Full-text available
The continuing development of analytical methods for investigating sedimentary records calls for iterative re-examination of existing data sets obtained on loess-palaeosol sequences (LPS) as archives of palaeoenvironmental change. Here, we re-investigate two LPS (Hecklingen, Zilly) in the northern Harz foreland, Germany, being of interest due to th...
Article
Full-text available
At the Willendorf site Upper Paleolithic archeological layers associated to early Aurignacian cultures were found. The environmental conditions of the associated society, potentially co-existing with Neanderthal groups, is still not fully understood. Here, we report on environmental magnetic analyses including anisotropy of the magnetic susceptibil...
Article
Full-text available
The Carpathian Basin is a key region for understanding modern human expansion into western Eurasia during the Late Pleistocene because of numerous early hominid fossil find spots. However, the corresponding archeological record remains less understood due to a paucity of well dated, contextualized sites. To help rectify this, we excavated and sampl...
Article
Full-text available
Loess-paleosol sequences (LPSs) are important terrestrial archives of paleoenvironmental and paleoclimatic information. One of the main obstacles for the investigation and interpretation of these archives is the uncertainty of their age-depth relationship. In this study, four different dating techniques were applied to the Late Pleistocene to Holoc...
Data
Two loess-paleosol sequences from the Heilbronn Basin in southwestern Germany, Frankenbach and Talheim, have been investigated to gain information about environmental conditions during the last interglacial-glacial cycle. Since paleoenvironmental research on terrestrial archives is crucial for understanding past climatic and environmental condition...
Conference Paper
Full-text available
Loess palaeosol sequences (LPSs) are terrestrial climatic archives capable of recording past climatic change. In particular, the alternation of interglacial and glacial periods is recognized in LPSs as intercalated buried soils (palaeosols) within loess units. For LPSs of the Eurasian loess belt, correlating low-frequency magnetic susceptibility (χ...
Presentation
Full-text available
Integrating magnetic susceptibility and colorimetric parameters for paleoenvironmental reconstructions from loess-paleosol sequences. A case study from the Middle Danube Basin. The full video of my talk can be found on Youtube under the following link: https://www.youtube.com/watch?v=7PjUdBfAHZE
Article
Full-text available
Paleoenvironmental reconstructions on a (supra-)regional scale have gained attention in Quaternary sciences during the last decades. In terrestrial realms, loess deposits and especially intercalations of loess and buried soils, so called loess-paleosol sequences (LPS) are important archives to unravel the terrestrial response to e.g. climatic fluct...
Article
Two phases of archaeological investigation were performed in the Novi Sad City Museum at Petrovaradin Fortress. In this study, we summarize the results of geo-archaeological investigations of the second period of excavation inside the Novi Sad City Museum building. The fortress is situated on a Danube terrace with the top of the bedrock at ca.123 m...
Article
The thick and apparently continuous loess-palaeosol sequences in the Vojvodina region of northern Serbia are recognized and well understood as some of the oldest and most complete terrestrial European palaeoclimatic archives. By contrast, there are few published records for loess profiles from other regions in Serbia. Here we address this knowledge...
Article
Loess-Palaeosol-Sequences (LPS) in the Central European region provide outstanding terrestrial polygenetic and multiphase archives responding to past climate and environments over various spatial and temporal scales. As yet, however, the geomorphological and pedogenic processes involved in LPS formation, and their interplay with changes in ecologic...
Conference Paper
Full-text available
Loess-palaeosol sequences (LPSs) are valuable records of Quaternary environmental change, especially in the northern hemisphere. In Eurasian LPS, the alternation of loess and palaeosol intervals reflects the uninterrupted but fluctuating dust deposition during the Quaternary and the fluctuations of temperature and precipitation responsible for the...
Article
Full-text available
The main cycles of Earth's eccentricity as recorded in paleoclimate archives signify 2nd order terms, combining two g-frequencies associated with the precession of perihelia of the inner planets and Jupiter. However, many weaker cycles are present and may be documented as well. Here we report on a thus far unnoticed ~200-kyr cycle observed in rhyth...
Article
Full-text available
A post-IR IRSL chronology and dust mass accumulation rates of the Nosak loess-palaeosol sequence in northeastern Serbia. Boreas, https://doi.org/10.1111/bor.12459. ISSN 0300-9483. In the Middle Danube Basin, Quaternary deposits are widely distributed in the Vojvodina region where they cover about 95% of the area. Major research during the last two...
Article
The extraction of palaeoenvironmental (palaeoclimatic) signals from the chemical composition of siliciclastic sediments is valuable for the reconstruction of past environments, particularly in continental basins. Here we test novel weathering proxies, which are less sensitive to lithological control than the previously used raw element ratios K/Al,...
Article
Full-text available
We present the findings from analysis and modeling of a stratigraphic series of magnetic susceptibility (MS) data measured with a portable MS meter from the Permian Salagou Formation loessite (south-central France). The results reveal discernible Milankovitch-scale paleoclimatic variability throughout the Salagou Formation, recording astronomically...
Poster
Full-text available
Loess-palaeosol sequences (LPSs) provide the most important northern hemispheric terrestrial Quaternary palaeoenvironmental records. In the Middle Danube basin, these archives cover the last million years (Marković et al., 2015) of climate history and contain archaeological horizons from occupations by early humans. The Zemun loess site (ZLS, locat...
Poster
Full-text available
Cylcostratigraphy is used to investigate quasi-cyclic patterns in sediments. It often provides insight about time and climate. While most studies utilize proxies related to precipitation and temperature, reconstruction of wind and flow directions is more challenging. The grain size of aeolian sediments can give insight into the transport distance o...
Conference Paper
Full-text available
Borehole logging data are not yet systematically assessed using cyclostratigraphic methods. In order to obtain a reliable understanding of (long) borehole logging datasets, and especially data from complex settings, a good understanding of the potential and specifics of relevant (time/depth) evolutive methods in cyclostratigraphy are an essential p...
Conference Paper
Full-text available
The vast Pleistocene aeolian sediments of the Lower Danube Basin are an important archive of Quaternary palaeoclimate dynamics in Southeast Europe. The intercalation of loess layers and fossil soils, so called loess-palaeosol sequences (LPS) are interpreted as the results of oscillating climate phases in the past. However, the characteristics of th...
Article
Full-text available
Loess deposits and intercalated palaeosols are widespread in the Quaternary record, and these have been extensively used to gain insights into continental paleoclimatic and paleo-environmental conditions and changes. Especially over Eurasia, loess geoarchives play an important role for our understanding of past changes. Loess covers almost 500 km 2...
Article
Full-text available
Millennial-scale palaeoclimate variability has been documented in various terrestrial and marine palaeoclimate proxy records throughout the Northern Hemisphere for the last glacial cycle. Its clear expression and rapid shifts between different states of climate (Greenland Interstadials and Stadials) represents a correlation tool beyond the resoluti...
Article
To contribute to a better understanding of Neogene climate evolution in Central Asia, we here present the first orbitally tuned time scale for a drillcore record from the Qaidam Basin (NE Tibetan Plateau) that consists of lacustrine sediments and spans the late Pliocene to early Pleistocene (~3.3 to 2.1 Ma). Our tuning of Core SG-1b is based on the...
Article
Full-text available
The northern Carpathian Basin has important geological, paleoenvironmental, and archeological records that are key to our understanding of the first modern human occupation of Europe. However, the nature and timing of hominin settlements in the region during the Late Pleistocene remain poorly understood. New fieldwork at Seňa I, Slovakia, has ident...