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  • 04.04. Geology  (2)
  • DEEP; Deep Lake Drilling System; DLDS; ICDP5045-1; Lake Ohrid, Macedonian/Albanian border  (2)
  • 04.08. Volcanology  (1)
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  • 1
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    Sediment characteristics, geochemistry and XRF counts of composite core ICDP5045-1 and Co1261 at Lake Ohrid (Macedonia, Albania) down to 247 meter sediment depth (2016)
    PANGAEA
    In:  Supplement to: Francke, Alexander; Wagner, Bernd; Just, Janna; Leicher, Niklas; Gromig, Raphael; Baumgarten, Henrike; Vogel, Hendrik; Lacey, Jack H; Sadori, Laura; Wonik, Thomas; Leng, Melanie J; Zanchetta, Giovanni; Sulpizio, Roberto; Giaccio, Biagio (2016): Sedimentological processes and environmental variability at Lake Ohrid (Macedonia, Albania) between 637 ka and the present. Biogeosciences, 13(4), 1179-1196, https://doi.org/10.5194/bg-13-1179-2016
    Details
    Publication Date: 2023-07-07
    Description: Lake Ohrid (Macedonia, Albania) is thought to be more than 1.2 million years old and host more than 300 endemic species. As a target of the International Continental scientific Drilling Program (ICDP), a successful deep drilling campaign was carried out within the scope of the Scientific Collaboration on Past Speciation Conditions in Lake Ohrid (SCOPSCO) project in 2013. Here, we present lithological, sedimentological, and (bio-)geochemical data from the upper 247.8m composite depth of the overall 569m long DEEP site sediment succession from the central part of the lake. According to an age model, which is based on 11 tephra layers (first-order tie points) and on tuning of bio-geochemical proxy data to orbital parameters (second-order tie points), the analyzed sediment sequence covers the last 637 kyr. The DEEP site sediment succession consists of hemipelagic sediments, which are interspersed by several tephra layers and infrequent, thin (〈 5 cm) mass wasting deposits. The hemipelagic sediments can be classified into three different lithotypes. Lithotype 1 and 2 deposits comprise calcareous and slightly calcareous silty clay and are predominantly attributed to interglacial periods with high primary productivity in the lake during summer and reduced mixing during winter. The data suggest that high ion and nutrient concentrations in the lake water promoted calcite precipitation and diatom growth in the epilimnion during MIS15, 13, and 5. Following a strong primary productivity, highest interglacial temperatures can be reported for marine isotope stages (MIS) 11 and 5, whereas MIS15, 13, 9, and 7 were comparably cooler. Lithotype 3 deposits consist of clastic, silty clayey material and predominantly represent glacial periods with low primary productivity during summer and longer and intensified mixing during winter. The data imply that the most severe glacial conditions at Lake Ohrid persisted during MIS16, 12, 10, and 6, whereas somewhat warmer temperatures can be inferred for MIS14, 8, 4, and 2. Interglacial-like conditions occurred during parts of MIS14 and 8.
    Keywords: DEEP; Deep Lake Drilling System; DLDS; ICDP5045-1; Lake Ohrid, Macedonian/Albanian border
    Type: Dataset
    Format: application/zip, 2 datasets
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    DATA PANGAEA
  • 2
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    Chronology, (bio-)geochemical, sedimentary, stable isotope, pollen, and tephrochronologic data of Lake Ohrid's DEEP site sequence (5045-1) between 447.12 m and the sediment surface in concert with transient climate simulations (2018)
    PANGAEA
    In:  Supplement to: Wagner, Bernd; Vogel, Hendrik; Francke, Alexander; Friedrich, Tobias; Donders, Timme H; Lacey, Jack H; Leng, Melanie J; Regattieri, Eleonora; Sadori, Laura; Wilke, Thomas; Zanchetta, Giovanni; Albrecht, Christian; Bertini, Adele; Combourieu-Nebout, Nathalie; Cvetkoska, Aleksandra; Giaccio, Biagio; Grazhdani, Andon; Hauffe, Torsten; Holtvoeth, Jens; Joannin, Sébastien; Jovanovska, Elena; Just, Janna; Kouli, Katerina; Kousis, Ilias; Koutsodendris, Andreas; Krastel, Sebastian; Lagos, Markus; Leicher, Niklas; Levkov, Zlatko; Lindhorst, Katja; Masi, Alessia; Melles, Martin; Mercuri, Anna Maria; Nomade, Sébastien; Nowaczyk, Norbert R; Panagiotopoulos, Konstantinos; Peyron, Odile; Reed, Jane M; Sagnotti, Leonardo; Sinopoli, Gaia; Stelbrink, Björn; Sulpizio, Roberto; Timmermann, Axel; Tofilovska, Slavica; Torri, Paola; Wagner-Cremer, Friederike; Wonik, Thomas; Zhang, Xiaosen (2019): Mediterranean winter rainfall in phase with African monsoons during the past 1.36 million years. Nature, https://doi.org/10.1038/s41586-019-1529-0
    Details
    Publication Date: 2023-11-25
    Description: This dataset presents the chronological framework, (bio-)geochemical, mineralogic stable isotope, pollen, and tephrochronologic data of the upper 448 m of the DEEP site (5045-1) sediment sequence recovered from the central part of Lake Ohrid (Macedonia, Albania) under the umbrella of the International Continental Scientific Drilling Program (ICDP) and the project Scientific Collaboration on Past Speciation Conditions in Lake Ohrid (SCOPSCO). The investigated interval comprises fine-grained muds with intercalated tephra layers and mass movement deposits of mostly less than 5 cm thickness. Two tephra layers of thicknesses more than 5 cm were excluded prior to age-depth modelling, which is based on tephrostratigraphy, tephrochronology, magnetostratigraphy, and tuning of biogeochemical proxy data versus local orbital parameters. (Bio-)geochemical analyses comprise X-Ray fluorescence scanning at 2.5 mm resolution (Potassium and Calcium intensities), and total inorganic carbon (TOC) and total organic carbon (TOC) determinations at 16 cm resolution. The relative abundance of quartz minerals (Quartz peak area, 16 cm resolution) was detected by means of Fourier Transform Infrared Spectrometry (FTIRS). Oxygen and carbon stable isotope were analysed on (interglacial) sediments where endogenic calcite crystals were found to be abundant. Pollen data presented herein at 64 cm resolution comprise a sub-dataset of the total pollen counts and presents relative percentages of arboreal taxa minus pine (AP-pine), and of deciduous oaks, respectively. Tephrochronologic data comprises geochemical fingerprint analyses of individual glass shards found in the sediments of Lake Ohrid, and a new Ar/Ar age for tephra V5 from the Montalbano Jonico section. Climate time series data are derived from a transient 784 ka simulation using the earth system model LOVECLIM as well as NOAA reanalysis precipitation data of the Lake Ohrid region for the tim period 1979-2017.
    Keywords: DEEP; Deep Lake Drilling System; DLDS; ICDP5045-1; Lake Ohrid, Macedonian/Albanian border
    Type: Dataset
    Format: application/zip, 6 datasets
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    DATA PANGAEA
  • 3
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    Mediterranean winter rainfall in phase with African monsoons during the past 1.36 million years (2019)
    Details
    Publication Date: 2021-02-25
    Description: Mediterranean climates are characterized by strong seasonal contrasts between dry summers and wet winters. Changes in winter rainfall are critical for regional socioeconomic development, but are difficult to simulate accurately1 and reconstruct on Quaternary timescales. This is partly because regional hydroclimate records that cover multiple glacial-interglacial cycles2,3 with different orbital geometries, global ice volume and atmospheric greenhouse gas concentrations are scarce. Moreover, the underlying mechanisms of change and their persistence remain unexplored. Here we show that, over the past 1.36 million years, wet winters in the northcentral Mediterranean tend to occur with high contrasts in local, seasonal insolation and a vigorous African summer monsoon. Our proxy time series from Lake Ohrid on the Balkan Peninsula, together with a 784,000-year transient climate model hindcast, suggest that increased sea surface temperatures amplify local cyclone development and refuel North Atlantic low-pressure systems that enter the Mediterranean during phases of low continental ice volume and high concentrations of atmospheric greenhouse gases. A comparison with modern reanalysis data shows that current drivers of the amount of rainfall in the Mediterranean share some similarities to those that drive the reconstructed increases in precipitation. Our data cover multiple insolation maxima and are therefore an important benchmark for testing climate model performance.
    Description: Published
    Description: 256–260
    Description: 5A. Ricerche polari e paleoclima
    Description: JCR Journal
    Keywords: paleoclimate Mediterranean Pleistocene ; 04.04. Geology
    Repository Name: Istituto Nazionale di Geofisica e Vulcanologia (INGV)
    Type: article
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  • 4
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    On the reliability of the Matuyama–Brunhes record in the Sulmona Basin—Comment to ‘A reappraisal of the proposed rapid Matuyama–Brunhes geomagnetic reversal in the Sulmona Basin, Italy’ by Evans and Muxworthy (2018) (2019)
    In:  Evans, M.E. & Muxworthy, A.R., 2018. A re-appraisal of the proposed rapid Matuyama–Brunhes geomagnetic reversal in the Sulmona Basin, Italy, Geophys. J. Int., 213(3), 1744–1750.
    Details
    Publication Date: 2019-01-09
    Description: The Matuyama–Brunhes Boundary (MBB) recorded in the lacustrine sequence in the Sulmona basin (central Apennines, Italy) raised considerable scientific interest and has been the focus of various papers (Giaccio et al. 2013; Sagnotti et al. 2014; 2016). The interest comes from evidence for a very sharp geomagnetic polarity transition, that is radioisotopically dated. A paper recently published by Evans and Muxworthy (2018) questions the reliability of the Sulmona palaeomagnetic record. With new measurements on companion samples from the same stratigraphic block studied by Evans and Muxworthy, we show that directional results obtained by different demagnetization treatments (AF, thermal and thermal + AF) are in close agreement.We here propose a different interpretation of the magnetostratigraphy, and confirm that the palaeomagnetic record of the MBB geomagnetic reversal in the Sulmona basin is properly documented
    Description: Published
    Description: 296–301
    Description: 1A. Geomagnetismo e Paleomagnetismo
    Description: JCR Journal
    Keywords: Reversals: process, time scale, magnetostratigraphy ; Rock and mineral magnetism. ; 04.05. Geomagnetism ; 04.04. Geology
    Repository Name: Istituto Nazionale di Geofisica e Vulcanologia (INGV)
    Type: article
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  • 5
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    The Italian Quaternary volcanism (2024)
    AIQUA
    Details
    Publication Date: 2024-03-13
    Description: The peninsular and insular Italy are punctuated by Quaternary volcanoes and their rocks constitute an important aliquot of the Italian Quaternary sedimentary successions. Also away from volcanoes itself, volcanic ash layers are a common and frequent feature of the Quaternary records, which provide us with potential relevant stratigraphic and chronological markers at service of a wide array of the Quaternary science issues. In this paper, a broad representation of the Italian volcanological community has joined to provide an updated comprehensive state of art of the Italian Quaternary volcanism. The eruptive history, style and dynamics and, in some cases, the hazard assessment of about thirty Quaternary volcanoes, from the northernmost Mt. Amiata, in Tuscany, to the southernmost Pantelleria, in Sicily Channel, are here reviewed in the light of the substantial improving of the conceptual models, methodological approaches and the overall knowledge made in the last decades in the volcanological field study. We hope that the prest review can represent an useful and agile document summarising the knowledege on the Italian volcanism at the service of the Quaternary community operating in central Mediterranean area.
    Description: Published
    Description: 221-284
    Description: OSV2: Complessità dei processi vulcanici: approcci multidisciplinari e multiparametrici
    Description: N/A or not JCR
    Keywords: Stratigraphy, Geochronology, geochemistry, Quaternary volcanism, eruptive history, Italy ; 04.08. Volcanology
    Repository Name: Istituto Nazionale di Geofisica e Vulcanologia (INGV)
    Type: article
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