Results 31 to 40 of about 9,073 (173)
Combining machine learning techniques, microanalyses and large geochemical datasets for tephrochronological studies in complex volcanic areas: new age constraints for the Pleistocene magmatism of Central Italy [PDF]
, 2017 Characterization, correlation and provenance determination of tephra samples in sedimentary sections (tephrochronological studies) are powerful tools for establishing ages of depositional events, volcanic eruptions, and tephra dispersion. Despite the large literature and the advancements in this research field, the univocal attribution of tephra ...
arxiv +1 more source
, 2018 The 1 Myr tephra records of IODP (International Ocean Discovery Program) Holes U1436A and U1437B in the Izu‐Bonin fore‐ and reararc were investigated in order to assess provenance and eruptive volumes, respectively.
J. Schindlbeck +5 more
semanticscholar +1 more source
Frontiers in Earth Science, 2018 Real-time estimation of eruptive source parameters during explosive volcanic eruptions is a major challenge in terms of hazard evaluation and risk assessment as these inputs are essential for tephra dispersal models to forecast the impact of ash plumes ...
V. Freret-Lorgeril +8 more
semanticscholar +1 more source
Journal of Quaternary Science, 2019 Five cores from the southern Tyrrhenian and Ionian seas were studied for their tephra and cryptotephra content in the 4.4–2.0 ka time interval. The chronological framework for each core was obtained by accelerator mass spectrometry 14C dating, the ...
D. Insinga +9 more
semanticscholar +1 more source
The Depositional Record, EarlyView.A limestone cave in the NW Dinarides exhibits an anomalous presence of montmorillonite clay, not commonly found in surrounding caves, posing questions about its origin and age. Analysis reveals a composition similar to weathered tephra from the Smrekovec Volcanic Complex, suggesting transport by north‐east winds.
Nadja Zupan Hajna +12 more
wiley +1 more source
Quaternary Research, 2003 AbstractAnalyses of two infilled lakes in Blekinge, southeast Sweden, indicate the presence of at least three tephra horizons of Termination 1 and early Holocene age. Geochemical analyses confirm the presence of the Borrobol Tephra, the Askja Tephra (10,000 14C yr B.P.), and one previously unreported tephra of Icelandic origin.
Stefan Wastegård +2 more
openaire +4 more sources
Journal of Quaternary Science, EarlyView.ABSTRACT Understanding soil erosion, its history and links to potential drivers such as land use (particularly agriculture and deforestation), different cultural perspectives and climate change are crucial for the development of effective management and conservation strategies.
Jahzeel Aguilera Lara, SARAH E. Metcalfe
wiley +1 more source
Journal of Quaternary Science, EarlyView.ABSTRACT Megafauna became extinct during the late Quaternary, with climate changes and human activities the two main proposed extinction drivers. Palaeoloxodon naumanni (Naumann's elephant) and Mammuthus primigenius roamed the Japanese archipelago during the Pleistocene.
Yuichi I. Naito
wiley +1 more source
A catalogue of major and trace element data for Icelandic Holocene silicic tephra layers
Journal of Quaternary Science, 2019 Tephra layers with Icelandic provenance have been identified across the North Atlantic region in terrestrial, lacustrine, marine and glacial environments.
R. Meara +4 more
semanticscholar +1 more source
Journal of Quaternary Science, EarlyView.ABSTRACT Northwest Europe experienced high‐amplitude climate change at the onset and end of the Younger Dryas (YD; ca 12 800–11 600 cal a BP), a crucial period to develop our understanding of natural climate dynamics. European palaeoclimatological records generally suggest a bipartite structure of the YD, potentially due to a northward retreat of the ...
Christopher P. Francis +5 more
wiley +1 more source