Results 1 to 10 of about 3,971 (220)

TEPHROCHRONOLOGY [PDF]

, 2014
Tephrochronology is the use of primary, characterized tephras or cryptotephras as chronostratigraphic marker beds to connect and synchronize geological, paleoenvironmental, or archaeological sequences or events, or soils/paleosols, and, uniquely, to transfer relative or numerical ages or dates to them using stratigraphic and age information together ...
Lowe, David J., Alloway, Brent V.
core   +7 more sources

Marine tephrochronology: a personal perspective [PDF]

Geological Society, London, Special Publications, 2014
This special volume on marine tephrochronology is remarkable, and timely, because it marks a concerted step towards what might be informally termed ‘phase 3’ of a revolution in Quaternary geosciences that began around 40 years ago. The 10 articles collectively represent a re-focussed examination of tephras and cryptotephras preserved in ocean sediments
Lowe, David J.
openaire   +5 more sources

Tephrochronology in Aotearoa New Zealand

New Zealand Journal of Geology, and Geophysics, 2021
Tephra deposits in Aotearoa New Zealand (ANZ) have been studied for >180 years. The now-global discipline of tephrochronology, which has some developmental roots in ANZ, forms the basis of a powerful chronostratigraphic correlational tool and age-equivalent dating method for geological, volcanological, palaeoenvironmental, and archaeological ...
Jenni L Hopkins, David J Lowe, Joanna L Horrocks   +2 more
exaly   +3 more sources

Cosmogenic helium signatures at Deception Island volcano (Antarctica): geochronological implications for its eruptive history [PDF]

Scientific Reports
Cosmogenic nuclei production for dating the Earth surface exposure of rock/mineral samples, especially 3He, is a robust technique in geochronology. We describe its application to constrain the ages of key eruptive episodes of the volcanic history of ...
Antonio M. Álvarez-Valero, Hirochika Sumino, Ray Burgess, Lara Arribas, Antonio Polo-Sánchez, Adelina Geyer, Antonio Caracausi, Helena Albert, Meritxell Aulinas, Masao Ban, Javier Borrajo, Marcos García-Arias, Genki Ichikawa, Gabor Kereszturi, José Antonio Lozano Rodríguez   +14 more
doaj   +2 more sources

Tephra without borders: Far-reaching clues into past explosive eruptions [PDF]

Frontiers in Earth Science, 2015
This review is intended to highlight recent exciting advances in the study of distal (>100 km from the source) tephra and cryptotephra deposits and their potential application for volcanology.
Vera ePonomareva, Maxim ePortnyagin, Maxim ePortnyagin, Siwan eDavies   +3 more
doaj   +2 more sources

Tephrochronology and its application: A review [PDF]

Quaternary Geochronology, 2011
Abstract Tephrochronology (from tephra , Gk ‘ashes’) is a unique stratigraphic method for linking, dating, and synchronizing geological, palaeoenvironmental, or archaeological sequences or events. As well as utilizing the Law of Superposition, tephrochronology in practise requires tephra deposits to be characterized (or ‘fingerprinted’) using ...
David J Lowe
exaly   +3 more sources

The environmental and evolutionary history of Lake Ohrid (FYROM/Albania): interim results from the SCOPSCO deep drilling project [PDF]

Biogeosciences, 2017
This study reviews and synthesises existing information generated within the SCOPSCO (Scientific Collaboration on Past Speciation Conditions in Lake Ohrid) deep drilling project.
B. Wagner, T. Wilke, A. Francke, C. Albrecht, H. Baumgarten, A. Bertini, N. Combourieu-Nebout, A. Cvetkoska, M. D'Addabbo, T. H. Donders, K. Föller, B. Giaccio, A. Grazhdani, T. Hauffe, J. Holtvoeth, S. Joannin, E. Jovanovska, J. Just, K. Kouli, A. Koutsodendris, S. Krastel, J. H. Lacey, N. Leicher, M. J. Leng, Z. Levkov, K. Lindhorst, A. Masi, A. M. Mercuri, S. Nomade, N. Nowaczyk, K. Panagiotopoulos, O. Peyron, J. M. Reed, E. Regattieri, L. Sadori, L. Sagnotti, B. Stelbrink, R. Sulpizio, S. Tofilovska, P. Torri, H. Vogel, T. Wagner, F. Wagner-Cremer, G. A. Wolff, T. Wonik, G. Zanchetta, X. S. Zhang   +46 more
doaj   +17 more sources

Millennium-scale changes in mire vegetation reconstructed from plot-based pollen and vegetation analysis and their implications for conservation [PDF]

Mires and Peat, 2023
Historical perspective helps ecologists and conservationists to better understand modern processes and potential future changes, but collecting long-term ecological data with fine spatiotemporal resolution is challenging.
Chuh Yonebayashi
doaj   +1 more source

Holocene Marine Tephra Offshore Ecuador and Southern Colombia: First Trench‐to‐Arc Correlations and Implication for Magnitude of Major Eruptions

Geochemistry, Geophysics, Geosystems, 2022
Tephra layers preserved in marine sediments are strong tools to study the frequency, magnitude and source of past major explosive eruptions. Thirty‐seven volcanoes from the Ecuadorian and Colombian arc, in the northern Andes, experienced at least one ...
Mathilde Bablon, Gueorgui Ratzov, François Nauret, Pablo Samaniego, François Michaud, Marianne Saillard, Jean‐Noël Proust, Jean‐Luc Le Pennec, Jean‐Yves Collot, Jean‐Luc Devidal, François Orange, Céline Liorzou, Sébastien Migeon, Silvia Vallejo, Silvana Hidalgo, Patricia Mothes, Miguel Gonzalez   +16 more
doaj   +1 more source

Machine Learning Applied to K-Bentonite Geochemistry for Identification and Correlation: The Ordovician Hagan K-Bentonite Complex Case Study

Geosciences, 2021
Altered tephras (K-bentonites) are of great importance for calibration of the geologic time scale, for local, regional, and global correlations, and paleoenvironmental reconstructions.
Achim D. Herrmann, John T. Haynes, Richard M. Robinet, Norlene R. Emerson   +3 more
doaj   +1 more source