Results 41 to 50 of about 4,329 (248)

A summary of terminology used in tephra-related studies [PDF]

open access: yes, 2001
The word ‘tephra’, derived from a Greek word for ash, is a collective term for all the unconsolidated, primary pyroclastic products of a volcanic eruption.
Hunt, John B., Lowe, David J.
core   +3 more sources

Stratigraphy and chronology of a 15ka sequence of multi-sourced silicic tephras in a montane peat bog, eastern North Island, New Zealand. [PDF]

open access: yes, 1999
We document the stratigraphy, composition, and chronology of a succession of 16 distal, silicic tephra layers interbedded with lateglacial and Holocene peats and muds up to c. 15 000 radiocarbon years (c.
Lowe, David J.   +2 more
core   +2 more sources

Ultra-distal tephra deposits and Bayesian modelling constrain a variable marine radiocarbon offset in Placentia Bay, Newfoundland [PDF]

open access: yesGeochronology, 2023
Radiocarbon dating marine sediments is complicated by the strongly heterogeneous age of ocean waters. Tephrochronology provides a well-established method to constrain the age of local radiocarbon reservoirs and more accurately calibrate dates.
A. J. Monteath   +5 more
doaj   +1 more source

Dating peat profiles using tephra: stratigraphy, geochemistry and chronology [PDF]

open access: yesMires and Peat, 2010
In this article we provide a brief overview of the protocols for dating peat profiles using tephrochronology. A standardised methodology for the detection, extraction and analysis of tephras is presented and the relevant problems and limitations are ...
G.T. Swindles   +2 more
doaj  

Geological evidence for paleotsunamis along eastern Sicily (Italy): an overview [PDF]

open access: yesNatural Hazards and Earth System Sciences, 2012
We present geological evidence for paleotsunamis along the ~230 km-long coast of eastern Sicily (Italy); combining this information with historical data, we reconstruct a unique history of tsunami inundations.
P. M. De Martini   +6 more
doaj   +1 more source

Cryptotephras in the marine sediment record of the Edisto Inlet, Ross Sea: Implications for the volcanology and tephrochronology of northern Victoria Land, Antarctica

open access: yesQuaternary Science Advances, 2023
We present the results of the tephrochronology study of a 14.49 m long marine sediment core (TR 17–08) collected in the Edisto Inlet, Ross Sea (Antarctica).
Alessio Di Roberto   +14 more
doaj   +1 more source

Tephrochronology and its application: A review [PDF]

open access: yesQuaternary 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 ...
openaire   +3 more sources

Relation between Central European Climate Change and Eifel Volcanism during the Last 130,000 Years: The ELSA-23-Tephra-Stack

open access: yesQuaternary
The analysis of tephra layers in maar lake sediments of the Eifel shows 14 well-visible tephra during the last glacial cycle from the Holocene to the Eemian (0–130,000 yr b2k).
Frank Sirocko   +5 more
doaj   +1 more source

Big grains go far: understanding the discrepancy between tephrochronology and satellite infrared measurements of volcanic ash [PDF]

open access: yesAtmospheric Measurement Techniques, 2015
There is a large discrepancy between the size of volcanic ash particles measured on the ground at least 500 km from their source volcano (known as cryptotephra) and those reported by satellite remote sensing (effective radius of 0.5–9 μm; 95% of ...
J. A. Stevenson   +4 more
doaj   +1 more source

Vedde Ash constrains Younger Dryas glacier re-advance and rapid glacio-isostatic rebound on Svalbard

open access: yesQuaternary Science Advances, 2022
The distal deposition of tephra from explosive volcanism has the potential to geochronologically constrain sedimentary archives and landforms.
Wesley R. Farnsworth   +12 more
doaj   +1 more source

Home - About - Disclaimer - Privacy