Results 101 to 110 of about 9,430 (230)

The ‘Roxolany Tephra’ (Ukraine) – new evidence for an origin from Ciomadul volcano, East Carpathians [PDF]

open access: yes, 2016
We present major element glass data and correlations for the ‘Roxolany Tephra’ - a so far geochemically unconstrained volcanic ash layer previously described in last glacial (Marine Isotope Stage 2) loess deposits of the Roxolany loess–palaeosol complex ...
Gertisser
core   +1 more source

Krasheninnikov Caldera (Eastern Kamchatka): age and magnitude of eruption

open access: yesВестник Камчатской региональной ассоциации "Учебно-научный центр". Серия: Науки о Земле
New data on the composition of the pyroclastic deposits of the Krasheninnikov caldera allowed us to correlate it to the previously studied tephra horizon Geys30, which until recently was erroneously attributed to an eruption within the Geysernaya caldera.
V.V. Ponomareva   +5 more
doaj   +1 more source

Discovery of halloysite books in a ~270,000 year-old buried tephra deposit in northern New Zealand

open access: yes, 2010
As part of a wider study examining the geomechanical properties, especially sensitivity, of sequences of Quaternary pyroclastic and associated deposits and buried soils in the landslide-prone western Bay of Plenty area near Tauranga, eastern North Island,
Lowe, David J.   +3 more
core  

Tephra fall clean-up in urban environments [PDF]

open access: yes, 2015
Tephra falls impact urban communities by disrupting transport systems, contaminating and damaging buildings and infrastructures, and are potentially hazardous to human health.
Wilson, T.M., Hayes, J.L., Magill, C.
core   +1 more source

Unravelling upbuilding pedogenesis in tephra and loess sequences in New Zealand using tephrochronology

open access: yes, 2010
The genesis of soils developed in either tephra or loess on stable sites differs markedly from that of soils developed on rock because classical topdown processes operate in conjuction with geological processes whereby material is added to the land ...
Lowe, David J., Tonkin, Philip J.
core  

Peatlands, volcanoes and climate: Ecological and palaeoecological studies in Alaska and Scotland

open access: yes, 2005
PhDThis thesis investigates direct and indirect volcanic impacts on peatlands using palaeoecological and ecological techniques. The primary approach used is palaeoecological studies across tephra layers. A multi-proxy methodology was adopted including
Payne, Richard John
core  

Ages of 24 widespread tephras erupted since 30,000 years ago in New Zealand, with re-evaluation of the timing and palaeoclimatic implications of the Lateglacial cool episode recorded at Kaipo bog

open access: yes, 2013
Tephras are important for the NZ-INTIMATE project because they link all three records comprising the composite inter-regional stratotype developed for the New Zealand climate event stratigraphy (NZ-CES).
Lowe, D.J.   +6 more
core   +1 more source

Age of the Rotoehu Ash. Comment.

open access: yes, 1995
Suggests that the article by Whitehead & Ditchburn (1994), although presenting useful new data on 230Th/232Th analyses, is flawed and misleading in suggesting that the Rotoiti Tephra is considerably younger than c.
Lowe, David J., Hogg, Alan G.
core  

Tephra-stack of combined sediment record ELSA

open access: yes, 2016
Tephra layers of individual volcanic eruptions are traced in several cores from Eifel maar lakes, drilled between 1998 and 2014 by the Eifel Laminated Sediment Archive (ELSA).
Sirocko, Frank   +3 more
core   +1 more source

Connecting with tephras: principles, functioning, and applications of tephrochronology in Quaternary science

open access: yes, 2013
Tephrochronology is a unique method for linking and dating geological, palaeoecological, palaeoclimatic, or archaeological sequences or events. The method relies firstly on stratigraphy and the law of superposition, which apply in any study that connects
Lowe, David J.
core  

Home - About - Disclaimer - Privacy