Results 71 to 80 of about 4,329 (248)

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

open access: yesFrontiers 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   +3 more
doaj   +1 more source

Tephra studies in New Zealand: an historical review. [PDF]

open access: yes, 1990
The development of tephra studies in New Zealand may be divided into four main periods: Period 1, late 19th century to late 1920s; Period 2, late 1920s to early 1950s; Period 3, early 1950s to 1973; Period 4, 1973 to late 1980s.
Lowe, David J.
core   +2 more sources

Challenges in dating blanket peat and implications for understanding its initiation in Ireland

open access: yesJournal of Quaternary Science, Volume 40, Issue 6, Page 996-1009, August 2025.
ABSTRACT Blanket peat is widespread in maritime extra‐tropical environments. Prehistoric land‐use activity was traditionally invoked as the stimulus of blanket peat initiation in the British Isles, but recently, climate has been viewed as the driver of peat formation.
Helen Essell   +2 more
wiley   +1 more source

INTREPID Tephra-II: - 1307F [PDF]

open access: yes, 2013
The INTREPID Tephra project, “Enhancing tephrochronology as a global research tool through improved fingerprinting and correlation techniques and uncertainty modelling”, was an overarching project of the international community of tephrochronologists of ...
Lowe, David J.
core   +1 more source

Bipolar Seesaw of Atmospheric CO2 Between North Pacific and Southern Ocean at Millennial Timescales

open access: yesGeophysical Research Letters, Volume 52, Issue 13, 16 July 2025.
Abstract The interhemispheric relation of deep‐water ventilation and surface‐ocean productivity may have played a prominent role in past atmospheric CO2 regulation. However, how these processes vary on orbital‐millennial timescales remains poorly understood.
Yi Zhong   +21 more
wiley   +1 more source

Climate variability over the last 92 ka in SW Balkans from analysis of sediments from Lake Prespa [PDF]

open access: yesClimate of the Past, 2014
The transboundary Lake Prespa (Albania/former Yugoslav Republic of Macedonia/Greece) has been recognized as a conservation priority wetland. The high biodiversity encountered in the catchment at present points to the refugial character of this ...
K. Panagiotopoulos   +4 more
doaj   +1 more source

Connecting and dating with tephras: principles, functioning, and application of tephrochronology in Quaternary research [PDF]

open access: yes, 2015
Tephrochronology, the characterisation and use of volcanic-ash layers as a unique chronostratigraphic linking, synchronizing, and dating tool, has become a globally-practised discipline of immense practical value in a wide range of subjects including ...
Lowe, David J.
core   +1 more source

Cryptotephra from a ~120 ka Tondano eruption in a sediment core from Lake Towuti (Indonesia)

open access: yesJournal of Quaternary Science, Volume 40, Issue 5, Page 741-746, July 2025.
ABSTRACT Southeast Asia is one of the most volcanically active regions in the world, yet their long‐term eruptive history has been comparatively little studied. In particular, little work has explored the potential of sedimentary archives to record distal cryptotephra, which may help in identifying some of the region's larger Quaternary eruptions. Here,
Jinheum Park   +8 more
wiley   +1 more source

Building an 18 000-year-long paleo-earthquake record from detailed deep-sea turbidite characterisation in Poverty Bay, New Zealand [PDF]

open access: yesNatural Hazards and Earth System Sciences, 2012
Two ~20 m-long sedimentary cores collected in two neighbouring mid-slope basins of the Paritu Turbidite System in Poverty Bay, east of New Zealand, show a high concentration of turbidites (5 to 6 turbidites per meter), interlaid with hemipelagites ...
H. Pouderoux, G. Lamarche, J.-N. Proust
doaj   +1 more source

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

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   +1 more source

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