Results 1 to 10 of about 4,329 (248)

Marine tephrochronology: a personal perspective [PDF]

open access: greenGeological 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.
Lowe, David J.
core   +8 more sources

Tephrochronology [PDF]

open access: yes, 2015
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 ...
A Moebis   +154 more
core   +5 more sources

Tephrochronology and Absolute Age Determination

open access: bronzeThe Quaternary Research (Daiyonki-Kenkyu), 1967
Most tephrochronological studies based upon absolute ages are derived from historical records of eruption and radiocarbon dates from Holocene and Pleistocene times. However, unless associated with some organic matters whose ages are younger than 35, 000 years old, tephra layers usually could not be dated.Recently Kigoshi explored the possibility that ...
Kunio Kobayashi
openalex   +4 more sources

Tephrostratigraphy and tephrochronology of lakes Ohrid and Prespa, Balkans [PDF]

open access: yesBiogeosciences, 2010
Four cores from Balkans lakes Ohrid and Prespa were examined for recognition of tephra layers and cryptotephras, and the results presented along with the review of data from other two already published cores from Lake Ohrid.
R. Sulpizio   +4 more
doaj   +6 more sources

Tephrochronology in faulted Middle Pleistocene tephra layer in the Val d’Agri area (Southern Italy)

open access: diamondAnnals of Geophysics, 2006
The High Agri River Valley is a Quaternary Basin located along the hinge of the Southern Apennines fold-andthrust belt. The inner margin of the orogen has been affected by intense transtensional and normal faulting, which accompanied vigorous volcanism ...
L. Ferranti   +6 more
doaj   +3 more sources

First discovery of Holocene cryptotephra in Amazonia. [PDF]

open access: yesSci Rep, 2015
The use of volcanic ash layers for dating and correlation (tephrochronology) is widely applied in the study of past environmental changes. We describe the first cryptotephra (non-visible volcanic ash horizon) to be identified in the Amazon basin, which ...
Watson EJ   +3 more
europepmc   +3 more sources

Tephrochronology of New Volcanic Ash

open access: bronzeThe Quaternary Research (Daiyonki-Kenkyu), 1963
When a volcano eruptes, its pyroclastics are deposited over the surface of the earth, so the depositional features of the pyroclastics tell us the history of volcanic activities. Therefore, if we wish to investigate the tephrochronology of pyroclastics which spread over the surface of the earth, the following works should be done.1) At first, we must ...
Shinobu YAMADA
openalex   +4 more sources

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

open access: yesScientific 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   +14 more
doaj   +2 more sources

High-resolution Holocene record based on detailed tephrochronology from Torfdalsvatn, north Iceland, reveals natural and anthropogenic impacts on terrestrial and aquatic environments [PDF]

open access: goldClimate of the Past
Open questions remain around the Holocene variability of climate in Iceland, including the relative impacts of natural and anthropogenic factors on Late Holocene vegetation change and soil erosion.
D. J. Harning   +9 more
doaj   +2 more sources

Late-Holocene land surface change in a coupled social-ecological system, southern Iceland : a cross-scale tephrochronology approach [PDF]

open access: green, 2014
This work is supported by a UK Natural Environment Research Council (NERC) PhD studentship (NE/F00799X/1)The chronological challenge of cross-scale analysis within coupled socio-ecological systems can be met with tephrochronology based on numerous well ...
Dugmore, Andrew   +1 more
core   +3 more sources

Home - About - Disclaimer - Privacy