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Tephrochronological studies in northern England
The Holocene, 1996Tephrostratigraphic investigations of two upland blanket bogs in northern England show that micro scopic layers of tephra are present. Their geochemistry shows that they are identical to two Icelandic tephra layers of known age found at sites in Scotland and the north of Ireland.
Valerie A. Hall, Jonathan R. Pilcher
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Tephrochronology and Palaeoecology: The Value of Isochrones
1981The applications of tephrochronology to the correlation of temporally similar yet spatially disjunct flora and fauna are discussed, using as examples recent work in Iceland and Kenya. The paucity of such studies is noted and its relevance to studies in palaeoecology and island biogeography commented upon.
P. C. Buckland +3 more
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An outline tephrochronology for the Holocene of the north of Ireland
Journal of Quaternary Science, 1996Geochemically typed thin layers of Icelandic Holocene tephras form a tephrochronology for the north of Ireland. Tephrochronology construction is based on geochemical linkage with dated historic Icelandic eruptions and high-precision multisample radiocarbon dating.
F. Gerry McCormac +2 more
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Quaternary Tephrochronology in the Mediterranean Region [PDF]
, 1981 Quaternary volcanism in the Mediterranean region was highly explosive, especially in the Roman-Campanian province, the Aeolian Islands and the Hellenic island arc. Pantelleria and Etna were less explosive. Tephra layers originating from all of these volcanoes have been encountered in Quaternary sediments.
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The word “tephra” is an all-encompassing term for the explosively erupted, pyroclastic (fragmental) products of a volcanic eruption. Since the early pioneering work of Thorarinsson and others, the value of tephras in providing time-parallel marker horizons or isochrons is now well understood.
Alloway, B. V. +3 more
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Alloway, B. V. +3 more
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The Application of Tephrochronology in Iceland
1981The situation in Iceland for establishing a tephrochronological time scale is very good. This is due to the great number of volcanic eruptions in post glacial time, a great range of variation in chemistry between tephra layers, a rapid thickening of the soil, separating layers with small age difference, and the existence of detailed accounts of many ...
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The Interrelationship between Magnetostratigraphy and Tephrochronology [PDF]
, 1981 Magnetostratigraphy and tephrochronology represent complementary techniques for the determination of the ages of sedimentary sequences. Each method is subject to its own limitations. The magnetic polarity zonation of a sequence may not be sufficiently characteristic to correlate it to the magnetic polarity time scale.
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Tephrochronology and Quaternary Studies in Japan [PDF]
, 1981 This paper gives an overview of the development of tephrochronology in Japan and discusses several problems regarding the Japanese Quaternary. Tephra from Quaternary stratovolcanoes in Japan is mainly of andesitic composition with subordinate amounts of basalt and rhyolite. In contrast, the eruptions causing the formation of calderas are of rhyodacitic
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Tephrochronology, Environmental Change and the Norse Settlement of Iceland
Environmental Archaeology, 2000AbstractThe first human impacts on the Icelandic environment came with the Norse colonisation or Landnam of the ninth century AD. The colonisation represents a fundamental environmental change that is both rapid and profound. In this paper we assess geomorphological dimensions of the initial settlement period using a tephrochronology that includes the ...
Gordon Cook +3 more
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MAJOR CONSTRAINTS ON THE USE OF RADIOCARBON DATING FOR TEPHROCHRONOLOGY
Quaternary International, 1998It is well recognised that radiocarbon dating is a powerful tool capable of providing a detailed chronostratigraphy for areas that have been subjected to recurrent volcanic activity during Late Pleistocene and Holocene time. In such geological contexts carbon-bearing materials suitable for 14C dating are, for the most part, refractory components of ...
CALDERONI, Gilberto, TURI, Bruno
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