Quaternary, 2020 The Eemian was the last interglacial period (~130 to 115 ka BP) to precede the current interglacial. In Eastern Mediterranean marine sediments, it is marked by a well-developed and organic-rich “sapropel” layer (S5), which is thought to ...
Christopher Satow +6 more
doaj +1 more source
Tephra studies in New Zealand: an historical review. [PDF]
, 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
A multidisciplinary study of an exceptional prehistoric waste dump in the mountainous inland of Calabria (Italy) : implications for reconstructions of prehistoric land use and vegetation in Southern Italy [PDF]
, 2020 The mountainous inland of northern Calabria (Southern Italy) is known for its sparse prehistoric human occupation. Nevertheless, a thorough multidisciplinary approach of field walking, geophysical survey and invasive research led to the discovery of a ...
Arienzo, Ilenia +9 more
core +3 more sources
Stratigraphy and chronology of the Stent tephra, a c. 4000 year old distal silicic tephra from Taupo Volcanic Centre, New Zealand. [PDF]
, 1994 Tephrostratigraphic and chronologic studies in two areas of the North Island have identified a previously unrecorded, thin, distal silicic tephra derived from the Taupo Volcanic Centre.
Alloway, Brent V. +4 more
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Geochemistry, Geophysics, Geosystems, 2020 Volcanoes in the East Asian/Pacific region have been the source of some of the largest magnitude eruptions during the Late Quaternary, and accurately evaluating their eruptive histories is essential for hazard assessments.
D. McLean +17 more
doaj +1 more source
Holocene tephrostratigraphy in the Shiretoko Peninsula, Hokkaido, Japan
The Quaternary Research (Daiyonki-Kenkyu), 2008 北海道東部，知床半島のほぼ中央に位置する羅臼火山は，過去約2,200年間のうち3時期にマグマ噴火したことが知られており，それぞれ降下テフラ（Ra-1 : 500～700 cal BP, Ra-2 : ca. 1,400 cal BP, Ra-3 : ca. 2,200 cal BP）および火砕流を噴出した．これら羅臼起源のテフラは，いずれも斜方輝石および単斜輝石を含むなど鏡下での特徴が類似するが，脱水ガラス屈折率は異なり，識別が可能である．羅臼火山の南西約4.5kmに位置する天頂山火山から約1,900年前に噴出した天頂山aテフラ（Ten-a）は，多量の石質岩片のほか，フレーク状火山ガラス，斜長石，斜方輝石などの本質物質を含む．その火山活動はマグマ水蒸気噴火だったと推定される．Ten-aの噴出量は約0.
Yugo Nakamura +3 more
openaire +2 more sources
Late Cenozoic tephrostratigraphy offshore the southern Central American Volcanic Arc: 1. Tephra ages and provenance [PDF]
, 2016 We studied the tephra inventory of 18 deep sea drill sites from six DSDP/ODP legs (Legs 84, 138, 170, 202, 205, 206) and two IODP legs (Legs 334 and 344) offshore the southern Central American Volcanic Arc (CAVA).
A. Freundt +122 more
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Examination of Late Palaeolithic archaeological sites in northern Europe for the preservation of cryptotephra layers [PDF]
, 2015 We report the first major study of cryptotephra (non-visible volcanic ash layers) on Late Palaeolithic archaeological sites in northern Europe. Examination of 34 sites dating from the Last Termination reveals seven with identifiable cryptotephra layers ...
Antoine, Pierre +59 more
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Lacustrine mollusc radiations in the Lake Malawi Basin : experiments in a natural laboratory for evolution [PDF]
, 2012 In terminal Pliocene-early Pleistocene times, part of the Malawi Basin was occupied by paleo-lake Chiwondo. Molluscan biostratigraphy situates this freshwater lake either in the East African wet phase between 2.7-2.4 Ma or that of 2.0-1.8 Ma.
Gautier, Achilles, Van Damme, Dirk
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Terrestrial, Atmospheric and Oceanic Sciences, 2009 The giant piston core MD01-2387 taken from the eastern Celebes Sea basin provides a marine tephrostratigraphy with higher solution for inferring explosive volcanism in the area surrounding the basin for the past 350 kyr.
Yueh-Ping Ku +4 more
doaj +1 more source