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Search Results for Community: Science and Engineering

Now showing items 1-10 of 30

A wiggle-match date for Polynesian settlement of New Zealand

Hogg, Alan G.; Higham, Thomas F.G.; Lowe, David J.; Palmer, Jonathan G.; Reimer, Paula J.; Newnham, Rewi M. (2002)

Dating initial colonisation and environmental impacts by Polynesians in New Zealand is controversial. A key horizon is provided by the Kaharoa Tephra, deposited from an eruption of Mt Tarawera, because just underneath this ...
Stratigraphy, age, composition, and correlation of late Quaternary tephras interbedded with organic sediments in Waikato lakes, North Island, New Zealand

Lowe, David J. (1988)

Cores from 14 peaty lakes in the central Waikato region, northern North Island, contain a sequence of 41 well-preserved, mainly macroscopic, occasionally bedded, ash and lapilli layers ranging in thickness from c. 2 to 110 ...
A discontinuous ca. 80 ka record of Late Quaternary environmental change from Lake Omapere, Northland, New Zealand

Newnham, Rewi M.; Lowe, David J.; Green, John D.; Turner, Gillian M.; Harper, Margaret A.; McGlone, Matt S.; Stout, Stephen L.; Horie, Shoji; Froggatt, Paul C. (2004)

We present an integrated record of environmental change from Lake Omapere, Northland, New Zealand, based on palaeolimnological analysis of a 7-m-long core and eight adjunct cores spanning part of the last 80 calendar (cal.) ...
Stratigraphy and development of c. 17 000 year old Lake Maratoto, North Island, New Zealand, with some inferences about postglacial climatic change

Green, John D.; Lowe, David J. (1985)

The stratigraphy and geomorphology of Lake Maratoto and its surrounds were investigated as part of a programme of paleolimnological studies based on sediment cores from lakes in northern North Island. Changes in the lake ...
Quaternary tephra marker beds and their potential for palaeoenvironmental reconstruction on Chatham Island, east of New Zealand, southwest Pacific Ocean

Holt, Katherine A.; Wallace, R. Clel; Neall, Vincent; Kohn, Berry P.; Lowe, David J. (2010)

Tephras provide one of the most reliable methods of time control and synchronisation within Quaternary sequences. We report on the identification of two widespread rhyolitic tephras - the Kawakawa and Rangitawa tephras - ...
Fine-resolution pollen record of late-glacial climate reversal from New Zealand

Lowe, David J.; Newnham, Rewi M. (2000)

The temporal relationship between rapid climate shifts in the Northern and Southern Hemispheres at the end of the last glacial is crucial to understanding how the global climate system functions during periods of major ...
Does the bipolar seesaw extend to the terrestrial southern mid-latitudes?

Newnham, Rewi M.; Vandergoes, Marcus J.; Sikes, Elisabeth; Carter, Lionel; Wilmshurst, Janet M.; Lowe, David J.; McGlone, Matt S.; Sandiford, Anna (2011)

High precision comparison of Greenland and Antarctic ice cores, suggesting a pervasive antiphased temperature relationship between the polar hemispheres during the last glaciation, lends strong support to the bipolar seesaw ...
Sakurajima-Satsuma (Sz-S) and Noike-Yumugi (N-Ym) tephras: new tephrochronological marker beds for the last deglaciation, southern Kyushu, Japan

Moriwaki, Hiroshi; Suzuki, Takehiko; Murata, Masanori; Ikehara, Minoru; Machida, Hiroshi; Lowe, David J. (Elsevier, 2011)

Two prominent tephras, Sakurajima-Satsuma (Sz-S) erupted from Sakurajima volcano and Noike-Yumugi (N-Ym) erupted from Kuchierabujima Island, provide new key marker beds for dating and synchronizing palaeoenvironmental and ...
Tephrochronology and its application: A review

Lowe, David J. (Elsevier, 2011)

Tephrochronology (from tephra, Gk ‘ashes’) is a unique stratigraphic method for linking, dating, and synchronizing geological, palaeoenvironmental, or archaeological sequences or events. As well as utilising the Law of ...
A summary of terminology used in tephra-related studies

Lowe, David J.; Hunt, John B. (Archéo-Logis/CDERAD, 2001)

The word ‘tephra’, derived from a Greek word for ash, is a collective term for all the unconsolidated, primary pyroclastic products of a volcanic eruption. We summarise here the meanings and applicability of this and related ...