Towards a climate event stratigraphy for New Zealand over the past 30 000 years (NZ‐INTIMATE project)

Alloway, Brent V.; Lowe, David J.; Barrell, David; Newnham, Rewi M.; Almond, Peter C.; Augustinus, Paul; Bertler, Nancy A. N.; Carter, Lionel; Litchfield, Nicola; McGlone, Matt S.; Shulmeister, James; Vandergoes, Marcus J.; Williams, Paul W.; members, Nz-Intimate

doi:10.1002/jqs.1079

Cited by 305 publications

(310 citation statements)

References 127 publications

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“…Furthermore, the d/g and d/h patterns resemble one another, having a cross-correlation of 0.7 when sampled at the sites of each of the 5352 eruptions in our database. One major difference between the d/g and d/h volcanic frequency ratios is that only d/h registers increased values in Northern New Zealand and Hawaii, both of whose volcanoes experienced deglaciation (Alloway et al, 2007;Blard et al, 2007).…”

Section: Mapping Of Volcanic Activitymentioning

confidence: 99%

Feedback between deglaciation, volcanism, and atmospheric CO2

Huybers

Langmuir

2009

Earth and Planetary Science Letters

278

265

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Section: Mapping Of Volcanic Activitymentioning

confidence: 99%

Feedback between deglaciation, volcanism, and atmospheric CO2

Huybers

Langmuir

2009

Earth and Planetary Science Letters

278

265

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“…Until now, regional studies applying terrestrial cosmogenic nuclide dating (TCND) in New Zealand have focused on the glacier chronology of the late-Glacial and the MIS 2/1 transition, respectively, e.g. [6,[58][59][60]. In the current research project, surface exposure dating using the terrestrial cosmogenic 10 Be isotope has provided an alternative to radiocarbon ( 14 C) dating and compensates for some of its disadvantages, e.g.…”

Section: Terrestrial Cosmogenic Nuclide (mentioning

confidence: 99%

First attempt to combine terrestrial cosmogenic nuclide (10Be) and Schmidt hammer relative-age dating: Strauchon Glacier, Southern Alps, New Zealand

Winkler

2009

Open Geosciences

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This study provides the first attempt to combine terrestrial (in situ) cosmogenic nuclide (10Be) surface exposure dating with Schmidt hammer relative-age dating for the age estimation of Holocene moraines at Strauchon Glacier, Southern Alps, New Zealand. Numerous Schmidt hammer tests enable a multi-ridged lateral moraine system to be related to three late-Holocene ‘Little Ice Age’-type events. On the basis of cosmogenic 10Be ages, those events are dated to c. 2400, 1700, and 1100 years ago. Linear age-calibration curves are constructed in order to relate Schmidt hammer R-values to cosmogenic 10Be ages. The high explanation yielded reveals the causal link between both data sets. The potential of combining both methods in a ‘’multiproxy approach’ is discussed alongside possible future improvements. Terrestrial cosmogenic nuclide dating delivers absolute ages needed as fixed points for Schmidt hammer age-calibration curves. The Schmidt hammer technique can be used to crosscheck the boulder surfaces chosen for surface exposure dating by terrestrial cosmogenic nuclides. It should, therefore, reduce the number of samples necessary and costs.

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“…The latter advance is marked by a moraine mantled by loess with Kawakawa tephra concentrated at its base. Suggate & Almond (2005) concluded that in New Zealand, the LGM began with ice accumulating around 34 ka BP, though this is poorly constrained, with the most intense cooling during the last glacial coldest period (LGCP) between 28 and 18 ka BP (Alloway et al 2007). The Otira Glaciation has been regarded as broadly the equivalent of MIS 4, 3 and 2, with glacial deposits representing MIS 4, and a few cool-climate deposits in Westland, such as terminal moraines north-west of Lake Mapourika (Suggate & Almond 2005) and south-east of Okarito Lagoon (Almond et al 2001) The diamicton and coverbeds of the moraine do not show any evidence of shearing or disturbance, indicating that the moraine has not been overridden by ice since the tephra was deposited.…”

Section: Resultsmentioning

confidence: 99%

Lateral moraine age in Park Valley, Tararua Range, New Zealand

Brook

2009

Journal of the Royal Society of New Zealand

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Recent geomorphologie and sedimentologic investigations in Park Valley, in the central Tararua Range, have identified several landforms of glacial erosion and deposition, including cirque basins, a U-shaped glacial valley, and a lateral moraine ridge. The presence of Kawakawa tephra (Aokautere Ash) within loess c. 50 cm beneath the surface of the moraine has indicated that the moraine was formed prior to 27 ka, suggesting late MIS 3 glaciation in this sector of New Zealand. However, recently published 10 Be cosmogenic dates from glacially-scoured bedrock and an erratic block on the surface of the moraine indicate that glaciation was much later, the corollary being that the Kawakawa tephra has been re-distributed post-eruption, perhaps from the ridgelines surrounding the moraine. Here, two optically-stimulated luminescence ages on the loess are reported that suggests most of the moraine was formed during late MIS 3 or early MIS 2, and that a readvance at c. 17.7-18.7 ka extended as far as the moraine.

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Towards a climate event stratigraphy for New Zealand over the past 30 000 years (NZ‐INTIMATE project)

Abstract: NZ-INTIMATE members. 2007. Towards a climate event stratigraphy for New Zealand over the past 30 000 years (NZ-INTIMATE project).

Cited by 305 publications

References 127 publications

Feedback between deglaciation, volcanism, and atmospheric CO2

Feedback between deglaciation, volcanism, and atmospheric CO2

First attempt to combine terrestrial cosmogenic nuclide (10Be) and Schmidt hammer relative-age dating: Strauchon Glacier, Southern Alps, New Zealand

Lateral moraine age in Park Valley, Tararua Range, New Zealand

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