High-frequency paleoclimate signals from Foulden Maar, Waipiata Volcanic Field, southern New Zealand: An Early Miocene varved lacustrine diatomite deposit

Lindqvist, Jon K.; Lee, Daphne E.

doi:10.1016/j.sedgeo.2009.07.009

Cited by 87 publications

(81 citation statements)

References 40 publications

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“…(Smith, 1986;Rayner et al, 1991;White, 1992;Pirrung et al, 2008). Later, quiet lacustrine sedimentation will develop in the deep centre of the lake, including the mud and diatomite layers that are of great use in studies of paleoclimate (Zolitschka, 1992;Ognjanova-Rumenova and Vass, 1998;Kaiser et al, 2006;Lindqvist and Lee, 2009). Lacustrine deposits are also very common in sedimentary deposits of ancient maars (Hack, 1942;Smith, 1986;Nemeth and Martin, 1999).…”

Section: Post-eruptive Cratersmentioning

confidence: 99%

Maar-diatreme volcanoes: A review

White

Ross

2011

Journal of Volcanology and Geothermal Research

345

251

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Maar-diatreme volcanoes are produced by explosive eruptions that cut deeply into the country rock. A maar is the crater cut into the ground and surrounded by an ejecta ring, while the diatreme structure continues downward and encloses diatreme and root zone deposits. Here we attempt an evenhanded review of maardiatreme volcanology that extends from mafic to kimberlitic varieties, and from historical maar eruptions to deeply eroded or mined diatreme structures. We conclude that maar-diatreme eruptions are episodic. Ejecta rings provide invaluable insight into eruption processes and sequence, but are incomplete records of diatreme formation. Deposits within the diatreme structure include, in varying proportions, lower unbedded deposits sometimes typified by subvertical contacts among domains of debris emplaced sequentially, and upper bedded deposits formed by sedimentation on surfaces open to the atmosphere. A basal root zone comprises the transition from coherent magmatic feeder dike to clastic deposits formed by fragmentation of magma and enclosing country rock; root zones are irregular in form, and the clastic deposits are typically intruded by contorted dikes. Irregular root zone-like chaotic breccias cut by contorted dikes are also present within diatreme deposits, where they represent intra-diatreme fragmentation zones and record changes in the location of the explosion locus during eruption.

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Section: Post-eruptive Cratersmentioning

confidence: 99%

Maar-diatreme volcanoes: A review

White

Ross

2011

Journal of Volcanology and Geothermal Research

345

251

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“…Lindqvist and Lee (2009) analyze the high-frequency paleoclimate signals from an Early Miocene varved, lacustrine diatomite succession in the Foulden Maar. The high quality and good preservation of these deposits and their location in southern New Zealand enable the authors to make some interesting suggestions about Early Miocene climatic changes in this Pacific region.…”

Section: The 4th International Limnogeology Congress Of Barcelonamentioning

confidence: 99%

Limnogeology: Ancient and modern tales of an evolving Earth

Cabrera¹,

Kordesch²,

Alonso-Zarza³

et al. 2009

Sedimentary Geology

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“…There was seasonality to the climate, as indicated by the "varves" in the Foulden Maar diatomite (Lindqvist and Lee, 2009). However, there is no convincing evidence that this seasonality extended to drought.…”

Section: Discussion Early Miocene-earliest Middle Miocenementioning

confidence: 99%

“…The earliest slice is represented by the lower Manuherikia Group, including the Dunstan Formation and Nevis Oil Shale Member, the Gore Lignite Measures, and the Foulden Maar in southern New Zealand (a discussion of stratigraphy is given as Appendix 1). The Foulden material has been directly dated to the earliest early Miocene (Lindqvist and Lee, 2009), whereas the other two areas cover a wider range of time that includes the early Miocene and probably the early middle Miocene Mildenhall and Pocknall, 1989;Pole and Douglas, 1998). It is highly likely, by comparison with similar but much better dated coal sequences in Australia (e.g., Holdgate et al, 2007) Pole (2007.…”

Section: Methodsmentioning

confidence: 99%

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The Miocene climate in New Zealand: Estimates from paleobotanical data

Pole¹

2014

Palaeontologia Electronica

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Miocene New Zealand was a small, highly oceanic landmass which makes it ideal for recording terrestrial climate, free of the complications of a continental setting. Fortunately, it has a good Miocene fossil record, both marine and terrestrial. This paper reviews past conclusions about Miocene climate then attempts to derive some key climate indices for the period using a variety of plant fossil proxies. The paper looks at three slices of Miocene time -a broad early to earliest middle Miocene time, a restricted period in the middle Miocene, and broader middle-late Miocene. The results suggest early to earliest middle Miocene Mean Annual Temperatures (MATs) reached at least 17-18°C, thus, about 6-7°C warmer than today (coastal areas of southern New Zealand today have a MAT of about 11°C). At times Miocene MAT may have reached 19-20°C. These figures support the cooler estimates of New Zealand Miocene climate that have been made previously by using palebotanical proxies, rather than those based on marine invertebrates. Based on plant fossils there is no evidence that New Zealand ever reached truly 'tropical' (i.e., megathermal) conditions (> 24-25°C). The climate in the middle Miocene is confounded by signs of precipitation and temperature change, and the rarity of leaf fossils. However, the data suggest both cooling and drying from the early Miocene. The presence of crocodiles yet the disappearance of palms, suggests a MAT that was at the lower end of existence for both of these groups, perhaps about 14°C. By the late Miocene, there is evidence for significant cooling, both from leaf size and a drop in plant diversity, which resulted in vegetation dominated in many places by Nothofagus.Mike Pole. Queensland Herbarium, Brisbane Botanic Gardens Mt Coot-tha,

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High-frequency paleoclimate signals from Foulden Maar, Waipiata Volcanic Field, southern New Zealand: An Early Miocene varved lacustrine diatomite deposit

Cited by 87 publications

References 40 publications

Maar-diatreme volcanoes: A review

Maar-diatreme volcanoes: A review

Limnogeology: Ancient and modern tales of an evolving Earth

The Miocene climate in New Zealand: Estimates from paleobotanical data

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