Pliocene and pleistocene plant microfossils from drillholes near Frankton, New Zealand

Couper, R. A.; Harris, W. F.

doi:10.1080/00288306.1960.10423141

Cited by 27 publications

(28 citation statements)

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“…Together, H. harrisii and Brassospora form a significant percentage of the total count. However, nowhere in the Opoitian do either of these pollen types dominate as they do in some coeval onshore sequences (e.g., Couper & Harris 1960), indicating that they are under-represented in this depositional environment.…”

Section: General Description Of the Pollen Assemblagesmentioning

confidence: 99%

“…One of the earliest onshore pollen studies covering the Pliocene-Pleistocene was that of Couper & Harris (1960). They showed that there was a gradual decline in Brassospora through the Pliocene and early Pleistocene leading to Fuscospora-and coniferdominated assemblages.…”

Section: Onshore Comparisonsmentioning

confidence: 99%

“…The significance of the more important extinct taxa found at Site 1123 has been discussed above and can be compared with the Pliocene and Pleistocene extinctions as illustrated in New Zealand literature (e.g., Couper & Harris 1960;Mildenhall & Suggate 1982;Mildenhall , 1999Mildenhall , 2001aNelson et al 1988Nelson et al , 1989. Generally, the same patterns are found with extinctions leading up to and within the MPT with only rare in situ extinct taxa, Bryosporis (not found at Site 1123), Acaciapollenites, Haloragacidites harrisii, Podosporites erugatus, and possibly Nothofagidites cranwelliae, appearing after the MPT.…”

Section: Onshore Comparisonsmentioning

confidence: 99%

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Deep‐sea record of Pliocene and Pleistocene terrestrial palynomorphs from offshore eastern New Zealand (ODP Site 1123, Leg 181)

Mildenhall

2003

New Zealand Journal of Geology and Geophysics

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Terrestrial palynomorph assemblages of Pliocene and Pleistocene age have been recovered from ODP Site 1123 (Leg 181), 1100 km offshore from eastern New Zealand and from a water depth of 3300 m. Palynomorphs occur in such significant numbers as to allow for a greatly enhanced correlation between the orbitally tuned marine record and climatically controlled changes in terrestrial vegetation, despite a long distance from shore and a great depth.Gradual changes in the dominant pollen types from more mesothermal taxa (Nothofagus subgenus Brassospora), in the Pliocene and early Pleistocene, to less mesothermal (Nothofagus subgenus Fuscospora and podocarp conifers) taxa in the middle and late Pleistocene reflect what have been detected in shorter onshore sections. Since assemblages are regional in origin, this suggests a gradual change from warm, humid, maybe cloudy conditions to a cooler, drier climate over time superimposed upon more intense glacial/interglacial cycles. The glacial periods in this marine setting have more Halocarpus, Phyllocladus, Nothofagus subgenus Fuscospora, and Coprosma pollen relative to the interglacials.Overall, the palynomorph assemblages are derived from regional podocarp/hardwood forest vegetation from the southern part of North Island, New Zealand, with pollen and spores from a range of terrestrial environments represented in all samples. Recycling has occurred but is difficult to quantify because of the great variation in the quality of preservation and the different sources and possible modes of transport of palynomorphs to the site of deposition.Angiosperm pollen are dominated by Nothofagus, but angiosperm pollen generally are relatively sparse, while robust spores such as Cyathea, and bisaccate pollen such as Podocarpus/Prumnopitys, with the ability to float great distances, are over-represented. This over-representation is the result of a constant supply of these taxa to the deposition site despite changes in the strength and direction of the wind and water currents over the depositional site, and changes in the vegetation, climate, and rates of erosion in source areas. A gradual decrease in the rate of extinction through the section occurs up to and within the Mid-Pleistocene Climate Transition with rare, probably recycled, extinct taxa appearing later than this. These extinctions provide a biostratigraphic link to the onshore terrestrial record, and the marine record has the potential to provide accurate dates for terrestrial extinctions.

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Section: General Description Of the Pollen Assemblagesmentioning

confidence: 99%

Section: Onshore Comparisonsmentioning

confidence: 99%

Section: Onshore Comparisonsmentioning

confidence: 99%

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Deep‐sea record of Pliocene and Pleistocene terrestrial palynomorphs from offshore eastern New Zealand (ODP Site 1123, Leg 181)

Mildenhall

2003

New Zealand Journal of Geology and Geophysics

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“…Podosporites parous, previously regarded as extinct by the end of Hautawan time (Couper 1960;Couper & Harris 1960;Mildenhall 1973), has recently been found in Marahauan sediments at Devil's Elbow Hill, between Wairoa and Napier, Hawke's Bay (unpublished Palynology Section records, New Zealand Geological Survey). P. erugatus has not been found in sediments younger than Hautawan, but it occurs in close association with P. parous.…”

Section: Palynology Of Porika Formationmentioning

confidence: 99%

“…The youngest sediments containing "brassi" beech-dominant palynofloras are from Hawke's Bay and are Mangapanian in age. The Frankton Drillhole (Couper & Harris 1960) has Mangapanian age samples dominated by both "brassi" and "fusca" beech, with "brassi" beech most abundant in only 4 samples. Couper (1960) regarded Triorites scabratus as "?Kaiatan (Middle Eocene) to ?Waitotaran" in age, but the senior author has not found the taxon in beds younger than Kapitean.…”

Section: Palynology Of Glenhope Formationmentioning

confidence: 99%

Palynology and age of the Tadmor Group (Late Miocene-Pliocene) and Porika Formation (early Pleistocene), South Island, New Zealand

Mildenhall

Suggate

1981

New Zealand Journal of Geology and Geophysics

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The Porika Formation, type formation of the Porikan glacial stage, contains palynomorphs of early Pleistocene (Hautawan) age. The underlying Tadmor Group consists of the Moutere Gravel overlying the Glenhope Formation. Palynomorphs from the Moutere Gravel are assigned to the Waipipian-Hautawan (middle Pliocene-early Pleistocene) and from the Glenhope Formation are assigned to the ?Kapitean-Opoitian (Late MioceneEarly Pliocene), although basal beds may be a little older.

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Systematische und genetische Pflanzengeographie

Gams¹,

Frenzel

1963

Bericht Über Das Jahr 1962

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Pliocene and pleistocene plant microfossils from drillholes near Frankton, New Zealand

Cited by 27 publications

References 1 publication

Deep‐sea record of Pliocene and Pleistocene terrestrial palynomorphs from offshore eastern New Zealand (ODP Site 1123, Leg 181)

Deep‐sea record of Pliocene and Pleistocene terrestrial palynomorphs from offshore eastern New Zealand (ODP Site 1123, Leg 181)

Palynology and age of the Tadmor Group (Late Miocene-Pliocene) and Porika Formation (early Pleistocene), South Island, New Zealand

Systematische und genetische Pflanzengeographie

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