Zobrazeno 1 - 10
of 11
pro vyhledávání: '"B G McFadgen"'
Autor:
M. Skerrett, J. Tamihana, H. Smith, W. P. de Lange, James Williams, B. G. McFadgen, J. Te Tuhi, B. Searle, P. Redfearn, J. Cope, S. J. Smith, Philip M. Ross, Michael P. Beentjes
Publikováno v:
New Zealand Journal of Marine and Freshwater Research. 52:196-231
Toheroa (Paphies ventricosa) were formerly abundant on west and south-facing New Zealand surf beaches. Harvesting of this surf clam was intense during the early to mid-1900s, and populations declin...
Autor:
F B Knox, B G McFadgen
Publikováno v:
Radiocarbon. 46:987-995
Least-squares fitted smooth curves to radiocarbon versus tree-ring calibration data for the period AD 1140 to 1950 are compared with climatic warming and cooling of the North Atlantic (Little Ice Age), and with recorded sunspot numbers over the perio
Autor:
B G McFadgen, F B Knox
Publikováno v:
Radiocarbon. 43:87-118
Smoothed curves are least-squares fitted to three sets of decadal radiocarbon calibration data from New Zealand and British Isles (AD 1725–1935) and western North America (AD 1145–1945). The curves are compared with each other and with a curve pr
Publikováno v:
New Zealand Journal of Geology and Geophysics. 43:579-586
New Zealand's largest barrier island, Matakana Island, consists of an elongate coastal sand barrier of Holocene age that encloses Tauranga Harbour and adjoins an area of Pleistocene terraces and terrace remnants. The lowest Pleistocene terrace is wel
Autor:
B G McFadgen, F B Knox
Publikováno v:
Radiocarbon. 39:193-204
We Fourier transformed and filtered calibration curve data to compensate for the averaging effect of radiocarbon-dating sets of adjacent tree rings. A Wiener Filter was also applied to minimize the effects of the counting errors of the dates on the r
Autor:
B. G. McFadgen, M. R. Manning
Publikováno v:
Radiocarbon. 32:229-232
Radiocarbon activity of 11 modern marine shell samples from the New Zealand region is enhanced compared with the surface layers of the average world ocean. The measured enhancement, δR, is equivalent to −31 ± 13 years. On this basis, the Institut
Autor:
B. G. Mcfadgen, J. C. Yaldwyn
Publikováno v:
New Zealand Journal of Geology and Geophysics. 27:27-33
On Enderby Island, Holocene sand dunes are separated into lower and upper deposits by layers of peat and silt. The lower deposits contain roughly equal proportions of shell fragments and basalt grains; the upper deposits are almost entirely shell fra
Autor:
B. G. McFadgen
Publikováno v:
Journal of the Royal Society of New Zealand. 9:375-382
Archaeological excavation of a Maori occupation site at Lake Poukawa shows the site was probably occupied between 150 and 300 years ago and has been badly disturbed by European farming. There is no evidence for human occupation before the Taupo Pumic
Autor:
B. G. McFadgen
Publikováno v:
New Zealand Journal of Geology and Geophysics. 23:249-256
Earthquake-uplifted beach ridges around the west Wellington coast are correlated and the beach ridge uplifted by the Haowhenua earthquake of Maori tradition (c. 500 years ago) is identified. A Maori plaggen soil is overlain by the beach ridge and is
Autor:
B. G. McFADGEN
Publikováno v:
Archaeometry. 13:71-81