Phil Shane
Datos Biográficos
| ID | 4129963 |
|---|---|
| NOMBRE | Phil Shane |
| NOMBRES | Phil |
| APELLIDO | Shane |
| FIRMA | SHANE P |
| AFILIACIONES | University of Auckland |
| ORCID | 0000-0002-7824-1184 |
| VERIFICADO | Sí |
| TOTAL DE OBRAS | 9 |
| TOTAL DE CITAS | 0 |
| TOTAL COMO AUTOR | 9 |
| TOTAL COMO EDITOR | 0 |
| PRIMER AÑO DE PUBLICACIÓN | 1994 |
| AÑO MÁS RECIENTE DE PUBLICACIÓN | 2012 |
| ÍNDICE H | 0 |
Late Quaternary paleolimnology of Onepoto maar, Auckland, New Zealand
Correlation of basaltic tephra from Mt Wellington volcano
Compositional heterogeneity in tephra deposits resulting from the eruption of multiple magma bodies
Biotite composition as a tool for the identification of Quaternary tephra beds
Stratigraphically important Quaternary rhyolitic tephra deposits that erupted from the Okataina and Taupo volcanic centers in New Zealand can be geochemically identified using the FeO and MgO contents of their biotite phenocrysts. The FeO/MgO ratio in biotite does not correlate with FeO/MgO in the coexisting glass phase so that tephra beds with similar glass compositions can be discriminated by their different biotite compositions. Some individua…
Paleovegetation of marine isotope stages 4 and 3 in Northern New Zealand and the age of the widespread Rotoehu tephra
Paleolake sediment, constrained by tephrochronology, from Onepoto basin volcanic crater in Auckland, Northern New Zealand (36° 48′S), provides one of the few uninterrupted records of paleovegetation for marine oxygen isotope stages (MIS) 4 and 3 (76,000–26,000 yr B.P.) in the region. This period was characterized by cool temperate conifer-hardwood forest that lacked some of the warmer taxa typical of the Holocene. The period 64,400–60,500 yr B.P.…
Multiple Sources for Sea-Rafted Loisels Pumice, New Zealand
Sea-rafted Loisels Pumice is one of the few stratigraphic markers used to correlate late Holocene coastal deposits in New Zealand. Along with underlying sea-rafted products of the local Taupo eruption of ca. 1800 yr B.P., these events have been used to bracket the first arrival of humans at New Zealand. Loisels Pumice is dacitic to rhyolitic (SiO 2 63–78 wt%) in composition, but individual clasts are homogeneous (SiO 2 range ± 1 wt%). Characteris…
Isothermal plateau fission-track ages of tephra beds in an Early-Middle Pleistocene marine and terrestrial sequence, Cape Kidnappers, New Zealand
New Geochemical Evidence for the Youngest Toba Tuff in India
New geochemical data on tephra samples from a layer present at several archeological sites in India support correlation of this layer to the Youngest Toba Tuff, erupted from northern Sumatra about 74,000 yr ago. The data show that the Indian tephra layer is not a correlative of older tephra erupted from Toba, as has been suggested on the basis of artifact assemblages. Previously published geochemical data on the Indian tephra beds was based on bu…
Discriminant Function Analysis of Glass Chemistry of New Zealand and North American Tephra Deposits
Major, trace, and rare earth element analyses of volcanic glass are used separately or in combination for correlating Quaternary tephras, often by graphical or simple comparative methods. We have taken a statistical approach using discriminant function analysis (DFA) to assess the relative discriminating power of the different elements in volcanic glasses from several tectonovolcanic provinces. We found that major oxides are powerful discriminati…
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Discriminant Function Analysis of Glass Chemistry of New Zealand and North American Tephra Deposits
Major, trace, and rare earth element analyses of volcanic glass are used separately or in combination for correlating Quaternary tephras, often by graphical or simple comparative methods. We have taken a statistical approach using discriminant function analysis (DFA) to assess the relative discriminating power of the different elements in volcanic glasses from several tectonovolcanic provinces. We found that major oxides are powerful discriminati…
New Geochemical Evidence for the Youngest Toba Tuff in India
New geochemical data on tephra samples from a layer present at several archeological sites in India support correlation of this layer to the Youngest Toba Tuff, erupted from northern Sumatra about 74,000 yr ago. The data show that the Indian tephra layer is not a correlative of older tephra erupted from Toba, as has been suggested on the basis of artifact assemblages. Previously published geochemical data on the Indian tephra beds was based on bu…
Isothermal plateau fission-track ages of tephra beds in an Early-Middle Pleistocene marine and terrestrial sequence, Cape Kidnappers, New Zealand
Multiple Sources for Sea-Rafted Loisels Pumice, New Zealand
Sea-rafted Loisels Pumice is one of the few stratigraphic markers used to correlate late Holocene coastal deposits in New Zealand. Along with underlying sea-rafted products of the local Taupo eruption of ca. 1800 yr B.P., these events have been used to bracket the first arrival of humans at New Zealand. Loisels Pumice is dacitic to rhyolitic (SiO 2 63–78 wt%) in composition, but individual clasts are homogeneous (SiO 2 range ± 1 wt%). Characteris…
Biotite composition as a tool for the identification of Quaternary tephra beds
Stratigraphically important Quaternary rhyolitic tephra deposits that erupted from the Okataina and Taupo volcanic centers in New Zealand can be geochemically identified using the FeO and MgO contents of their biotite phenocrysts. The FeO/MgO ratio in biotite does not correlate with FeO/MgO in the coexisting glass phase so that tephra beds with similar glass compositions can be discriminated by their different biotite compositions. Some individua…
Paleovegetation of marine isotope stages 4 and 3 in Northern New Zealand and the age of the widespread Rotoehu tephra
Paleolake sediment, constrained by tephrochronology, from Onepoto basin volcanic crater in Auckland, Northern New Zealand (36° 48′S), provides one of the few uninterrupted records of paleovegetation for marine oxygen isotope stages (MIS) 4 and 3 (76,000–26,000 yr B.P.) in the region. This period was characterized by cool temperate conifer-hardwood forest that lacked some of the warmer taxa typical of the Holocene. The period 64,400–60,500 yr B.P.…
Compositional heterogeneity in tephra deposits resulting from the eruption of multiple magma bodies
Correlation of basaltic tephra from Mt Wellington volcano
Late Quaternary paleolimnology of Onepoto maar, Auckland, New Zealand
Geology and Paleoclimatology Research (8 obras) · Tephra (8 obras) · Volcano (8 obras) · Geochemistry (6 obras) · Geological and Geochemical Analysis (6 obras) · Geology (5 obras) · Geography (4 obras) · Geology (4 obras) · Paleontology (4 obras) · Tephrochronology (4 obras)