English: Approximate extent of ignambrite sheets from Kidnappers (yellow) and Rocky Hill eruptions (orange) as determined from land drill cores sampling. The Kidnappers ignambrite has been reported in some cores from just beyond the boundaries shown and this map only tries to show where there was full coverage of the then existing landforms and present land surface to convey an idea of the minimal total biosphere disruption.
(1998). "Petrography and geochemistry of lithic fragments in ignimbrites from the Mangakino Volcanic Centre: implications for the composition of the subvolcanic crust in western Taupo Volcanic Zone, New Zealand". New Zealand Journal of Geology and Geophysics41 (2): 187–199. DOI:10.1080/00288306.1998.9514803.
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