File:Whakamaru.Eruption.jpg
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Summary
DescriptionWhakamaru.Eruption.jpg |
English: The approximate immediate impact of the Whakamaru Caldera (red shading) eruptions of about 335,000 years before present. It must be emphasised that it is very challenging to define boundaries but proven deep sea core samples and land samples with discontinuities were used in this original work that incorporates data from multiple sources. Multiple other sources are consistent with those used in the annotations but there has been much extrapolation. Light white shading shows where 10cm or more tephra detected noting that for example 25cm tephra is found against prevailing wind patterns well to north west of present New Zealand and 10cm south east of Banks Peninsular suggesting multiple significant events contributed. Similarly the light yellow shading does not consider all discontinuities but rather assumes that most discontinuities are due to subsequent erosion rather than landforms of this long ago which is likely incorrect but from biosphere impact likely not significantly so (ie effective sterilisation in yellow shaded areas of all higher life forms) |
Date | |
Source | Own work |
Author | ChaseKiwi |
Annotations based on:
- (2012). "Ultra-distal Tephra Deposits from Supereruptions:Examples from Toba and New Zealand". Quaternary International 258: 54–79. DOI:10.1016/j.quaint.2011.07.010.
- Leonard, Graham S. (2003) The evolution of Maroa Volcanic Centre, Taupo Volcanic Zone, New Zealand (Thesis)[1], University of Canterbury
- Froggatt, P. C. (13 February 1986). "An exceptionally large late Quaternary eruption from New Zealand". Nature 319 (6054): 578–582. DOI:10.1038/319578a0. Retrieved on 2022-05-15.
This image is a derivative work of the following images:
- File:Satellite image of New Zealand in December 2002.jpg
- File:Maroa.Caldera.Rift.Zone.North.Island.NZ.jpg
Public domainPublic domainfalsefalse |
This image is in the public domain because it is a screenshot from NASA’s globe software World Wind using a public domain layer, such as Blue Marble, MODIS, Landsat, SRTM, USGS or GLOBE.
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Date/Time | Thumbnail | Dimensions | User | Comment | |
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current | 09:57, 4 September 2022 | 1,100 × 1,450 (472 KB) | ChaseKiwi | Uploaded while editing "Whakamaru Caldera" on wiki.riteme.site |
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JPEG file comment | Approximate immediate impact of Whakamaru eruptions. Caldera is red shading, pale yellow ignimbrite distribution and pale white shading 10cm tephra |
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Orientation | Normal |
Horizontal resolution | 72 dpi |
Vertical resolution | 72 dpi |
Software used | GIMP 2.10.24 |
File change date and time | 10:53, 4 September 2022 |
Color space | sRGB |
Unique ID of original document | xmp.did:717eba42-6389-4066-b728-48f9e49f701f |
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