ORCID Profile
0000-0002-5889-1665
Current Organisations
GEOMAR Helmholtz Centre for Ocean Research Kiel
,
GNS Science Ltd
Does something not look right? The information on this page has been harvested from data sources that may not be up to date. We continue to work with information providers to improve coverage and quality. To report an issue, use the Feedback Form.
Publisher: Springer Science and Business Media LLC
Date: 17-09-2014
DOI: 10.1038/NCOMMS5923
Abstract: Large igneous province subduction is a rare process on Earth. A modern ex le is the subduction of the oceanic Hikurangi Plateau beneath the southern Kermadec arc, offshore New Zealand. This segment of the arc has the largest total lava volume erupted and the highest volcano density of the entire Kermadec arc. Here we show that Kermadec arc lavas south of ~32°S have elevated Pb and Sr and low Nd isotope ratios, which argues, together with increasing seafloor depth, forearc retreat and crustal thinning, for initial Hikurangi Plateau-Kermadec arc collision ~250 km north of its present position. The combined data set indicates that a much larger portion of the Hikurangi Plateau (the missing Ontong Java Nui piece) than previously believed has already been subducted. Oblique plate convergence caused southward migration of the thickened and buoyant oceanic plateau crust, creating a buoyant 'Hikurangi' mélange beneath the Moho that interacts with ascending arc melts.
Publisher: Oxford University Press (OUP)
Date: 07-2016
Publisher: Informa UK Limited
Date: 02-10-2014
Publisher: Geological Society of London
Date: 16-08-2018
DOI: 10.1144/SP463.9
Publisher: Springer Science and Business Media LLC
Date: 08-01-2014
DOI: 10.1038/NCOMMS4060
Publisher: Springer Science and Business Media LLC
Date: 16-04-2013
DOI: 10.1038/NCOMMS2702
Abstract: Subduction of intraplate seamounts beneath a geochemically depleted mantle wedge provides a seldom opportunity to trace element recycling and mantle flow in subduction zones. Here we present trace element and Sr, Nd and Pb isotopic compositions of lavas from the central Tonga-Kermadec arc, west of the contemporary Louisville-Tonga trench intersection, to provide new insights into the effects of Louisville seamount subduction. Elevated (206)Pb/(204)Pb, (208)Pb/(204)Pb, (86)Sr/(87)Sr in lavas from the central Tonga-Kermadec arc front are consistent with localized input of subducted alkaline Louisville material (lavas and volcaniclastics) into sub-arc partial melts. Furthermore, absolute Pacific Plate motion models indicate an anticlockwise rotation in the subducted Louisville seamount chain that, combined with estimates of the timing of fluid release from the subducting slab, suggests primarily trench-normal mantle flow beneath the central Tonga-Kermadec arc system.
Publisher: American Geophysical Union (AGU)
Date: 08-2011
DOI: 10.1029/2011GC003654
Publisher: Society of Economic Geologists
Date: 23-11-2012
Publisher: Elsevier BV
Date: 02-2020
Publisher: Springer Science and Business Media LLC
Date: 28-06-2017
Publisher: Elsevier BV
Date: 04-2011
Location: Brazil
Location: No location found
No related grants have been discovered for Christian Timm.