scholarly journals Diffusion-zoned pyroxenes in an isotopically heterogeneous mantle lithosphere beneath the Dunedin Volcanic Group, New Zealand, and their implications for intraplate alkaline magma sources

Lithosphere ◽  
2017 ◽  
Vol 9 (3) ◽  
pp. 463-475 ◽  
Author(s):  
Hayden B. Dalton ◽  
James M. Scott ◽  
Jingao Liu ◽  
Tod E. Waight ◽  
D. Graham Pearson ◽  
...  
Keyword(s):  
New Zealand ◽  
Mantle Lithosphere ◽  
Alkaline Magma ◽  
Volcanic Group ◽  
Magma Sources ◽  
Heterogeneous Mantle

scholarly journals Slab tear as a cause of coeval arc-intraplate volcanism in the Alexandra Volcanic Group, New Zealand

Lithos ◽  
2021 ◽  
pp. 106564
Author(s):  
O.E. McLeod ◽  
M. Brenna ◽  
R.M. Briggs ◽  
A. Pittari
Keyword(s):  
New Zealand ◽  
Intraplate Volcanism ◽  
Volcanic Group ◽  
Slab Tear

Geochronology and geochemistry of the Dunedin Volcanic Group, eastern Otago, New Zealand

2008 ◽  
Vol 51 (3) ◽  
pp. 195-218 ◽  
Author(s):  
Douglas S. Coombs ◽  
Christopher J. Adams ◽  
Barry P. Roser ◽  
Anthony Reay
Keyword(s):  
New Zealand ◽  
Volcanic Group

Continuous Deformation Versus Faulting Through the Continental Lithosphere of New Zealand

Science ◽  
1999 ◽  
Vol 286 (5439) ◽  
pp. 516-519 ◽  
Author(s):  
Peter Molnar ◽  
Helen J. Anderson ◽  
Etienne Audoine ◽  
Donna Eberhart-Phillips ◽  
Ken R. Gledhill ◽  
...  
Keyword(s):  
New Zealand ◽  
Seismic Anisotropy ◽  
Plate Motion ◽  
Plate Boundaries ◽  
Mantle Lithosphere ◽  
Continental Lithosphere ◽  
Continuous Deformation ◽  
Alpine Fault ◽  
Wave Splitting ◽  
Rule Out

Seismic anisotropy and P-wave delays in New Zealand imply widespread deformation in the underlying mantle, not slip on a narrow fault zone, which is characteristic of plate boundaries in oceanic regions. Large magnitudes of shear-wave splitting and orientations of fast polarization parallel to the Alpine fault show that pervasive simple shear of the mantle lithosphere has accommodated the cumulative strike-slip plate motion. Variations inP-wave residuals across the Southern Alps rule out underthrusting of one slab of mantle lithosphere beneath another but permit continuous deformation of lithosphere shortened by about 100 kilometers since 6 to 7 million years ago.

Chapter 5 Correlations between a heterogeneous mantle and multiple stages of crustal growth: a review of the Dun Mountain ophiolite, New Zealand

10.1144/m49.3 ◽  
2019 ◽  
Vol 49 (1) ◽  
pp. 75-92 ◽  
Author(s):  
D. Jugum ◽  
E. Stewart ◽  
J. M. Palin ◽  
N. Mortimer ◽  
R. J. Norris ◽  
...  
Keyword(s):  
New Zealand ◽  
Crustal Growth ◽  
Heterogeneous Mantle ◽  
Multiple Stages
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