Tectonic controls on Miocene sedimentation in the Southern Taranaki Basin and implications for New Zealand plate boundary deformation

2019 ◽  
Vol 31 (2) ◽  
pp. 253-273 ◽  
Author(s):  
Suzanne Bull ◽  
Andrew Nicol ◽  
Dominic Strogen ◽  
Karsten F. Kroeger ◽  
Hannu S. Seebeck
Keyword(s):  
New Zealand ◽  
Plate Boundary ◽  
Plate Boundary Deformation ◽  
Boundary Deformation

Highly localized upper mantle deformation during plate boundary initiation near the Alpine fault, New Zealand

Geology ◽  
2021 ◽  
Author(s):  
Steven Kidder ◽  
David J. Prior ◽  
James M. Scott ◽  
Hamid Soleymani ◽  
Yilun Shao
Keyword(s):  
New Zealand ◽  
Upper Mantle ◽  
Plate Boundary ◽  
New Approach ◽  
Fine Grained ◽  
Alpine Fault ◽  
Narrow Width ◽  
Plate Boundary Deformation ◽  
Boundary Deformation ◽  
Total Shear

Peridotite xenoliths entrained in magmas near the Alpine fault (New Zealand) provide the first direct evidence of deformation associated with the propagation of the Australian-Pacific plate boundary through the region at ca. 25–20 Ma. Two of 11 sampled xenolith localities contain fine-grained (40–150 mm) rocks, indicating that deformation in the upper mantle was focused in highly sheared zones. To constrain the nature and conditions of deformation, we combine a flow law with a model linking recrystallized fraction to strain. Temperatures calculated from this new approach (625–970 °C) indicate that the observed deformation occurred at depths of 25–50 km. Calculated shear strains were between 1 and 100, which, given known plate offset rates (10–20 mm/yr) and an estimated interval during which deformation likely occurred (<1.8 m.y.), translate to a total shear zone width in the range 0.2–32 km. This narrow width and the position of mylonite-bearing localities amid mylonite-free sites suggest that early plate boundary deformation was distributed across at least ~60 km but localized in multiple fault strands. Such upper mantle deformation is best described by relatively rigid, plate-like domains separated by rapidly formed, narrow mylonite zones.

Evolution of faulting and plate boundary deformation in the Southern Taranaki Basin, New Zealand

2015 ◽  
Vol 651-652 ◽  
pp. 1-18 ◽  
Author(s):  
Cathal Reilly ◽  
Andrew Nicol ◽  
John J. Walsh ◽  
Hannu Seebeck
Keyword(s):  
New Zealand ◽  
Plate Boundary ◽  
Plate Boundary Deformation ◽  
Boundary Deformation

scholarly journals S-wave splitting in the offshore South Island, New Zealand: Insights into plate-boundary deformation

2015 ◽  
Vol 16 (9) ◽  
pp. 2829-2847 ◽  
Author(s):  
S. C. Karalliyadda ◽  
M. K. Savage ◽  
A. Sheehan ◽  
J. Collins ◽  
D. Zietlow ◽  
...  
Keyword(s):  
New Zealand ◽  
Plate Boundary ◽  
S Wave ◽  
Wave Splitting ◽  
Plate Boundary Deformation ◽  
Boundary Deformation

Regional intraplate exhumation episodes related to plate-boundary deformation

2009 ◽  
Vol 121 (11-12) ◽  
pp. 1611-1628 ◽  
Author(s):  
Simon P. Holford ◽  
Paul F. Green ◽  
Ian R. Duddy ◽  
Jonathan P. Turner ◽  
Richard R. Hillis ◽  
...  
Keyword(s):  
Plate Boundary ◽  
Plate Boundary Deformation ◽  
Boundary Deformation
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