New insights into the origin and evolution of the Hikurangi oceanic plateau

Hoernle, Kaj; Hauff, Folkmar; Werner, Reinhard; Mortimer, N.

doi:10.1029/2004eo410001

Cited by 26 publications

(38 citation statements)

References 10 publications

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“…Similarly the volcanic ages of such a plume appear to be very widespread. Hoernle et al [2004] have dated Hikurangi Plateau formation at $110-120 Ma, possibly as part of a larger combined Manihiki-Hikurangi Plateau $1000 km north of its present location. Subduction cessation beneath the Chatham Rise Gondwana margin in the Late Cretaceous halted the southward passage of the Hikurangi Plateau.…”

Section: Discussionmentioning

confidence: 99%

“…Subduction cessation beneath the Chatham Rise Gondwana margin in the Late Cretaceous halted the southward passage of the Hikurangi Plateau. Late phase volcanism 90 -100 Ma on the plateau [Hoernle et al, 2004] can be compared with Storey et al [1999] and Weaver et al [1994] who have proposed a mantle plume source for $107 Ma alkaline Cretaceous dikes formed in Marie Byrd Land. Initiation of rifting and subsequent seafloor spreading between New Zealand and Antarctica appears related principally to the subduction of the Hikurangi Plateau beneath the Gondwana convergent margin and the subsequent accommodation of extensional forces south of the Chatham Rise [Davy, 2004].…”

Section: Discussionmentioning

confidence: 99%

“…Swath bathymetry and seismic reflection data [Davy, 1993;Hoernle et al, 2004] identified the isolated gravity highs as a mixture of crustal basement blocks and volcanics. Seismic reflection data [Carter et al, 1994; New Zealand U.N. Project, unpublished data, 2001] indicate the highs occur within a terrace of block-faulted basement.…”

Section: Introductionmentioning

confidence: 99%

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Bollons Seamount and early New Zealand–Antarctic seafloor spreading

Davy

2006

Geochem Geophys Geosyst

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[1] Magnetic anomaly, swath bathymetry and gravity data from the southern Chatham Rise to Bollons Seamount region reveal a history of Cretaceous seafloor spreading in the mouth of the Bounty Trough starting at $85 Ma followed by spreading ridge jumps back to the Marie Byrd Land Margin at 83.7 and 78.5 Ma. The latter ridge jump accompanied the rifting of the Bollons Seamount from the Marie Byrd Land margin. Interpreted magnetic anomalies indicate a pattern of highly asymmetric spreading prior to 78 Ma that varied in bias along the margin on a $100 km length scale. Crustal thickening within the $50 km Bollons Gap linking the Bollons Seamount to the Campbell Plateau is interpreted to be due to excess volcanism associated with the initial rifting-seafloor spreading process and possible thinned continental crust. The elevated 200 km long segment of Antipodes Fracture Zone southeast of Bollons Seamount has been exposed to varying styles of ridge end volcanism and possible normal compression associated with the development during chron 32n.2n of a triple junction at its southeastern limit marking the Bellingshausen-Marie Byrd Land plate boundary.

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Section: Discussionmentioning

confidence: 99%

Section: Discussionmentioning

confidence: 99%

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Bollons Seamount and early New Zealand–Antarctic seafloor spreading

Davy

2006

Geochem Geophys Geosyst

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“…On the basis of swath bathymetry and other underway geophysical data from the Hikurangi Plateau, Hoernle et al (2004) identify several major stages of volcanism in its history: first, overall plateau growth; second, late-stage isolated volcanic cones; third, intrusions along normal faults that accommodated the separation of the Hikurangi Plateau from the Manihiki Plateau. Their model requires the surface of the Hikurangi Plateau to subside from near sea level to about 1,500 m water depth before the eruption of the late-stage volcanoes, and prior to the separation of the Hikurangi and Manihiki Plateaus.…”

Section: Discussionmentioning

confidence: 99%

“…Recent observations of the Hikurangi Plateau adjacent and east of New Zealand (Hoernle et al 2004) are also relevant to the interpretation of the Manihiki Plateau area, because of the proposed original connection between the two plateaus prior to rifting along the seafloor spreading system that formed the Osbourn Trough (Lonsdale 1997;Billen and Stock 2000). On the basis of swath bathymetry and other underway geophysical data from the Hikurangi Plateau, Hoernle et al (2004) identify several major stages of volcanism in its history: first, overall plateau growth; second, late-stage isolated volcanic cones; third, intrusions along normal faults that accommodated the separation of the Hikurangi Plateau from the Manihiki Plateau.…”

Section: Discussionmentioning

confidence: 99%

Vertical tectonics of the High Plateau region, Manihiki Plateau, Western Pacific, from seismic stratigraphy

Stock

Clayton

et al. 2008

Mar Geophys Res

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The Manihiki Plateau is an elevated oceanic volcanic plateau that was formed mostly in Early Cretaceous time by hotspot activity. We analyze new seismic reflection data acquired on cruise KIWI 12 over the High Plateau region in the southeast of the plateau, to look for direct evidence of the location of the heat source and the timing of uplift, subsidence and faulting. These data are correlated with previous seismic reflection lines from cruise CATO 3, and with the results at DSDP Site 317 at the northern edge of the High Plateau. Seven key reflectors are identified from the seismic reflection profiles and the resulting isopach maps show local variations in thickness in the southeastern part of the High Plateau, suggesting a subsidence (cooling) event in this region during Late Cretaceous and up to Early Eocene time. We model this as a hotspot, active and centered on the High Plateau area during Early Cretaceous time in a near-ridge environment. The basement and Early Cretaceous volcaniclastic layers were formed by subaerial and shallow-water eruption due to the volcanic activity. After that, the plateau experienced erosion. The cessation of hotspot activity and subsequent heat loss by Late Cretaceous time caused the plateau to subside rapidly. The eastern and southern portions of the High Plateau were rifted away following the cessation of hot spot activity. As the southeastern portion of the High Plateau was originally higher and above the calcium carbonate compensation depth, it accumulated more sediments than the surrounding plateau regions. Apparently coeval with the rapid subsidence of the plateau are normal faults found at the SE edge of the plateau. Since Early Eocene time, the plateau subsided to its present depth without significant deformation.

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The Manihiki Plateau—A multistage volcanic emplacement history

Pietsch

Uenzelmann-Neben

2015

Geochem Geophys Geosyst

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The formation history of the Manihiki Plateau, a Large Igneous Province, is poorly understood.New high-resolution seismic reflection data across the High Plateau, the largest edifice of the Manihiki Plateau, provide evidence for multistage magmatic emplacement. Improved data quality allows for an identification of an earlier volcanic phase, the initial formation phase (>125 Ma), in addition to the previously known volcanic formation phases: the expansion phase (125-116) formerly called main-phase, and the secondary volcanic phase (100-65 Ma). This enhances the understanding of the emplacement scenario. An intrabasement reflection band IB1 reveals the end of initial volcanic formation and forms the nucleus of the High Plateau. This feature provides indications that it continued beyond the Manihiki Scarp and thus supports the hypothesis of an extension of the Manihiki Plateau to the East during the initial formation and expansion phases. The expansion phase is characterized by massive volcanic outpourings leveling and extending the basement throughout the High Plateau and the neighboring Western Plateaus, which in contrast shows massive tectonic alteration. Extrusion centers formed within the secondary volcanic phase (ending 65 Ma) are mainly concentrated along the margins of the High Plateau, suggesting the magmatic sources shifted from those being related to the initial emplacement and expansion phases of the High Plateau to induced volcanism at the tectonically altered margins.

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New insights into the origin and evolution of the Hikurangi oceanic plateau

Cited by 26 publications

References 10 publications

Bollons Seamount and early New Zealand–Antarctic seafloor spreading

Bollons Seamount and early New Zealand–Antarctic seafloor spreading

Vertical tectonics of the High Plateau region, Manihiki Plateau, Western Pacific, from seismic stratigraphy

The Manihiki Plateau—A multistage volcanic emplacement history

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