Morphology and history of the Kermadec trench–arc–backarc basin–remnant arc system at 30 to 32°S: geophysical profile, microfossil and K–Ar data

Ballance, Peter F.; Ablaev, Albert G.; Pushchin, Igor K; Плетнев, С. П.; Birylina, Maria G; Itaya, Tetsumaru; Follas, Harry A; Gibson, Graham W.

doi:10.1016/s0025-3227(98)00206-0

Cited by 58 publications

(66 citation statements)

References 57 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…The abundance of volcaniclastic material, dated as late Miocene in age, implies the presence of a single volcanic chain before this time (Ballance et al 1989). This single-arc system remained stable until rifting of the Lau Basin began at ∼7.8 Ma (Clift 1994;Ballance et al 1999), and the Havre Trough opened ∼5 Ma (Malahoff et al 1982;Clift et al 1994). Initiation of rifting in these backarc basins coincides with a peak in the generation of volcaniclastic material.…”

Section: G E O L O G I C a L S E T T I N Gmentioning

confidence: 95%

“…Initiation of rifting in these backarc basins coincides with a peak in the generation of volcaniclastic material. An ∼2 Myr regional hiatus in sedimentation followed this increased volcanic output (Clift 1994;Ballance et al 1999). Tectonic erosion of the overriding plate has progressively extended and depressed the Tonga forearc by ∼280 per cent and ∼6 km, respectively since the Miocene MacLeod 1994).…”

Section: G E O L O G I C a L S E T T I N Gmentioning

confidence: 97%

“…• ) and highly irregular basement with little sediment cover characterizes the inner-trench slope (Karig 1970;Ballance et al 1999). Poor sedimentation of the trench and inner slope is a consequence of reduced sediment transport, which results from sediment ponding in basins located higher up on the forearc (Dickinson & Seely 1979).…”

Section: Downloaded Frommentioning

confidence: 99%

“…Mid-slope terraces, for example, act as effective sediment traps and are located along the length of the Tonga-Kermadec forearc at ∼5-6 km water depth (e.g. Brodie & Hatherton 1958;Karig 1970;Ballance et al 1999). Extension in the lower-and middle-trench slopes has been inferred from the presence of normal faults observed in cores at ODP Site 841 (Fig.…”

Section: Downloaded Frommentioning

confidence: 99%

“…There is a coincident 10 km westward step in the forearc (Pelletier & Dupont 1990), together with significant increases in the depth and narrowing of the midslope terrace (Ballance et al 1999). An increase in the dip angle of the subducting plate is thought to cause these variations that, in turn, progressively rotate the forearc trenchward (Ballance et al 1999). This 32…”

Section: Downloaded Frommentioning

confidence: 99%

See 4 more Smart Citations

Structure and deformation of the Kermadec forearc in response to subduction of the Pacific oceanic plate

Funnell¹,

Peirce²,

Stratford³

et al. 2014

Geophysical Journal International

View full text Add to dashboard Cite

Section: G E O L O G I C a L S E T T I N Gmentioning

confidence: 95%

Section: G E O L O G I C a L S E T T I N Gmentioning

confidence: 97%

Section: Downloaded Frommentioning

confidence: 99%

Section: Downloaded Frommentioning

confidence: 99%

Section: Downloaded Frommentioning

confidence: 99%

See 3 more Smart Citations

Structure and deformation of the Kermadec forearc in response to subduction of the Pacific oceanic plate

Funnell¹,

Peirce²,

Stratford³

et al. 2014

Geophysical Journal International

View full text Add to dashboard Cite

Crustal structure of the Kermadec arc from MANGO seismic refraction profiles

et al. 2016

View full text Add to dashboard Cite

Three active‐source seismic refraction profiles are integrated with morphological and potential field data to place the first regional constraints on the structure of the Kermadec subduction zone. These observations are used to test contrasting tectonic models for an along‐strike transition in margin structure previously known as the 32°S boundary. We use residual bathymetry to constrain the geometry of this boundary and propose the name Central Kermadec Discontinuity (CKD). North of the CKD, the buried Tonga Ridge occupies the fore‐arc with VP 6.5–7.3 km s−1 and residual free‐air gravity anomalies constrain its latitudinal extent (north of 30.5°S), width (110 ± 20 km), and strike (~005° south of 25°S). South of the CKD the fore‐arc is structurally homogeneous downdip with VP 5.7–7.3 km s−1. In the Havre Trough back‐arc, crustal thickness south of the CKD is 8–9 km, which is up to 4 km thinner than the northern Havre Trough and at least 1 km thinner than the southern Havre Trough. We suggest that the Eocene arc did not extend along the current length of the Tonga‐Kermadec trench. The Eocene arc was originally connected to the Three Kings Ridge, and the CKD was likely formed during separation and easterly translation of an Eocene arc substrate during the early Oligocene. We suggest that the first‐order crustal thickness variations along the Kermadec arc were inherited from before the Neogene and reflect Mesozoic crustal structure, the Cenozoic evolution of the Tonga‐Kermadec‐Hikurangi margin and along‐strike variations in the duration of arc volcanism.

show abstract

Seismic stratigraphy and structure of the Northland Plateau and the development of the Vening Meinesz transform margin, SW Pacific Ocean

et al. 2009

View full text Add to dashboard Cite

Morphology and history of the Kermadec trench–arc–backarc basin–remnant arc system at 30 to 32°S: geophysical profile, microfossil and K–Ar data

Cited by 58 publications

References 57 publications

Structure and deformation of the Kermadec forearc in response to subduction of the Pacific oceanic plate

Structure and deformation of the Kermadec forearc in response to subduction of the Pacific oceanic plate

Crustal structure of the Kermadec arc from MANGO seismic refraction profiles

Seismic stratigraphy and structure of the Northland Plateau and the development of the Vening Meinesz transform margin, SW Pacific Ocean

Contact Info

Product

Resources

About