Pleistocene volcanic eruptions in New Zealand recorded in deep-sea sediments

Ninkovich, Dragoslav

doi:10.1016/0012-821x(68)90001-0

Cited by 81 publications

(41 citation statements)

References 7 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Rhyolitic volcanic glass seems to be more widely distributed than [30][31][2][3][4][22][23] basaltic glass. For example, Ninkovich (1968) correlated deep sea ashes with those on land in the New Zealand Taup-Rotorua area. In his data on acidic and basic tephra, volcanic glass distribution depends mainly on its chemical composition.…”

Section: Discussionmentioning

confidence: 99%

See 1 more Smart Citation

Petrography and Geochemistry of Volcanic Glass: Leg 57, Deep Sea Drilling Project

Fujioka¹,

Furuta²,

Arai³

1980

Initial Reports of the Deep Sea Drilling Project

View full text Add to dashboard Cite

About 200 volcanic ash layers were recovered during DSDP Leg 57. The volcanic glass in some of these layers was investigated petrographically and chemically in this study. Volcanic glass is mainly rhyolitic and/or rhyodacitic in chemical composition, and its refractive index ranges from 1.496 to 1.529. Some volcanic ash layers consist of multiple grains of different chemical compositions. All the volcanic glass belongs to the tholeiitic and the calc-alkalic volcanic rock series, in SiO->-

show abstract

Section: Discussionmentioning

confidence: 99%

“…Several investigators have successfully correlated deep sea tephra layers with source volcanic rocks on land (Ninkovich, 1968;Ninkovich & Shackleton, 1975;Keller et al, 1978). Although deep sea tephra is several hundred or more km from the source volcanic rocks, it is correctable using diagnostic features of volcanic ash.…”

Section: Tephra Correlationmentioning

confidence: 99%

Petrography and Geochemistry of Volcanic Glass: Leg 57, Deep Sea Drilling Project

Fujioka¹,

Furuta²,

Arai³

1980

Initial Reports of the Deep Sea Drilling Project

View full text Add to dashboard Cite

show abstract

“…AirfalJ members associated with the ignimbrites are widespread and provide useful horizons for correlation and dating in Late Cenozoic sediments of the Wanganui and Wairarapa Basins (Seward 1976) and in deep-sea cores of the New Zealand coast (Ninkovich 1968).…”

Section: Ignimbrite Sheetsmentioning

confidence: 99%

Structure, petrology, and genesis of Cenozoic volcanism, Taupo Volcanic Zone, New Zealand—a review

Cole

1979

New Zealand Journal of Geology and Geophysics

141

View full text Add to dashboard Cite

“…The composition of the sediments in the study area shows clearly that there has been a massive influx of volcaniclastic sediment from New Zealand, the Tonga-Kermadec island are, and Samoa (Ninkovich 1968;Ewart et al 1977;Watkins & Huang 1977;Kennett 19S1). Volcanic ash is the most common sediment type up to 650 km east of the island arc, and for tens of kilometres around the islands of the Samoan chain (Fig.…”

Section: Discussionmentioning

confidence: 96%

Lithology, colour, mineralogy, and geochemistry of marine sediments from the Southwestern Pacific and Samoan Basins

Meylan

Glasby

McDougall

et al. 1982

New Zealand Journal of Geology and Geophysics

View full text Add to dashboard Cite

The principal facies of the surface sediments of the Southwestern Pacific and Samoan Basins have been characterised by differences in colour, grain size, lithology, mineralogy, and chemical composition, based on 77 dredge and grab samples collected during 2 cruises of the NZOI research vessel RV Tangaroa.Light-coloured foram/nannofossil oozes mixed with coarse volcaniclastics (pumice, ash) occupy the relatively shallow seafloor areas near volcanoes of New Zealand, the Tonga-Kermadec island are, Samoan chain, and Cook Islands. Up to several hundred kilometres east of the North Island of New Zealand and the Tonga-Kermadec volcanoes, volcaniclastics are the dominant sediment component, being mixed with increasing amounts of clay minerals eastward. In the western part of the Samoan Basin, and the area immediately to the south, a siliceous microfossil (mostly radiolarian) hash ooze is found, probably containing volcanic ash. The siliceous ooze and ash-rich sediments are mostly grey coloured. The sediment changes gradationally in character eastward as microfossil and/or ash content decreases. It becomes darker in colour, finer grained, and contains higher concentrations of Mn, Ni, Cu, and Co. The dominant sediment of the eastern sector of the study area is a Received 14 January 1982, accepted 16 September 1982 brown to dark brown detrital silt-bearing, RSObearing to RSO-rich clay. Manganese nodules are principally associated with this sediment facies. The eastward changes in sediment character are interpreted as the result of a decreasing sedimentation rate.

show abstract

Pleistocene volcanic eruptions in New Zealand recorded in deep-sea sediments

Cited by 81 publications

References 7 publications

Petrography and Geochemistry of Volcanic Glass: Leg 57, Deep Sea Drilling Project

Petrography and Geochemistry of Volcanic Glass: Leg 57, Deep Sea Drilling Project

Structure, petrology, and genesis of Cenozoic volcanism, Taupo Volcanic Zone, New Zealand—a review

Lithology, colour, mineralogy, and geochemistry of marine sediments from the Southwestern Pacific and Samoan Basins

Contact Info

Product

Resources

About