Upper Jurassic fossils from the Ruahine range (Note)

Punga, M. T. Te

doi:10.1080/00288306.1978.10425207

Cited by 4 publications

(3 citation statements)

References 2 publications

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“…However, good stratigraphic successions of >1000 m are rare, and no lithostratigraphic formations are recognised. Throughout the North Island Torlesse, fossil localities are rare, and most commonly indicate general Early Cretaceous to Late Jurassic ages, rare Triassic, and very rare Permian ages (Grant-Taylor & Waterhouse 1963;Stevens 1963;Webby 1967;Milne & Campbell 1969;Speden 1976;GrantMackie 1978;Te Punga 1978;Campbell 1982;Campbell et al 1993).…”

Section: °E 1ementioning

confidence: 99%

“…The only two fossil localities within Kaweka Terrane have yielded belemnites interpreted as Late Jurassic in age (Stevens 1963;Te Punga 1978), that is, no older than 157 ± 4 Ma. The ages of the youngest zircon peaks from samples within a few kilometres of the fossil localities are 169 ± 4 Ma (IKA1) and 183 ± 6 Ma (RUX2), but individual zircons in both these samples are of latest Middle Jurassic age.…”

mentioning

confidence: 99%

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Age and isotopic characterisation of metasedimentary rocks from the Torlesse Supergroup and Waipapa Group in the central North Island, New Zealand

Adams¹,

Mortimer²,

Campbell

et al. 2009

New Zealand Journal of Geology and Geophysics

103

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Sr ratios (at metamorphism) and detrital zircon patterns that in part are transitional between Rakaia and Pahau Terrane rocks and in part similar to Waipapa Terrane rocks. Combined detrital zircon age data for all Torlesse and Waipapa Terrane data reveal an essential unity, with a long persistence (260-120 Ma) of predominant Permian-Triassic sources in the form of a major Cordilleran-style batholith, a decline in major early Paleozoic-Precambrian sources between 260 and 220 Ma, and presence of minor Early Carboniferous to Late Devonian sources between 180 and 120 Ma. Rb-Sr and K-Ar ages indicate latest Triassic to Early Cretaceous metamorphism in an evolving accretionary wedge.

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Section: °E 1ementioning

confidence: 99%

mentioning

confidence: 99%

Age and isotopic characterisation of metasedimentary rocks from the Torlesse Supergroup and Waipapa Group in the central North Island, New Zealand

Adams¹,

Mortimer²,

Campbell

et al. 2009

New Zealand Journal of Geology and Geophysics

103

View full text Add to dashboard Cite

show abstract

“…In the past these cover rocks have been referred in part to the Te Waka Limestone (part of the Te Aute Limestone Facies) of Beu et al (1980), or informally as Opoitian and Waitotaran strata (Kingma, 1957a). The cover rocks are not given a formal stratigraphic nomenclature here, but they are similar to the Te Aute Group (Harsen, 1985 (Kingma, 1958(Kingma, , 1962Speden, 1976;Te Punga, 1978).…”

Section: Stratigraphymentioning

confidence: 99%

Basement-cover relationships and tectonic significance of Mt Miroroa, western Hawke's Bay

Browne¹

1986

Journal of the Royal Society of New Zealand

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At Mt Miroroa , indurated Mesozoic basement rocks have been faulted over Late Tertiary alternating marine sandstone, siltstone and pebbly limestone. The fault plane strikes NW-SE and dips at 45°SW. The younger sediments are flat lying to the north, but towards the Miroroa Fault they are steepened on the southern limb of an ESE trending syncline, and in places arc overturned. The 3 km long Miroroa Fault is truncated by the northeast-trending Ruahine and Comet Faults. Considerable deformation is evident above and below the Miroroa Fault, although the shear plane is only 5 cm thick. Topographically bclow but subparallel to the Miroroa Fault, several normal faults have raised horst wedges of basement rocks into the Late Tertiary strata.Conjugate minor fault couples immediately below the decollement indicate maximum principal stress to be low-angle and oriented NE-SW. Strain ellipsoids constructed from deformed fossils beneath the Miroroa Fault confirm this orientation. Conjugate faults within a 10 km radius north of the fault indicate NE-SW shortening directions with a subordinate easterly component.In terms of plate tectonic nomenclature, Mt Miroroa lies within the frontal ridge. Sites elsewhere in the frontal ridge of the North Island also indicate NE shortening. It is suggested that the Miroroa Fault either (1) began as a northwest trending normal fault, that was subsequently overturned to its present-day reverse geometry by continued NE-SW directed compression, or (2) developed as an en echelon or side stepping fault between the adjacent Cornet and Ruahine Faults.

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Two Mesozoic faunas from Torlesse melange terrane, (Ruahine Range), New Zealand, and new evidence for Oretian correlation

Marden¹,

Simes

Campbell

1987

New Zealand Journal of Geology and Geophysics

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Upper Jurassic fossils from the Ruahine range (Note)

Abstract: Belemnopsis keari Stevens and Pleuromya millejormis Marwick, collected from a transported boulder at Waipawa Forks, northern Ruahine Range, New Zealand, indicate a Heterian (LowerMiddle Kimmeridgian) age within the "Ruahine Greywacke Group" of Kingma.

Cited by 4 publications

References 2 publications

Age and isotopic characterisation of metasedimentary rocks from the Torlesse Supergroup and Waipapa Group in the central North Island, New Zealand

Age and isotopic characterisation of metasedimentary rocks from the Torlesse Supergroup and Waipapa Group in the central North Island, New Zealand

Basement-cover relationships and tectonic significance of Mt Miroroa, western Hawke's Bay

Two Mesozoic faunas from Torlesse melange terrane, (Ruahine Range), New Zealand, and new evidence for Oretian correlation

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