Outcrop and Seismic Examples of Mass-Transport Deposits from a Late Miocene Deep-Water Succession, Taranaki Basin, New Zealand

King, Peter R.; Ilg, Bradley R.; Arnot, Malcolm J.; Browne, Greg H.; Strachan, Lorna J.; Crundwell, Martin P.; Helle, K.

doi:10.2110/sepmsp.096.311

Cited by 21 publications

(35 citation statements)

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“…The higher sedimentation rates are compatible with the interpreted slope and base-of-slope paleo-environments and overall progradation of the depositional system (King et al 1993. High sedimentation rates likely contributed to slope destabilisation and mass wasting commonly observed within middlelate Miocene Taranaki Basin deposits (Utley 1987;Nodder et al 1990;King et al 1993King et al , 2011Browne et al 2006;Sharman et al 2015). It is possibly no coincidence that the largest mass-transport interval within the studied succession lies just beneath the inferred change in sedimentation rates.…”

Section: Sedimentation Ratesmentioning

confidence: 81%

“…Intervals of mass-transport deposits, at bed-to seismic-scale, occur throughout the depositional succession (King et al 1993(King et al , 2011Browne et al 2006;Sharman et al 2015).…”

Section: Regional Geologymentioning

confidence: 99%

“…Paradoxically, although the strata exposed along the north Taranaki coastal cliff section have been studied for decades, their correlation and dating have been problematic. This is partly because of stratigraphic uncertainty created by the presence of syndepositional mass-transport deposits (MTDs) and post-depositional normal faults with unknown offsets in various parts of the section (King et al 1993(King et al , 2011Hansen 1996). Additionally, various workers have used different criteria to determine biostratigraphic events (e.g.…”

Section: Introductionmentioning

confidence: 99%

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Refined depositional history and dating of the Tongaporutuan reference section, north Taranaki, New Zealand: new volcanic ash U–Pb zircon ages, biostratigraphy and sedimentation rates

Maier

Crundwell

Coble

et al. 2016

New Zealand Journal of Geology and Geophysics

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This study presents new radiometric ages from volcanic ash beds within a c. 1900 m thick, progradational, deep-water clastic slope succession of late Miocene age exposed along the north Taranaki coast of the North Island, New Zealand. The ash beds yield U-Pb zircon ages ranging from 10.63 ± 0.65 Ma to 8.97 ± 0.22 Ma. The new ages are compatible with and provide corroboration of New Zealand Tongaporutuan Stage planktic foraminiferal and bolboformid biostratigraphic events identified in the same section. The close accord between these two age datasets provides a stratigraphically consistent and coherent basis for examining margin evolution. The arrival of a prograding clastic wedge and ensuing upward shoaling is recorded by sedimentation rates c. 2000 m/Ma -1 that are an order of magnitude higher than sedimentation rates on the precursor deep basin floor. This outcrop study provides new constraints for interpreting analogous subsurface deposits in Taranaki Basin and complements the regional late Miocene biostratigraphic dating framework. ARTICLE HISTORY

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Section: Sedimentation Ratesmentioning

confidence: 81%

“…Intervals of mass-transport deposits, at bed-to seismic-scale, occur throughout the depositional succession (King et al 1993(King et al , 2011Browne et al 2006;Sharman et al 2015).…”

Section: Regional Geologymentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

Refined depositional history and dating of the Tongaporutuan reference section, north Taranaki, New Zealand: new volcanic ash U–Pb zircon ages, biostratigraphy and sedimentation rates

Maier

Crundwell

Coble

et al. 2016

New Zealand Journal of Geology and Geophysics

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“…It is also used to compare estimates of ages and sedimentation rates with those based on a bulk sediment-accumulation scale. The stratigraphic interval that the study focuses on was deposited during a period when the supply of siliciclastic sediment from the eroding hinterland was increasing, and contributed to a major phase of turbidite deposition and slope progradation along the deforming eastern Taranaki Basin margin (King et al 1993(King et al , 1994(King et al , 2007(King et al , 2011King and Thrasher 1996;Browne et al 2000).…”

Section: Case Studymentioning

confidence: 99%

A New Method For Interpolating Ages Between Calibrated Control Points Based On Foraminiferal Concentrations

Crundwell

2016

Journal of Sedimentary Research

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The new method relies on the assumption that foraminiferal accumulation rates are uniform, or are at least steadier than bulk sediment accumulation rates, over the time scale of intervals between calibrated control points. Where this condition is fulfilled, interpolated ages can be assigned to sampled horizons (n) in each age-bracketed interval by apportioning the difference in ages between control points at the bottom and top of each age-bracketed interval (Dt), to samples in each interval. This is done on the basis of the proportional subdivision of the sum total of weight-standardized counts of foraminifera (Cn) in each interval, which can be simply expressed as Dt*(Cn/ P Cn). The new method is described here in relation to well (cuttings) samples, but it can be adapted for use with whole-rock samples from cores and outcrops. A case study of the Pukearuhe-1 well demonstrates the method, its application, and outputs in relation to deep-water Miocene-age strata, in Taranaki Basin, New Zealand. The study of this well shows that foraminiferal accumulation rates may not be a precise guide for elapsed time, but in tectonically active basins, and in settings on the margins of basins where foraminiferal concentrations can be shown to be regulated by influxes of siliciclastic sediment, it is better to interpolate ages between calibrated control points on the basis of a uniform foraminiferal-accumulation scale than a uniform bulk sediment-accumulation scale.

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“…This paper aims to document the internal architecture, kinematic history, and spatial patterns of deformation within a seismic-scale MTD that is spectacularly exposed for ~11 km along the northern Taranaki coastline of New Zealand, referred to here as the North Awakino mass-transport deposit (NAMTD) (King et al, 2011;Fig. 1).…”

Section: Introductionmentioning

confidence: 99%

Spatial patterns of deformation and paleoslope estimation within the marginal and central portions of a basin-floor mass-transport deposit, Taranaki Basin, New Zealand

et al. 2015

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This study describes the character of submarine mass movement and associated deformation as revealed by an exceptionally well-exposed portion of a seismic-scale masstransport deposit (MTD) within the upper Miocene Mohakatino Formation (Taranaki Basin, New Zealand). The North Awakino MTD is at least 55 m thick and crops out along the northern Taranaki coastline for ~11 km in wave-cut platforms and in cliffs as much as 100 m high. Spectacular softsediment deformation features are developed in remobilized sediment gravity fl ow deposits that initially accumulated within a lowgradient intraslope basin. Sedimentary facies within the North Awakino MTD comprise laterally extensive, thick-to thin-bedded volcaniclastic sandstone and mudstone. Distinct postdepositional deformation styles are associated with bedding type: folds developed in thick-bedded sandstone are larger (fold heights to tens of meters) and more laterally continuous (to 1 km) than those developed in thinner bedded facies.Regional geologic relationships suggest that nearly the full width of the North Awakino MTD is exposed in outcrop, providing a rare opportunity to observe lateral relationships between the marginal and central portions of the MTD. We conducted a rigorous paleoslope analysis of slump fold, fault, and bedding orientations using both existing and newly proposed methodologies. Separate analysis of seven subregions within the North Awakino MTD reveals that the predicted MTD transport direction varies widely along the outcrop extent. Most notably, slump folds and faults within the inferred margins have mean orientations that are suborthogonal to those within the central portions of the MTD. This relationship is hypothesized to be a consequence of edge effects that may be related to lateral compression along the margins of the MTD. Our analysis demonstrates the importance of accounting for spatial hetero geneity in slump structure orientations when determining the paleoslope orientation through kinematic analysis. Our inference of west-directed translation suggests that the North Awakino MTD formed in response to a local change in the bathymetric slope orientation that was likely the result of tectonically induced basin deformation.

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Outcrop and Seismic Examples of Mass-Transport Deposits from a Late Miocene Deep-Water Succession, Taranaki Basin, New Zealand

Cited by 21 publications

References 0 publications

Refined depositional history and dating of the Tongaporutuan reference section, north Taranaki, New Zealand: new volcanic ash U–Pb zircon ages, biostratigraphy and sedimentation rates

Refined depositional history and dating of the Tongaporutuan reference section, north Taranaki, New Zealand: new volcanic ash U–Pb zircon ages, biostratigraphy and sedimentation rates

A New Method For Interpolating Ages Between Calibrated Control Points Based On Foraminiferal Concentrations

Spatial patterns of deformation and paleoslope estimation within the marginal and central portions of a basin-floor mass-transport deposit, Taranaki Basin, New Zealand

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