Trench-sedimentation versus accreted submarine fan—an approach to regional-scale facies analysis in a Mesozoic accretionary complex: “Torlesse” terrane, northeastern North Island, New Zealand

Leverenz, Axel

doi:10.1016/s0037-0738(00)00005-1

Cited by 14 publications

(13 citation statements)

References 34 publications

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“…Alternatively, the FA3 may represent axial channel fills, which is supported by the basin axis-parallel palaeocurrent directions (cf. Lewis and Barnes 1999;Leverenz 2000). Similarly, Hartley and Otava (2001) have reported from the MSCB the bundles of high-density turbidite sandstones showing similar facies characteristics and sheet-like geometry traceable over 150 m, interpreting them as unconfined sandstone sheets (lobes) or fills of shallow channels.…”

Section: Fa2: Slope Apron Depositsmentioning

confidence: 72%

“…Prevalence of upper-flow regime traction structures and relatively great thickness of individual beds (several dm to 1 m) suggest deposition from thick, low velocity turbidity flows, possibly in an channel overbank settings (cf. Leverenz 2000). Heterolithic siltstone-mudstone beds of facies type F5 ( Fig.…”

Section: Low-density Turbidity Current Depositsmentioning

confidence: 99%

“…It is, however, difficult to interpret the FA3 as typical sandstone lobe deposits. Compared with channelized systems, a typical sandstone lobe system is usually associated with metre-scale thick sandstone compensation cycles (Mutti and Sonnino 1981), good correlation between grain size and bed thickness, indicating attainment of flow equilibrium and longer transport (Leverenz 2000), and higher proportion of sheet-like beds with welldeveloped complete Bouma sequences and tool marks (Ciner et al 1996). In the FA3, the example of the basal CU trend may indicate sandstone lobe progradation (Mutti and Ricci-Lucchi 1975;Shanmugam and Moiola 1985), but, in general, the proportion of sandstone beds with Bouma sequences is usually low, internal compensation cycles were not found and there is a very high proportion of thick, coarse-grained beds of high-density turbidites (F3a, F3b) relative to low-density ones.…”

Section: Fa2: Slope Apron Depositsmentioning

confidence: 99%

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Combined tectonic-sediment supply-driven cycles in a Lower Carboniferous deep-marine foreland basin, Moravice Formation, Czech Republic

Bábek

Mikuláš

Zapletal

et al. 2004

Int J Earth Sci (Geol Rundsch)

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The Lower Carboniferous Moravian-Silesian Culm Basin (MSCB) represents the easternmost part of the Rhenohercynian system of collision-related, deepwater foreland basins (Culm facies). The Upper VisØan Moravice Formation (MF) of the MSCB shows a distinct cyclic stratigraphic arrangement. Two major asymmetric megacycles bounded by basal sequence boundary, each about 500 to 900 m thick, have been revealed. The megacycles start with 50-to 250-m-thick, basal segments of erosive channels: overbank successions and slope apron deposits interpreted as lowstand turbidite systems. Up-section they pass into hundred metre-thick, finegrained, low-efficiency turbidite systems. Palaeocurrent data show two prominent directions, basin axis-parallel, SSW-NNE directions, which are abundant in the whole MF, and basin axis-perpendicular to oblique, W-E to NW-SE directions, which tend to be confined to the basal parts of the megacycles or channel-lobe transition systems in their upper parts. Based on the facies characteristics, palaeocurrent data, sandstone composition data and tracefossil distribution data, we suggest a combined tectonicssediment supply-driven model for the MF basin fill. Periods of increased tectonic activity resulted in slope oversteepening probably combined with increased rate of lateral W-E sediment supply into the basin, producing the basal sequence boundary and the subsequent lowstand turbidite systems. During subsequent periods of tectonic quiescence, the system was filled mainly from a distant southern point source, producing the thick, low efficiency turbidite systems. Consistently with the previous models, our own sediment composition data indicate a progressively increasing sediment input from high-grade metamorphic and magmatic sources up-section, most probably related to an uplift in the source area and progressive unroofing of its structurally deeper crustal parts. The first occurrence of the Cruziana-Nereites ichnofacies in sandrich turbidite systems in the youngest parts of the MF (Gobel to Gobspi Zone), supported by rapidly increasing quartz concentrations in sandstones, is thought to indicate a transition from generally underfilled to generally overfilled phase in evolution of the MSCB basin. This transition may be linked to the onset of Upper VisØan phase of northward basin-fill progradation assumed by previous authors.

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Section: Fa2: Slope Apron Depositsmentioning

confidence: 72%

Section: Low-density Turbidity Current Depositsmentioning

confidence: 99%

Section: Fa2: Slope Apron Depositsmentioning

confidence: 99%

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Combined tectonic-sediment supply-driven cycles in a Lower Carboniferous deep-marine foreland basin, Moravice Formation, Czech Republic

Bábek

Mikuláš

Zapletal

et al. 2004

Int J Earth Sci (Geol Rundsch)

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“…Analysis of clast fabrics of these conglomerates indicates rather high turbulence and consequent loss of competence in their final flow stage. This implies hydraulic-jump mechanisms at lower slope breaks, resulting in rapid deposition (Leverenz 2000). This sedimentary mechanism could be responsible for a restricted extent of these conglomerates only west of the Wellington-MohakaWhakatane Fault.…”

Section: Modelmentioning

confidence: 98%

Terrane affiliation and terrane boundaries of Mesozoic accretionary complexes, northeastern North Island, New Zealand: Some implications from recycled elastics

Leverenz

Ballance

2001

New Zealand Journal of Geology and Geophysics

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In the late Mesozoic Waioeka petrofacies in northeastern North Island, New Zealand, sandstone pebbles differ significantly in petrography from their enclosing sandy conglomerate matrix, and yield contrasting provenance signatures. The compositional contrast demonstrates the extrabasinal origin of most of the analysed clasts. Differences in clast provenance have been used to review boundaries and the terrane affiliation to the neighbouring Torlesse and Waipapa composite terranes.A previously postulated Cretaceous large-scale dextral strike-slip displacement of eastern North Island along the Wellington-Mohaka-Whakatane Fault is supported by these data. The timing for this movement can be further bracketed between c. 98 and 85 Ma. The Waioeka and Omaio petrofacies, formerly attributed to the Torlesse terranes as the Waioeka Subterrane, are reinterpreted to constitute a separate terrane (Waioeka-Mata River Terrane). However, the westernmost portion of the former Waioeka Subterrane, west of the Wellington-Mohaka-Whakatane Fault, is considered to be part of the Waipapa composite terrane.

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“…These observations, and changes in lithofacies, are consistent with an overall transition in Late Jurassic-Early Cretaceous depositional setting from fluvial and shallow marine shelf or forearc environments in the west to deeper marine and more deformed trench-slope basins in the east. Leverenz (2000) has proposed a lower trench fan environment for the Waioeka petrofacies in East Cape. The relatively stable forearc or shelf edge may have been at the Waipa Fault (Kear 1971).…”

Section: Structure and Metamorphismmentioning

confidence: 99%

Waipa Supergroup, New Zealand: A proposal

Karátson

Mortimer

2003

Journal of the Royal Society of New Zealand

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Trench-sedimentation versus accreted submarine fan—an approach to regional-scale facies analysis in a Mesozoic accretionary complex: “Torlesse” terrane, northeastern North Island, New Zealand

Cited by 14 publications

References 34 publications

Combined tectonic-sediment supply-driven cycles in a Lower Carboniferous deep-marine foreland basin, Moravice Formation, Czech Republic

Combined tectonic-sediment supply-driven cycles in a Lower Carboniferous deep-marine foreland basin, Moravice Formation, Czech Republic

Terrane affiliation and terrane boundaries of Mesozoic accretionary complexes, northeastern North Island, New Zealand: Some implications from recycled elastics

Waipa Supergroup, New Zealand: A proposal

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