MD-QDA characteristics of montane deposits and their confounding of the QDA-MD model for the discrimination of continental environments

McArthur, J. L.

doi:10.1016/0037-0738(82)90040-9

Cited by 3 publications

(1 citation statement)

References 9 publications

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“…The assumption that the presence of a stream flowing on or within a fan implies an alluvial origin, however, may in some cases be invalid. It has been shown, for example, that the Md-QDa characteristics of the fan deposits described below suggest transport by mass movement (McArthur, 1982) and elsewhere in the region the building of 'alluvial fans' in the same valleyside location and from the same bedrock type has been attributed to debris flow (Read, 1976;Pierson, 1980). It thus seems appropriate that a distinction be made between 'valley-side fans' such as those studied in this investigation and the larger 'valley-floor fans' associated with streams debouching from substantial catchments.…”

Section: Introductionmentioning

confidence: 99%

The characteristics, classification and origin of late Pleistocene fan deposits in the Cass Basin, Canterbury, New Zealand

McArthur

1987

Sedimentology

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The deposits comprising ‘valley‐side fans’ in a small intermontane basin of the Southern Alps are classified as debris flow, water‐laid, intermediate and mixed deposits on the basis of particle size and clast orientation characteristics. Five varieties of debris flow deposit are identified including unimodal and bimodal ‘mudflow gravels’. The fans comprise mainly unimodal mudflow gravels which although apparently similar to the mudflow gravels described from montane and periglacial environments are coarser, have less silt and clay and are better sorted than the mudflow deposits described from semiarid alluvial fans. Additions of airborne silt and fine sand to the fan catchments during later stages of fan building gave rise to bimodal debris flow deposits which appear similar to gravels described from cold‐climate fans in Tasmania and classed as water‐laid deposits. Braided stream deposits were added to the depositional sequence towards the closing stages of fan building indicating that the fan had become ‘wetter’. In many places, however, the youngest Pleistocene fan deposits are silt‐rich mixtons reflecting a peak in loess deposition.

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Section: Introductionmentioning

confidence: 99%

The characteristics, classification and origin of late Pleistocene fan deposits in the Cass Basin, Canterbury, New Zealand

McArthur

1987

Sedimentology

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REPLY: APPLICATION OF THE QDa–Md METHOD OF ENVIRONMENTAL DISCRIMINATION TO PARTICLE SIZE ANALYSES OF FINE SEDIMENTS BY PIPETTE AND SEDIGRAPH METHODS

Duck

1996

Earth Surf. Process. Landforms

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Sediment classification and surface type mapping in the Danish Wadden Sea by remote sensing

Bartholdy

Folving

1986

Netherlands Journal of Sea Research

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MD-QDA characteristics of montane deposits and their confounding of the QDA-MD model for the discrimination of continental environments

Cited by 3 publications

References 9 publications

The characteristics, classification and origin of late Pleistocene fan deposits in the Cass Basin, Canterbury, New Zealand

The characteristics, classification and origin of late Pleistocene fan deposits in the Cass Basin, Canterbury, New Zealand

REPLY: APPLICATION OF THE QDa–Md METHOD OF ENVIRONMENTAL DISCRIMINATION TO PARTICLE SIZE ANALYSES OF FINE SEDIMENTS BY PIPETTE AND SEDIGRAPH METHODS

Sediment classification and surface type mapping in the Danish Wadden Sea by remote sensing

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