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Origin of fluvial grain-size trends in a foreland basin: Pocono Formation on the central Appalachian basin

Research output: Contribution to journalArticlepeer-review

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Origin of fluvial grain-size trends in a foreland basin: Pocono Formation on the central Appalachian basin. / Robinson, Ruth Alison Joyce; Slingerland, R L .

In: Journal of Sedimentary Research, Vol. 68, No. 3, 05.1998, p. 473-486.

Research output: Contribution to journalArticlepeer-review

Harvard

Robinson, RAJ & Slingerland, RL 1998, 'Origin of fluvial grain-size trends in a foreland basin: Pocono Formation on the central Appalachian basin', Journal of Sedimentary Research, vol. 68, no. 3, pp. 473-486.

APA

Robinson, R. A. J., & Slingerland, R. L. (1998). Origin of fluvial grain-size trends in a foreland basin: Pocono Formation on the central Appalachian basin. Journal of Sedimentary Research, 68(3), 473-486.

Vancouver

Robinson RAJ, Slingerland RL. Origin of fluvial grain-size trends in a foreland basin: Pocono Formation on the central Appalachian basin. Journal of Sedimentary Research. 1998 May;68(3):473-486.

Author

Robinson, Ruth Alison Joyce ; Slingerland, R L . / Origin of fluvial grain-size trends in a foreland basin: Pocono Formation on the central Appalachian basin. In: Journal of Sedimentary Research. 1998 ; Vol. 68, No. 3. pp. 473-486.

Bibtex - Download

@article{8e22336ef49c44a98362fa0e5236c272,
title = "Origin of fluvial grain-size trends in a foreland basin: Pocono Formation on the central Appalachian basin",
abstract = "A widely recognized phenomenon of modern and ancient river systems is downstream decrease in grain size. Over the past two decades, theoretical formulations, observations of modern rivers, flume studies, and numerical models have significantly increased our understanding of sediment transport in mixed-grain-size river systems, These have established that downstream fining in modern and ancient rivers can be attributed to a combination of selective sorting, abrasion rate, and accumulation rate. However, no detailed multiple-grain-size sediment transport model has been used to address how much subsidence rate, sediment flux, water discharge, hydraulic geometry, and the mechanics of sediment transport influence grain size distribution and facies belt development in ancient fluvial systems. We have combined the results of recent empirical and theoretical studies with a multiple-grain-size sediment transport model (MIDAS) to test the sensitivity of downstream fining trends to those controlling mechanisms. Our results demonstrate that subsidence and sediment feed rate are the most important mechanisms controlling downstream fining trends in a foreland basin if the evolution of hydraulic geometry is known. To illustrate the application of this result, we have replicated the textural trends of the Mississippian upper Pocono Formation and Burgeon Sandstone of Pennsylvania. This methodology can be applied to constrain plausible values of accumulation and subsidence rate for ancient alluvial deposits and enhances our ability to interpret paleohydraulic conditions from such facies in a foreland basin.",
keywords = "GRAVEL-BEDDED RIVERS, NUMERICAL-SIMULATION, HETEROGENEOUS SEDIMENTS, SELECTIVE DEPOSITION, STRATIGRAPHIC MODEL, BEDLOAD TRANSPORT, MIXED SIZES, MOVABLE BED, DOWNSTREAM, ENTRAINMENT",
author = "Robinson, {Ruth Alison Joyce} and Slingerland, {R L}",
year = "1998",
month = may,
language = "English",
volume = "68",
pages = "473--486",
journal = "Journal of Sedimentary Research",
issn = "1527-1404",
publisher = "SEPM Society for Sedimentary Geology",
number = "3",

}

RIS (suitable for import to EndNote) - Download

TY - JOUR

T1 - Origin of fluvial grain-size trends in a foreland basin: Pocono Formation on the central Appalachian basin

AU - Robinson, Ruth Alison Joyce

AU - Slingerland, R L

PY - 1998/5

Y1 - 1998/5

N2 - A widely recognized phenomenon of modern and ancient river systems is downstream decrease in grain size. Over the past two decades, theoretical formulations, observations of modern rivers, flume studies, and numerical models have significantly increased our understanding of sediment transport in mixed-grain-size river systems, These have established that downstream fining in modern and ancient rivers can be attributed to a combination of selective sorting, abrasion rate, and accumulation rate. However, no detailed multiple-grain-size sediment transport model has been used to address how much subsidence rate, sediment flux, water discharge, hydraulic geometry, and the mechanics of sediment transport influence grain size distribution and facies belt development in ancient fluvial systems. We have combined the results of recent empirical and theoretical studies with a multiple-grain-size sediment transport model (MIDAS) to test the sensitivity of downstream fining trends to those controlling mechanisms. Our results demonstrate that subsidence and sediment feed rate are the most important mechanisms controlling downstream fining trends in a foreland basin if the evolution of hydraulic geometry is known. To illustrate the application of this result, we have replicated the textural trends of the Mississippian upper Pocono Formation and Burgeon Sandstone of Pennsylvania. This methodology can be applied to constrain plausible values of accumulation and subsidence rate for ancient alluvial deposits and enhances our ability to interpret paleohydraulic conditions from such facies in a foreland basin.

AB - A widely recognized phenomenon of modern and ancient river systems is downstream decrease in grain size. Over the past two decades, theoretical formulations, observations of modern rivers, flume studies, and numerical models have significantly increased our understanding of sediment transport in mixed-grain-size river systems, These have established that downstream fining in modern and ancient rivers can be attributed to a combination of selective sorting, abrasion rate, and accumulation rate. However, no detailed multiple-grain-size sediment transport model has been used to address how much subsidence rate, sediment flux, water discharge, hydraulic geometry, and the mechanics of sediment transport influence grain size distribution and facies belt development in ancient fluvial systems. We have combined the results of recent empirical and theoretical studies with a multiple-grain-size sediment transport model (MIDAS) to test the sensitivity of downstream fining trends to those controlling mechanisms. Our results demonstrate that subsidence and sediment feed rate are the most important mechanisms controlling downstream fining trends in a foreland basin if the evolution of hydraulic geometry is known. To illustrate the application of this result, we have replicated the textural trends of the Mississippian upper Pocono Formation and Burgeon Sandstone of Pennsylvania. This methodology can be applied to constrain plausible values of accumulation and subsidence rate for ancient alluvial deposits and enhances our ability to interpret paleohydraulic conditions from such facies in a foreland basin.

KW - GRAVEL-BEDDED RIVERS

KW - NUMERICAL-SIMULATION

KW - HETEROGENEOUS SEDIMENTS

KW - SELECTIVE DEPOSITION

KW - STRATIGRAPHIC MODEL

KW - BEDLOAD TRANSPORT

KW - MIXED SIZES

KW - MOVABLE BED

KW - DOWNSTREAM

KW - ENTRAINMENT

UR - http://www.scopus.com/inward/record.url?scp=13144249235&partnerID=8YFLogxK

M3 - Article

VL - 68

SP - 473

EP - 486

JO - Journal of Sedimentary Research

JF - Journal of Sedimentary Research

SN - 1527-1404

IS - 3

ER -

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