Early Permian silt-bed fluvial sedimentation in the Orogrande basin of the Ancestral Rocky Mountains, New Mexico, USA

Greg H. Mack; Mike Leeder; Marta Perez-Arlucea; Brendan D. J. Bailey

doi:10.1016/S0037-0738(02)00375-5

Early Permian silt-bed fluvial sedimentation in the Orogrande basin of the Ancestral Rocky Mountains, New Mexico, USA

Greg H. Mack
, Mike Leeder
, Marta Perez-Arlucea
, Brendan D. J. Bailey

Research output: Contribution to journal › Article › peer-review

45 Citations (Scopus)

Abstract

The Lower Permian (Wolfcampian) Abo Formation of south-central New Mexico was deposited by a silt-dominated fluvial system along the western half of the Orogrande basin a few degrees north of the equator in western Pangaea. Fluvial channel deposits consist primarily of: (1) inclined siltstone stratasets up to 4.5 m thick and 25 m wide interpreted as point bar deposits, and (2) symmetrically infilled siltstone stratasets up to 2.4 m thick and 14 m long that may represent avulsion crevasse channels. Both types of channels are dominated by climbing ripple cross-laminae and plane bed laminae, but trough cross-beds are also present, as are several types of soft-sediment deformation structures and desiccation cracks. Red silty mudstones interpreted as floodplain deposits comprise up to 70% of the formation and are interbedded with thin (

Original language	English
Pages (from-to)	159-178
Number of pages	20
Journal	Sedimentary Geology
Volume	160
Issue number	1-3
DOIs	https://doi.org/10.1016/S0037-0738(02)00375-5
Publication status	Published - 2003

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10.1016/S0037-0738(02)00375-5

Cite this

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title = "Early Permian silt-bed fluvial sedimentation in the Orogrande basin of the Ancestral Rocky Mountains, New Mexico, USA",

abstract = "The Lower Permian (Wolfcampian) Abo Formation of south-central New Mexico was deposited by a silt-dominated fluvial system along the western half of the Orogrande basin a few degrees north of the equator in western Pangaea. Fluvial channel deposits consist primarily of: (1) inclined siltstone stratasets up to 4.5 m thick and 25 m wide interpreted as point bar deposits, and (2) symmetrically infilled siltstone stratasets up to 2.4 m thick and 14 m long that may represent avulsion crevasse channels. Both types of channels are dominated by climbing ripple cross-laminae and plane bed laminae, but trough cross-beds are also present, as are several types of soft-sediment deformation structures and desiccation cracks. Red silty mudstones interpreted as floodplain deposits comprise up to 70\% of the formation and are interbedded with thin (",

author = "Mack, \{Greg H.\} and Mike Leeder and Marta Perez-Arlucea and Bailey, \{Brendan D. J.\}",

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doi = "10.1016/S0037-0738(02)00375-5",

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T1 - Early Permian silt-bed fluvial sedimentation in the Orogrande basin of the Ancestral Rocky Mountains, New Mexico, USA

AU - Mack, Greg H.

AU - Leeder, Mike

AU - Perez-Arlucea, Marta

AU - Bailey, Brendan D. J.

PY - 2003

Y1 - 2003

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AB - The Lower Permian (Wolfcampian) Abo Formation of south-central New Mexico was deposited by a silt-dominated fluvial system along the western half of the Orogrande basin a few degrees north of the equator in western Pangaea. Fluvial channel deposits consist primarily of: (1) inclined siltstone stratasets up to 4.5 m thick and 25 m wide interpreted as point bar deposits, and (2) symmetrically infilled siltstone stratasets up to 2.4 m thick and 14 m long that may represent avulsion crevasse channels. Both types of channels are dominated by climbing ripple cross-laminae and plane bed laminae, but trough cross-beds are also present, as are several types of soft-sediment deformation structures and desiccation cracks. Red silty mudstones interpreted as floodplain deposits comprise up to 70% of the formation and are interbedded with thin (

U2 - 10.1016/S0037-0738(02)00375-5

DO - 10.1016/S0037-0738(02)00375-5

M3 - Article

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