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Title: High-frequency carbonate/siliciclastic reciprocal sedimentation within the Upper San Andres depositional sequence (Permian, Guadalupian), Last Chance Canyon, Guadalupe Mountains, New Mexico

Abstract

The upper San Andres Formation and Cherry Canyon Sandstone Tongue in Last Chance Canyon form a third-order depositional sequence comprising at least 12 smaller scale, time-bounded depositional units. The intertidal through toe-of-slope facies associations, volumetric proportions of carbonate/siliciclastic sedimentation, and depositional topography change progressively throughout the sequence. These variations reflect the controls that produce the landward-stepping, vertically stacked, and seaward-stepping arrangements of units constituting the sequence. In Last Chance Canyon many of the small-scale depositional units have stratal geometries and carbonate/siliciclastic relationships that are analogous to third-order sequences. The oldest depositional unit is a point-sourced turbidite lobe that onlaps the underlying sequence boundary. Carbonate-rich slope sandstones form the next two units, which also onlap the sequence boundary. These three landward-stepping to vertically stacked units compose the transgressive systems tract (TST). Units within the TST record a progressive decrease in sedimentation rate, depositional energy, and siliciclastic content that reflects the sequence-scale transition from toe-of-slope siliciclastic turbidites to an increasingly carbonate-dominated ramp. Within each of the two youngest units, a basal sandstone hemicycle is overlain by a mounded fusulinid-rich carbonate hemicycle. The maximum flooding surface caps the TST and is overlain by the most carbonate-rich interval of the sequence. From basal tomore » upper slope, the facies in this unit are laminated mudstones and wackestones, crinoid-bryozoan bafflestone bioherms, brachiopod-sponge reefs, and fusulinid mounds. Seaward-stepping units compose the middle highstand systems tract (HST).« less

Authors:
 [1]
  1. Colorado School of Mines, Golden, CO (USA)
Publication Date:
OSTI Identifier:
6637795
Report Number(s):
CONF-900605-
Journal ID: ISSN 0149-1423; CODEN: AABUD
Resource Type:
Conference
Journal Name:
AAPG Bulletin (American Association of Petroleum Geologists); (USA)
Additional Journal Information:
Journal Volume: 74:5; Conference: Annual convention and exposition of the American Association of Petroleum Geologists, San Francisco, CA (USA), 3-6 Jun 1990; Journal ID: ISSN 0149-1423
Country of Publication:
United States
Language:
English
Subject:
58 GEOSCIENCES; GEOLOGIC FORMATIONS; DEPOSITION; NEW MEXICO; CARBONATE ROCKS; FOSSILS; PERMIAN PERIOD; SANDSTONES; STRATIGRAPHY; FEDERAL REGION VI; GEOLOGIC AGES; GEOLOGY; NORTH AMERICA; PALEOZOIC ERA; ROCKS; SEDIMENTARY ROCKS; USA; 580000* - Geosciences

Citation Formats

Sonnenfeld, M D. High-frequency carbonate/siliciclastic reciprocal sedimentation within the Upper San Andres depositional sequence (Permian, Guadalupian), Last Chance Canyon, Guadalupe Mountains, New Mexico. United States: N. p., 1990. Web.
Sonnenfeld, M D. High-frequency carbonate/siliciclastic reciprocal sedimentation within the Upper San Andres depositional sequence (Permian, Guadalupian), Last Chance Canyon, Guadalupe Mountains, New Mexico. United States.
Sonnenfeld, M D. 1990. "High-frequency carbonate/siliciclastic reciprocal sedimentation within the Upper San Andres depositional sequence (Permian, Guadalupian), Last Chance Canyon, Guadalupe Mountains, New Mexico". United States.
@article{osti_6637795,
title = {High-frequency carbonate/siliciclastic reciprocal sedimentation within the Upper San Andres depositional sequence (Permian, Guadalupian), Last Chance Canyon, Guadalupe Mountains, New Mexico},
author = {Sonnenfeld, M D},
abstractNote = {The upper San Andres Formation and Cherry Canyon Sandstone Tongue in Last Chance Canyon form a third-order depositional sequence comprising at least 12 smaller scale, time-bounded depositional units. The intertidal through toe-of-slope facies associations, volumetric proportions of carbonate/siliciclastic sedimentation, and depositional topography change progressively throughout the sequence. These variations reflect the controls that produce the landward-stepping, vertically stacked, and seaward-stepping arrangements of units constituting the sequence. In Last Chance Canyon many of the small-scale depositional units have stratal geometries and carbonate/siliciclastic relationships that are analogous to third-order sequences. The oldest depositional unit is a point-sourced turbidite lobe that onlaps the underlying sequence boundary. Carbonate-rich slope sandstones form the next two units, which also onlap the sequence boundary. These three landward-stepping to vertically stacked units compose the transgressive systems tract (TST). Units within the TST record a progressive decrease in sedimentation rate, depositional energy, and siliciclastic content that reflects the sequence-scale transition from toe-of-slope siliciclastic turbidites to an increasingly carbonate-dominated ramp. Within each of the two youngest units, a basal sandstone hemicycle is overlain by a mounded fusulinid-rich carbonate hemicycle. The maximum flooding surface caps the TST and is overlain by the most carbonate-rich interval of the sequence. From basal to upper slope, the facies in this unit are laminated mudstones and wackestones, crinoid-bryozoan bafflestone bioherms, brachiopod-sponge reefs, and fusulinid mounds. Seaward-stepping units compose the middle highstand systems tract (HST).},
doi = {},
url = {https://www.osti.gov/biblio/6637795}, journal = {AAPG Bulletin (American Association of Petroleum Geologists); (USA)},
issn = {0149-1423},
number = ,
volume = 74:5,
place = {United States},
year = {Tue May 01 00:00:00 EDT 1990},
month = {Tue May 01 00:00:00 EDT 1990}
}

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