Sequence Stratigraphic Context of Extensive Basin-Margin Evaporites: Middle Jurassic Gypsum Spring Formation, Wyoming, U.S.A.

Clement, Annaka M.; Holland, Steven M.

doi:10.2110/jsr.2016.63

Cited by 8 publications

(10 citation statements)

References 62 publications

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“…Shown at right are unconformities recognized by Pipiringos () and Pipiringos & O'Sullivan (), as recently modified by McMullen et al . () and Clement & Holland (). Absolute time scale is from Cohen et al .…”

Section: Geological Settingmentioning

confidence: 99%

“…Three recent studies on the Gypsum Spring and Sundance formations of the Bighorn Basin, Wyoming, have developed the sequence stratigraphical framework used in this study (Parcell & Williams ; McMullen et al . ; Clement & Holland ). We have extended this across Wyoming, into adjacent parts of South Dakota, Montana and Idaho; this extended sequence stratigraphical framework will be published separately.…”

Section: Geological Settingmentioning

confidence: 99%

“…The Gypsum Spring and Sundance formations are exposed in Wyoming along the flanks of Late Cretaceous to Cenozoic uplifts, including the Black Hills, Pryor Mountains, Bighorn Mountains, Wind River Mountains, Wyoming Range and Laramie Mountains. The Gypsum Spring Formation, with a maximum thickness of about 80 m, was deposited on a north‐westward‐dipping mixed evaporate–carbonate–siliciclastic ramp, with depositional environments that include distal ooid shoals, open shallow subtidal, restricted shallow subtidal, peritidal, salinas and desert mud flat to sabkha (Clement & Holland ). It is divided informally into lower, middle and upper members (Parcell & Williams ; Clement & Holland ), and only the middle member is fossiliferous.…”

Section: Geological Settingmentioning

confidence: 99%

“…The facies models of McMullen et al . () and Clement & Holland () can be readily applied to the Twin Creek Formation, with the addition of carbonate offshore and deep subtidal facies not present to the east. The Twin Creek Formation is subdivided into seven members that were deposited in spectrum of environments ranging from desert mudflat and sabkha to carbonate offshore (Fig.…”

Section: Geological Settingmentioning

confidence: 99%

“…Developed within marine deposits of the Jurassic Sundance Seaway are eight third‐order, unconformity‐bounded, depositional sequences, collectively representing approximately 13 myr (Pipiringos ; Pipiringos & O'Sullivan ; Brenner & Peterson ; McMullen et al . ; Clement & Holland ). Superimposed on these cyclical changes in sea level is a transition from subtropical arid climates into progressively more humid conditions (Boucot et al .…”

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confidence: 99%

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Faunal response to sea‐level and climate change in a short‐lived seaway: Jurassic of the Western Interior, USA

Danise

Holland

2017

Palaeontology

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Understanding how regional ecosystems respond to sea‐level and environmental perturbations is a main challenge in palaeoecology. Here we use quantitative abundance estimates, integrated within a sequence stratigraphic and environmental framework, to reconstruct benthic community changes through the 13 myr history of the Jurassic Sundance Seaway in the western United States. Sundance Seaway communities are notable for their low richness and high dominance relative to most areas globally in the Jurassic, and this probably reflects steep temperature and salinity gradients along the 2000 km length of the Seaway that hindered colonization of species from the open ocean. Ordination of samples shows a main turnover event at the Middle–Upper Jurassic transition, which coincided with a shift from carbonate to siliciclastic depositional systems in the Seaway, probably initiated by northward drift from subtropical latitudes to more humid temperate latitudes, and possibly global cooling. Turnover was not uniform across the onshore–offshore gradient, but was higher in offshore environments. The higher resilience of onshore communities to third‐order sea‐level fluctuations and to the change from a carbonate to a siliciclastic system was driven by a few abundant eurytopic species that persisted from the opening to the closing of the Seaway. Lower stability in offshore facies was instead controlled by the presence of more volatile stenotopic species. Such increased onshore stability in community composition contrasts with the well‐documented onshore increase in taxonomic turnover rates, and this study underscores how ecological analyses of relative abundance may contrast with taxonomically based analyses. We also demonstrate the importance of a stratigraphic palaeobiological approach to reconstructing the links between environmental and faunal gradients, and how their evolution through time produces local stratigraphic changes in community composition.

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Section: Geological Settingmentioning

confidence: 99%

Section: Geological Settingmentioning

confidence: 99%

Section: Geological Settingmentioning

confidence: 99%

Section: Geological Settingmentioning

confidence: 99%

mentioning

confidence: 99%

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Faunal response to sea‐level and climate change in a short‐lived seaway: Jurassic of the Western Interior, USA

Danise

Holland

2017

Palaeontology

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Unconformity generation and the shift from storm‐dominated to tide‐dominated processes in a Jurassic retroarc foreland basin: Insights from ichnology

Wroblewski

Morris

2023

The Depositional Record

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An enigmatic transition from the storm‐dominated, offshore to lower shoreface deposits of the Redwater Shale Member (Sundance Formation) to the overlying mixed tidal and aeolian Windy Hill Sandstone (Morrison Formation) in the Oxfordian of the North American Western Interior has long been a source of intrigue. Previously proposed drivers include the progradation of a large, tide‐dominated delta onto a storm‐dominated shelf, a complete reorganisation of the basin's hydrodynamics and climate, or the development of a regional unconformity (termed the J‐5). In south‐eastern Wyoming, the Redwater Shale is characterised as an offshore to distal shoreface deposit with glauconitic siltstones and sandstones punctuated by coquinoid and sandy tempestites and hosting a Cruziana Ichnofacies. The Windy Hill Sandstone, a time‐transgressive, sand‐rich, intertidal succession with classic Pteraichnus and stressed Skolithos Ichnofacies, sharply overlies the Redwater Shale and records an abrupt basinward shift in facies that accompanied at least tens of metres of sea‐level fall. New, detailed sedimentological, ichnological and architectural data collected across this transition in the study area provide fresh insights into the depositional history of these units and demonstrates the existence locally of a composite J‐5 unconformity. The unconformity developed as tectonically driven, prograding shoreline trajectories of the Redwater Shale gave way to degrading trajectories of the Windy Hill Sandstone, leading to a forced regression and formation of a regressive surface of marine erosion. The sharp juxtaposition of intertidal flat facies (Pteraichnus Ichnofacies) directly upon offshore to lower shoreface deposits (Cruziana Ichnofacies) is the key to recognising the unconformity and proves the value of the previously underutilised ichnological data.

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Dolomitization of reservoir rocks in the Smackover Formation, southeastern Gulf Coast, U.S.A

Prather

Goldstein

Kopaska-Merkel

et al. 2023

Earth-Science Reviews

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Sequence Stratigraphic Context of Extensive Basin-Margin Evaporites: Middle Jurassic Gypsum Spring Formation, Wyoming, U.S.A.

Cited by 8 publications

References 62 publications

Faunal response to sea‐level and climate change in a short‐lived seaway: Jurassic of the Western Interior, USA

Faunal response to sea‐level and climate change in a short‐lived seaway: Jurassic of the Western Interior, USA

Unconformity generation and the shift from storm‐dominated to tide‐dominated processes in a Jurassic retroarc foreland basin: Insights from ichnology

Dolomitization of reservoir rocks in the Smackover Formation, southeastern Gulf Coast, U.S.A

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