The paleoecologic significance of storm-generated disturbance within a Middle Devonian muddy epeiric sea

Miller, Keith; Brett, Carlton E.; Parsons, Karla M.

doi:10.2307/3514543

Cited by 74 publications

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“…Echinoderms are present in the coarse sandstones, but are most abundant in a thin (1 cm) muddy, fine-grained sandstone capping the top of each bed (Fig. 5C) . Miller et al (1988) interpreted similar beds within the dynamics of a storm-depositional model: the basal lag representing the shelly benthos and mud substrate ripped up from the sea-bed at the height of storm activity; the brachiopod coquina as a shell bed sorted by winnowing and the coarse sandstone deposited by traction during successive waning phases of the storm; and the muddier layer rich in starfish representing blanket deposition of f'me particles from suspension as Fig.…”

Section: Occasionalmentioning

confidence: 99%

“…The associated bivalve fauna (Chapman 1908) is conspicuous and includes both isolated valves and articulated valves, open or closed, lying on bedding planes or oriented vertically in life position. Miller et al (1988) considered sequences preserving autochthonous mud blanketed faunas to be distal tempestites, indicative of deposition just below maximum storm wave base (ie. > 50 -80 m), where the fine sediment and the entombed fauna is protected from subsequent storm wave activity such as winnowing, reworking and sorting.…”

Section: Occasionalmentioning

confidence: 99%

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Trilobite faunas and palaeoenvironmental setting of the Silurian (early Ludlow) Melbourne Formation, central Victoria

Sandford

2000

Alcheringa: An Australasian Journal of Palaeontology

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Section: Occasionalmentioning

confidence: 99%

Section: Occasionalmentioning

confidence: 99%

Trilobite faunas and palaeoenvironmental setting of the Silurian (early Ludlow) Melbourne Formation, central Victoria

Sandford

2000

Alcheringa: An Australasian Journal of Palaeontology

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“…Taphofacies, based on grouping fossil assemblages that share taphonomic features, can be valuable indicators of ancient environments and sedimentary processes, and are receiving increasing attention in paleoenvironmental reconstruction (e.g., Speyer and Brett, 1988;Norris 1986;Miller et al, 1988;Brandt, 1989).…”

Section: Taphofaciesmentioning

confidence: 99%

Biofacies and taphofacies of a Holocene macrotidal environment: Bahia La Cholla, Northern Gulf of California

Meldahl

1994

Cienc. Mar.

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Recibido en mayo de I 994; aceptado en noviembre de 1994Recognition of the paleoenvironmental significance of biofacies and taphofacies in the fossil record is greatly aided by their study in modern sedimentary environments. Holocene molluscan shell assemblages of Bahia la Cholla, a macrotidal shallow marine environment in the northern Gulf of California, form distinct biofacies and taphofacies whose distribution is controlled by different environmental variables.Biofacies primarily reflect variation in substrate. Distinctive molluscan communities characterize: I) Salt marsh and innermost tidal flats: organic-rich fine sediments, dominated by epifaunal deposit feeders and deep infauna! suspension feeders; 2) Inner, middle and outer tidal flats: fine to coarse sand, dominated by shallow infauna! suspension feeders; 3) Tidal channel and rocky intertidal ::one: hard substrates of shells or rock, dominated by epifaunal algal grazers; 4) Rocky subtidal ;:;one: alternating rock and sand, dominated by attached epifaunal suspension feeders and shallow infauna! suspension feeders.Taphofacies, based on taphonomy of the shallow infauna! bivalve Chione spp., primarily reflect variation in tidal submergence time and current energy. Distinctive suites of taphonomic attributes characterize: I) Outer tidal flats, rocky intertidal ;:;one, and rocky subtidal zone: environments experiencing prolonged or continuous tidal submergence and high tidal current velocities, characterized by high levels of abrasion, bioerosion by bivalves and clionid sponges, and encrustation by bryozoans; 2) Tidal channel: an environment experiencing continuous submergence and the strongest tidal currents, characterized by very high levels of abrasion, bioerosion by algae, and encrustation by serpulid polychaetes; 3) Sall marsh, inner tidal flats and middle tidal flats: environments experiencing relatively short periods of submergence and low tidal current velocities, characterized by low levels of taphonomic alteration.Biofacies and taphofacies provide different and complementary types of information about the sedimentary environments of Bahia la Cholla. In paleoecological studies, a more complete picture of ancient environments can be generated by integrating taphonomic data with taxonomic and ecologic data.Key words: taphonomy, intertidal, biofacies, taphofacies, paleoenvironmental interpretation. 555 http://dx.doi.org/10.7773/cm.v20i4.975Ciencias Marinas, Val. 20, No. 4, 1994 RESUMEN EI reconocimiento del significado paleoambiental de las facies y biofacies de los registros fósiles se facilita en gran medida al estudiarse en ambientes sedimentarios modernos, Los conjuntos de conchas de moluscos del holoceno de bahía La Cholla, un ambiente marino somero macromareal del norte del golfo de California, forman distintas biofacies y tafofacies, cuya distribución es controlada por diferentes variables ambientales.Las biofacies reflejan principalmente variación en el sustrato. Las diferentes comunidades de moluscos caracterizan: 1) la marisma y las planici...

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“…We have adapted these methodologies to the situation observed in the Devonian rocks of the Paraná basin. Storm deposits interpretation followed Miller et al (1988). …”

Section: Methodsmentioning

confidence: 99%

Early Devonian (Late Emsian) shark fin remains (Chondrichthyes) from the Paraná Basin, southern Brazil

Richter

Bosetti

Horodyski

2017

An. Acad. Bras. Ciênc.

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We report on the pioneering discovery of Devonian fish remains in the Paraná Basin, which represents the southernmost record of fishes from that period in mainland South America. The material comes from an outcrop at the lower portion of the São Domingos Formation, within Sequence C of the Paraná-Apucarana sub-basin in Tibagi, State of Paraná. Marine invertebrates are abundant in the same strata. The dark colored fish remains were collected in situ and represent natural moulds of partially articulated shark fin rays (radials). No elements such as teeth or prismatic cartilage have been preserved with the fins rays. This can be attributed to the dissolution of calcium-phosphatic minerals at the early stages of fossilization due to diagenetic processes possibly linked to strong negative taphonomic bias. This may have contributed to the fact that fishes remained elusive in the Devonian strata of this basin, despite substantial geological work done in the Paraná State in recent decades. In addition, the scarcity of fish fossils may be explained by the fact that the Devonian rock deposits in this basin originated in a vertebrate impoverished, cold marine environment of the Malvinokaffric Realm, as previously suspected.

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The paleoecologic significance of storm-generated disturbance within a Middle Devonian muddy epeiric sea

Cited by 74 publications

References 0 publications

Trilobite faunas and palaeoenvironmental setting of the Silurian (early Ludlow) Melbourne Formation, central Victoria

Trilobite faunas and palaeoenvironmental setting of the Silurian (early Ludlow) Melbourne Formation, central Victoria

Biofacies and taphofacies of a Holocene macrotidal environment: Bahia La Cholla, Northern Gulf of California

Early Devonian (Late Emsian) shark fin remains (Chondrichthyes) from the Paraná Basin, southern Brazil

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