Time-specific aspects of facies: State of the art, examples, and possible causes

Brett, Carlton E.; McLaughlin, Patrick I.; Histon, Kathleen; Schindler, Eberhard; Ferretti, Annalisa

doi:10.1016/j.palaeo.2012.10.009

Cited by 61 publications

(25 citation statements)

References 101 publications

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“…Additionally, in the case of the Cantabrian Zone, the Silurian Formigoso black shales un-derlie the San Pedro Fm. Therefore, it is conceivable that an intra-Rheic or even a global event took place that changed the redox conditions of the ocean(s) likely related with a biogenic event (Brett et al, 2012;Ferretti et al, 2012).…”

Section: Significance Of Whole Rock Geochemical Datamentioning

confidence: 99%

Tectonic evolution of NW Iberia during the Paleozoic inferred from the geochemical record of detrital rocks in the Cantabrian Zone

Pastor‐Galán

Gutiérrez-Alonso

Fernández‐Suárez

et al. 2013

Lithos

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The Cantabrian Zone of NW Iberia preserves a voluminous, almost continuous, sedimentary sequence that ranges in age from Ediacaran to Early Permian. Its tectonic setting is controversial and recent hypotheses include (i) passive margin deposition along the northern margin of Gondwana, (ii) an active continental margin, or (iii) the margin of a drifting ribbon continent and (iv) a combination of the three aforementioned possibilities. In this paper we present geochemical data from 21 samples taken in detrital rocks in the Cantabrian Zone from Ediacar-an to Early Permian age. The results, together with previously published detrital zircon ages from these strata, allow a comprehensive analysis of changing tectonic scenarios and provenance through time. Collectively, these data indicate that this portion of Iberia was an active margin during the Ediacaran that evolved to become part of the passive margin of Gondwana at least from Ordovician to Late Devonian times. Changes in geochemistry, zircon age distribution and Sm/Nd isotopes during the Carboniferous are attributed to the far-field effects of the onset of the collision between Gondwana and Laurussia, and related processes such as recycling of older sedimentary sequences, as well as the involvement of the rocks formed during the Variscan orogeny and oroclinal buckling. Latest Carboniferous and Permian show a more juvenile Sm/Nd and higher values of illite cristallinity that may support the hypothesis of lithospheric foundering after oroclinal buckling.

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Section: Significance Of Whole Rock Geochemical Datamentioning

confidence: 99%

Tectonic evolution of NW Iberia during the Paleozoic inferred from the geochemical record of detrital rocks in the Cantabrian Zone

Pastor‐Galán

Gutiérrez-Alonso

Fernández‐Suárez

et al. 2013

Lithos

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“…Time-specific sedimentary facies can reveal rare combinations of geological, paleoecological, and paleoclimatic conditions but are notoriously difficult to interpret because of the lack of modern analogs (Brett et al, 2012). This implies that such geologically unique conditions, or unique combination of conditions, do not have modern analogs.…”

Section: Introductionmentioning

confidence: 99%

Meganodular limestone of the Pagoda Formation: A time-specific carbonate facies in the Upper Ordovician of South China

Zhan

Jin

et al. 2016

Palaeogeography, Palaeoclimatology, Palaeoecology

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“…A distinctive iron ooid horizon was also located in a single exposure. This ferruginous level represents a widespread and recurrent time-specific facies known from the Upper Ordovician as well as from other specific intervals in the Palaeozoic (Brett et al 2012).…”

Section: Geological Settingmentioning

confidence: 86%

Composition and significance of the Katian (Upper Ordovician) conodont fauna of the Vaux Limestone (‘Calcaire des Vaux’) in Normandy, France; pp. 214–219

Ferretti¹,

Messori²,

Bergström³

2014

Estonian Journal of Earth Sciences

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Study of new conodont collections from the Vaux Limestone exposed at its classical locality at Saint-Hilaire-la-Gérard in the Sées syncline, the conodont fauna of which was previously described in a preliminary way by Weyant et al. (1977, Un épisode calcaire ashgillien dans l'est du Massif armoricain; incidence sur l'âge des dépôts glacio-marins fini-ordoviciens. , has provided significant new information about Late Ordovician conodonts from Normandy. A more precise age of this formation has been established based on an unexpectedly abundant conodont fauna of low diversity. Representatives of Amorphognathus, Hamarodus, Sagittodontina, Scabbardella and Eocarniodus are present and the fauna is referable to the middle Katian-lower Hirnantian A. ordovicicus Zone. Our study, the first illustrating Ordovician conodonts from Normandy, shows that the fauna is closely similar to middle Katian faunas from other parts of continental Europe and represents the Sagittodontina robusta-Scabbardella altipes biofacies of the Mediterranean Province.

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Time-specific aspects of facies: State of the art, examples, and possible causes

Cited by 61 publications

References 101 publications

Tectonic evolution of NW Iberia during the Paleozoic inferred from the geochemical record of detrital rocks in the Cantabrian Zone

Tectonic evolution of NW Iberia during the Paleozoic inferred from the geochemical record of detrital rocks in the Cantabrian Zone

Meganodular limestone of the Pagoda Formation: A time-specific carbonate facies in the Upper Ordovician of South China

Composition and significance of the Katian (Upper Ordovician) conodont fauna of the Vaux Limestone (‘Calcaire des Vaux’) in Normandy, France; pp. 214–219

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