Ichnology, sedimentology, and sequence stratigraphy of outer-estuarine and coastal-plain deposits: Implications for the distinction between allogenic and autogenic expressions of the Glossifungites Ichnofacies

Pearson, Nadine J.; Mángano, M. Gabriela; Buatois, Luís A.; Casadı́o, Silvio; Raising, Martín Rodríguez

doi:10.1016/j.palaeo.2012.03.031

Cited by 32 publications

(32 citation statements)

References 31 publications

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“…The interstratification between these facies indicates the persistent alternation of bed load transport and deposition of sand and flocculated fluid muds (Pearson et al, 2012). The occurrence of mud drapes suggests fluctuating current energy and the influence of tidal currents (Dalrymple and Choi, 2007).…”

Section: Facies Association 2: Tidal Creek Depositsmentioning

confidence: 99%

“…Thus, the features of St and Sp facies of the FA4 together with the presence of brackish ichnofauna allow us to distinguish these channels from a purely freshwater fluvial channel (e.g. Longhitano et al, 2012;Pearson et al, 2012), and allow us to interpret these deposits as the subtidal part of the tidal channels in the central to inner part of an estuary (Table 2) Table 1), which is arranged in finning-and thinning-upward sheet bodies limited by irregular to sharp basal surfaces with thickness ranging from 0.5 to 1.7 m ( Table 2). Muddy intraclasts and thick mud drapes are sometimes present (Figs.…”

Section: Facies Association 4: Tidal Channel Depositsmentioning

confidence: 99%

“…The Ophiomorpha traces and its fecal pellets ascrived to the depauperate Skolithos ichnofacies suggest energetic conditions, as does the presence of abundant isolated fecal pellets (Vilas et al, 2010) (Table 3). The lowdiversity and preponderance of vertical traces in these facies suggests brackish-water conditions prevailed (Sisulack and Dashtgard, 2012) with the area being subject to periodic freshwater discharge (Pearson et al, 2012). Such biogenic reworking attests a highenergy environment in which sands were initially deposited and then colonized by different opportunistic invertebrates (Pearson et al, 2012).…”

Section: Facies Association 4: Tidal Channel Depositsmentioning

confidence: 99%

“…The lowdiversity and preponderance of vertical traces in these facies suggests brackish-water conditions prevailed (Sisulack and Dashtgard, 2012) with the area being subject to periodic freshwater discharge (Pearson et al, 2012). Such biogenic reworking attests a highenergy environment in which sands were initially deposited and then colonized by different opportunistic invertebrates (Pearson et al, 2012). Similarly, the occurrence of fossil leaves of Nothofagaceae and carbonaceous remains suggests freshwater input and slack-water periods.…”

Section: Facies Association 4: Tidal Channel Depositsmentioning

confidence: 99%

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Paleoenvironmental reconstruction of the coastal Monte Léon and Santa Cruz formations (Early Miocene) at Rincón del Buque, Southern Patagonia: A revisited locality

Raigemborn

Matheos

Krapovickas

et al. 2015

Journal of South American Earth Sciences

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a b s t r a c tSedimentological, ichnological and paleontological analyses of the Early Miocene uppermost Monte Le on Formation and the lower part of the Santa Cruz Formation were carried out in Rinc on del Buque (RDB), a fossiliferous locality north of Río Coyle in Santa Cruz Province, Patagonia, Argentina. This locality is of special importance because it contains the basal contact between the Monte L eon (MLF) and the Santa Cruz (SCF) formations and because it preserves a rich fossil assemblage of marine invertebrates and marine trace fossils, and terrestrial vertebrates and plants, which has not been extensively studied. Ã 90 m-thick section of the MLF and the SCF that crops out at RDB was selected for this study. Eleven facies associations (FA) are described, which are, from base to top: subtidaleintertidal deposits with Crassotrea orbignyi and bioturbation of the Skolithos-Cruziana ichnofacies (FA1); tidal creek deposits with terrestrial fossil mammals and Ophiomorpha isp. burrows (FA2); tidal flat deposits with Glossifungites ichnofacies (FA3); deposits of tidal channels (FA4) and tidal sand flats (FA5) both with and impoverish Skolithos ichnofacies associated; marsh deposits (FA6); tidal point bar deposits recording a depauperate mixture of both the Skolithos and Cruziana ichnofacies (FA7); fluvial channel deposits (FA8); fluvial point bar deposits (FA9); floodplain deposits (FA10); and pyroclastic and volcaniclastic deposits of the floodplain where terrestrial fossil mammal remains occur (FA11).The transition of the MLFeSCF at RDB reflects a changing depositional environment from the outer part of an estuary (FA1) through the central (FA2e6) to inner part of a tide-dominated estuary (FA7). Finally a fluvial system occurs with single channels of relatively low energy and low sinuosity enclosed by a broad, low-energy floodplain dominated by partially edaphized ash-fall, sheet-flood, and overbank deposits (FA8e11). Pyroclastic and volcaniclastic materials throughout the succession must have been deposited as ash-fall distal facies in a fluvial setting and also were carried by fluvial streams and redeposited in both estuarine and fluvial settings. These materials preserve most of the analyzed terrestrial fossil mammals that characterize the Santacrucian age of the RDB's succession. Episodic sedimentation under volcanic influence, high sedimentation rates and a relatively warm and seasonal climate are inferred for the MLF and SCF section.Lateral continuity of the marker horizons at RDB serve for correlation with other coastal localities such as the lower part of the coastal SCF south of Río Coyle (~17.6e17.4 Ma) belonging to the Estancia La Costa Member of the SCF.

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Section: Facies Association 2: Tidal Creek Depositsmentioning

confidence: 99%

Section: Facies Association 4: Tidal Channel Depositsmentioning

confidence: 99%

Section: Facies Association 4: Tidal Channel Depositsmentioning

confidence: 99%

Section: Facies Association 4: Tidal Channel Depositsmentioning

confidence: 99%

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Paleoenvironmental reconstruction of the coastal Monte Léon and Santa Cruz formations (Early Miocene) at Rincón del Buque, Southern Patagonia: A revisited locality

Raigemborn

Matheos

Krapovickas

et al. 2015

Journal of South American Earth Sciences

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“…It is a good indicator of firmgrounds, stiffground (softgrounds) and hardgrounds (Myrow 1995;MacEachern and Burton 2000;Savrda et al 2001;Malpas et al 2005;MacEachern et al 2007b;Knaust 2009;Pearson et al 2012). It is usually found in oxygenated substrates Pruss and Bottjer 2004;Uchman 2004, 2010;Giannetti and McCann 2010).…”

Section: Thalassinoides Ichnoassociation (Ia 3)mentioning

confidence: 99%

Trace fossils from the Lower Muschelkalk of Raciborowice Górne (North Sudetic Synclinorium, SW Poland) and their palaeoenvironmental interpretation

Chrząstek¹

2013

Acta Geologica Polonica

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The following trace fossils have been recognised in the Lower Muschelkalk of Raciborowice Gorne (North Sudetic Synclinorium, SW Poland): Archaeonassa fossulata, Balanoglossites triadicus, ?Gastrochaenolites isp., Lockeia isp., Palaeophycus tubularis, Palaeophycus isp., ?Planolites beverleyensis, P. montanus, Planolites isp., ?Protovirgularia isp., Rhizocorallium commune var. auriforme, R. commune var. irregulare, R. jenense, Skolithos linearis, Thalassinoides suevicus and Trypanites weisei. Coprolites and an unidentified trace fossil A are also described. The trace fossils allow the discrimination of five ichnoassociations in the Raciborowice Gorne section: (IA 1) Rhizocorallium- Pholeus, (IA 2) Rhizocorallium-Palaeophycus, (IA 3) Thalassinoides, (IA 4) Trypanites-Balanoglossites and (IA 5) Planolites-Palaeophycus. The Lower Muschelkalk succession was deposited on a shallow carbonate ramp affected by frequent storms. Deposition commenced with sedimentation in a restricted lagoon on the inner ramp with a short episode of sabkha formation. It continued on the middle and outer ramp and then on a skeletal shoal of the outer ramp and in an open basin. Ichnoassociation IA 5 is related to a maximum transgression that commenced with the deposition of the Spiriferina Bed and which probably marked the opening of the Silesian-Moravian Gate. The basin underwent two shallowing episodes, as evidenced by ichnoassociations IA 3-IA 4, resulting in the formation of hardgrounds. Bathymetric changes in the Raciborowice Gorne section correspond well with a general transgressive trend in the Germanic Basin.

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An integrated approach to understanding the depositional environment and organic matter enrichment factor in Carboniferous source rocks, Junggar Basin, NW China

Tao

Qiu

et al. 2018

Geological Journal

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Multiple indicators (trace fossils, trace metals, and δ 13 C org ) are used to assess the depositional environments and controls on organic carbon accumulation in the Lower Carboniferous Nanmingshui Formation, Junggar Basin, NW China. The majority of trace fossils belong to the Nereites ichnofacies, representing low energy, oxygen-poor, and relatively quiet bottom water environments. However, the shallow water trace fossil Planolites also appears in the strata, possibly reflecting variations in the bottom water oxygen contents of the turbidite succession. Redox proxies Th/U, V/Sc, and V/ (V + Ni) reveal variable redox conditions; most of the samples are in the range from suboxic to anoxic depositional conditions. Ni and Cu show a positive correlation with TOC, but U and V have no correlation with TOC, also suggesting the redox conditions were mainly suboxic. The P/Al and Cu/Al ratios of all samples are higher than those of Post-Archean Australian Shales (PAAS), and about two-thirds of the samples' Ba/Al and Ni/Al ratios are close to or higher than PAAS, suggesting the Early Carboniferous Junggar Basin had relatively high palaeo-productivity levels. δ 13 C org values average − 23.75‰, reflecting a mixture of terrestrial organic and marine organic matter. The indexes of Ba/Al, Cu/Al, Ni/Al, and δ 13 C org show good positive correlations with TOC, indicating the palaeo-productivity played an important role for the organic matter accumulation. On the other hand, the TOC correlates inversely with redox proxies (Th/U, V/Sc, and V/(V + Ni)), suggesting the preservation conditions (anoxia) are not the control factor of organic matters accumulation. Using these multiple approaches, our results indicate that productivity was the primary factor controlling organic matter accumulation.

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Ichnology, sedimentology, and sequence stratigraphy of outer-estuarine and coastal-plain deposits: Implications for the distinction between allogenic and autogenic expressions of the Glossifungites Ichnofacies

Cited by 32 publications

References 31 publications

Paleoenvironmental reconstruction of the coastal Monte Léon and Santa Cruz formations (Early Miocene) at Rincón del Buque, Southern Patagonia: A revisited locality

Paleoenvironmental reconstruction of the coastal Monte Léon and Santa Cruz formations (Early Miocene) at Rincón del Buque, Southern Patagonia: A revisited locality

Trace fossils from the Lower Muschelkalk of Raciborowice Górne (North Sudetic Synclinorium, SW Poland) and their palaeoenvironmental interpretation

An integrated approach to understanding the depositional environment and organic matter enrichment factor in Carboniferous source rocks, Junggar Basin, NW China

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