The significance of deep-water cryptic bioturbation in slope-channel massive sand deposits of the lower Rio Dell Formation, Eel River basin, California

Greene, Todd J.; Gingras, Murray K.; Gordon, Gregory S.; McKeel, Daniel R.

doi:10.1016/j.marpetgeo.2011.07.007

Cited by 10 publications

(4 citation statements)

References 47 publications

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“…Sedimentary environment: Archaeonassa, Lockeia, Skolithos and Protovirgularia are usually interpreted as characteristic of shallow environments, from nearshore to lower offshore (Uchman et al 2004a;Bradshaw 2010;Cabrera and Olivero 2011;Nagel et al 2013;Olivero and Cabrera 2013) but they also appear in deep-sea settings (Uchman 2004;Poursoltani et al 2007;Wetzel et al 2007;Zhang et al 2008;Nara and Ikari 2011;Uchman and Rattazzi 2011;Greene et al 2012). They are also known from marginal-marine and freshwater settings (McIlroy 2004b;Carmona et al 2009;Buatois and Mángano 2011;Gingras et al 2011;Melchor et al 2012b;Scott et al 2012).…”

Section: Planolites-palaeophycus Ichnoassociation (Ia 5)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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Section: Planolites-palaeophycus Ichnoassociation (Ia 5)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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“…Both Curvolithus (Fürsich and Heinberg, 1983;Ma ples and Suttner, 1990;Buatois and Mángano, 2011) Al though Macaronichnus may be re garded as most typ i cal of fore shore to shoreface (es pe cially up per shoreface) en vi ronments (Clifton and Thomp son, 1978), but it can oc cur also in lower shoreface (Curran, 1985;D'Alessandro and Uchman, 2007;Rygel et al, 2008;Vakarelov et al, 2012), off shore settings (Ma ples and Suttner, 1990;Pol lard et al, 1993) and even deep-sea (Greene et al, 2012). Uchman and Kenmayr (2004) and Bromley et al (2009) no ticed prob lems with en vi ron men tal in ter pre ta tion of Macaronichnus.…”

Section: Reconstruction Of the Middle Turonian Environment On The Basmentioning

confidence: 99%

Middle Turonian trace fossils from the Bystrzyca and Długopole sandstones

Chrząstek

2013

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The Mid dle Turonian sed i ments of the Nysa K³odzka Graben (Bystrzyca Sand stone in the Stara Bystrzyca out crop and the D³ugopole Sand stone in D³ugopole Górne Quarry) con tain trace fos sils, which in clude Curvolithus sim plex, ?Macaronichnus isp., Ophiomorpha nodosa, Ophiomorpha isp., Palaeophycus tubularis, Thalassinoides cf. paradoxicus, T. suevicus and Thalassinoides isp. The as sem blage of trace fos sils points to the prox i mal Cruziana ichnofacies, that char ac ter izes the dis tal lower shoreface and the ar che typal Cruziana ichnofacies, typ i cal of up per off shore set tings. The trace fos sils ev i dence implies that sed i men ta tion took place in a shal low ba sin with pe ri ods of a sud den sed i ment in put, good ox y gen a tion and nor mal sa lin ity. The Bystrzyca and D³ugopole sand stones are de pos its of the shal low epicontinental sea that were de pos ited between the fair-weather and storm-wave base, in the dis tal lower shoreface-up per off shore set ting. The Bystrzyca Sand stone is rec og nized as storm-orig i nated de pos its, whereas the D³ugopole Sand stone is prob a bly the part of prograding "ac cu mu lation ter race". The source of ma te rial for the sand stone was the East Sudetic Is land and prob a bly also the Orlica-Bystrzyca Up lift. The stud ied sand stones are re lated to a re gres sion that started in the early/mid dle Mid dle Turonian and caused a rel ative up lift of the sur round ing land.

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“…Traditionally, attention has been paid to particular characteristics of burrows impacting rock properties and reservoir quality such as density, tiering, size, orientation, architecture, fill, and lining 2 , 5 . With respect to lining, analyses have focused on its presence or absence 6 , 7 , and rarely on the petrophysical properties 8 , 9 . However, thickness and composition of the lining/mantle can be a major feature to be considered for some burrows, as is the case for Macaronichnus 10 .…”

Section: Introductionmentioning

confidence: 99%

“…Later, Gordon et al 13 analyzed the presence of Macaronichnus in the Bluesky Formation (Alberta, Canada) to determine that permeability was enhanced in those zones where Macaronichnus were abundant compared to similar non-bioturbated intervals. Then, Greene et al 8 pointed to differences between lining and filling, and Quaye et al 9 found that porosity and permeability in the burrow fill of Macaronichnus were higher than in the host sediment in the Funing Formation (Subei basin, China). These studies have shown the effect of Macaronichnus and its positive impact in spite of the general idea that bioturbation reduces permeability 4 .…”

Section: Introductionmentioning

confidence: 99%

The complex case of Macaronichnus trace fossil affecting rock porosity

Dorador

Rodrı́guez-Tovar

Miguez‐Salas

2021

Sci Rep

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Bioturbation is an important factor for reservoir quality due to the modification of host rock petrophysical properties (i.e., porosity, permeability, and connectivity). However, there is no predictable relationship between bioturbation and its effect on rock properties, due to the variability of the involved ichnological features. A detailed ichnological analysis is necessary to determine how bioturbation affects petrophysical properties in a bioturbated reservoir. Traditionally, ichnological features such as density, tiering, size, orientation, architecture, and fill, have been considered. However, other properties have been undervalued as is the case of lining. Here, we present a detailed study on the effects of Macaronichnus burrows, an ichnotaxon usually related to hydrocarbon exploration due to its high concentration in rock notably affecting petrophysical properties. Macaronichnus, a subhorizontal cylindrical burrow, is characterized by a well-defined and developed outer rim surrounding the tube core. Our data indicates a clear zonation in porosity according to burrow structure, with the lowest porosity in the tube core and higher values associated with the surrounded rim. This duality is determined by the tracemaker grain selective feeding activity and the consequent concentrated cementation. The organism concentrates the lighter minerals in the tube core fill during feeding, favoring post-depositional cementation during diagenesis and this results in lower porosity than the host rock. However, heavy minerals, mainly glauconite, are located in the rim, showing higher porosity. Our results support the view that ichnological analyses are essential to determine reservoir quality in bioturbated reservoirs, evidencing that other ichnological properties in addition to those traditionally considered must be evaluated.

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The significance of deep-water cryptic bioturbation in slope-channel massive sand deposits of the lower Rio Dell Formation, Eel River basin, California

Cited by 10 publications

References 47 publications

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

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

Middle Turonian trace fossils from the Bystrzyca and Długopole sandstones

The complex case of Macaronichnus trace fossil affecting rock porosity

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