Commensal worm traces and possible juvenile thalassinidean burrows associated with Ophiomorpha nodosa, Pleistocene, southern Brazil

Gibert, Jordi M. de; Netto, Renata Guimarães; Tognoli, Francisco Manoel Wohnrath; Grangeiro, Marcelo Engelke

doi:10.1016/j.palaeo.2005.07.008

Cited by 73 publications

(62 citation statements)

References 28 publications

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“…Altitude measurements were based on paleo indicators, consisting of the combination of sedimentary structures generated on the beach face, the occurrence of Ophiomorpha ichnofossils, and the vertical facies succession. As discussed by many authors (Frey et al 1978;Tomazelli et al 1982;Pollard et al 1993;Gibert et al 2006), Ophiomorpha nodosa forms a complex 3D structure that can be extend in depth. Vertical shafts with thick-lined, narrower and not pelleted burrows correspond to the best indication of water-sediment interface (Gibert et al 2006).…”

Section: Methodsmentioning

confidence: 99%

“…As discussed by many authors (Frey et al 1978;Tomazelli et al 1982;Pollard et al 1993;Gibert et al 2006), Ophiomorpha nodosa forms a complex 3D structure that can be extend in depth. Vertical shafts with thick-lined, narrower and not pelleted burrows correspond to the best indication of water-sediment interface (Gibert et al 2006). As this feature was not easily identifiable at the measured outcrops, the combination of Ophiomorpha with sand deposits containing low-angle planar cross-stratification was related to foreshore.…”

Section: Methodsmentioning

confidence: 99%

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High-Frequency Sequences in the Quaternary of Pelotas Basin (coastal plain): a record of degradational stacking as a function of longer-term base-level fall

Rosa

Barboza

Abreu³

et al. 2017

Braz. J. Geol.

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ABSTRACT:The aim of this work was to analyze the sedimentary record of the coastal plain of Pelotas Basin, placing it in the context of temporal and spatial scales, and proposing a stratigraphic hierarchical framework. The coastal plain, located in southern Brazil and in northern Uruguay, is mainly formed by four Quaternary barrier-lagoon systems. Three of these systems were studied through the integration of surface and subsurface data (geomorphological and topographical mapping, outcrops description, geoprocessing, dating and Ground Penetrating Radar -GPR -records) and interpreted as the preserved, onshore portion of depositional sequences mainly controlled by glacioeustatic cycles of about 100 kyr. The stacking pattern comprising these sequences is progradational with seaward downsteping (highest sea-levels measured: 9.5, 8 and 3 m, respectively), comprehending a degradational sequence set, or the regressive/ falling stage systems tract of a higher order depositional sequence identified in seismic sections, with about 0.5 Ma. The youngest sequence has diachronous systems tracts -while some sectors have already transitioned from the transgressive to the highstand/falling stage systems tract, others are still under a transgressive context. It indicates that, in this time and scale, the sea level is not the main control of coastal evolution, and autogenic factors are fundamental in the run of geological record. KEYWORDS:Barrier-Lagoon; Glacioeustasy; Diachronism of Systems Tracts; Ground Penetrating Radar; Rio Grande do Sul coastal evolution. RESUMO:

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Section: Methodsmentioning

confidence: 99%

Section: Methodsmentioning

confidence: 99%

High-Frequency Sequences in the Quaternary of Pelotas Basin (coastal plain): a record of degradational stacking as a function of longer-term base-level fall

Rosa

Barboza

Abreu³

et al. 2017

Braz. J. Geol.

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“…Ophiomorpha is pro duced by deca pod crus ta ceans, mainly callianassid shrimps; cray fish and crabs are also con sid ered as tracemakers (Frey et al, 1978;Gibert et al, 2006). Mod ern ana logues of the Ophiomorpha pro duc ers in clude Callichirus major (for mer Callianassa ma jor), Protocallianassa, Axius and Neotrypaea (Frey et al, 1978;Curran, 1984;Curan and White, 1991;Miller and Curran, 2001;Savrda et al, 2010).…”

Section: Description Of Trace Fossilsmentioning

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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“…The stratigraphic record left by the trace-makers is of special interest because of their adaptation to particular palaeoecological and depositional conditions, which make them very useful for environmental assessments, as well as for palaeobiological, neoichnological and evolutionary palaeoecological research; see de Gibert et al (2006) for a review. Further support to these applications is provided by comparisons with modern analogous burrows of thalassinoidean crustaceans.…”

mentioning

confidence: 99%

Environmental significance of Ophiomorpha in a transgressive–regressive sequence of the Spitsbergen Paleocene

2016

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Commensal worm traces and possible juvenile thalassinidean burrows associated with Ophiomorpha nodosa, Pleistocene, southern Brazil

Cited by 73 publications

References 28 publications

High-Frequency Sequences in the Quaternary of Pelotas Basin (coastal plain): a record of degradational stacking as a function of longer-term base-level fall

High-Frequency Sequences in the Quaternary of Pelotas Basin (coastal plain): a record of degradational stacking as a function of longer-term base-level fall

Middle Turonian trace fossils from the Bystrzyca and Długopole sandstones

Environmental significance of Ophiomorpha in a transgressive–regressive sequence of the Spitsbergen Paleocene

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