Anatomy of a submarine channel system and related fan in a foramol/rhodalgal carbonate sedimentary setting: a case history from the Miocene syn-rift Sardinia Basin, Italy

Vigorito, Mario; Murru, Marco; Simone, Lucia

doi:10.1016/j.sedgeo.2004.10.003

Cited by 46 publications

(39 citation statements)

References 23 publications

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“…Tectonics largely controlled both the physiography Fig. 1 Geological-structural sketch-map of Sardinia and of the investigated area (modified from Vigorito et al 2005) of these sub-basins and the trend of sediment pathways, including the local formation of large submarine channelsystems (Vigorito et al 2005(Vigorito et al , 2006. One of these basins, the Santa Teresa Basin, is located in the Corsica-Sardinia junction area on the southern margin of the Western Bonifacio Straits.…”

Section: Geological Settingmentioning

confidence: 99%

Depositional model and paleodepth reconstruction of a coral-rich, mixed siliciclastic-carbonate system: the Burdigalian of Capo Testa (northern Sardinia, Italy)

Brandano

Tomassetti

Bosellini

et al. 2009

Facies

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This study presents a detailed facies analysis and paleodepth reconstruction of a coral-rich mixed siliciclastic-carbonate system Burdigalian in age, outcropping in the northern sector of Sardinia (Capo Testa). Excellent exposures of continuous sea-cliff outcrops around the southwestern and northeastern area of Capo Testa promontory allowed us to: (1) trace stratigraphic surfaces; (2) document stratal geometries; (3) discern details of the lithofacies and, (4) reconstruct the paleodepths of the different depositional environments. A total of seven sedimentary facies has been recognized and interpreted: siliciclastic conglomerate and coarse bioclastic sandstone (F1), fine- to medium-grained hybrid sandstone (F2, scleractinian coral domestone (F3), bioclastic packstone to floatstone with platy Porites (F4), red algae floatstone to rudstone (F5), larger benthic foraminifers (LBF) bioclastic rudstone floatstone in a packstone matrix (F6), molluscan floatstone in a bioclastic packstone matrix (F7). The investigated system is characterized by nearshore to shoreface deposits with a conspicuous terrigenous content that grades seaward into deeper zones where coral patch-reefs developed in association with adjacent areas colonized by seagrass meadows. The more distal facies are constituted by scattered encrusting tabular colonies of Porites in growth position occurring in a deeper and lower-energy environment. The paleodepth interval that is observed in the Capo Testa outcrop ranges from 0 to 50 m

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Section: Geological Settingmentioning

confidence: 99%

Depositional model and paleodepth reconstruction of a coral-rich, mixed siliciclastic-carbonate system: the Burdigalian of Capo Testa (northern Sardinia, Italy)

Brandano

Tomassetti

Bosellini

et al. 2009

Facies

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“…10). In some literature examples, gullies act as tributary channels that merge into large channels and submarine canyons (e.g., Hunt & Tucker 1993;Vigorito et al 2005;garcía et al 2006;Payros & Pujalte 2008). In our examples, seemingly no physical connection existed between the gullies and channels, although outcrop exposure is limited.…”

Section: Position Of Outcrop Occurrences Within a Channel-fan Systemmentioning

confidence: 60%

“…The architectural elements of the carbonate channelised system described above are present in many siliciclastic systems (e.g., Spinelli & Field 2001;gardner et al 2003;Posamentier & kolla 2003;klaucke et al 2004;Ó Cofaigh et al 2006), as well as in some carbonate deep-water systems (e.g., Braga et al 2001;Vigorito et al 2005Vigorito et al , 2006Payros et al 2007). Subaqueous sediment gravity flows are responsible for the transport and deposition of sediment in deep-water settings.…”

Section: Depositional Processes In Mixed Siliciclastic-carbonate Fan mentioning

confidence: 99%

“…2007). A few ancient examples of deep-water mass-emplaced temperate carbonate systems have been described from eastern Mediterranean localities (Braga et al 2001;Vigorito et al 2005;Puga-Bernabeu et al 2008), where submarine channels have cut temperate carbonate platforms at shallow depths, funnelling bioclastic shelf carbonate basinwards onto submarine fans.…”

Section: Introductionmentioning

confidence: 99%

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Mangarara Formation: Exhumed remnants of a middle Miocene, temperate carbonate, submarine channel‐fan system on the eastern margin of Taranaki Basin, New Zealand

Puga‐Bernabéu

Vonk

Nelson

et al. 2009

New Zealand Journal of Geology and Geophysics

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The middle Miocene Mangarara Formation is a thin (1-60 m), laterally discontinuous unit of moderately to highly calcareous (40-90%) facies of sandy to pure limestone, bioclastic sandstone, and conglomerate that crops out in a few valleys in North Taranaki across the transition from King Country Basin into offshore Taranaki Basin. The unit occurs within hemipelagic (slope) mudstone of Manganui Formation, is strati graphic ally associated with redeposited sandstone of Moki Formation, and is overlain by redeposited volcaniclastic sandstone of Mohakatino Formation. The calcareous facies of the Mangarara Formation are interpreted to be mainly mass-emplaced deposits having channelised and sheet-like geometries, sedimentary structures supportive of redeposition, mixed environment fossil associations, and stratigraphic enclosure within bathyal mudrocks and fiysch. The carbonate component of the deposits consists mainly of bivalves, larger benthic foraminifers (especially Amphistegina), coralline red algae including rhodoliths (Lithothamnion and Mesophyllum), and bryozoans, a warm-temperate, shallow marine skeletal association. While sediment derivation was partly from an eastern contemporary shelf, the bulk of the skeletal carbonate is inferred to have been sourced from shoal carbonate factories around and upon isolated basement highs (Patea-Tongaporutu High) to the south. The Mangarara sediments were redeposited within slope gullies and broad open submarine channels and lobes in the vicinity of the channel-lobe transition zone of a submarine fan system. Different phases of sediment transport and deposition (lateral-accretion and aggradation stages) are identified in the channel infilling. Dual fan systems likely co-existed, one dominating and predominantly siliciclastic in nature (Moki Formation), and the other infrequent and involving the temperate calcareous deposits of Mangarara Formation. The Mangarara Formation is an outcrop analogue for middle Miocene-age carbonate slope-fan deposits elsewhere in subsurface Taranaki Basin, New Zealand.

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“…Oligocene continental deposits (i.e., the Ussana Formation; Cherchi and Montadert, 1984;Cherchi et al, 2008) accumulated during the first stages of the basement dissection (syn-rift stage according to Casula et al, 2001) mainly in the southern parts of the Sardinia Graben where they pass, through a disconformity surface, to Miocene marine and terrigenous sediments. In the central-northern sectors, only very thin and discontinuous Lower Miocene continental deposits reached the deformed basement, but were rapidly enriched by open-marine biotic components (Cherchi et al, 2000;Funedda et al, 2000Funedda et al, , 2003Vigorito et al, 2005Vigorito et al, , 2006.…”

Section: Introductionmentioning

confidence: 99%

Displaced/re-worked rhodolith deposits infilling parts of a complex Miocene multistorey submarine channel: A case history from the Sassari area (Sardinia, Italy)

Murru

Bassi

Simone

2015

Sedimentary Geology

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Anatomy of a submarine channel system and related fan in a foramol/rhodalgal carbonate sedimentary setting: a case history from the Miocene syn-rift Sardinia Basin, Italy

Cited by 46 publications

References 23 publications

Depositional model and paleodepth reconstruction of a coral-rich, mixed siliciclastic-carbonate system: the Burdigalian of Capo Testa (northern Sardinia, Italy)

Depositional model and paleodepth reconstruction of a coral-rich, mixed siliciclastic-carbonate system: the Burdigalian of Capo Testa (northern Sardinia, Italy)

Mangarara Formation: Exhumed remnants of a middle Miocene, temperate carbonate, submarine channel‐fan system on the eastern margin of Taranaki Basin, New Zealand

Displaced/re-worked rhodolith deposits infilling parts of a complex Miocene multistorey submarine channel: A case history from the Sassari area (Sardinia, Italy)

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