Large-scale progradation, demise and rebirth of a high-relief carbonate platform (Triassic, Lombardy Southern Alps, Italy)

Berra, Fabrizio; Jadoul, Flavio; Binda, Marco; Lanfranchi, Alessandro

doi:10.1016/j.sedgeo.2011.05.002

Cited by 10 publications

(19 citation statements)

References 25 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…The depositional architecture of the Lombardy platforms (Assereto & Casati, 1965;Assereto & Kendall, 1971;Jadoul et al, 1992;Berra, 2007) reflects different evolutionary stages (Berra et al, 2011): an inception stage followed by an aggradational stage with increasing water depth in the basins and a later progradational stage. The flat-topped Esino Limestone platform reaches a maximum thickness of about 800 m and rapidly pinches out basinward with steep slopes (dipping about 35°) consisting of clinostratified breccias, with a platform to basin relief that reaches about 600-700 m (Berra et al, 2011). This evolution reflects changes in accommodation space, which control the type and storage sites of the sediments produced by the carbonate factory as well as the geometry of the carbonate platform.…”

Section: Geological Settingmentioning

confidence: 99%

“…Sedimentary dikes often penetrate for several meters downwards in the underlying platform, filling paleokarst pockets and fractures with terra-rossa sediments Binda, 2010;Berra et al, 2011;Vola & Jadoul, 2014). Some major, laterally continuous red paleosols represent marker horizons in the lower and middle part of the Calcare Rosso (Vola & Jadoul, 2014).…”

Section: Type 3) Peritidal-supratidal Carbonates Affected By Multiplementioning

confidence: 99%

“…Inner platform facies at the core of the platform, instead, rest upon several hundred meters of peritidal carbonates, typically aggrading form the platform inception to the final subaerial exposure (Jadoul et al, 2002;Berra et al, 2011).…”

Section: Relationships Between Facies and Thicknessmentioning

confidence: 99%

“…sediments are stored on the platform top) whereas during progradation resedimented limestones are more common in the basin (Berra et al, 2011).…”

mentioning

confidence: 99%

“…The amplitude of the sea-level fall is still debated: report the existence of karstic cavities up to 30-60 m from the platform top, Mutti (1994) suggests a sea-level drop of about 80 m, whereas new data (Binda, 2010) suggest a drop of around 20 m. The latter figure is compatible with a eustatic sea-level fall (limited to few tens of meters in a greenhouse interval as the Triassic), whereas the interpretation of Mutti (1994) requires a tectonic contribution (a 80 m eustatic sea-level drop is larger than any documented sea-level fall in the Triassic). Detailed sedimentological studies show that the different facies of the Calcare Rosso on 6 the platform top of the Esino Limestone are compatible with a sea-level fall not exceeding 20 m (Jadoul et al, 1992;Berra, 2007;Berra et al, 2011).…”

mentioning

confidence: 99%

See 4 more Smart Citations

Does compaction-induced subsidence control accommodation space at the top of prograding carbonate platforms? Constraints from the numerical modelling of the Triassic Esino Limestone (Southern Alps, Italy)

Berra

Carminati

Jadoul

et al. 2016

Marine and Petroleum Geology

Self Cite

View full text Add to dashboard Cite

Highlights• Various regressive facies are described on a high-relief carbonate platform.• Facies distribution of regressive facies documents accommodation changes.• Accommodation increases toward the prograding edge of the carbonate platform.• Numerical modelling tests compaction of basinal sediments to create accommodation.• Compaction of basinal sediments may control accommodation changes on the platform top. KeywordsCarbonate platform, Triassic, paleokarst, terra rossa soil, accommodation, differential compaction, numerical modelling 2 AbstractThe demise of the high-relief, steep-slope, prograding Ladinian-Early Carnian carbonate platforms of the Esino Limestone (Central Southern Alps of Italy) is marked by subaerial exposure of the platform top associated with different erosional (mainly karst-related), depositional and diagenetic processes (Calcare Rosso). The exposure-related deposits consist of three major facies associations: 1) residual soils with thin lenses of conglomerates with black pebbles, and, locally, weathered vulcanites; 2) chaotic breccia lenses irregularly distributed in the uppermost part of the Esino Limestone carbonate platform, interpreted as collapse breccias in karstic setting: 3) inter-supratidal carbonate cycles with dissolution and development of paleosols and tepee structures.Facies distribution follows the sub-environments of the underlying Esino Limestone. Facies 1 and 2 typically characterize the core of the platform, covering the underlying inner platform facies. Facies 3 instead develops toward the edge of the platform, above reef-upper slope facies of the prograding facies of the Esino Limestone. The thickness of facies 3 decreases toward the core of the platform.Facies distribution reflects differences in the accommodation space and sedimentary processes from the rim (highest accommodation, favouring the deposition of peritidal-supratidal carbonates) to the core (reduced accommodation, causing pedogenesis and karstification) of the carbonate system.The observed thickness changes may be controlled by different factors: 1) syndepositional tectonics, 2) subsidence induced by magmatic activity or 3) differential subsidence controlled by the stratigraphic architecture of the Esino Limestone platform and adjoining basins. As evidence of tectonics was not observed and the presence of volcanic bodies is only documented tens of km away from the study area, the scenario involving the creation of accommodation space by compaction of the basinal sediments (resedimented, fine-grained calciturbidites) during the progradation of the carbonate platform is here investigated. Numerical modelling was performed to verify the compatibility of compaction-induced subsidence with the observed depositional architecture. The models were built to simulate the architectural evolution of the platform by progressively adding layers from deepest to shallowest, while compacting the underlying sediments, in order to evaluate compaction-induced subsidence (and accommodation space for the Calcare Rosso) after...

show abstract

Section: Geological Settingmentioning

confidence: 99%

Section: Type 3) Peritidal-supratidal Carbonates Affected By Multiplementioning

confidence: 99%

Section: Relationships Between Facies and Thicknessmentioning

confidence: 99%

“…sediments are stored on the platform top) whereas during progradation resedimented limestones are more common in the basin (Berra et al, 2011).…”

mentioning

confidence: 99%

mentioning

confidence: 99%

See 3 more Smart Citations

Does compaction-induced subsidence control accommodation space at the top of prograding carbonate platforms? Constraints from the numerical modelling of the Triassic Esino Limestone (Southern Alps, Italy)

Berra

Carminati

Jadoul

et al. 2016

Marine and Petroleum Geology

Self Cite

View full text Add to dashboard Cite

show abstract

Demise of the Middle Jurassic carbonate platform: Responses to sea‐level fall in the Qiangtang Basin, Eastern Tethys

Gao

et al. 2020

Geological Journal

View full text Add to dashboard Cite

Many studies have been focused on the development of carbonate platforms, however, the controlling factors of their evolution are still unclear. The QTKT1 well, drilled in 2016 by the Chengdu Center of the China Geological Survey at the Northern Qiangtang Depression, has allowed further studies of Jurassic environments and resources in the Eastern Tethys. In this study, we investigate variations in spectral gamma‐ray logs and CaCO3 content and perform a cyclostratigraphic analysis in the Xiali mudstones and Buqu limestones and Xiali mudstone to analyse causes for the demise of the Middle Jurassic carbonate platform in the Qiangtang Basin. The concentrations of Th, K, U, and Th/U and Th/K ratios increase suddenly from the Buqu Formation to the Xiali Formation, suggesting increased terrigenous input and/or decreased carbonate production rates. Cyclostratigraphic analysis detects the existence of astronomical cycles and an abrupt change in sediment accumulation rates within the target intervals. Combined with sedimentary facies analysis, our research suggests that the demise of the Middle Jurassic carbonate platform may have been caused by terrigenous detrital inputs into the Qiangtang Basin. High‐frequency sea‐level fluctuations increased terrestrial inputs and carbonate production rates at the orbital scale. The regression happened before the facies change and controlled terrestrial inputs at a larger scale, which resulted in the demise of the carbonate platforms. Contrary to the Western Tethys, a regression took place from the Bathonian to Callovian ages in the Qiangtang Basin, Eastern Tethys, which increased the exposure levels. The large exposure led to significant erosion, accelerated detrital input from the land to the Northern Qiangtang Depression, reduced carbonate production as well as resulted in the demise of the Buqu carbonate platform. The relative sea‐level fall is mainly the result of the regional tectonism during this period.

show abstract

Palaeosoils and Relict Soils

Cremaschi

Trombino

Zerboni

2018

Interpretation of Micromorphological Features of Soils and Regoliths

View full text Add to dashboard Cite

Large-scale progradation, demise and rebirth of a high-relief carbonate platform (Triassic, Lombardy Southern Alps, Italy)

Cited by 10 publications

References 25 publications

Does compaction-induced subsidence control accommodation space at the top of prograding carbonate platforms? Constraints from the numerical modelling of the Triassic Esino Limestone (Southern Alps, Italy)

Does compaction-induced subsidence control accommodation space at the top of prograding carbonate platforms? Constraints from the numerical modelling of the Triassic Esino Limestone (Southern Alps, Italy)

Demise of the Middle Jurassic carbonate platform: Responses to sea‐level fall in the Qiangtang Basin, Eastern Tethys

Palaeosoils and Relict Soils

Contact Info

Product

Resources

About