Rifting process and thermal evolution of the continental margin of Eastern Canada determined from subsidence curves

Royden, L.; Keen, C. E.

doi:10.1016/0012-821x(80)90216-2

Cited by 748 publications

(443 citation statements)

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“…The fo rward modelling approach is based on litho spheric stretching assumptions (McKenzie, 1978;Royden and Keen, 1980). The fa ctor 8 was used for crustal stretching and fJ fo r subcrustal stretch ing.…”

Section: Numerical Modelmentioning

confidence: 99%

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Temporal and spatial variations in tectonic subsidence in the Iberian Basin (eastern Spain): inferences from automated forward modelling of high-resolution stratigraphy (Permian–Mesozoic)

et al. 1998

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By subsidence analysis on eighteen surface sections and 6 wells, which cover large pati of the Iberian Basin (E Spain) and which are marked by high-resolution stratigraphy of the Permian, Triassic, Jurassic and Cretaceous, we quantify the complex Permian and Mesozoic tectonic subsidence history of the basin. Backstripping analysis of the available high resolution and high surface density of the database allows to quantify spatial and temporal patterns of tectonically driven subsidence to a much higher degree than previous studies, The sections and wells have also been forward modelled with a new 'automated' modelling technique, with unlimited number of stretching phases, in order to quantify variations in timing and magnitude of rifting. It is demonstrated that the tectonic subsidence history in the Iberian Basin is characterized by pulsating periods of stretching intermitted by periods of relative tectonic quiescence and thermal subsidence. The number of stretching phases appears to be much larger than found by earlier studies, showing a close match with stretching phases found in other patis of the Iberian Peninsula and allowing a clear correlation with discrete phases in the opening of the Tethys and Atlantic.

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Section: Numerical Modelmentioning

confidence: 99%

“…For a rift phase, either uniform lithospheric stretching (fJ = 8) (McKenzie, 1978) or two-layered stretching can be used (fJ =1= 8) (e.g. Royden and Keen, 1980). For…”

Section: Numerical Modelmentioning

confidence: 99%

Temporal and spatial variations in tectonic subsidence in the Iberian Basin (eastern Spain): inferences from automated forward modelling of high-resolution stratigraphy (Permian–Mesozoic)

et al. 1998

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“…However, simple shear may be distributed over the lithosphere in such a way that the overall picture is one of pure shear (Reston, 1990), and sur face data are not totally conclusive about the type of shear stress. High subcrustal geothermal gradi ents prevailed during the early phases of extension, requiring a multilayered stretching model (Royden and Keen, 1980) instead of a McKenzie model. The trace of the faults is arcuate (Fig.…”

Section: The Geometry Of the Iberian Basin Boundary Faultsmentioning

confidence: 99%

Origin of the Permian-Triassic Iberian Basin, central-eastern Spain

Arché¹,

López-Gómez²

1996

Tectonophysics

130

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The Iberian Basin was an intracratonic rift basin in central-eastern Spain developed since Early Permian times. The basin boundary faults were normal, listric faults controlling an asymmetric extension propagating northeast with time.Hercynian or older lineaments controlled the orientation of the Iberian Basin and extension was accommodated basically in the hanging wall block by the formation of secondary grabens and a central high. The basin was related with the coeval Ebro, Catalan and Cuenca-Mancha Basins and their connections are discussed.Subsidence curves show that the Early Permian-Early Jurassic period of extension can be subdivided into three rifting episodes and a flexural one. Extension factor increases from 1.17 in the northwest to 1.29 near the Mediterranean coast.The increasing extension rate was accommodated by transfer faults trending NNE-SSW, more important in the Levante area. The rift evolution is intermittent and seems to reflect distinct stress fields.The collapse of the late Hercynian orogen and related increased heat flux, extension and rifting is the most probable origin of the Iberian Basin and related basins. The origin of the Catalan and the Valencia-Prebetic Basins is related to the southwards migration of the Hesse-Burgundy Rift along the eastern margin of the Iberian Microplate.

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“…. "Several innovative theoretical models (McKenzie, 1978;Royden et al, 1980;Royden and Keen, 1980; Sclater & Christie, 1981;Turcotte, 1981) have proposed mechanisms for lithospheric extension and have attempted to evaluate quantitatively the mechanical and thermal consequences of each model in terms of histories of margin and basin subsidence. These models may have a potential practical value in predicting the thermal history and thus the degree of.hydrocarbon maturity in sedimentary basins formed in response to a lithospheric extension (Royden & Keen, 1980;Royden et al, 1980;Sclater & Christie, 1980).…”

mentioning

confidence: 99%

“…These models may have a potential practical value in predicting the thermal history and thus the degree of.hydrocarbon maturity in sedimentary basins formed in response to a lithospheric extension (Royden & Keen, 1980;Royden et al, 1980;Sclater & Christie, 1980). However, a rigorous description of the deep crustal structure beneath a cratonic sedimentary basin or a passive continental margin that would provide sufficient data to quantify the extension in order to constrain these models has been lacking as has a comprehensive study of the geological and thermal history of basins that have evolved in response to lithospheric extension.…”

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confidence: 99%

A seismic refraction and reflection study of the continent-ocean transition beneath the north Biscay margin

1982

Deep Sea Research Part B. Oceanographic Literature Review

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(Ziegler, 1978 and this volume) and the adjacent margins of the North Atlantic Ocean.It has become clear that extension may also occur in strike slip and convergent settings (Bally & Snelson, 1979), and examples include the Western Mediterranean (Biju-Duval et al., 1977) , the Pannonian Basin (Royden & Sclater, 1981) and the Great Basin (Profett, 1977).The occurrence of crustal extension, expressed by rifting, in these different geological settings emphasises that very little is known of the mechanisms producing the rifting process, including its initiation, which cause the profound changes in crustal structure revealed by attenuation and ultimately by the formation of a spreading ocean basin. . "Several innovative theoretical models (McKenzie, 1978;Royden et al., 1980;Royden and Keen, 1980; Sclater & Christie, 1981;Turcotte, 1981) have proposed mechanisms for lithospheric extension and have attempted to evaluate quantitatively the mechanical and thermal consequences of each model in terms of histories of margin and basin subsidence. These models may have a potential practical value in predicting the thermal history and thus the degree of.hydrocarbon maturity in sedimentary basins formed in response to a lithospheric extension (Royden & Keen, 1980;Royden et al., 1980;Sclater & Christie, 1980). However, a rigorous description of the deep crustal structure beneath a cratonic sedimentary basin or a passive continental margin that would provide sufficient data to quantify the extension in order to constrain these models has been lacking as has a comprehensive study of the geological and thermal history of basins that have evolved in response to lithospheric extension.In this paper, we present some of the results of a detail seismic refraction and reflection study of the northern or Armorican margin of the Bay of Biscay. The study examined the deep crustal structure (Montadert, Roberts et al., 1977;Montadert et al. , 1979). -The overall tectonic style consists of tilted and rotated fault blocks whose downthrow is consistently down toward the ocean. The pattern of faults is probably en-echelon or anastomosing. Many of the fault blocks are bounded by listric normal faults ( Fig. 2a) with throws of up to 3000 m. The listric faults flatten out with depth close to the top of a sub-horizontal group of reflectors called 'S' (Fig. 2b). Comparison with early refraction data suggested that this reflector corresponded to the boundary between a 4.9 and 6.3 km.sec ^ layer (Avedik & Howard, 1979). De Charpal et al. (1979 and Montadert et al. (1979) interpreted the 6.3 km. sec ^ refractor as the boundary between the upper brittle and the lower ductile continental crust. Refraction data on the shelf (Holder & Bott, 1971) suggested that the Moho shoaled from 25 km beneath the shelf break to 12 km near the continent-ocean transition where, from the available refraction data, the observed ductile crust was estimated to be only 3 km -2-in thickness. These early results showed that the observed thinning of the crust could not be ful...

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Rifting process and thermal evolution of the continental margin of Eastern Canada determined from subsidence curves

Cited by 748 publications

References 25 publications

Temporal and spatial variations in tectonic subsidence in the Iberian Basin (eastern Spain): inferences from automated forward modelling of high-resolution stratigraphy (Permian–Mesozoic)

Temporal and spatial variations in tectonic subsidence in the Iberian Basin (eastern Spain): inferences from automated forward modelling of high-resolution stratigraphy (Permian–Mesozoic)

Origin of the Permian-Triassic Iberian Basin, central-eastern Spain

A seismic refraction and reflection study of the continent-ocean transition beneath the north Biscay margin

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