Aspects of North Atlantic Paleo-Oceanography

Gradstein, Felix M.; Jansa, L. F.; Srivastava, S. P.; Williamson, M. A.; Carter, G. Bonham; Stam, B.

doi:10.1130/dnag-gna-i1.349

Cited by 15 publications

(9 citation statements)

References 54 publications

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“…14(A)); (I) Major plate-tectonic reconfigurations in the Atlantic and western Tethys domain (see Table 4 for a detailed list of reconfigurations). For an overview of paleo-climatic, paleooceanographic and paleo-biogeographic controls on depositional systems on circum-Atlantic continental shelves, see Gradstein et al (1990). (J) Magnetic polarity chronozones in the Central and northern Atlantic according to Hardenbol et al (1998); (K) Standard chronostratigraphy according to Berggren et al (1995), Gradstein et al (1994), and Hardenbol et al (1998) (Vogt, 1973); JMQZ-Jurassic Magnetic Quiet Zone; BMA-Brunswick Magnetic Anomaly ; BSMA-Blake Spur Magnetic Quiet Zone (Vogt, 1973); S1-west African magnetic anomaly (Roeser, 1982).…”

Section: Sediment Flux and Paleobathymetrymentioning

confidence: 99%

“…1) of northern Morocco and that the Tiz-n-Test Fault System and the Hayes Fracture Zone are not connected. The Hayes Fracture Zone represents a flow line (Pitman & Talwani, 1972), which can be traced from the East Coast Magnetic Anomaly (Vogt, 1973) offshore Nova Scotia on the North American continental margin throughout the Central Atlantic to the S1 magnetic anomaly 1-38W of the onshore termination of the Tiz-n-Test Fault System (Gradstein et al, 1990;Klitgord & Schouten, 1986). Depending on the degree of left-lateral strike-slip shear in the Triassic Central to North Atlantic rift zone, the southern Nova Scotian shelf (e.g.…”

Section: Geological Settingmentioning

confidence: 99%

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Quantitative Meso-/Cenozoic development of the eastern Central Atlantic continental shelf, western High Atlas, Morocco

Zühlke

Bouaouda

Ouajhain

et al. 2004

Marine and Petroleum Geology

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Section: Sediment Flux and Paleobathymetrymentioning

confidence: 99%

Section: Geological Settingmentioning

confidence: 99%

Quantitative Meso-/Cenozoic development of the eastern Central Atlantic continental shelf, western High Atlas, Morocco

Zühlke

Bouaouda

Ouajhain

et al. 2004

Marine and Petroleum Geology

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“…Ziegler (1988 * ) shows maps that bracket the period of interest; he indicates a shallow to deep marine setting for the Carson and Salar Basins adjacent to the emergent area to the west. Gradstein et al (1990, Fig. 8.7d) indicated a deepmarine depositional environment for the Middle and Late Jurassic but did not explain this interpretation, as their text only discussed a setting of marginal to shallow marine, as has been presented above.…”

Section: Rifting and Anoxia In A Restricted Settingmentioning

confidence: 91%

Is There a Viable Petroleum System in the Carson and Salar Basins, Offshore Newfoundland?

Wielens

Jauer

Williams

2006

Journal of Petroleum Geology

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The Carson Basin on the eastern Grand Banks of Newfoundland has been penetrated by four wells ‐ Bonnition H‐32, Osprey H‐84, Skua E‐41 and St. George J‐55 ‐ which were drilled along its western margin. The adjacent deeper‐water Salar Basin to the east remains undrilled with the exception of ODP holes 1276A and 1277. The Carson Basin wells contain a thick Mesozoic and Cenozoic sedimentary section which includes reservoirs and seals; but source rocks, such as those present in the adjacent Jeanne d'Arc Basin, have not been found. To assess the petroleum system, well samples were collected to provide Rock Eval and vitrinite reflectance data, and analysed biostratigraphically to obtain ages and depositional environments. These analyses indicate that a Late Jurassic source rock, similar to the Egret Member (of the Rankin Formation) of the Jeanne d'Arc Basin, may be present in the deeper‐water, distal parts of the Carson and Salar Basins; this is based on a regional palaeotectonic reconstruction, together with gravity and magnetic data, including sea‐floor spreading magnetic anomalies. We interpret the absence of the Egret Member in the four wells to reflect the wells' locations rather than the Member's absence from the two basins. An integrated 4D model of the Carson Basin was built from biostratigraphy and seismic surfaces, to which an Egret‐like source rock was added. The modelling showed that significant volumes of hydrocarbons could have been generated, mostly during the main Late Cretaceous drifting event in the area. Hence, significant volumes of hydrocarbons could be present in the Carson and Salar Basins, mainly in stratigraphic traps in Early Cretaceous clastic reservoirs.

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“…The detrital and coarse‐grained nature of the Jurassic and Cretaceous siliciclastic sediments indicate a continental to subcontinental environment (i.e. water depth of 0–100 m) during the entire syn‐rift and the early post‐rift time (Gradstein et al ., ). The water column starts increasing during the Cenozoic with deposition of fine‐grained siliciclastics and carbonates.…”

Section: Quantifying Subsidencementioning

confidence: 97%

“…The post‐Palaeozoic evolution of the Orphan Basin is clearly controlled by the opening of the Atlantic Ocean, and needs to be placed in a regional context by comparing its subsidence history with other rift basins along northern Atlantic margins. A substantial amount of work, quantifying subsidence in the eastern Canadian margin and the conjugate western European margin, already exists and is available in the literature (Cloetingh et al ., ; Gradstein et al ., ; Hiscott et al ., ; Cloetingh & Kooi, ; Hall & White, ; Stapel et al ., ; Clift & Turner, ; Ceramicola et al ., ).…”

Section: Quantifying Subsidencementioning

confidence: 99%

Rifting and pre‐rift lithosphere variability in the Orphan Basin, Newfoundland margin, Eastern Canada

2014

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The Orphan Basin, lying along the Newfoundland rifted continental margin, formed in Mesozoic time during the opening of the North Atlantic Ocean and the breakup of Iberia/Eurasia from North America. To investigate the evolution of the Orphan Basin and the factors that governed its formation, we (i) analysed the stratigraphic and crustal architecture documented by seismic data (courtesy of TGS), (ii) quantified the tectonic and thermal subsidence along a constructed geological transect, and (iii) used forward numerical modelling to understand the state of the pre-rift lithosphere and the distribution of deformation during rifting. Our study shows that the pre-rift lithosphere was 200-km thick and rheologically strong (150-km-thick elastic plate) prior to rifting. It also indicates that extension in the Orphan Basin occurred in three distinct phases during the Jurassic, the Early Cretaceous and the Late Cretaceous. Each rifting phase is characterized by a specific crustal and subcrustal thinning configuration. Crustal deformation initiated in the eastern part of the basin during the Jurassic and migrated to the west during the Cretaceous. It was coupled with a subcrustal thinning which was reduced underneath the eastern domain and very intense in the western domains of the basin. The spatial and temporal distribution of thinning and the evolution of the lithosphere rheology through time controlled the tectonic, stratigraphic and crustal architecture that we observe today in the Orphan Basin. EAGE sedimentary basins. Using 2D seismic data (courtesy of TGS), tectonic subsidence analysis and 2D numerical modelling, we attempt to (i) determine and quantify the syn-and post-rift subsidence in the Orphan Basin, (ii) describe the spatial and temporal distribution of the various rifting phases and the related crustal and subcrustal amounts of thinning, and (iii) investigate the thickness and strength of the lithosphere prior to, and during, rifting.

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Aspects of North Atlantic Paleo-Oceanography

Cited by 15 publications

References 54 publications

Quantitative Meso-/Cenozoic development of the eastern Central Atlantic continental shelf, western High Atlas, Morocco

Quantitative Meso-/Cenozoic development of the eastern Central Atlantic continental shelf, western High Atlas, Morocco

Is There a Viable Petroleum System in the Carson and Salar Basins, Offshore Newfoundland?

Rifting and pre‐rift lithosphere variability in the Orphan Basin, Newfoundland margin, Eastern Canada

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