The Continental Margin of Morocco: Seismic Sequences, Structural Elements and Geological Development

Hinz, K.; Dostmann, H; Fritsch, J.

doi:10.1007/978-3-642-68409-8_3

Cited by 119 publications

(182 citation statements)

References 27 publications

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“…Interval velocities from wide-angle seismic refraction data provide the nearest velocity information , yellow stars Fig. 1) and were supplemented by velocity data deducted from sonobuoy (station 1, Hinz and Krause, 1982) and ocean bottom hydrophones (OBH3, 4, 5, Ritzmann, 1998) experiment observations. The velocity model from station 1 divided the sediments into two units and the velocity model at OBH 3, 4 and 5, divided deep-sea sediments into three or four units.…”

Section: Sediment Thickness Estimatesmentioning

confidence: 99%

Deep-sea pre-glacial to glacial sedimentation in the Weddell Sea and southern Scotia Sea from a cross-basin seismic transect

et al. 2013

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Section: Sediment Thickness Estimatesmentioning

confidence: 99%

Deep-sea pre-glacial to glacial sedimentation in the Weddell Sea and southern Scotia Sea from a cross-basin seismic transect

et al. 2013

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“…Roest et al (1992) interpret the anomaly S1 as true oceanic crust, and Klitgord and Schouten (1986) date the anomaly at 175 Ma. The location of S1 coincides with the seaward extent of a series of salt diapirs, marking the approximate landward edge of oceanic crust (Hinz et al, 1982).…”

Section: Geological Settingmentioning

confidence: 83%

“…Voluminous Quaternary volcanic activity on Tenerife was concentrated in the center of the island (Cañadas volcano, 1.9-0.2 Ma) and to a chain of basaltic eruption centers from the central volcano to the northeast (Cordillera Dorsal, peak activity ~0.8 Ma). (Verhoef et al, 1991) and the limits of the salt diapir zone between the eastern Canaries and Africa (Hinz et al, 1982). The square box is the study area (Fig.…”

Section: Geological Settingmentioning

confidence: 99%

Seismic structure of the volcanic apron north of Gran Canaria

Funck¹,

Lykke‐Andersen²

1998

Proceedings of the Ocean Drilling Program, 157 Scientific Results

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High-resolution reflection seismic profiles through the volcanic apron north of Gran Canaria collected during Meteor Cruise 24 were interpreted in the light of results from Leg 157 (Sites 953 and 954). The shape of the submarine island flanks of Gran Canaria and the two adjacent islands of Fuerteventura to the east and Tenerife to the west were reconstructed by interpretating seismic profiles that penetrated the sediments covering the deeper portions of the volcanic pedestals. The ~4750-m-deep flank of Fuerteventura is the oldest submarine island flank, influencing the subsequent shield-building of Gran Canaria to the east, whose 16-to 15-Ma shield is ponded against Fuerteventura, forming a topographic barrier between the islands. The associated reduction of the current cross section has caused strong bottom currents, indicated by erosional features and contourites. To the north, the flank of Gran Canaria extends 60 km seaward to a depth of ~4500 m. The shield of the Anaga massif on northeast Tenerife onlaps the flank of Gran Canaria to the east. Seismic correlation of the feathered edge of the Anaga shield (~50 km off Tenerife at a depth of 4000 m) to the bio-and magnetostratigraphy at Site 953 results in an age of ~6 Ma.The surrounding sedimentary basin is characterized by chaotic and discontinuous reflection patterns of the slope facies, turning into well-stratified basin facies ~30-40 km off the coast. The westward decrease of reflectivity in the northern apron is interpreted to be caused by the submarine ridge off Galdar at the western limit of the north coast of Gran Canaria, through which mass flows from Gran Canaria entering the sea in the north were diverted to the northeastern part of the apron. The volcanic activity correlates with the sedimentation rates in the apron. The lowest rate corresponds to the volcanic hiatus on Gran Canaria (9-5 Ma) with 3-4 cm/k.y., and the highest rate (up to 12 cm/k.y.) was found during the voluminous Miocene volcanism on the island. A number of large mass-wasting events could be identified, interbedded with the pelagic background sedimentation. The basaltic breccia drilled at Site 954 (lithologic Unit IV) is interpreted to represent the deposits associated with a slope failure at the northern flank of Gran Canaria at 12 Ma. The seismic mapping reveals >60 km 3 of debris advanced at least 70 km into the apron. The volume fits well with the dimensions of an amphitheater at the northern flank of Gran Canaria. The Quaternary volcanism on La Isleta at northeast Gran Canaria extends further seaward, where the seismic data show young lava flows. Other submarine volcanism occurred in the channel between Gran Canaria and Fuerteventura.

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“…WS-1 and WS-2). Prior to the deep drilling, stratigraphic studies in the region were conducted by Elverhøi and Maisey (1983), Hinz and Krause (1982), Hinz and Block (1984), Haugland et al (1985) and Hinz and Kristoffersen (1987). Correlations with ODP Site 693 were made by Miller et al (1990), Kuvaas and Kristoffersen (1991), Moons et al (1992), Michels et al (2002) and most extensively by Rogenhagen et al (2004) (Fig.…”

Section: The Regional Seismic and Geologic Databasementioning

confidence: 99%

Chapter 5 Cenozoic Climate History from Seismic Reflection and Drilling Studies on the Antarctic Continental Margin

Cooper

Brancolini

Escutia

et al. 2008

Antarctic Climate Evolution

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The Continental Margin of Morocco: Seismic Sequences, Structural Elements and Geological Development

Cited by 119 publications

References 27 publications

Deep-sea pre-glacial to glacial sedimentation in the Weddell Sea and southern Scotia Sea from a cross-basin seismic transect

Deep-sea pre-glacial to glacial sedimentation in the Weddell Sea and southern Scotia Sea from a cross-basin seismic transect

Seismic structure of the volcanic apron north of Gran Canaria

Chapter 5 Cenozoic Climate History from Seismic Reflection and Drilling Studies on the Antarctic Continental Margin

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