Cardiff University | Prifysgol Caerdydd ORCA
Online Research @ Cardiff 
WelshClear Cookie - decide language by browser settings

The Agadir Slide offshore NW Africa: Morphology, emplacement dynamics and its potential contribution to the Moroccan Turbidite System

Li, W., Krastel, S., Alves, Tiago ORCID:, Urlaub, M., Mehringer, L., Schürere, A., Feldens, P., Gross, F., Stevenson, C. J. and Wynn, R. B. 2018. The Agadir Slide offshore NW Africa: Morphology, emplacement dynamics and its potential contribution to the Moroccan Turbidite System. Earth and Planetary Science Letters 498 , pp. 436-449. 10.1016/j.epsl.2018.07.005

[thumbnail of 0-Wei_Li_EPSL_Manucript_Revised_2c.pdf]
PDF - Accepted Post-Print Version
Download (4MB) | Preview


A newly identified large-scale submarine landslide on the NW African margin (Agadir Slide) is investigated in terms of its morphology, internal architecture, timing, and emplacement processes using high-resolution multibeam bathymetry data, 2D seismic profiles, and gravity cores. The Agadir Slide is located south of the Agadir Canyon at a water depth ranging from 500 m to 3,500 m, showing an estimated affected area of approximately 5,500 km2. The analysis of the Agadir Slide's complex morphology reveals the presence of two headwall areas and two slide fairways (the Western and Central slide fairways). Volume calculations indicate that ∼340 km3 of sediment were accumulated downslope along the slide fairways (∼270 km3) and inside the Agadir Canyon (∼70 km3). Stratigraphic correlations based on five gravity cores indicate an emplacement age of ka for the Agadir Slide. However, its emplacement dynamics suggest that the slide was developed in two distinct, successive stages. The presence of two weak layers (glide planes) is a major preconditioning factor for the occurrence of slope instability in the study area, and local seismicity related to fault activity and halokinesis likely triggered the Agadir Slide. Importantly, the Agadir Slide neither disintegrated into sediment blocks nor was transformed into turbidity currents. The emplacement timing of the Agadir Slide does not correlate with any turbidites cored downslope across the Moroccan Turbidite System.

Item Type: Article
Date Type: Publication
Status: Published
Schools: Earth and Environmental Sciences
Publisher: Elsevier
ISSN: 0012-821X
Date of First Compliant Deposit: 5 July 2018
Date of Acceptance: 3 July 2018
Last Modified: 06 Nov 2023 23:36

Citation Data

Cited 6 times in Scopus. View in Scopus. Powered By Scopus® Data

Actions (repository staff only)

Edit Item Edit Item


Downloads per month over past year

View more statistics