About This Item

This article has been peer-reviewed and accepted for publication in a future issue of the AAPG Bulletin. This abstract and associated PDF document are based on the authors' accepted "as is" manuscript.

Editorial Policy for Ahead of Print


Cite This Item

Display Citation

Share This Item

The AAPG/Datapages Combined Publications Database

AAPG Bulletin

Visit Publisher's Website  

Ahead of Print Abstract

AAPG Bulletin, Preliminary version published online Ahead of Print 15 September 2022.

Copyright © 2022. The American Association of Petroleum Geologists. All rights reserved.

DOI:10.1306/08072221203

Interplay of downbuilding and gliding in salt-bearing rifted margins: insights from analogue modelling and natural case studies

P. Granado, P. Santolaria, and J. A. Muñoz

Institut de Recerca Geomodels, Departament de Dinàmica de la Terra i de L’Oceà, Universitat de Barcelona (UB), C/Martí i Franquès s/n 08028 Barcelona, Spain

Ahead of Print Abstract

Our analogue modelling programme simulates a thermally subsiding rifted margin with a regional late syn-rift to early post-rift salt basin. End-member models included i) pure downbuilding in a confined salt basin and ii) dominant gliding on a tilted opened toe margin. The spectrum between these was completed by modelling different amounts of downbuilding vs. dominant gliding. Our results provide structural geometries and tectono-stratigraphic architectures for salt structures related to those end-member processes, as well as when these occur simultaneously. Downbuilding is represented by vertical aggradation of syn-kinematic strata, the erosional truncation of megaflaps, and syn-kinematic debris sourced from salt and pre-kinematic strata. Dominant gliding is represented by salt-detached extension and related diapirism, resulting on the progressive increase in line-lengths of younger stratigraphic units. The transition from downbuilding to dominant gliding is represented by diapir shoulders, and widening of sedimentary depocenters towards flanking salt structures undergoing collapse and salt-detached extension, as well as the truncation of stratigraphy by younger, laterally expanding depocenters. Our modelling results favours the interpretation of an early downbuilding component, followed by gliding for both the South Gabon rifted margin and the Cotiella basin involved in the South-Central Pyrenees fold-and-thrust belt.

Pay-Per-View Purchase Options

The article is available through a document delivery service. Explain these Purchase Options.

Protected Document: $10
Internal PDF Document: $14
Open PDF Document: $24

AAPG Member?

Please login with your Member username and password.

Members of AAPG receive access to the full AAPG Bulletin Archives as part of their membership. For more information, contact the AAPG Membership Department at [email protected].

Please cite this AAPG Bulletin Ahead of Print article as:

P. Granado, P. Santolaria, J. A. Muñoz: Interplay of downbuilding and gliding in salt-bearing rifted margins: insights from analogue modelling and natural case studies, (in press; preliminary version published online Ahead of Print 15 September 2022: AAPG Bulletin, DOI:10.1306/08072221203.

Close