1887

Abstract

Summary

The Maghrebian margin remains one of the key questions still open to debate on its geodynamic evolution. The geology of onshore-offshore central Algerian margin particularly records a history of accretion and/or subduction modified by the presently active transform motion between the Eurasian and African Plates. Establishing the identity and boundaries of basement blocks or terrains led to better understanding its geodynamic evolution and accretionary history. To this aim, gravity anomaly data have been used in order to determine the structure and evolution of the central Algerian margin. The gravity data set for this margin zone were compiled from available land and marine surveys. Initially, the data were reduced to complete Bouguer anomaly using an appropriate density to those carried out onshore and offshore respectively. As main results, we have reviewed in details the links between all our compiled gravity data and deep crustal structure within the complex geodynamic framework in this area. We presented a new global Bouguer anomaly map in conjunction with major structural features of this zone. It should be noted that in comparison to other margins, the gravity anomaly at this part of Algerian margin shows a number of distinctive features.

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/content/papers/10.3997/2214-4609.201902498
2019-09-08
2024-04-18
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