Denèle Y. auteur aut IRD Roques D. auteur aut IRD Ganne Jérôme auteur aut IRD Chardon Dominique auteur aut IRD Rousse Sonia auteur aut IRD Barbey P. auteur aut IRD text journalArticle eng text/pdf born digital access We investigate the development of a Neoproterozoic metamorphic core complex (MCC) in the Marbat area (southern Arabian Peninsula). The MCC is a gneiss dome emplaced in a releasing bend along a dextral strike-slip fault system. Dome emplacement-related extension was at a high angle to the long axis of the dome and 65 degrees from the strike-slip fault system. Shortening is recorded in the upper plate of the MCC in a direction normal to the extension direction. Extensional emplacement of the gneiss dome accommodated lower crust exhumation and contributed to the formation of a ductile strike-slip releasing bend from an initial fault step. The Marbat example allows defining transversal stretching-dominated strike-slip MCCs, which would represent the early development stages of longitudinal stretching-dominated strike-slip MCCs. Conversely, longitudinal stretching-dominated strike-slip MCCs produced at low finite extension would result from strike-slip-dominated transtension. This study bears important implications for lower crust exhumation under pulla-part basin systems in obliquely convergent or divergent settings. specialized OMAN ARABIQUE PENINSULE 064 066 45 10 903-906 2017 0091-7613 https://www.documentation.ird.fr/hor/fdi:010071233 10.1130/g39065.1 0091-7613 [F B010071233] https://www.documentation.ird.fr/hor/fdi:010071233 https://www.documentation.ird.fr/intranet/publi/2017/10/010071233.pdf Accès réservé (Intranet de l'IRD) IRD - Base Horizon / Pleins textes 2017-10-31 2023-07-11 fdi:010071233 fre