Abstract

This work explores the uplift history of the best exposed marine terraces in the northeastern Arabian Peninsula (eastern AlHajar Mountains). A multidisciplinary approach was employed, including a topographic survey, ¹⁴C dating, thin sectionstudies, and scanning electron microscopy analyses. Six distinctive marine terraces with widths ranging from tenth ofmeters to kilometers and elevations from 5 to ~400 m were studied. These terraces record an along-strike heterogeneousuplift history, while they show temporally variable uplift rates ranging between 0.9 to 6.7 mm/yr, which correlates wellwith other published uplift rates of marine terraces of the eastern Arabian Peninsula. We attribute the variable uplift alongstrike of the terraces, to a combination of uplift mechanisms: (1) during early to mid-Miocene along deep-rooted reversefaults that bound large crustal-scale blocks, (2) Pliocene or post-Pliocene uplift on the outer wall of the forebulge of thelower Arabian Plate as it bends to enter the Zagros-Makran subduction zone, and (3) a possible slowdown of subductionfor the past ~40 ka.

文章信息：Moraetis, D., Mattern, F., Shcarf, A., Frijia, G., Kusky, T., Yaun, Y., Hussain, I., 2018, Neogene to Quaternary uplift history along the passive margin of the northeastern Arabian Peninsula, East Hajar Mountain Oman, Quaternary Research, doi:10.1017/qua.2018.51