Present-day sedimentation on the carbonate platform of the Dahlak Islands, Eritrea

Carbone, Federico; Matteucci, Ruggero; Angelucci, Alessandra

doi:10.1007/978-94-011-4930-3_28

Cited by 12 publications

(9 citation statements)

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“…Offshore from Eritrea in the Dahlak archipelago (Fig. 1), the Pleistocene Dahlak Reef Limestone is highly disrupted by active normal faults (Carbone et al, 1998). Most of this deformation is attributed to the linking of the active Danakil rift with the southern Red Sea spreading center.…”

Section: Quaternary Geology and Neotectonicsmentioning

confidence: 98%

The Red Sea and Gulf of Aden Basins

Bosworth

Huchon

McClay

2005

Journal of African Earth Sciences

785

346

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Section: Quaternary Geology and Neotectonicsmentioning

confidence: 98%

The Red Sea and Gulf of Aden Basins

Bosworth

Huchon

McClay

2005

Journal of African Earth Sciences

785

346

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“…Figure summarizes a catalogue of 190 uplift rates compiled from published 14 C and 239 Th/ 243 U dates of emergent marine terraces [ McClure and Vita‐Finzi , ; Behairy , ; Purser and Höltz , ; Dullo , ; Hoang and Taviani , ; Gvirtzman et al ., ; El Moursi et al ., ; Plaziat et al ., ; Bosworth and Taviani , ; Hoang et al ., ; El Asmar , ; Carbone et al ., ; Dullo and Montaggioni , ; Walter et al ., ; Vita‐Finzi , ; Hoorn and Cremaschi , ; Pirazzoli et al ., ; Plaziat et al ., ; Buffler et al ., ; Lambeck et al ., ; Leroy et al ., ; Wood et al ., ; Dawood et al ., ]. This compilation includes terraces that formed during marine isotope stage 5e, when sea level may have been 4–6 m higher than its present‐day value [ Chappell and Shackleton , ; Zhu et al ., ; Lambeck and Chappell , ; Shackleton et al ., ].…”

Section: Regional Testsmentioning

confidence: 99%

“…Collectively, these observations suggest that the coastal plain is being uplifted at rates of 0.02-0.08 mm a 21 . -Finzi, 1982;Behairy, 1983;Purser and H€ oltz, 1988;Dullo, 1990;Hoang and Taviani, 1991;Gvirtzman et al, 1992;El Moursi et al, 1994;Plaziat et al, 1995;Bosworth and Taviani, 1996;Hoang et al, 1996;El Asmar, 1997;Carbone et al, 1998;Dullo and Montaggioni, 1998;Walter et al, 2000;Vita-Finzi, 2001;Hoorn and Cremaschi, 2004;Pirazzoli et al, 2004;Plaziat et al, 2008;Buffler et al, 2010;Lambeck et al, 2011;Leroy et al, 2012;Wood et al, 2012;Dawood et al, 2013]. This compilation includes terraces that formed during marine isotope stage 5e, when sea level may have been 4-6 m higher than its present-day value [Chappell and Shackleton, 1986;Zhu et al, 1993;Lambeck and Chappell, 2001;Shackleton et al, 2003].…”

Section: Quaternary Uplift Ratesmentioning

confidence: 99%

Cenozoic epeirogeny of the Arabian Peninsula from drainage modeling

Wilson

Hoggard

White

2014

Geochem. Geophys. Geosyst.

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It is generally accepted that the Arabian Peninsula has been uplifted by subcrustal processes.Positive residual depth anomalies from oceanic crust in the Red Sea and in the Gulf of Aden suggest that a region surrounding this peninsula is dynamically supported. Admittance calculations, surface wave tomography studies, and receiver function analyses all imply that regional topography is generated and maintained by some combination of mantle convective circulation and lithospheric thickness changes. Despite these significant advances, the spatial and temporal uplift rate history of the Arabian Peninsula is not well known. Here we show that a regional uplift rate history can be obtained by jointly inverting 225 longitudinal river profiles that drain this peninsula. Our strategy assumes that shapes of individual river profiles are controlled by uplift rate history and moderated by erosional processes. We used local measurements of incision rate to calibrate the relevant erosional parameters. In our inverse algorithm, uplift rate is permitted to vary smoothly as a function of space and time but upstream drainage area remains invariant. We also assume that knickzone migration is not lithologically controlled. Implications of these important assumptions have been investigated. Our results suggest that the Arabian Peninsula underwent two phases of asymmetric uplift during the last 20-30 Ma at rates of 0.05-0.1 mm a 21 . The southwestern flank of the peninsula has been uplifted by 1.5-2.5 km. Regional stratigraphic constraints, the age and composition of volcanism, paleosol formation, incised peneplains, emergent marine terraces, and thermochronometric measurements corroborate our calculated patterns of uplift. Progressive development of three domal swells along the western margin of the peninsula is consistent with localized upwelling of hot asthenospheric mantle.

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“…However, the present-day plate boundary configuration and the relative plate motions are still not well resolved for the entire area (Schettino et al 2016). The main difficulties include (1) that the plate boundary deformation is broadly distributed over hundreds of kilometers rather than being focused at sharp boundaries (CNR & CNRS 1975;, (2) that parts of the Nubia-Arabia plate boundary in the Red Sea are buried under thick salt deposits (Frazier 1970;Carbone et al 1998), (3) that small transform fault offsets (less than 5 km) along with incipient structures characterize the Red Sea spreading center and the Nubia-Arabia-Somalia plate boundaries, respectively (Chu & Gordon 1998;Ebinger et al 2010), (4) lack of continuous geodetic observations (particularly in Yemen), and (5) that many tectonic structures within Afar are covered by young (∼1-4 Ma) volcanic deposits (Barberi & Varet 1977;Acton et al 1991).…”

Section: Introductionmentioning

confidence: 99%

Kinematics and deformation of the southern Red Sea region from GPS observations

Viltres

Jónsson

Ruch

et al. 2020

Geophysical Journal International

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The present-day tectonics of the southern Red Sea region is complicated by the presence of the overlapping Afar and southern Red Sea rifts as well as the uncertain kinematics and extent of the Danakil block in between. Here we combine up to 16 years of GPS observations and show that the coherent rotation of the Danakil block is well described by a Danakil-Nubia Euler pole at 16.36°N, 39.96°E with a rotation rate of 2.83°/My. The kinematic block modeling also indicates that the Danakil block is significantly smaller than previously suggested, extending only to Hanish-Zukur Islands (∼13.8°N) with the area to the south of the islands being a part of the Arabian plate. In addition, the GPS velocity field reveals a wide inter-rifting deformation zone across the northern Danakil-Afar rift with ∼5.6 mm/yr of east-west opening across Gulf of Zula in Eritrea. Together the results redefine some of the plate boundaries in the region and show how the extension in the southern Red Sea gradually moves over to the Danakil-Afar rift.

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Present-day sedimentation on the carbonate platform of the Dahlak Islands, Eritrea

Cited by 12 publications

References 0 publications

The Red Sea and Gulf of Aden Basins

The Red Sea and Gulf of Aden Basins

Cenozoic epeirogeny of the Arabian Peninsula from drainage modeling

Kinematics and deformation of the southern Red Sea region from GPS observations

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