Stepped Holocene sea-level rise and its influence on sedimentation in a large marine embayment: Maputo Bay, Mozambique

Lecea, Ander M. de; Green, Andrew N.; Strachan, Kate L.; Cooper, J. Andrew G.; Wiles, Errol

doi:10.1016/j.ecss.2017.05.015

Cited by 23 publications

(11 citation statements)

References 55 publications

Supporting

Mentioning

Contrasting

Unclassified

Order By: Relevance

“…Of course, the rise in sea level in the Holocene period conditioned the origin and development of 15% (Glaeser, 1978) of the Barrier islands found around the world. During this period, the sea level changes of the Southern Hemisphere, particularly, from the SE coast of Africa match some of that presented by Ramsay (1995), Armitage et al (2006), De Lecea et al (2017), Cooper et al (2018) and Compton (2011), and some radiocarbon data ages obtained in the present study (see Table 2). Through this research, clear discussion about environmental changes and the impacts on the geological evolution in the SE coastal region is still open.…”

Section: Discussionsupporting

confidence: 92%

“…The dune‐ridge heights resulted from the persistent action of southeast and southern winds, the mesotidal regime, wave action and to relative sea‐level changes that occurred during the Holocene (Armitage et al, 2006; De Lecea et al, 2017; Gomes et al, 2017; Miguel et al, 2019; Ramsay, 1995). Rebelo et al (2012) described different lithologies and mineralogical composition of sedimentary deposits in Bilene barrier system (Figure 2).…”

Section: Study Areamentioning

confidence: 99%

“…Dillenburg et al (2009) suggest that the development of these types of coastal sedimentation environments is associated with low beach slopes on coasts dominated by waves or in coasts with a low slope continental shelf. Along the southern segment of the coast of Mozambique, and in Lake Saint Lucia in South Africa (Armitage et al, 2006; De Lecea et al, 2017; Gomes et al, 2017; Miguel et al, 2019) highlighted the existence of prograding and retrograding systems in response to climate and oceanographic changes, and fluctuations in relative sea‐level in Southeast Africa.…”

Section: Introductionmentioning

confidence: 99%

See 2 more Smart Citations

Late Holocene evolution of a coastal barrier system at Bilene, Mozambique

Miguel,

Costa

2023

Earth Surf Processes Landf

View full text Add to dashboard Cite

This research attempts to provide a contribution to the study on coastal barrier‐lagoons in the SE Africa generated by sea‐level fluctuations, and climate change during the Late Holocene. To achieve this goal, the grain‐size analysis and morphoscopic description helped to detect cyclic facie sequences with sediments sized over 200 μm mixed with silt, bioclasts and organic matter. Moreover, the magnetic susceptibility and X‐ray diffraction (XRD) analyses displayed over 90% of quartz and isolated mica, feldspar and heavy minerals. Additionally, the X‐ray fluorescence (XRF) results display the interplay between terrigenous (>Ti and Al) and marine influence (S, Cl and ~Ca) over the last ~3,500 cal. yrs. BP. The geochemical tracer fluctuations detected suggest five distinct deposits including beach, washover, lacustrine system, aeolian deflation that rest on top of the Pleistocene palaeodunes, which are tentatively associated with the sea‐level variations, extreme marine events or with local floods. Although the multiproxy data record refers to a study in Bilene‐Mozambique, it is interesting to understand the mechanisms and variables related to the evolutionary dynamics of coastal barrier lagoons generated by sea‐level fluctuations and climate change, especially in the SE Africa.

show abstract

Section: Discussionsupporting

confidence: 92%

Section: Study Areamentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

Late Holocene evolution of a coastal barrier system at Bilene, Mozambique

Miguel,

Costa

2023

Earth Surf Processes Landf

View full text Add to dashboard Cite

show abstract

“…9 ). With the Limpopo River reaching the coast just north of Maputo Bay, it is most likely that the linkage with the Phongolo/Maputo River occurred during previous glacial maximums when sea-levels at Maputo Bay were 130 m below present ( De Lecea et al, 2017 ). This historic linkage is also further supported by the distribution of C. lisikili 's fish host ( S. zambezensis ) in the Phongolo.…”

Section: Discussionmentioning

confidence: 99%

Description of life stages, molecular characterisation as well as a new host and locality record of Chonopeltis lisikili Van As and Van As (1996) from Phongolo River, South Africa

Smit

Hadfield

2021

International Journal for Parasitology: Parasites and Wildlife

View full text Add to dashboard Cite

Chonopeltis lisikili Van As and Van As, 1996 was original described from the Eastern Caprivi (Namibia) and the Okavango System (Botswana), collected from five Synodontis Cuvier, 1816 (Mochokidae) species. This fish genus is endemic to Africa, with 130 valid species, making it one of the most species-rich and widely distributed mochokid catfish family. During parasitological surveys conducted in the Phongolo River (South Africa), a Chonopeltis Thiele, 1900 species was collected from Synodontis zambezensis Peters, 1852 . In total, 21 adult females, four adult males, as well as representatives of the larval developmental stages were found. After morphological comparison, this branchiuran was identified as C. lisikili. This paper provides additional information on body measurements and morphological information of all the life stages of the Phongolo material. Information on Chonopeltis material collected from the Okavango River, Botswana, not yet published is also included as well as the first molecular characterisation of a Chonopeltis species using COI and 18 S rRNA partial sequencing. The endemicity of the host and fish lice necessitates a discussion on the host origin and distribution in more than one river system, particularly referring to host specificity for Chonopeltis species.

show abstract

“…According to the sea-level curve of Cooper et al (2018), this would correspond to the end phase of the so-called sea-level slowstand of Pretorius et al (2016) at about 10.6 ka BP, when sea level rose by ~ 1 m/200 years (cf. also de Lecea et al 2017;Cooper et al 2018). Up to that depth only, a small part of the coastal aeolianites occupying the Wilderness embayment was exposed to wave erosion (Martin and Flemming 1986).…”

Section: Robberg Spit-barmentioning

confidence: 99%

Sedimentology of a coastal shelf sector characterised by multiple bedload boundaries: Plettenberg Bay, inner Agulhas Bank, South Africa

Flemming

Martin²

2021

Geo-Mar Lett

View full text Add to dashboard Cite

The study deals with a large sand body (spit-bar) attached to the eastern tip of the Robberg Peninsula, Plettenberg Bay, South Africa. To date, the bar has prograded about 8 km beyond the tip of the peninsula. The bar top is predominantly composed of medium sand, the upper slope of fine sand, and the lower slope of fine muddy sand. Stratigraphically, the sedimentology thus documents an upward coarsening, calcareous quartz-arenitic depositional sequence. The spit-bar as a whole forms the eastern end of a sediment compartment that is clearly distinguishable from neighbouring compartments on the basis of its geomorphology, the textural characteristics of the sediment, and the distribution of sediment thicknesses. Aeolian overpass across the peninsula appears to have formed a fan-like sand deposit in its rear, which is perched upon the upper shoreface of the bay as suggested by the bathymetry to the north of the peninsula. It forms an integral part of the sediment body defining the spit-bar. The estimated volume of sand stored in the spit-bar amounts to 5.815 km3, of which 0.22 km3 is contributed by the aeolian overpass sand. The sediment sources of the spit-bar are located up to 100 km to the west, where a number of small rivers supply limited amounts of sediment to the sea and numerous coastal aeolianite ridges in the Wilderness embayment have been subject to erosion after becoming drowned in the course of the postglacial sea-level rise since about 12 ky BP. By contrast, the sediment volume in the adjacent compartment B to the north (Plettenberg Bay), which has been supplied by local rivers, amounts to only 0.127 km3. In a geological context, large sand bodies such as the Robberg spit-bar are excellent exploration models for hydrocarbons (oil and gas).

show abstract

Stepped Holocene sea-level rise and its influence on sedimentation in a large marine embayment: Maputo Bay, Mozambique

Cited by 23 publications

References 55 publications

Late Holocene evolution of a coastal barrier system at Bilene, Mozambique

Late Holocene evolution of a coastal barrier system at Bilene, Mozambique

Description of life stages, molecular characterisation as well as a new host and locality record of Chonopeltis lisikili Van As and Van As (1996) from Phongolo River, South Africa

Sedimentology of a coastal shelf sector characterised by multiple bedload boundaries: Plettenberg Bay, inner Agulhas Bank, South Africa

Contact Info

Product

Resources

About