Studies of Shores and Shore Displacement on the Southern Coast of Kenya—Especially in Kilifi District

Åse, Lars-Erik

doi:10.1080/04353676.1981.11880045

Cited by 6 publications

(3 citation statements)

References 6 publications

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“…On the Kenyan coast, a mid-Holocene sea level highstand of c.4-6 m above present levels has also been reported [ 41 ]. Beach or dune ridge formation on the coast in the Kilifi District continued following post-glacial sea level rise, with radiocarbon ages obtained from shell samples from one ridge south of Kilifi falling within the last 1000 years [ 45 ], corresponding with the most recent drop in sea levels. PYS would have maintained its proximity to the coast of <20 km throughout the known period of occupation of the site, even with significant changes in sea level, due to the coastal shelf dropping c.125 m within 4–5 km of the modern coastline ( Fig 2 ) [ 38 , 46 ].…”

Section: Site Location and Descriptionmentioning

confidence: 99%

“…The expansive Kilifi Creek Lagoon (also known as Bandari ya Wari) is important to consider in this context. The interior of Kilifi Lagoon, with an estimated area of c. 6 km 2 , is considerably wider than the narrow channel mouth of the creek (at 4 km from the open lagoon), where the continuity of the coral reef is presently broken due to outflow of freshwater [ 42 , 45 , 47 ]. The western side of the lagoon is extensively covered with mangroves over an area of c. 3.6 km 2 , including two main tidal creeks, with significant mangrove diversity recorded across this area [ 47 ].…”

Section: Site Location and Descriptionmentioning

confidence: 99%

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67,000 years of coastal engagement at Panga ya Saidi, eastern Africa

et al. 2021

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The antiquity and nature of coastal resource procurement is central to understanding human evolution and adaptations to complex environments. It has become increasingly apparent in global archaeological studies that the timing, characteristics, and trajectories of coastal resource use are highly variable. Within Africa, discussions of these issues have largely been based on the archaeological record from the south and northeast of the continent, with little evidence from eastern coastal areas leaving significant spatial and temporal gaps in our knowledge. Here, we present data from Panga ya Saidi, a limestone cave complex located 15 km from the modern Kenyan coast, which represents the first long-term sequence of coastal engagement from eastern Africa. Rather than attempting to distinguish between coastal resource use and coastal adaptations, we focus on coastal engagement as a means of characterising human relationships with marine environments and resources from this inland location. We use aquatic mollusc data spanning the past 67,000 years to document shifts in the acquisition, transportation, and discard of these materials, to better understand long-term trends in coastal engagement. Our results show pulses of coastal engagement beginning with low-intensity symbolism, and culminating in the consistent low-level transport of marine and freshwater food resources, emphasising a diverse relationship through time. Panga ya Saidi has the oldest stratified evidence of marine engagement in eastern Africa, and is the only site in Africa which documents coastal resources from the Late Pleistocene through the Holocene, highlighting the potential archaeological importance of peri-coastal sites to debates about marine resource relationships.

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Section: Site Location and Descriptionmentioning

confidence: 99%

Section: Site Location and Descriptionmentioning

confidence: 99%

67,000 years of coastal engagement at Panga ya Saidi, eastern Africa

et al. 2021

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“…Vipingo area is in the Coastal Plain, which lies along the Indian Ocean Sea shore and reaches 3-8 km inland, with elevations mostly less than 33 m. It consists mainly of Pleistocene deposits, of which the Pleistocene coral reef is the most relevant for the Vipingo quarry area. The Pleistocene coral reef is approximately 1-4 km wide, mostly around 20 m but up to 100 m thick, decreasing in thickness from the south towards the north [19], and extends along the whole length of the Kenyan coast from Tanzania to Malindi area [20]. Submarine thickness remains largely unknown.…”

Section: B Geological Backgroundmentioning

confidence: 99%

Karst-Induced Geoharzards in Kenya’s Coastal Region: A Case Study of Vipingo Coral Limestone Quarry

Onyango

Moses

2021

EJGEO

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As the human population grows, the demand for space to settle and infrastructure development puts a strain on land resources hence people move to occupy areas of difficult terrain such as mountainous regions and karst environments. The trends in anthropogenic activities mean that there will be increased human interaction with the perilous terrain and consequently geohazards associated with them. Studies on geohazards in Kenya have focused mostly on landslides in mountainous regions but not much has been reported on geohazards that are common in areas of carbonate rocks such as coral limestone. Vipingo coral limestone quarry, a coastal quarry, is taken as a case study as a number of hazardous situations have been encountered during mining. This paper outlines the karst features, their formation processes in the coralline limestone rock mass, and the resultant geohazards. Field visits made to the quarry complemented with previous exploration reports enabled the collection of field data on rock mass characteristics, karst features, and potential hazardous sites were mapped out. Karstification is evident in traces of pores and fissures filled with soil in the upper layers of the rock. Cavities, voids, and caves occur randomly in the rock mass and are the genesis of incidents such as bench collapse, sagging of overlying rock slaps leading to sinkholes. The rock mass is weak and prone to slope failures. Suggestions have been fronted for geohazard mitigation and further research work for the scientific community. Thus, this work constitutes an important knowledge base for infrastructure development and any other quarries around the area, and for those who are settled around this karst environment in order to preempt geo-accidents.

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Quaternary Evolution

Olago

2013

Developments in Earth Surface Processes

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Studies of Shores and Shore Displacement on the Southern Coast of Kenya—Especially in Kilifi District

Cited by 6 publications

References 6 publications

67,000 years of coastal engagement at Panga ya Saidi, eastern Africa

67,000 years of coastal engagement at Panga ya Saidi, eastern Africa

Karst-Induced Geoharzards in Kenya’s Coastal Region: A Case Study of Vipingo Coral Limestone Quarry

Quaternary Evolution

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