Tectonic Setting of the Kenya Rift in the Nakuru Area, Based on Geophysical Prospecting

In this paper, we present results of tectonic and geophysical investigations in the Kenya Rift valley, in the Nakuru area. We compiled a detailed geological map of the area based on published earlier works, well data and satellite imagery. The map was then integrated with original fieldwork and cros...
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Autor*in:	Paolo Conti [verfasserIn] Marco Pistis [verfasserIn] Stefano Bernardinetti [verfasserIn] Alessio Barbagli [verfasserIn] Andrea Zirulia [verfasserIn] Lisa Serri [verfasserIn] Tommaso Colonna [verfasserIn] Enrico Guastaldi [verfasserIn] Giorgio Ghiglieri [verfasserIn]

Format:	E-Artikel
Sprache:	Englisch

Erschienen:	2021

Schlagwörter:	East African rift system Kenya tectonics geophysics

Übergeordnetes Werk:	In: Geosciences - MDPI AG, 2013, 11(2021), 2, p 80
Übergeordnetes Werk:	volume:11 ; year:2021 ; number:2, p 80

Links:	Link aufrufen Link aufrufen Link aufrufen Journal toc

DOI / URN:	10.3390/geosciences11020080

Katalog-ID:	DOAJ056817614

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author	Paolo Conti
spellingShingle	Paolo Conti misc QE1-996.5 misc East African rift system misc Kenya misc tectonics misc geophysics misc Geology Tectonic Setting of the Kenya Rift in the Nakuru Area, Based on Geophysical Prospecting
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topic_title	QE1-996.5 Tectonic Setting of the Kenya Rift in the Nakuru Area, Based on Geophysical Prospecting East African rift system Kenya tectonics geophysics
topic	misc QE1-996.5 misc East African rift system misc Kenya misc tectonics misc geophysics misc Geology
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title	Tectonic Setting of the Kenya Rift in the Nakuru Area, Based on Geophysical Prospecting
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title_full	Tectonic Setting of the Kenya Rift in the Nakuru Area, Based on Geophysical Prospecting
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title_sort	tectonic setting of the kenya rift in the nakuru area, based on geophysical prospecting
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title_auth	Tectonic Setting of the Kenya Rift in the Nakuru Area, Based on Geophysical Prospecting
abstract	In this paper, we present results of tectonic and geophysical investigations in the Kenya Rift valley, in the Nakuru area. We compiled a detailed geological map of the area based on published earlier works, well data and satellite imagery. The map was then integrated with original fieldwork and cross sections were constructed. In key areas, we then performed geophysical survey using Electrical Resistivity Tomography (ERT), Hybrid Source Audio MagnetoTelluric (HSAMT), and single station passive seismic measurements (HVSR). In the study area, a volcano-sedimentary succession of the Neogene-Quaternary age characterized by basalts, trachytes, pyroclastic rocks, and tephra with intercalated lacustrine and fluvial deposits crops out. Faulting linked with rift development is evident and occurs throughout the area crosscutting all rock units. We show a rotation of the extension in this portion of the Kenya rift with the NE–SW extension direction of a Neogene-Middle Pleistocene age, followed by the E–W extension direction of an Upper Pleistocene-Present age. Geophysical investigations allowed to outline main lithostratigraphic units and tectonic features at depth and were also useful to infer main cataclasites and fractured rock bodies, the primary paths for water flow in rocks. These investigations are integrated in a larger EU H2020 Programme aimed to produce a geological and hydrogeological model of the area to develop a sustainable water management system.
abstractGer	In this paper, we present results of tectonic and geophysical investigations in the Kenya Rift valley, in the Nakuru area. We compiled a detailed geological map of the area based on published earlier works, well data and satellite imagery. The map was then integrated with original fieldwork and cross sections were constructed. In key areas, we then performed geophysical survey using Electrical Resistivity Tomography (ERT), Hybrid Source Audio MagnetoTelluric (HSAMT), and single station passive seismic measurements (HVSR). In the study area, a volcano-sedimentary succession of the Neogene-Quaternary age characterized by basalts, trachytes, pyroclastic rocks, and tephra with intercalated lacustrine and fluvial deposits crops out. Faulting linked with rift development is evident and occurs throughout the area crosscutting all rock units. We show a rotation of the extension in this portion of the Kenya rift with the NE–SW extension direction of a Neogene-Middle Pleistocene age, followed by the E–W extension direction of an Upper Pleistocene-Present age. Geophysical investigations allowed to outline main lithostratigraphic units and tectonic features at depth and were also useful to infer main cataclasites and fractured rock bodies, the primary paths for water flow in rocks. These investigations are integrated in a larger EU H2020 Programme aimed to produce a geological and hydrogeological model of the area to develop a sustainable water management system.
abstract_unstemmed	In this paper, we present results of tectonic and geophysical investigations in the Kenya Rift valley, in the Nakuru area. We compiled a detailed geological map of the area based on published earlier works, well data and satellite imagery. The map was then integrated with original fieldwork and cross sections were constructed. In key areas, we then performed geophysical survey using Electrical Resistivity Tomography (ERT), Hybrid Source Audio MagnetoTelluric (HSAMT), and single station passive seismic measurements (HVSR). In the study area, a volcano-sedimentary succession of the Neogene-Quaternary age characterized by basalts, trachytes, pyroclastic rocks, and tephra with intercalated lacustrine and fluvial deposits crops out. Faulting linked with rift development is evident and occurs throughout the area crosscutting all rock units. We show a rotation of the extension in this portion of the Kenya rift with the NE–SW extension direction of a Neogene-Middle Pleistocene age, followed by the E–W extension direction of an Upper Pleistocene-Present age. Geophysical investigations allowed to outline main lithostratigraphic units and tectonic features at depth and were also useful to infer main cataclasites and fractured rock bodies, the primary paths for water flow in rocks. These investigations are integrated in a larger EU H2020 Programme aimed to produce a geological and hydrogeological model of the area to develop a sustainable water management system.
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title_short	Tectonic Setting of the Kenya Rift in the Nakuru Area, Based on Geophysical Prospecting
url	https://doi.org/10.3390/geosciences11020080 https://doaj.org/article/c20f179c4ddb4521b367f3a82af6f02e https://www.mdpi.com/2076-3263/11/2/80 https://doaj.org/toc/2076-3263
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up_date	2024-07-03T23:00:42.308Z
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Geophysical investigations allowed to outline main lithostratigraphic units and tectonic features at depth and were also useful to infer main cataclasites and fractured rock bodies, the primary paths for water flow in rocks. 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Tectonic Setting of the Kenya Rift in the Nakuru Area, Based on Geophysical Prospecting

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