Tertiary Rift Basin, Kenya

Tertiary Rift Basin, Kenya

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6th - 8th  May, 2023


DAY 1:

Delegates will depart from Nairobi, making a first stop (Stop 1) at the Big Five View Point, to observe the step faulting of the eastern branch of the Great East African Rift Valley. From here delegates will also have a beautiful distant view of Mount Longonot on the rift floor to the northwest, and Mount Suswa to the south.

The next stop (Stop 2) will be at the Flyover View Point where delegates will have a closer view of Mount Longonot caldera that stands at 2500m above sea level. Delegates will then be driven all the way to Olkaria via Naivasha Town, through the numerous flower farms along Lake Naivasha shores to Olkaria I & II Geothermal Development Complexes (Stop 3).


Geothermal Development Complex
Geothermal Development Complex


Delegates will then be driven to Nakuru Town for lunch.  Thereafter, drive for about 100km north to Lake Bogoria SPA Resort where they will be staying during the field trip.  The Hotel is renowned for being the only one in Kenya with a naturally heated spa pool, associated with hot springs and its therapeutic values.


Lake Bogoria


DAY 2:

Delegates will drive west wards towards Kabarnet stopping at the Kapthurin formation (Stop 4) near Marigat town to observe the fluvial deposits.

Kapthurin formation


Delegates will then be driven to Kerio Valley along the scenic zig-zag road, through a thick tropical forested Kabarnet Hills via Karbarnet town before stopping at the edge of the Eastern Escarpment (Stop 5) of the Kerio Valley at Eastern View Point to observe the Elgeyo Escarpment with beautiful meandering Kabarnet-Iten road.

Kerio Valley along the scenic zig-zag road


Delegates will start descending along a meandering road and stop at the Cheploch Bridge (Stop 6) where a thick exposure of about 40m of Kabarnet trachyte can be observed in a deep canyon that has been dissected by the Kerio River.


Section of the Kabarnet Trachyte at the Kerio River Bridge
Section of the Kabarnet Trachyte at the Kerio River Bridge


At the Kolol View Point (Stop 7). Basement rocks of the K-feldspar-rich pegmatite rocks are exposed with numerous slicken slides.


Basement Rocks at Kolol View Point


Delegates will view the Miocene Tambach Formation (Stop 8) which is the potential reservoir and source rocks in the region. More than 20m thickness of the section is exposed consisting of inter bedded shales and sandstones. Delegates will be driven northwards along the valley to the top of the Elgeyo Escarpment at the Iten View Point.


Tambach Formation consisting of inter-bedded shales and sandstones


After lunch delegates will be driven to Nyaru for a view of the Elgeyo escapement and Kenya Fluorspar mines and back to Eldoret.

DAY 3:

Delegates depart for Kampala from Eldoret International Airport.

Fees: US$ 850 per person:

Costs include transport, accommodation, meals, and park fees. Delegates should also ensure that they come with the appropriate field gear e.g., field boots.


Contact Details:

Mr. Josky Kisali,
Senior Geologist
Ministry of Petroleum and Mining
Nyayo House, 22nd floor,
P. O. Box 51614 – 00100,
Nairobi, Kenya.
Email: This email address is being protected from spambots. You need JavaScript enabled to view it.
Telephone: +254 20 310 112
Cell phone: +254720 116 524

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