Selous Basin, Southern Tanzania

Selous Basin, Southern Tanzania

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28th February - 3rd March, 2025

Itinerary

The EAPCE’25 Pre-Conference field excursion is a 4-day trip from 28th February to 3rd March 2025. The trip will provide an opportunity to understand the structural and stratigraphic framework of the northern part of the Selous failed rift basin, with some insights into Kilosa Kilombero and Ruvu basin along the way.

Delegates will witness incredible geological features that characterize the hydrocarbon potential of the Selous Basin, including the potential source, reservoirs and seal rocks of the Karoo Formation. At the same time, they will also see the attractiveness of the Nyerere National Park (formerly Selous Game Reserve), including its diverse wildlife, grasslands and tree species located in the basin and visit the Mwalimu Nyerere Hydroelectric Power project.

Along the way, delegates will make a few stops to appreciate the well-exposed sections of Cretaceous and Jurassic sediments that mark the main targets for hydrocarbon generation and accumulation in the Ruvu Basin and will also visit a viewpoint to enjoy the magnificent scene of the Kilosa Kilombero basin that constitutes potential elements for the oil discovery in the basin.

A map showing part of the Nyerere National Park area and routes to be followed (Cartography by Mike Shand)

 

DAY 1: 28TH FEBRUARY 2025 - DAR ES SALAAM TO KILOSA SUB BASIN VIA MOROGORO


The trip from Dar es Salaam to Kilosa via Morogoro Town, will take you through Neogene sediments in Dar es Salaam and magnificent exposure of Jurassic sediments at Msolwa quarry and a good look at the Jurassic Sediments-Basement rocks contact at Msolwa bridge area.

Msolwa quarry with good exposer of sand limestone overlain by Shale
Msolwa quarry with good exposer of sand limestone overlain by Shale

 

Thereafter, delegates will have the opportunity to admire the gorgeous scenery of the Uluguru mountain chains of the Mozambique Orogenic Belt when driving to Morogoro town.

Further, at Kilengezi village the delegates will observe good exposure of Permian to Triassic tillites which indicates the occurrence of glacial period during that time.

Along the road to Kilosa town, Delegates will witness the beautiful lowland swampy, flatland and wetland of the Kilosa sub-basin which is part of the Kilosa Kilombero Basin. At Kilosa Town delegates will be able to view the beautiful scenery of the Sagara Mountains and briefly learn the geological features that characterize the basin and its potential for Oil discovery. The Sagara Mountains form the western boundary of the Kilosa Rift, the Sagara mountains formed by large-scale blocking faulting and tilting of Kilosa rifting system. The flating alluvial marshland of the Kilosa Valley are the down-thrown block of the rifting.

Later, the delegates will drive back to Morogoro town for a night stay at the foot of the Uluguru Mountain in Nashera Hotel.

 

DAY 2: 1st MARCH, 2025 - MOROGORO TO SELOUS BASIN VIA KISAKI TOWN

Along the way Delegates will make a stop at Changa village, and delegates will observe good-quality white marble at an abandoned marble mine.

Delegates will stop at Chamanyani Hill (Msonge Village) to view the First glimpse of the Selous basin as approaching from the North. While driving down to the basin the delegates will view the Basement to Karoo sediment contact on the road cut. The Selous Basin which is underplayed by Karoo sediments is known by the presence of potential elements for hydrocarbon exploration.

The outcrops seen: Metamorphosed dolomitic marbles observed in abandoned mine at Changa Village. The marbles are extensively distributed and well exposed in this area.

 

Further, at Kilengezi village the delegates will observe good exposure of Permian to Triassic tillites which indicates the occurrence of a glacial period during that time and marks the syrift sediments of the basin.

 

Tillites exposed at Kilengezi village consisting of unsorted large boulders of basement (marble, gneiss and quartzite), sub rounded to rounded pebbles and cobbles deposited by melting glacial and then transported and deposited by river formed after melting of ice.

 

Then delegates will drive to Sable Mountain Lodge in the Kisaki area for the night stay.

 

DAY 3: 2ND MARCH, 2025: SABLE MOUNTAIN LODGE TO MARAMBWE GATE AND TAGALALA HOTSPRING

The delegates will drive to Matambwe Gate to enter Nyerere National Park. While touring the game reserve the delegates will have an opportunity to observe key petroleum elements of the basin including Karoo shales and intercalation of siltstone and coarse-grained sandstone at Fuga Hill and Kidahi road cut respectively.

Karoo outcrops, Olive greenish grey shale exposed at Fuga hill and Kidahi area
Karoo outcrops, Olive greenish grey shale exposed at Fuga hill and Kidahi area

 

Karoo outcrops, Olive greenish grey shale exposed at Fuga hill and Kidahi area
Karoo outcrops, Olive greenish grey shale exposed at Fuga hill and Kidahi area

 

Thereafter, delegates will tour Tagalala Lake to observe magnificent views of the lake with diversity. Then tour the Tagalala hot spring to observe hot water pool and bitumen embedded within the sandstone breccias as a good indication for the existence of a petroleum system.

 

A photography showing (A) Lake Tagalala (B) A pool of Tagalala hotspring (C) The sandstone breccias embedded with bitumen (D) A carbonate precipitate on the sandstone outcrop.

Then delegates will have lunch at Tagalala Hot spring for about 1 hour.

 
Behobeho area: While driving back to the Sable Mountain Lodge delegates will spend a few minutes to view and have a short History of a British Hunter Selous at his grave in Behobeho area. Thereafter observe the continental muddy limestone with limestone concretion bodies in Behobeho area.

 

The grave of Selous, a British hunter, explorer, naturalist and conservationist, whose name was given to a hunting reserve –Selous Game reserve (Now Nyerere National Park).
Muddy limestone with limestone concretion body at Behobeho.

The tour around Behobeho area to Sable Mountain Lodge will further provide an opportunity to recognize the natural potential of the Nyerere National Park by observing varieties of wildlife.

Giraffes at Nyerere National Park (the Selous)
Giraffes at Nyerere National Park (the Selous)


        
DAY 4: 3RD MARCH, 2025: TOUR TO MWALIMU NYERERE HYDROELECTRIC POWER AND DRIVE BACK TO DAR ES SALAAM 

 

Delegates will have a drive from Sable Mountain Lodge to Julius Nyerere Hydropower Plant and spend a memorable 3 hours visiting the project (more details will be shared).

 

Mwalimu Nyerere Hydroelectrical Power Project

 

Later that day, Delegates will drive back to Dar es Salaam, have a stop at Lake Siwandu for a 30-minute Lunch Break. Delegates will be able to view different wildlife along the way and at the lake.

 

Lake Siwandu; one among (8) eight ox-bow lakes of Rufiji river which are found in the game reserves


 
Delegates will drive back to Dar es Salaam via Mtemele gate and stay for the night for flight preparation the next day.


Fees:

US$ 1,134 per person non – residents

US$ 980 per person for East African residents

Includes meals, transport, accommodation and park entry fees.

Final Fees to be confirmed based on the applicable fees during the period of May 2023.

NOTE: There will be a price reduction based on the number of delegates registered

Contact:

Ms. Neema Maganza,
Petroleum Geologist Tanzania Petroleum
Development Corporation (TPDC),
P. O. Box 2774, Dar es Salaam.
Email: This email address is being protected from spambots. You need JavaScript enabled to view it.
Cell phone: +255 754 896 161


 

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11th East African Petroleum Conference & Exhibition 2025 (EAPCE'25).
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