Countries
Institutions
Fields
Rankings
Compare

Search institutions, scholars, countries and publications

Sankore

Named after the University of Sankore in Timbuktu — one of the world’s oldest centres of learning. Every figure here is computed from work-level records in our own graph, never copied from a source’s summary count.

Built from

OpenAlex — works, authorships, subject classification
ROR — institutional identity
ORCID — researcher identity
Crossref — publisher confirmation

Browse

Countries
Institutions
Fields
Rankings
What we cover

Coverage is partial and says so. A country appears with its research output only once its works have been swept; until then the portal shows whatever the graph happens to hold for it and labels it as exactly that.

Palaeoenvironmental reconstruction of the coal-forming conditions during Oligocene in Niger Delta, Southern Nigeria: Implications for organic matter preservation and hydrocarbons potential

2025International Journal of Coal GeologyJournalOpen access

10.1016/j.coal.2025.104807 Full text1 citations

Authors

8 authors across 3 institutions in 3 countries.

Jude Etunimonuwa OgalaFirst author
- Delta State University (NG)
as printed: J.E. Ogala
Konstantinos Perleros
as printed: K. Perleros
E. Kyriazaki
M. Angelopoulos
Omabehere Innocent Ejeh
- Delta State University (NG)
as printed: O.I. Ejeh
M. Wojtaszek-Kalaitzidi
Stavros KalaitzidisCorresponding
as printed: S. Kalaitzidis
Kimon ChristanisSenior author
as printed: K. Christanis

Fields

Assignment is probabilistic — a work belongs to several fields in proportions.

Hydrocarbon exploration and reservoir analysislevel 3 · 1.00
Coal and Its By-productslevel 3 · 1.00
Geochemistry and Elemental Analysislevel 3 · 1.00

Sources

Several sources describing one work is the point — it means the record rests on more than one authority.

openalexseen September 9, 2026
2025 · International Journal of Coal Geology · 1 citations
https://openalex.org/W4410255832

Palaeoenvironmental reconstruction of the coal-forming conditions during Oligocene in Niger Delta, Southern Nigeria: Implications for organic matter preservation and hydrocarbons potential · Sankore