The oil sands are majorly deposited in the Western Nigeria spans a distance of about 120km, the tar deposits occurring as heavy oil and manifest as seepages and at near surface or at the surface as impregnated sediments at road cuts, cliff faces and river banks and at break of slopes. Samples were collected at Agbabu, Ilubinrin and Loda where open mining is at progress. The asphaltene content was determined and the concentration of a suite of metals mainly the biophiles were determined. The objective of this study is to determine the genetic relationship of these exposed tar sand and seeps based on the fact that Asphaltene have been redefined as micro kerogens bearing in preserved state the features of the original input organic matter. The result indicates that sample obtained from the drilled wellbore (A1) showed an outstanding difference from others. The seep samples (A2, A3, A4, and A6) irrespective of locations showed close relations as represented by the ternary plots. Samples with significant sand content (5.7) also showed similarity. It is suggested that since samples (A2, A3, A4, and A6) were seeps, they could have migrated via structural permeability e.g. faults and fractures while samples 5, 7 could have migrated via pore network in the trapless reservoir sandbody. The %Asphaltene versus Co/Ni ratio groups the samples into tarsands and tar/heavy oil seeps. CPI varies from 0.24 to 1.00 in IREN and 0.16 to 4.13 in LODA showing that LODA attended higher level of maturation as compared to IREN. Pr/Ph ratio (0.78-3.31; 0.87-2.33), Long/Short ratio (0.72-0.77; 1.00-1.60), OEP (0.02-0.68; 0.33- 0.42), Pr/n-C17 (0.84-2.25; 0.19-1.61), Ph/n-C18 (0.04-3.73; 1.00-1.67) and C31/(C31+C29) (1.00-3.40; 1.20-3.60) revealed contributions of marine to terrestrially source of organic matter and dysoxic to marine as depositional environment. Index Terms: Depositional environment, Petroleum geochemistry, Source, Tarsand, Trace metals.