A quantitative method for inventory and assessment of geoheritage in the mountains of Morocco: a case study of the Tagleft syncline in Beni Mellal Atlas. This article proposes a quantitative method for the identification and assessment of geological and geomorphological sites in the Tagleft syncline. This method proposes new criteria of evaluation relatively in conformity with the characteristics of the Moroccan mountain by making reference to the various methods which were already carried out in the European countries. The objective is thus to reduce the subjectivity of the evaluator, to clarify deeply the criteria composing the assessment values (scientific value, additional values and use value). This method is finally applied on the geological and geomorphological sites of the syncline of Tagleft, Atlas of Beni Mellal, Morocco.