The Cima Lunga Nappe is a tectonic unit of the Eastern Lepontic (Ticino Culmination). It is made up of paragneisses, orthogneisses, sheets of marble and calcschist as well as lenses of mafic and ultramafic rocks that locally have an incoherent character. Eclogitic mineral assemblages are widespread in the mafic and ultramafic rocks. Sheath folds around the disrupted competent mafic and ultramafic lenses suggest intense shearing within a shear zone at the base of the Maggia Nappe. According to most authors, the Cima Lunga Nappe is connected in the east, to the Adula Nappe in the lower Valle Mesolcina.

Gneiss leucocratico a due miche con enclavi di anfibolite e nidi di biotite della Falda della Cima-Lunga.

Ortogneiss leucocratico a due miche, p.p. occhiadino della Falda della Cima-Lunga.

Gneiss oligoclasico chiaro a due miche, con microclino, a grana fine, con livelli mesocratici, della falda della Cima Lunga.

Eklogitisierter Peridotit der Cima-Lunga-Decke.

Eklogisierter Granat-Lherzolit der Cima-Lunga-Decke.