The Arieseni Nappe was the single tectonic unit of the Biharia Nappe System involving unmetamorphosed, red Permian and metamorphosed, green Permian deposits. Deformational, microscopic and x-Ray diffraction studies, suggest a tectonic relationship between the two sequences. Consequently, the red Permian deposits have been attributed to the Moma Nappe, and the green Permian rocks to the Poiana Nappe. Thus, the Arieseni Nappe disappeared. The thrust between the red Permian and the green Permian deposits realized later during the emplacement of Apusenides, due to an east-verging movement.
Balintoni, I.; Ghergari, L.; and Băbuț, T.
The Arieseni Nappe, or the Moma and Poiana Nappes?,
Studia UBB Geologia
Available at: https://scholarcommons.usf.edu/geologia/vol47/iss2/art2