UIS Commission on Karst Hydrogeology and Speleogenesis
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Original article
Rodrigues, P.
Speleogenesis of alecrineiros shaft

The Alecrineiros Shaft is a cave developed in the St. Antonio Plateau, Portugal. This cave develops on a gently dipping monocline structure, along two major fracture families. These discontinuities are sub-vertical and exhibit the following directions: E-W to N70W and N-S to N30E. The shaft presents evidences of several speleogenetic processes compatible with a genesis and development in a vadose regime at the base of the epikarstic zone. 

Shafts; St, Antonio Plateau; Speleogenesis; Vadose regime; Epikarst
Rodrigues, P., 2011, Speleogenesis of alecrineiros shaft , Speleogenesis and Evolution of Karst Aquifers , 22 - 24