GEOLOGY, STRUCTURE, AND ORIGIN
OF THE MAGNESITE DEPOSITS OF PISO POINT,
MUNICIPALITY OF LUPON, DAVAO PROVINCE


L. SANTOS-YNIGO, M. R. LUCAS, and R. DE GUZMAN

 

 

 

ABSTRACT

 
The Lupon magnesitc deposits are concentrated at the extremities of seaward-jutting spurs of an elliptical mass of peridotite. Peripheral remnants of layered gabbro suggests an original domal structure for the ultramafic complex, later messed up during 2 separate periods of deformation, namely: (1) an early period of thrusting movements, and (2) a later period of strike-slip movements. The complex is cut by late gabbro and anorthosite dikes which apparently came up during a quiet interval between the 2 periods of major deformation.

 

 

 

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