Author:
Permana H,Awdia S A,Patonah A,Solihin S
Abstract
Abstract
The ultramafic rock of the Wasuponda mélange complex and the Wolo cape areas, Sulawesi classified as lhezolite, harzburgite, dunite, olivine websterite, wherlite and serpentinite. The rocks have undergone dynamic recrystallization through bulging, subgrain rotation and grain boundary migration. The olivine neoblast grain size varies from a very fine size to a mean size of around 75 μm and a mean size range of 150, 225, 300 and 425 μm. The neoblast grain size indicates that dynamic recrystallization took place with various stress at about 13 MPa to 52 MPa. The optimum recrystallization of the Malili-Wasuponda peridotite occurs at 52 MPa, while rock peridotite of the Wolo cape formed at optimum stress reached 30-32 MPa.