Rotation rate versus growth rate of syntectonic porphyroblasts: the controlling parameter of the shape of the inclusion trail

Mandal, Nibir ; Banerjee, Sanjib (1987) Rotation rate versus growth rate of syntectonic porphyroblasts: the controlling parameter of the shape of the inclusion trail Tectonophysics, 136 (1-2). pp. 165-169. ISSN 0040-1951

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Official URL: http://linkinghub.elsevier.com/retrieve/pii/004019...

Related URL: http://dx.doi.org/10.1016/0040-1951(87)90339-8

Abstract

The development of curved inclusion trails within syntectonic porphyroblasts has long been explained in the light of the rotation of the porphyroblast with respect to the external foliation. The present paper shows that both the rate of rotation and the growth rate of the porphyroblast play a role in the development of the inclusion pattern. An equation is derived involving the ratio of growth rate and rotation rate that enables computation of the rotation rate from natural porphyroblasts and also offers a measure of the noncoaxiality of a deformation

Item Type:Article
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ID Code:22039
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