Porphyroblast rotation versus nonrotation: Conflict resolution!

Tectono-metamorphic history recorded in garnet porphyroblasts: insights from thermodynamic modelling and electron backscatter diffraction analysis of inclusion trails

“…However, the accumulated data have continued the debate about rotation and non-rotation of porphyroblasts during growth (e.g. Bell et al, 1992;Passchier et al, 1992;Fay et al, 2008;Bons et al, 2009). Today, both rotational (Prior, 1987;Chan & Crespi, 1999;Ikeda et al, 2002) and non-rotational (Fyson, 1980;Johnson, 1990;Aerden, 1995) behaviours have been documented in nature.…”

Refined Tectonic Evolution of the Betic‐Rif Orogen Through Integrated 3‐D Microstructural Analysis and Sm‐Nd Dating of Garnet Porphyroblasts

“…The kinematic significance of porphyroblast inclusion-trails has been intensely debated particularly between 1990 and 2010 (e.g., Bell et al, 1992;Bons et al, 2009;Fay et al, 2008Fay et al, , 2009Passchier et al, 1992) and since these microstructures play a central role in our study, it is appropriate to briefly outline how ideas about them have evolved. More than 100 years ago, Peach (1912) described spiral garnets from the Caledonides and already perceived what seemed an obvious explanation when they wrote: "The garnet was rotating under the impulses received from streams of material flowing with unequal velocities past its two sides.…”

Refined tectonic evolution of the Betic-Rif orogen through integrated 3-D microstructural analysis and Sm-Nd dating of garnet porphyroblasts

“…The kinematic significance of porphyroblast inclusion-trails has been intensely debated particularly between 1990 and 2010 (e.g., Bell et al, 1992;Bons et al, 2009;Fay et al, 2008Fay et al, , 2009Passchier et al, 1992) and since these microstructures play a central role in our study, it is appropriate to briefly outline how ideas about them have evolved. More than 100 years ago, Peach (1912) described spiral garnets from the Caledonides and already perceived what seemed an obvious explanation when they wrote: "The garnet was rotating under the impulses received from streams of material flowing with unequal velocities past its two sides.…”