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Fig. 3 | Progress in Earth and Planetary Science

Fig. 3

From: Carbonate clumped isotope thermometry of fault rocks and its possibilities: tectonic implications from calcites within Himalayan Frontal Fold-Thrust Belt

Fig. 3

a Type-I deformation twins (arrows) have predominantly developed within calcites veins from the gouge of NT (PJ5), implying a temperature of less than 170 °C (Ferrill et al. 2004). b Limited development of type-I and type-II twins in the calcite veins of PWN1. c Predominance of type-II twins in the calcite veins of CM2. d Predominance of type-II twins in the calcite veins of KP1. e Type-II (short arrow) and type-III (long arrow) twins with few recrystallized calcite grains (small grains in the left side) occur within footwall calcite veins near MBT contact (GM6a). f Type-I deformation twins (short arrow) have predominantly developed in the older dilational calcite veins occurring in limestones (GM8a) in footwall of MBT. Few grains have developed type-II twins (long arrow). g Fossiliferous limestone sample CM1 showing foraminifera fossils with limited deformation twins. h Few twins (arrows) are developed in the fine-grained stromatolitic bodies occurring in the hanging wall of MBT (GM5I)

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