1:45 PM - 3:15 PM
[O08-P41] Magma Differentiation of Bingi Bingi Complex, Southeast NSW, Austraria
Keywords:Diorite Enclave, a series of Magmatic Activities, Hydrothermal Residual, Oscillatory Zoned Structure
Nineteen people surveyed the outcrop of Bingi Bingi Point, which is adjacent to the east of Eurobodara National Park in New South Wales, Australia, over a period of five days.
This area is mainly composed of Diorite, which is consolidated so that Tonalite envelops it. There are many Tonalite branches in the Diorite. Tonalite is a unidirectional arrangement of Diorite fragments as enclaves in a block-like or spindle-shaped shape with the surroundings melted. Aprite veins arising from homogeneous magma intruded these. These were a series of magmatic activities. Finally, basalt intruded along the cracks of these plutonic rocks in two separate batches.
Currently, we are creating abrasive slides of the collected samples and observing them with a polarizing light microscope. In the future, we plan to analyze the components using the EPMA analyzer of the Faculty of Science, Kyoto University to clarify the magma differentiation process. We have already discovered several Oscillatory zoned structures developed in the plane perpendicular to the c-axis in diorite amphibole affected by hydrothermal residual from tonal magma. The Oscillatory zoned structure of amphibole is known as an indicator of the environment in which hydrothermal residual circulated, and it is expected that the environment at the end of magma differentiation can be clarified based on this structure.
This area is mainly composed of Diorite, which is consolidated so that Tonalite envelops it. There are many Tonalite branches in the Diorite. Tonalite is a unidirectional arrangement of Diorite fragments as enclaves in a block-like or spindle-shaped shape with the surroundings melted. Aprite veins arising from homogeneous magma intruded these. These were a series of magmatic activities. Finally, basalt intruded along the cracks of these plutonic rocks in two separate batches.
Currently, we are creating abrasive slides of the collected samples and observing them with a polarizing light microscope. In the future, we plan to analyze the components using the EPMA analyzer of the Faculty of Science, Kyoto University to clarify the magma differentiation process. We have already discovered several Oscillatory zoned structures developed in the plane perpendicular to the c-axis in diorite amphibole affected by hydrothermal residual from tonal magma. The Oscillatory zoned structure of amphibole is known as an indicator of the environment in which hydrothermal residual circulated, and it is expected that the environment at the end of magma differentiation can be clarified based on this structure.