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Around 2.6 billion years (Ga) ago, one of the first known continent-continent collisions took place in the Wyoming Teton Range. It is interpreted that as this collisional event progressed, the northern block and the southern block amalgamated through a deformation zone called the Moran deformation zone. The northern block's primary rock types and tectonic and metamorphic conditions have been thoroughly examined and well-constrained. The tectonic and metamorphic conditions that gave rise to the main rocks of the southern block and the deformation zone are considerably less well understood. Between approximately 3.0 and 2.5 Ga, the rheology of the Earth's crust underwent a transformation (from ductile deformation nature to brittle nature) that produced distinct tectonic processes, during which the Northern and Southern Gneisses were formed. Since the components of modern continents were put together during this said transition period, it is believed that stable continent creation required tectonic-type evolution. My research mainly attempts to evaluate changes in the tectonic behavior during this transitional period because rocks in the southern Teton range have periods between 2.8 and 2.6 Ga, which record 200 million years of tectonic activity. Secondly, the age of the deformation zone named Moran deformation zone is estimated to be 2.62 Ga based on the stability of the mineral assemblage. I aim to use U-Pb geochronology on zircon or apatite minerals to calculate the absolute age of the Moran deformation zone.
Around 2.6 billion years (Ga) ago, one of the first known continent-continent collisions took place in the Wyoming Teton Range. It is interpreted that as this collisional event progressed, the northern block and the southern block amalgamated through a deformation zone called the Moran deformation zone. The northern block's primary rock types and tectonic and metamorphic conditions have been thoroughly examined and well-constrained. The tectonic and metamorphic conditions that gave rise to the main rocks of the southern block and the deformation zone are considerably less well understood. Between approximately 3.0 and 2.5 Ga, the rheology of the Earth's crust underwent a transformation (from ductile deformation nature to brittle nature) that produced distinct tectonic processes, during which the Northern and Southern Gneisses were formed. Since the components of modern continents were put together during this said transition period, it is believed that stable continent creation required tectonic-type evolution. My research mainly attempts to evaluate changes in the tectonic behavior during this transitional period because rocks in the southern Teton range have periods between 2.8 and 2.6 Ga, which record 200 million years of tectonic activity. Secondly, the age of the deformation zone named Moran deformation zone is estimated to be 2.62 Ga based on the stability of the mineral assemblage. I aim to use U-Pb geochronology on zircon or apatite minerals to calculate the absolute age of the Moran deformation zone.
Petrogenesis of the Precambrian rocks in and around Panrkidih, Puruliya District, West Bengal (Eastern India). Thesis submitted towards the partial fulfillment of the M.Sc. degree in Applied Geology, 2016.
There are two shear zones in the Puruliya District called North Puruliya Shear Zone (NPSZ) and South Puruliya Shear Zone (SPSZ). I worked at the Parnkidih area, which lies on the NPSZ, which is the eastern continuation of the shear zone through which the North Indian Block and South Indian Block were amalgamated.
Understanding the similarities between the Apatite-bearing SPSZ and the Parnkidih area on NPSZ is the main focus of my work.
Paper: Magmatic epidote in the Grenvillian granitoids of North Purulia Shear Zone, Chhotanagpur Gneissic Complex, India and its significance
Corona of sphene around opaque (magnetite) in homophanous granite. Radial cracks around the opaque suggest the probability of the former existence of radioactive elements in the latter, homophanous granite.
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