PhD defence: Paleomagnetic studies of Jurassic and Cretaceous rocks in the Eastern Qiangtang Terrane, Tibetan Plateau, China

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This thesis presents research on the paleogeographic data of Early Cretaceous granites and Mid-Late Jurassic limestones in the Zaduo area, Eastern Qiangtang Terrane, Tibetan Plateau, China.

The granite study provides further insight into the Lhasa-Qiangtang collision, while the limestones have been remagnetised due to the India-Eurasia collision. The magnetic fabric of the remagnetised limestones documented the NNE-SSW oriented compression during the remagnetisation. A comparative study of the remagnetised and unremagnetised rocks, which mainly concentrates on their rock magnetic properties, was also carried out. The combination of gravity and paleomagnetic data reveals a coupled lithosphere-scale oroclinal deformation of the eastern ending of the Qiangtang Terrane.

The thesis consists of five chapters. Chapter 1 investigates an Early Cretaceous granite in the Zaduo area and presents a new paleomagnetic investigation on the granite. Chapter 2 discusses the remagnetisation of the Jurassic limestones in the Zaduo area and its implications for the India-Eurasia collision. Chapter 3 is about the lithosphere-scale oroclinal deformation of the eastern ending of the Qiangtang Terrane. Chapter 4 focuses on the remagnetisation of the limestones and the NNE-SSW oriented compression during the India-Eurasia collision, and Chapter 5 is about the comparative study of the remagnetised and unremagnetised rocks.

Start date and time
End date and time
Location
Utrecht University Hall, Domplein 29, and online via this link
PhD candidate
Qiang Fu
Dissertation
Paleomagnetic studies of Jurassic and Cretaceous rocks in the Eastern Qiangtang Terrane, Tibetan Plateau, China
PhD supervisor(s)
Prof. Dr Wout Krijgsman
Co-supervisor(s)
Dr Mark Dekkers