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Stenian sediments (<1065 Ma) and Tonian A- and I-type magmatism (1000–970 Ma) along the western margin of the central Aravalli orogen, NW India: Petrogenetic and geodynamic implications by Parampreet Kaur; Armin Zeh; Naveen Chaudhri; Manisha; Jaideep K. Tiwana; Prabhakar Dutta is a Earth and Planetary Sciences article available to read on EtoBox.
What is Stenian sediments (<1065 Ma) and Tonian A- and I-type magmatism (1000–970 Ma) along the western margin of the central Aravalli orogen, NW India: Petrogenetic and geodynamic implications about?
The Meso- to Neoproterozoic tectonic evolution of the Aravalli orogen in northwestern India is poorly understood because of limited combined isotopic-geochemical constraints on magmatic and sedimentary rocks. In this study, we present new zircon U-Pb-Hf isotope and whole-rock geochemical data for the Sendra Granitoid Suite and associated host quartzite of the Sendra Formation (Kumbhalgarh Group of the South Delhi Supergroup). Detrital zircon grains reveal a maximum age of deposition during the Stenian at 1065 Ma, and two major sources in the hinterland: (1) a Neoarchean to Paleoproterozoic basement (HfTDM = 2.7 – 2.0 Ga) affected by crustal reworking at 1.8–1.6 Ga, and (2) a juvenile terrain derived from the depleted mantle at ca. 1.6 Ga, and periodically reworked until 1.06 Ga in the Aravalli hinterland. Sediment deposition occurred in a passive margin setting. The post-collisional Sendra granitoids intruded during the Tonian between 1000 and 970 Ma from multiple sources. The highly superchondritic I-type granitoids (εHft = +10.8 to +12.1; HfTDM = 1.22 Ga) were formed from the fractional crystallisation of calc-alkaline mafic magma generated from partial melting of a mantle wedge.
Who reads Stenian sediments (<1065 Ma) and Tonian A- and I-type magmatism (1000–970 Ma) along the western margin of the central Aravalli orogen, NW India: Petrogenetic and geodynamic implications?
It is typically read by researchers, students, and practitioners in Earth and Planetary Sciences.
- Author
- Parampreet Kaur; Armin Zeh; Naveen Chaudhri; Manisha; Jaideep K. Tiwana; Prabhakar Dutta
- Publisher
- Elsevier BV
- Published
- 2023
- Language
- EN
- Field
- Earth and Planetary Sciences (Physical Sciences)