Isotopic dating rocks Video
Radiometric dating / Carbon dating isotopic dating rocks
ConcepTest: Isotopic Dating with Parent to Daughter Ratios
Despite the significant breakthroughs isotopic dating rocks the craton studies, lithospheric transformation mechanisms are yet to be fully understood. Compositional variations of mantle-derived rocks and xenoliths provide insights into the nature of the mantle lithosphere before and after the craton destruction.
It isotopic dating rocks a refractory mantle with an evolved isotopic signature. The Mesozoic mantle lithosphere was relatively fertile and highly heterogeneous. In the Cenozoic, the lithosphere in the eastern NCC is about 60—80 km thick. It has an oceanic-type mantle that is fertile in composition and depleted in the Sr-Nd isotopic signature. The dahing mantle beneath the southern and northern margins and eastern part of the NCC has been transformed significantly by peridotite-melt reactions due to the multiple subductions of isotoplc plates since the Paleozoic. Paleo-Pacific subduction and the associated dynamic processes significantly alter the lithosphere based on the distribution of craton destruction.
The involved mechanisms include mechanical intrusion of subduction plates, melt fluid erosion, and local delamination.
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This is a preview of subscription content, access via your institution. Rent this article via DeepDyve. Depletion and enrichment history of subcontinental lithospheric mantle: An Os, Sr, Nd and Pb isotopic study of ultramafic xenoliths from the northwestern Wyoming Craton. Earth Planet Sci Lett, — Timing of Precambrian melt depletion and Phanerozoic refertilization events isotopic dating rocks the lithospheric mantle of the Wyoming Craton and adjacent Central Plains Orogen. Lithos, — Physical, chemical, and chronological characteristics of continental mantle.
Rev Geophys, RG Ultramafic xenoliths in Mesozoic diorite in west Shandong Province. Subduction-related metasomatism in the thinning isotopic dating rocks Evidence from a composite dunite-orthopyroxenite xenolith entrained in Mesozoic Laiwu high-Mg diorite, North China Craton. Geochem Geophys Geosyst, 6: Q Temporal evolution of the lithospheric mantle beneath the eastern North China Craton.
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