Sulfide Inclusions in Diamonds:Tracing the Early Evolution of Earth and the Recycling of Ancient Crustal Materials
The early evolution of Earth and the recycling of ancient crustal materials remain pivotal and challenging areas of geoscience research.Addressing these issues requires direct material records that capture key geological processes.Diamonds,spanning a formation age range from the Late Archean to the Mesozoic and predominantly hosted in the cratonic lithospheric mantle(extending into the mantle transition zone and even the lower mantle),represent unparalleled records owing to their long growth history and extensive spatial distribution.The sulfide inclusions encapsulated during diamond growth,including subducted sedimentary sulfides and mantle-derived primary sulfides,provide invaluable geochronological and isotopic constraints on the formation and evolution of cratons,as well as on subduction events within the framework of supercontinent cycles.Studies in the past two decades have yielded critical insights:(1)sulfide inclusions are broadly classified into mantle-derived primary sulfides and subducted crustal sulfides;(2)Re-Os isotopic systematics of sulfide inclusions offer robust age constraints on diamond formation,providing essential evidence for the initiation of early plate tectonics;and(3)Mass-Independent Sulfur isotope Fractionation(MIF-S)in sulfide inclusions preserves signals of crustal-derived sedimentary sulfides formed under anoxic atmospheric conditions prior to the Great Oxidation Event,offering significant implications for reconstructing Earth's early sulfur cycle and tectonic regimes.This review summarizes advances in the study of sulfide inclusions in diamonds,identifies outstanding challenges,and provides perspectives on the advancing research in this field,with an emphasis on the underexplored diamond sulfide inclusions from China.
diamondsulfide inclusionsRe-Os datingmass independent sulfur isotope fractionationrecycling of ancient crustal materialsplate tectonics
万方数据
维普
