First direct evidence of sedimentary carbonate recycling in subduction-related xenoliths

Liu, Yongsheng; He, Detao; Gao, Chengjin; Foley, Stephen F.; Gao, Shan; Hu, Zhaochu; Zong, Keqing; Chen, Haihong

doi:10.1038/srep11547

Cited by 69 publications

(37 citation statements)

References 62 publications

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“…We offer this as an admittedly speculative possibility. A recent report of sediment-derived carbonatite melt pockets in mantle xenoliths from Dalihu (northern China) by Liu et al (2015) also shows distinct positive Sr anomalies and is thus consistent with the above speculation.…”

Section: A Carbonated Peridotite Source?supporting

confidence: 71%

Rapid lithospheric thinning of the North China Craton: New evidence from cretaceous mafic dikes in the Jiaodong Peninsula

et al. 2016

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The North China Craton is a classic case for the destruction of an ancient craton, in that it records the loss of more than 100 km of ancient refractory lithospheric mantle during the late Mesozoic and early Cenozoic. However, the mechanisms for this lithospheric thinning remain controversial in large part due to the lack of any systematic investigations of the Mesozoic asthenospheric mantle via its derived mafic rocks, which are key to understand the thinning processes. In this paper, we present detailed zircon U-Pb geochronology, elemental geochemistry, and Sr-Nd-Hf isotopic data for lamprophyres and diabase-porphyries of the Jiaodong Peninsula, in the eastern North China Craton in order to place constraints on models for lithospheric thinning. Our results show that the lamprophyres and diabase-porphyries are derived from the convective asthenospheric mantle via different degrees of partial melting, and that this mantle source was previously modified by carbonatitic liquids. Zircon LA-ICP-MS U-Pb dating suggests an emplacement age for these rocks of 123-121 Ma, the earliest evidence for asthenospherically-derived melts in the Jiaodong Peninsula so far. This emplacement age indicates that the thickness of the lithosphere in the Jiaodong Peninsula was relatively thin at that time. Co-occurrence of the asthenospheric and lithospheric mantle-derived mafic rocks as well as high-Mg adakites record a rapid transition from lithospheric to asthenospheric mantle sources, indicating that the lithosphere beneath the Jiaodong Peninsula was rapidly detached just prior to ca. 120 Ma. Lithospheric thinning of the North China Craton may have been initiated from the Jiaodong Peninsula and Bohai Sea and then propagated towards the interior of the craton.

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Section: A Carbonated Peridotite Source?supporting

confidence: 71%

Rapid lithospheric thinning of the North China Craton: New evidence from cretaceous mafic dikes in the Jiaodong Peninsula

et al. 2016

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“…120 km) at destructive plate margin by subduction of carbonate-rich sediments to form a carbonatitic metasomatic agent (Poli, 2015). Liu et al (2015) has also recently reported evidence for sedimentary carbonate recycling from subduction-related xenoliths.…”

Section: Shift From Leucite-free To Leucite-bearing Ultrapotassic Rocksmentioning

confidence: 96%

The role of carbon from recycled sediments in the origin of ultrapotassic igneous rocks in the Central Mediterranean

Conticelli

Avanzinelli

Ammannati

et al. 2015

Lithos

103

102

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The Central Mediterranean region is one of the most important areas on Earth for studying subduction-related potassic and ultrapotassic magmatism, derived from partial melting of the metasomatised lithospheric mantle wedge. In this region, leucite-free (i.e., lamproite) and leucite-bearing (i.e., kamafugite, leucitite, and plagioleucitite) ultrapotassic rocks closely occur, in a time-related progression, linked to the evolution of both the mantle source and the regional tectonic regime. Time- and space-related magmatism migration followed the roll-back of the subducting slab and the anticlockwise drift of the Italian Peninsula. Leucite-free silica-rich lamproites are restricted to the early stage of magmatism and are associated with ultrapotassic shoshonites and high-K calc-alkaline volcanic rocks. Leucite-bearing (i.e., Roman Province) rocks are erupted consistently later than lamproite-like and associated shoshonitic rocks, with post-leucititic volcanism occurring in the late stage of volcanic activity with eruption of alkali-basaltic to latitic and trachytic rocks, often after major caldera-forming events. Present-day ultrapotassic volcanism is restricted to the Neapolitan area. Central Mediterranean potassic and ultrapotassic rocks are extremely enriched in incompatible trace elements with variable fractionation of Ta, Nb, and Ti in comparison to Th and large ion lithophile elements (LILE). They are also variably enriched in radiogenic Sr and Pb and unradiogenic Nd. The main geochemical and isotopic signatures are consistent with sediment recycling within the mantle wedge via subduction. A twofold metasomatism, induced by the recycle of pelitic sediments and dehydration of lawsonite-bearing schists generates the early metasomatic events that enriched the mantle wedge from which leucite-free ultrapotassic rocks (i.e., lamproite) were generated. Recycling of carbonate-rich pelites played an important role in the shift to silica-undersaturated ultrapotassic rocks (kalsilite- and leucite-bearing) of the classic ‘Roman province’

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“…In order to avoid possible contamination, Al2O3 abrasive papers only were used to prepare the polished sections. The detailed sample preparation procedure is given in Liu et al (2015).…”

Section: Methodsmentioning

confidence: 99%

Paleo-Asian oceanic slab under the North China craton revealed by carbonatites derived from subducted limestones

Chen

Liu

Foley

et al. 2016

Geology

Self Cite

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It is widely accepted that the lithospheric mantle under the North China Craton (NCC) has experienced comprehensive refertilization due to input from surrounding subducted slabs. However, the possible contribution from the Paleo-Asian Oceanic slab from the north is poorly constrained, largely because of the lack of convincing evidence for the existence of this slab under the NCC. We report here carbonatite intruding into Neogene alkali basalts in the Hannuoba region, close to the northern margin of the NCC.Trace element patterns with positive Sr and U anomalies, negative HFSE (Nb, Ta, Zr, Hf

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First direct evidence of sedimentary carbonate recycling in subduction-related xenoliths

Cited by 69 publications

References 62 publications

Rapid lithospheric thinning of the North China Craton: New evidence from cretaceous mafic dikes in the Jiaodong Peninsula

Rapid lithospheric thinning of the North China Craton: New evidence from cretaceous mafic dikes in the Jiaodong Peninsula

The role of carbon from recycled sediments in the origin of ultrapotassic igneous rocks in the Central Mediterranean

Paleo-Asian oceanic slab under the North China craton revealed by carbonatites derived from subducted limestones

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