2021
DOI: 10.1002/gj.4144
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Origins of the meta‐mafic rocks in the southern Dunhuang Block (NW China): Implication for tectonic framework of the southernmost Central Asian Orogenic Belt

Abstract: The Central Asian Orogenic Belt (CAOB) is one of the largest accretionary orogenic collages in the world with prominent juvenile crust addition, where the southernmost margin of the CAOB located is one hot topic in the international studies. The Dunhuang Block located to the south of the Beishan Orogen is a key position for outlining the tectonic framework of the south margin of the CAOB. However, at present, the tectonic attribution of the Dunhuang Block is still controversial. In this paper, we focus on the … Show more

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Cited by 3 publications
(2 citation statements)
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“…The metapelite (DH53), which has the protolith properties of a sedimentary Upper Continental Crust, is possibly a fragment of accreted material in a forearc that was sourced from a nearby continent. Moreover, many high‐grade metabasic blocks from the Hongliuxia mélange in southern Dunhuang where the Devonian eclogitic block was collected (H. Y. C. Wang, Chen, et al., 2017), show various affinities to IAB, E‐MORB, and normal mid‐ocean ridge basalt (N‐MORB) (Figure 6) (Shi et al., 2021). Such a major juxtaposition of rocks with widely different Mesoarchean to Paleozoic ages, and of diverse, widely different origins suggests that the Dunhuang Complex was derived from a diverse accreted forearc.…”
Section: Discussionmentioning
confidence: 99%
See 1 more Smart Citation
“…The metapelite (DH53), which has the protolith properties of a sedimentary Upper Continental Crust, is possibly a fragment of accreted material in a forearc that was sourced from a nearby continent. Moreover, many high‐grade metabasic blocks from the Hongliuxia mélange in southern Dunhuang where the Devonian eclogitic block was collected (H. Y. C. Wang, Chen, et al., 2017), show various affinities to IAB, E‐MORB, and normal mid‐ocean ridge basalt (N‐MORB) (Figure 6) (Shi et al., 2021). Such a major juxtaposition of rocks with widely different Mesoarchean to Paleozoic ages, and of diverse, widely different origins suggests that the Dunhuang Complex was derived from a diverse accreted forearc.…”
Section: Discussionmentioning
confidence: 99%
“…(f) Chondrite-normalized rare earth element (REE) diagram and chondrite concentrations from Boynton (1983). Data of metabasic rocks from southern Dunhuang are from Shi et al (2021).…”
Section: Forearc Accretionary Attributes Of the Dunhuang Complexmentioning
confidence: 99%