2012
DOI: 10.1038/ngeo1401
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Intra-Panthalassa Ocean subduction zones revealed by fossil arcs and mantle structure

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Cited by 111 publications
(113 citation statements)
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“…A related question is how to interpret the different levels of velocity heterogeneity in the three sub-regions. One explanation is that the three sub-regions are from different paleo-slabs (OkuNiikappu, Kolyma-Omolon, and Anadyr-Koryak plate, from left to right), and these slabs may have different thermal and subduction histories, as Van der Meer et al (2012) have suggested.…”
Section: Origin Of the Scatterersmentioning
confidence: 99%
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“…A related question is how to interpret the different levels of velocity heterogeneity in the three sub-regions. One explanation is that the three sub-regions are from different paleo-slabs (OkuNiikappu, Kolyma-Omolon, and Anadyr-Koryak plate, from left to right), and these slabs may have different thermal and subduction histories, as Van der Meer et al (2012) have suggested.…”
Section: Origin Of the Scatterersmentioning
confidence: 99%
“…Based on geological and seismic tomographic data, Van der Meer et al (2012) reconstructed intra-oceanic arc subduction and suggested that a series of paleo-subduction zones subducted in the mid-Panthalasa ocean. Their reconstruction results show that the locations of the subduction zones $200 Myr ago overlap partly with the scatterer locations we find in the lowermost mantle.…”
Section: Origin Of the Scatterersmentioning
confidence: 99%
“…anomalies in the independent model S40RTS (22); Table S1], and geological records of mountain building of the past ∼250 My, the position and timing of past subduction episodes was determined for 28 major slabs mostly along the continental margins of Pangaea (15) These analyses implied a global average sinking velocity of slabs in the lower mantle of 1.2 ± 0.3 cm/y, yielding a "mantle memory" of subduction of some 250 My (15). Additionally, major intraoceanic subduction within the Panthalassa oceanic realm surrounding Pangaea was identified from the deep mantle structure below, and the geological records around the modern Pacific Ocean (16). These analyses combined resulted in a firstorder interpretation of global subduction history and show that all major elongated positive seismic velocity anomalies in the mantle can be consistently matched with former subduction zones, and vice versa.…”
Section: Subduction-zone Length Evolutionmentioning
confidence: 99%
“…Increasing total subductionzone length since the Triassic relates to breakup of Pangaea, when continuous subduction along the circum-Pacific continental margins was established (15,25,26) and intraoceanic subduction zones in the Panthalassa Ocean formed (16,27,28). Since the mid Jurassic, the total subduction-zone length decreased during collisions in the Tethys Ocean (15,29,30) and the MongolOkhotsk Ocean (15,26), and the demise of intraoceanic subduction zones in the Panthalassa Ocean (16), concomitant with growth of the Pacific plate (31,32).…”
Section: Subduction-zone Length Evolutionmentioning
confidence: 99%
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