Erratum to “High-Ti and low-Ti mafic potassic magmas: Key to plume—lithosphere interactions and continental flood-basalt genesis” [Earth Planet. Sci. Lett. 136 (1995) 149–165]

Gibson, S. A.; Thompson, R. N.; Dickin, A. P.; Leonardos, O. H.

doi:10.1016/0012-821x(96)00041-6

Cited by 66 publications

(3 citation statements)

References 48 publications

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“…The incompatibility of Ti is similar to that of Y (Gibson et al, 1996). However, Ti tended to enter the melts during partial melting when the depth of the magma source increased.…”

Section: Effects Of the Lithospheric Thickness On Volcanic P Contentmentioning

confidence: 64%

Phosphorus Variations in Volcanic Sequences Reveal the Linkage Between Regional Tectonics and Terrestrial Biota Evolution

Tang

Foley

et al. 2022

Geochem Geophys Geosyst

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The Middle‒Late Mesozoic massive volcanism formed a considerable thickness of volcanic‐sedimentary strata in western Liaoning, northern China. Concomitantly, it elevated phosphorus (P) availability for the rapid bloom of the terrestrial Yanliao and Jehol biotas, which developed highly abundant biodiversity and biomass. Hence, systematic tectonic and geochemical analyses of these volcanic‐sedimentary sequences with a significant P fluctuation would advance our understanding of the coevolutionary relationship between terrestrial biotas and regional tectonics. Here, we show that the secular variation of P availability in the Mesozoic volcanic rocks were the immediate results of the changes in volcanic intensity and lithospheric thickness controlled by the geological background of the cratonic destruction resulting from the paleo‐Pacific plate subduction. This study reveals the constraint effect of regional tectonics on the evolution of terrestrial ecosystems through the volcanism and P cycle.

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“…The incompatibility of Ti is similar to that of Y (Gibson et al, 1996). However, Ti tended to enter the melts during partial melting when the depth of the magma source increased.…”

Section: Effects Of the Lithospheric Thickness On Volcanic P Contentmentioning

confidence: 64%

Phosphorus Variations in Volcanic Sequences Reveal the Linkage Between Regional Tectonics and Terrestrial Biota Evolution

Tang

Foley

et al. 2022

Geochem Geophys Geosyst

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“…Furthermore, these mafic rocks even have higher La/Nb ratios than average continental upper crust. Instead, their high La/Nb ratios are similar to those of the Paraná low-Ti mafic potassic rocks that were inferred by Gibson et al (1996) to have been derived by partial melting of subcontinental lithospheric mantle (Figure 11d). These geochemical features argue against crustal assimilation, but are more consistent with a subduction-modified mantle source.…”

Section: Origin Of Late Triassic Mafic Rocksmentioning

confidence: 65%

“…In (a), (c), and (d), also shown are the average MORB, continental upper crust (Taylor and McLennan, 1985;Schmidt et al 2004), and globally subducted sediments (GLOSS) (Plank and Langmuir 1998). In (d), also shown is the field of the Paraná low-Ti mafic potassic rocks in Brazil and Paraguay (Gibson et al 1996). Symbols as in Figure 9.…”

Section: Origin Of Early Jurassic Mafic Rocksmentioning

confidence: 99%

Repeated slab advance–retreat of the Palaeo-Pacific plate underneath SE China

Jiang

Wang

Liu

et al. 2015

International Geology Review

141

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Southeast China, an important part of the circum-Pacific magmatic-metallogenetic belt, was characterized by late Mesozoic extensive magmatism and related metallogenesis. It is now generally accepted that this magmatism was related to subduction of the Palaeo-Pacific plate, and a series of tectonic models such as normal subduction, shallow subduction, and flat-slab subduction have been suggested. Here we propose a new tectonic model involving repeated slab advanceretreat of the Palaeo-Pacific plate on the basis of new geochronological and geochemical data of Late Triassic to Early Jurassic mafic rocks and Early Jurassic A-type granites in southern Jiangxi and western Fujian provinces. The results indicate that Late Triassic (ca. 228 Ma) mafic rocks are shoshonitic, formed in a post-collisional regime of the Tethyan tectonic domain. Early Jurassic mafic rocks are sodic, emplaced in a continental arc setting coupled with the subduction of the Palaeo-Pacific plate. Early Jurassic (ca. 189 Ma) granites, occurring as a NNE-trending belt, belong to the A 2 group and formed in an extension setting caused by slab break-off. There are an other four A-type granite belts in southeast China, i.e. the Late Triassic, Late Jurassic, Early Cretaceous, and Late Cretaceous A-type granite belts, respectively. Late Triassic (229-221 Ma) A-type granites occur as an ENE-trending belt and were coincident with the Late Triassic mafic magmatism. Late Jurassic (163-153 Ma), Early Cretaceous (136-124 Ma), and Late Cretaceous (101-91 Ma) A-type granite belts, together with the Early Jurassic (189 Ma) A-type granite belt, are all NNE-trending, parallel to the present coastline. The Late Jurassic belt is located further inland, on the west side of the Early Jurassic belt. The Early Cretaceous belt almost overlaps the Early Jurassic belt and the Late Cretaceous belt is located at the coastal area of southeast China. Integrating these observations, we propose a repeated slab-advance-retreat model for the late Mesozoic magmatic evolution of southeast China. Palaeo-Pacific plate subduction underneath southeast China initiated in the Late Triassic Rhaetian and reached southern Jiangxi by ca. 197 Ma, followed by slab rollback during 197-191 Ma and by slab break-off at ca. 189 Ma. Then slab advance was reestablished with the northwestward subduction approaching southern Hunan at ca. 178 Ma. From ca. 174 Ma, slab rollback reinitiated and gradually migrated from inland to the coastal area. This repeated slab-advance-retreat model is helpful to further understand the geodynamic mechanism of the late Mesozoic tectono-magmatism and related metallogenesis of southeast China.

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