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Richard J. Arculus
Australian National University
249Publications
54H-index
10.1kCitations
Publications 249
Newest
Published on Sep 1, 2019in Earth and Planetary Science Letters 4.64
Oliver Nebel21
Estimated H-index: 21
(Monash University),
Paolo A. Sossi13
Estimated H-index: 13
(IPGP: Institut de Physique du Globe de Paris)
+ 5 AuthorsSaskia Ruttor (Monash University)
Abstract Ocean-island basalts (OIB) are the products of intra-plate mantle melting above mantle plumes. These hot, buoyant upwellings rise from the deep mantle, possibly the core-mantle boundary, to the Earth's surface. Radiogenic isotope signatures of trace elements in OIB are consistent with a variety of crustally-derived recycled components in their source that are suggested to reside in the plume as eclogite or their pyroxenitic melt-reaction products. The global OIB compositional spectrum e...
Published on Jun 1, 2019in Earth and Planetary Science Letters 4.64
Elena Melekhova7
Estimated H-index: 7
,
David Schlaphorst2
Estimated H-index: 2
+ 4 AuthorsRichard J. Arculus54
Estimated H-index: 54
Abstract We reconstruct crustal structure along the Lesser Antilles island arc using an inversion approach combining constraints from petrology of magmatic crustal xenoliths and seismic receiver functions. Xenoliths show considerable island-to-island variation in xenolith petrology from plagioclase-free ultramafic lithologies to gabbros and gabbronorites with variable proportions of amphibole, indicative of changing magma differentiation depths. Xenoliths represent predominantly cumulate composi...
Published on May 16, 2019in Geochemistry Geophysics Geosystems 2.95
Anders McCarthy5
Estimated H-index: 5
(UoB: University of Bristol),
Anders McCarthy (UoB: University of Bristol)+ 3 AuthorsOsamu Ishizuka31
Estimated H-index: 31
(AIST: National Institute of Advanced Industrial Science and Technology)
Published on Mar 1, 2019in Oceanography 3.91
Richard J. Arculus54
Estimated H-index: 54
,
Michael Gurnis63
Estimated H-index: 63
+ 3 AuthorsRupert Sutherland35
Estimated H-index: 35
The association of deep-sea trenches—steeply angled, planar zones where earthquakes occur deep into Earth’s interior—and chains, or arcs, of active, explosive volcanoes had been recognized for 90 years prior to the development of plate tectonic theory in the 1960s. Oceanic lithosphere is created at mid-ocean ridge spreading centers and recycled into the mantle at subduction zones, where down-going lithospheric plates dynamically sustain the deep-sea trenches. Study of subduction zone initiation ...
Published on Mar 1, 2019in Chemical Geology 3.62
Matthew J. Valetich1
Estimated H-index: 1
(ANU: Australian National University),
John A. Mavrogenes28
Estimated H-index: 28
(ANU: Australian National University)
+ 1 AuthorsSusumu Umino18
Estimated H-index: 18
(Kanazawa University)
Abstract Melt inclusions and submarine volcanic glasses of boninitic composition are well preserved in beach sands from the islands of Chichijima and Mukojima along the Bonin Ridge. Volcanic glass as well as orthopyroxene- and spinel hosted melt inclusions in these sands span almost the entirety of boninite series melt compositions, ranging from >18 wt% to
Published on Dec 1, 2018in Geology 5.01
Anders McCarthy5
Estimated H-index: 5
(UoB: University of Bristol),
Cyril Chelle-Michou7
Estimated H-index: 7
(UoB: University of Bristol)
+ 2 AuthorsJon Blundy10
Estimated H-index: 10
(UoB: University of Bristol)
Published on Dec 1, 2018in Contributions to Mineralogy and Petrology 3.23
Antoine Bénard8
Estimated H-index: 8
(Monash University),
Charles Le Losq9
Estimated H-index: 9
(ANU: Australian National University)
+ 1 AuthorsRichard J. Arculus54
Estimated H-index: 54
(ANU: Australian National University)
We report the abundances of major and lithophile trace elements and volatiles (H2O, Cl and S) in orthopyroxenite veins cutting mantle-derived, spinel harzburgite xenoliths from the active Ritter volcano in the West Bismarck Arc (Papua New Guinea). The veins preserve sulfide-bearing glass coexisting with crystals. The glass formed by the quench of residual liquids left after crystallisation of abundant orthopyroxene, variable amounts of clinopyroxene, and minor olivine and spinel from silicate me...
Published on Dec 1, 2018in Nature Communications 11.88
Antoine Bénard8
Estimated H-index: 8
(Monash University, Clayton campus),
Kevin Klimm12
Estimated H-index: 12
(Goethe University Frankfurt)
+ 7 AuthorsDmitri A. Ionov44
Estimated H-index: 44
(University of Montpellier)
Subduction zone magmas are more oxidised on eruption than those at mid-ocean ridges. This is attributed either to oxidising components, derived from subducted lithosphere (slab) and added to the mantle wedge, or to oxidation processes occurring during magma ascent via differentiation. Here we provide direct evidence for contributions of oxidising slab agents to melts trapped in the sub-arc mantle. Measurements of sulfur (S) valence state in sub-arc mantle peridotites identify sulfate, both as cr...
Published on Nov 1, 2018in Geochimica et Cosmochimica Acta 4.26
Oliver Nebel21
Estimated H-index: 21
(Monash University),
Paolo A. Sossi13
Estimated H-index: 13
(IPGP: Institut de Physique du Globe de Paris)
+ 6 AuthorsRichard J. Arculus54
Estimated H-index: 54
(ANU: Australian National University)
Abstract Iron isotopes in ocean floor basalts (OFB) away from convergent margins comprising mid-ocean-ridge and ocean island lavas show significant variation of >0.4‰ (expressed in the delta notation δ 57 Fe relative to IRMM-014), but processes responsible for this variation remain elusive. Bond-valence theory predicts that valence states (Fe 3+ vs. Fe 2+ ) control Fe isotopes during partial melting and crystal fractionation along the liquid line of descent and thus contribute substantially to t...
Published on May 1, 2018in Geochimica et Cosmochimica Acta 4.26
Rosemary Hickey-Vargas18
Estimated H-index: 18
(FIU: Florida International University),
Gene M. Yogodzinski21
Estimated H-index: 21
(USC: University of South Carolina)
+ 5 AuthorsRichard J. Arculus54
Estimated H-index: 54
(ANU: Australian National University)
Abstract The Izu-Bonin-Mariana (IBM) island arc formed following initiation of subduction of the Pacific plate beneath the Philippine Sea plate at about 52 Ma. Site U1438 of IODP Expedition 351 was drilled to sample the oceanic basement on which the IBM arc was constructed, to better understand magmatism prior to and during the subduction initiation event. Site U1438 igneous basement Unit 1 (150 m) was drilled beneath 1460 m of primarily volcaniclastic sediments and sedimentary rock. Basement ba...
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