Experimental determination of the partitioning behavior of rare earth and high field strength elements between pargasitic amphibole and natural silicate melts

Hilyard, Mark; Nielsen, Roger L.; Beard, James S.; Patiño-Douce, A. E.; Blencoe, James G.

doi:10.1016/s0016-7037(99)00379-8

Cited by 59 publications

(25 citation statements)

References 72 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Because Ti is more compatible than Zr in amphibolite (Hilyard et al . ), melt in equilibrium with amphibolitic residue has a high Zr/Ti. With the consensus that magmas of the Quaternary volcanic front of the Izu–Ogasawara Arc are produced by fluxing the mantle by fluids and melts derived from subducted sediments and oceanic crust (Taylor & Nesbitt ; Ishizuka et al .…”

Section: Discussionmentioning

confidence: 99%

“…(), amphibole melt: H ilyard et al . (), plagioclase melt: S mith and A simow (). H ahajima basalts are from T aylor and N esbitt (), Y ajima et al .…”

Section: Discussionmentioning

confidence: 99%

“…The modeling also indicates that Zr enrichment of boninites can be explained by contributions of partial melt of hydrated basaltic slab with amphibolite residue. Because Ti is more compatible than Zr in amphibolite (Hilyard et al 2000), melt in equilibrium with amphibolitic residue has a high Zr/Ti. With the consensus that magmas of the Quaternary volcanic front of the Izu-Ogasawara Arc are produced by fluxing the mantle by fluids and melts derived from subducted sediments and oceanic crust (Taylor & Nesbitt 1998;Ishizuka et al 2007), the slab melting under amphibolite facies indicates a much hotter shallow wedge mantle at ca 48 Ma than in Quaternary time.…”

Section: Petrogenesis Of Boninites From the Mukojima Island Groupmentioning

confidence: 99%

See 2 more Smart Citations

Eocene volcanism during the incipient stage of Izu–Ogasawara Arc: Geology and petrology of the Mukojima Island Group, the Ogasawara Islands

2012

View full text Add to dashboard Cite

The Ogasawara Islands mainly comprise Eocene volcanic strata formed when the Izu–Ogasawara–Mariana Arc began. We present the first detailed volcanic geology, petrography and geochemistry of the Mukojima Island Group, northernmost of the Ogasawara Islands, and show that the volcanic stratigraphy consists of arc tholeiitic rocks, ultra‐depleted boninite‐series rocks, and less‐depleted boninitic andesites, which are correlatable to the Maruberiwan, Asahiyama and Mikazukiyama Formations on the Chichijima Island Group to the south. On Chichijima, a short hiatus is identified between the Maruberiwan (boninite, bronzite andesite, and dacite) and Asahiyama Formation (quartz dacite and rhyolite). In contrast, these lithologies are interbedded on Nakodojima of the Mukojima Island Group. The stratigraphically lower portion of Mukojima is mainly composed of pillow lava, which is overlain by reworked volcaniclastic rocks in the middle, whereas the upper portion is dominated by pyroclastic rocks. This suggests that volcanic activity now preserved in the Mukojima Island Group records growth of one or more volcanoes, beginning with quiet extrusion of lava under relatively deep water followed by volcaniclastic deposition. These then changed into moderately explosive eruptions that took place in shallow water or above sea level. This is consistent with the uplift of the entire Ogasawara Ridge during the Eocene. Boninites from the Mukojima Island Group are divided into three types on the basis of geochemistry. Type 1 boninites have high SiO2 (>57.0 wt.%) and Zr/Ti (>0.022) and are the most abundant type in both Mukojima and Chichijima Island Groups. Type 2 boninites have low SiO2 (<57.1 wt.%) and Zr/Ti (<0.014). Type 3 boninites have 57.6–60.7 wt.% SiO2 and are characterized by high CaO/Al2O3 (0.9–1.1). Both type 2 and 3 boninites are common on Mukojima but are rare in the Chichijima Island Group.

show abstract

Section: Discussionmentioning

confidence: 99%

“…(), amphibole melt: H ilyard et al . (), plagioclase melt: S mith and A simow (). H ahajima basalts are from T aylor and N esbitt (), Y ajima et al .…”

Section: Discussionmentioning

confidence: 99%

Section: Petrogenesis Of Boninites From the Mukojima Island Groupmentioning

confidence: 99%

See 1 more Smart Citation

Eocene volcanism during the incipient stage of Izu–Ogasawara Arc: Geology and petrology of the Mukojima Island Group, the Ogasawara Islands

2012

View full text Add to dashboard Cite

show abstract

“…Phase proportions used in the models (Table 3) were derived from modal proportions in gabbroic cumulates [ Meyer et al , 1989; Dick et al , 2000] and melting experiments on natural samples [ Grove et al , 1992; Sisson and Grove , 1993; Toplis and Carroll , 1995]. REE partition coefficients for plagioclase, clinopyroxene, and amphibole have been shown to be strongly dependent on melt composition and temperature [ Sisson , 1991, 1994; Klein et al , 1997; Hilyard et al , 2000]. As an example, amphibole‐melt partition coefficients for Ce and Sm increase by a factor of 7 as melt composition changes from basaltic andesite to rhyolite [ Sisson , 1994; Klein et al , 1997].…”

Section: Discussionmentioning

confidence: 99%

Metasomatism of oceanic gabbros by late stage melts and hydrothermal fluids: Evidence from the rare earth element composition of amphiboles

Gillis

Meyer

2001

Geochem Geophys Geosyst

View full text Add to dashboard Cite

We report new compositional and textural observations on amphiboles hosted in oceanic gabbros recovered from the slow spreading Mid‐Atlantic (MARK area) and Southwest Indian (Hole 735B) ridges and the fast spreading East Pacific Rise (Hess Deep) in an effort to find a set of reliable criteria that unequivocally distinguishes magmatic from hydrothermal amphibole. We find that there is no simple set of criteria that may be applied to distinguish between these parageneses. Rather, it is necessary to assess both a magmatic and hydrothermal origin for all amphibole grains in order to establish appropriate criteria for a particular sample suite. The rare earth element (REE) content of ∼75% of our amphibole grains may be accounted for by crystallization from residual melts; some of these melts were enriched in the light rare earth elements by the crystallization of apatite and/or amphibole. Of significance, only a small subset of these grains crystallized at magmatic temperatures (>825°C). We conclude that the grains that equilibrated at lower temperatures were initially magmatic but that their major elements were reset during subsolidus, hydrothermal alteration, and deformation. This decoupling of the major and rare earth elements was most prevalent in the Hess Deep and MARK suites, both of which were tectonically exhumed at amphibolite to greenschist facies conditions. The remaining REE data identify hydrothermal amphibole that formed by mineral‐scale reactions involving clinopyroxene, fluids, and ± plagioclase at subsolidus conditions. Evaluation of fluids in equilibrium with amphibole shows that deep hydrothermal fluids are unlike those venting at the seafloor in terms of REE contents and/or patterns.

show abstract

“…Here, parental liquids refer to the composition of the melt which crystallized the minerals found within the mafic enclaves. Amphibole/melt partition coefficients are based on the expressions of Hilyard et al [2000] and plagioclase/ melt partition coefficients are based on the expressions of Dohman and Blundy [2014] together with the intensive parameters (P, T, H 2 O) calculated from hornblende chemistry and hornblende/plagioclase pairs as described above. Partition coefficients for pyroxene were derived from the experiments of Gallahan and Nielsen [1992], Nielsen et al [1992], and Blundy and Wood [2003].…”

Section: Determination Of Parental Liquidsmentioning

confidence: 99%

Interpretation of the provenance of small‐scale heterogeneity as documented in a single eruptive unit from Mt. Jefferson, Central Oregon Cascades

Üstünışık

Loewen

Nielsen

et al. 2016

Geochem Geophys Geosyst

Self Cite

View full text Add to dashboard Cite

Mt. Jefferson is a large composite volcano located in the central Oregon Cascades that has erupted a diverse compositional suite of lavas from basalt to rhyodacite (50–72 wt. % SiO2). Individual eruptive units contain multiple populations of plagioclase, and a variety of mafic textural/mineralogical components often preserved as large centimeter to millimeter‐sized enclaves. Understanding the processes active in any volcanic center requires that we document the products of those processes. In this contribution, we documented the small‐scale compositional diversity within a single eruptive unit at Mt. Jefferson, the Whitewater Creek andesite, in order to answer three questions: (1) what are the characteristics and scale of diversity in a single eruptive unit, (2) what is the provenance of the observed components, and (3) how does that observed small‐scale diversity relate to the larger‐scale diversity observed between other flows at Mt. Jefferson. Our analyses are based on major, trace element concentrations for phenocrysts, and melt inclusions from a single eruptive unit, the Whitewater Creek andesite which is one of the most heterogeneous units erupted at Mt. Jefferson. We have identified at least four distinct components present at the centimeter scale. These components, identified on the basis of their mineralogy and composition, include three mafic (two pyroxene + plagioclase; plagioclase‐hornblende, and olivine‐orthopyroxene) and one silicic component (dacitic groundmass). To understand the relationship between the observed textural components and the magma types erupted at Mt Jefferson, equilibrium liquid compositions were calculated from the phenocryst compositions. The range exhibited by those calculated liquids covers much of the entire range represented by the lavas at Mt. Jefferson. However, it is difficult to directly connect them to specific magma types observed at Mt. Jefferson. We attribute our inability to directly link the textural components to the known magma types to post mixing diffusive reequilibration during storage and transport. These results suggest that great care should be taken in interpretation of whole rock data.

show abstract

Experimental determination of the partitioning behavior of rare earth and high field strength elements between pargasitic amphibole and natural silicate melts

Cited by 59 publications

References 72 publications

Eocene volcanism during the incipient stage of Izu–Ogasawara Arc: Geology and petrology of the Mukojima Island Group, the Ogasawara Islands

Eocene volcanism during the incipient stage of Izu–Ogasawara Arc: Geology and petrology of the Mukojima Island Group, the Ogasawara Islands

Metasomatism of oceanic gabbros by late stage melts and hydrothermal fluids: Evidence from the rare earth element composition of amphiboles

Interpretation of the provenance of small‐scale heterogeneity as documented in a single eruptive unit from Mt. Jefferson, Central Oregon Cascades

Contact Info

Product

Resources

About