Systematics and energetics of trace-element partitioning between olivine and silicate melts: Implications for the nature of mineral/melt partitioning

Beattie, Paul

doi:10.1016/0009-2541(94)90121-x

Cited by 260 publications

(121 citation statements)

References 27 publications

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“…This behavior is expected based on the predicted behavior of Mn (D Mn ol/basalt = 0.5 to 1.07; Beattie, 1994). Figure 7 also illustrates that there can be substantial overlap in Mg#-MnO in shergottites with significantly different isotopic characteristics (compare Y-980459 to EETA79001 to NWA 1110/1068).…”

Section: Major and Minor Elements In Olivinementioning

confidence: 62%

Petrogenetic linkages among Martian basalts: Implications based on trace element chemistry of olivine

Shearer

Burger

Papike

et al. 2008

Meteorit & Planetary Scien

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Abstract-The shergottites exhibit a range of major and trace element compositions, crystallization ages, and initial Sr, Nd, Hf, and Pb isotopic compositions. To constrain the physical mechanisms by which shergottites obtain their compositional characteristics, we examined the major and trace element record preserved in olivine in the more primitive shergottites. Based on such characteristics as the Mg#, V zoning, calculated D Ni,Co , the olivine in Y-980459 are most likely phenocrysts. Many of these same characteristics indicate that the olivines in other shergottites are not in equilibrium with the adjacent melt. However, in most cases they are not xenocrystic, but additions of olivine from the same basaltic system. Elephant Moraine (EET) A79001 may be an exception with the olivine data suggesting that it is xenocrystic. In this case, the olivine crystallized from a reduced and LREEdepleted melt and was incorporated into an oxidized and enriched basalt. Vanadium and CaO in olivine appear to record the appearance of spinel and pyroxene on the liquidus of most of the shergottites. Most of the olivine shergottites represent basalts produced by melting of reduced (IW to IW + 1), depleted mantle sources. Olivine data indicate that many of the primary melts derived from this source had similar Ni, Co, and Mn. Shergottites such as Northwest Africa (NWA) 1110/1068 and perhaps Roberts Massif (RBT) 04261 that appear to be derived from more enriched sources have distinctly different olivine. In the case of NWA 1110/1068, the olivine data suggests that the enriched component was added to system prior to olivine crystallization.

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Section: Major and Minor Elements In Olivinementioning

confidence: 62%

Petrogenetic linkages among Martian basalts: Implications based on trace element chemistry of olivine

Shearer

Burger

Papike

et al. 2008

Meteorit & Planetary Scien

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“…Disruption led to a molten and outgassed IVA source body that contained metallic and silicate liquids stripped of an olivine-rich mantle. Kennedy et al (1993); (3) Jones and Layne (1997); (4) Ulmer (1989); (5) Ewart et al (1973); (6) This study, inferred from Cr-Al co-variation and assuming D Al = 0.043; (7) Mysen (1976); (8) Keleman and Dunn (1992); (9) Weill and McKay (1975); (10) Irving and Frey (1984); (11) Schwandt and McKay (1998); (12) Beattie (1994); (13) Leeman and Scheidegger (1976); (14) Dunn (1987); (15) Klock and Palme (1998); (16) McKay and Weill (1976Weill ( , 1977; (17) Ewart and Griffin (1994); (18) Bougalt and Hekinian (1974); (19) Dostal et al (1983); (20) Duke (1976); (21) Gaetani and Grove (1997); (22) Takahashi (1978); (23) Watson (1977); (24) Paster et al (1974); (25) Villemant et al (1981); (26) Hart and Davis (1978); (27) Beattie (1993); (28) Nielsen et al (1992); (29) Larsen (1979)…”

Section: Discussionmentioning

confidence: 99%

Differentiation and evolution of the IVA meteorite parent body: Clues from pyroxene geochemistry in the Steinbach stony-iron meteorite

Ruzicka

Hutson

2006

Meteoritics &Amp; Planetary Science

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Abstract-We analyzed the Steinbach IVA stony-iron meteorite using scanning electron microscopy (SEM), electron microprobe analysis (EMPA), laser ablation inductively-coupled-plasma mass spectroscopy (LA-ICP-MS), and modeling techniques. Different and sometimes adjacent low-Ca pyroxene grains have distinct compositions and evidently crystallized at different stages in a chemically evolving system prior to the solidification of metal and troilite. Early crystallizing pyroxene shows evidence for disequilibrium and formation under conditions of rapid cooling, producing clinobronzite and type 1 pyroxene rich in troilite and other inclusions. Subsequently, type 2 pyroxene crystallized over an extensive fractionation interval. Steinbach probably formed as a cumulate produced by extensive crystal fractionation (~60-70% fractional crystallization) from a high-temperature (~1450-1490 °C) silicate-metallic magma. The inferred composition of the precursor magma is best modeled as having formed by ≥30-50% silicate partial melting of a chondritic protolith. If this protolith was similar to an LL chondrite (as implied by O-isotopic data), then olivine must have separated from the partial melt, and a substantial amount (~53-56%) of FeO must have been reduced in the silicate magma. A model of simultaneous endogenic heating and collisional disruption appears best able to explain the data for Steinbach and other IVA meteorites. Impact disruption occurred while the parent body was substantially molten, causing liquids to separate from solids and oxygen-bearing gas to vent to space, leading to a molten metal-rich body that was smaller than the original parent body and that solidified from the outside in. This model can simultaneously explain the characteristics of both stony-iron and iron IVA meteorites, including the apparent correlation between metal composition and metallographic cooling rate observed for metal.

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“…Trace element disequilibrium between primitive melt inclusions (mean La/Yb = 2.07) and high-Mg# clinopyroxenes (mean La/Yb melt = 2.22) on the one hand, and evolved melt inclusions, low-Mg# clinopyroxenes and the matrix glass on the other (mean La/Yb melt = 3.55) indicates that most primitive macrocrysts cannot be related to the matrix glass by a single liquid line of descent. Fractional crystallisation paths calculated for representative incompatible trace element-depleted and enriched primitive melt inclusions using Petrolog (Danyushevsky and Plechov 2011) with appropriate partition coefficients (Hart and Dunn 1993;Beattie 1994;Aigner-Torres et al 2007) demonstrate that, whilst the most enriched primitive melt inclusions could evolve to be in trace element equilibrium with the matrix glass, most inclusions would remain too depleted (Fig. 8).…”

Section: Crystal-melt Relationshipsmentioning

confidence: 99%

“…The 2σ error of La/Yb melt in equilibrium with clinopyroxene macrocrysts was estimated by calculating equilibrium melts for multiple analyses within an individual macrocryst zone. Dashed black lines show fractional crystallisation paths from typical primitive incompatible trace element-depleted and trace element-enriched melt inclusion compositions calculated using Petrolog (Danyushevsky and Plechov 2011) and appropriate partition coefficients (Hart and Dunn 1993;Beattie 1994;Aigner-Torres et al 2007). Calculations were performed at a pressure of 3 kbar with fO 2 buffered at QFM-1 21 Page 14 of 23…”

Section: Figmentioning

confidence: 99%

The evolution and storage of primitive melts in the Eastern Volcanic Zone of Iceland: the 10 ka Grímsvötn tephra series (i.e. the Saksunarvatn ash)

Neave

Maclennan

Thordarson

et al. 2015

Contrib Mineral Petrol

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evolved assemblage is close to being in equilibrium with the matrix glass, trace element disequilibrium between primitive and evolved assemblages indicates that they were derived from different distributions of mantle melt compositions. Juxtaposition of disequilibrium assemblages probably occurred during disaggregation of incompatible trace element-depleted mushes (mean La/Yb melt = 2.1) into aphyric and incompatible trace element-enriched liquids (La/Yb melt = 3.6) shortly before the growth of the evolved macrocryst assemblage. Post-entrapment modification of plagioclase-hosted melt inclusions has been minimal and high-Mg# inclusions record differentiation and mixing of compositionally variable mantle melts that are amongst the most primitive liquids known from the EVZ. Coupled highfield strength element (HFSE) depletion and incompatible trace element enrichment in a subset of primitive plagioclase-hosted melt inclusions can be accounted for by inclusion formation following plagioclase dissolution driven by interaction with plagioclase-undersaturated melts. Thermobarometric calculations indicate that final crystal-melt equilibration within the evolved assemblage occurred at ~1140 °C and 0.0-1.5 kbar. Considering the large volume of the erupted tephra and textural evidence for rapid crystallisation of the evolved assemblage, 0.0-1.5 kbar is considered unlikely to represent a pressure of long-term magma accumulation and storage. Multiple thermometers indicate that the primitive assemblage crystallised at high temperatures of 1240-1300 °C. Different barometers, however, return markedly different crystallisation depth estimates. Raw clinopyroxene-melt pressures of 5.5-7.5 kbar conflict with apparent melt inclusion entrapment pressures of 1.4 kbar. After applying a correction derived from published experimental data, clinopyroxene-melt equilibria return mid-crustal pressures of 4 ± 1.5 kbar, which are consistent with pressures estimated from the major element Abstract Major, trace and volatile elements were measured in a suite of primitive macrocrysts and melt inclusions from the thickest layer of the 10 ka Grímsvötn tephra series (i.e. Saksunarvatn ash) at Lake Hvítárvatn in central Iceland. In the absence of primitive tholeiitic eruptions (MgO > 7 wt%) within the Eastern Volcanic Zone (EVZ) of Iceland, these crystal and inclusion compositions provide an important insight into magmatic processes in this volcanically productive region. Matrix glass compositions show strong similarities with glass compositions from the AD 1783-1784 Laki eruption, confirming the affinity of the tephra series with the Grímsvötn volcanic system. content of primitive melt inclusions. Long-term storage of primitive magmas in the mid-crust implies that low CO 2 concentrations measured in primitive plagioclase-hosted inclusions (262-800 ppm) result from post-entrapment CO 2 loss during transport through the shallow crust. In order to reconstruct basaltic plumbing system geometries from petrological data with greater confidence, mineral-mel...

show abstract

Systematics and energetics of trace-element partitioning between olivine and silicate melts: Implications for the nature of mineral/melt partitioning

Cited by 260 publications

References 27 publications

Petrogenetic linkages among Martian basalts: Implications based on trace element chemistry of olivine

Petrogenetic linkages among Martian basalts: Implications based on trace element chemistry of olivine

Differentiation and evolution of the IVA meteorite parent body: Clues from pyroxene geochemistry in the Steinbach stony-iron meteorite

The evolution and storage of primitive melts in the Eastern Volcanic Zone of Iceland: the 10 ka Grímsvötn tephra series (i.e. the Saksunarvatn ash)

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