Petrogenesis of slab-derived trondhjemite–tonalite-dacite/adakite magmas

Drummond, M. S.; Defant, M. J.; Kepezhinskas, Pavel

doi:10.1130/0-8137-2315-9.205

Cited by 125 publications

(201 citation statements)

References 63 publications

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“…In Fig. 7B, a number of the evolved calc-alkaline suite with more fractionated LREE plot close to or within the Piip-type HMA ®eld of Drummond et al (1996). Although only one of these samples is an andesite, they have fractionated LREE comparable to the more felsic members of the evolved calc-alkaline suite and consequently may be HMA that have undergone silica loss during alteration.…”

Section: Discussionmentioning

confidence: 99%

“…Representative patterns for back arc, arc and mid-ocean ridge basalts are also shown (E, F). N-MORB and E-MORB data from Sun and McDonough (1989), Lau Basin data from , East Lau Spreading Centre (ELSC) data from Ewart et al (1994), island arc and continental arc andesite± dacite±rhyolite (ADR) suites from Drummond et al (1996). Normalising values from McDonough and Sun (1995) overlap on plots of Ni, Cr and Co versus MgO (not shown).…”

Section: Discussionmentioning

confidence: 99%

“…1). Drummond et al (1996) distinguished two types of high-Al tonalite±trondhjemite±dacite (TTD) suites. Both are characterised by >15 wt% Al 2 O 3 at 70 wt% SiO 2 and have low Y, Yb and Sc with high Sr contents and Sr/Y, La/Yb n and Zr/Sm ratios.…”

Section: Discussionmentioning

confidence: 99%

“…The low and fractionated HREE are typical of rocks derived at depth from within the garnet stability zone, as suggested for Archean high-Al tonalite±trondhjemite± granodiorite (TTG) suites, and Cenozoic adakites (e.g. Martin 1986Martin , 1993Drummond et al 1996). Compared to the Type 3 rhyolites discussed below they have larger negative Nb anomalies, but smaller Eu and V troughs, and enrichment of Th relative to La (Fig.…”

Section: Rhyolitesmentioning

confidence: 99%

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An Archean arc basalt–Nb-enriched basalt–adakite association: the 2.7 Ga Confederation assemblage of the Birch–Uchi greenstone belt, Superior Province

Hollings

Kerrich

2000

Contrib Mineral Petrol

128

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The Uchi subprovince of the Archean Superior Province is a series of greenstone belts extending 600 km east±west along the southern margin of the North Caribou Terrane protocontinent. The 2.7 Ga Confederation tectonostratigraphic assemblage of the Birch±Uchi greenstone belt, northwest Ontario, is dominated by volcanic suites of ma®c, intermediate and felsic composition. Tholeiitic basalts range compositionally from Mg# 59±26 evolving continuously to greater REE contents (La 2±19 ppm; Th/La pm~1 ), with small negative Nb anomalies. Primitive tholeiites are similar to modern intraoceanic arc basalts, whereas evolved members extend to greater concentrations of Ti, Zr, V, Sc, and Y, and lower Ti/Zr, but higher Ti/Sc and Ti/V ratios characteristic of back arc basalts. Calc-alkaline basalts to dacites are characterised by more fractionated REE (La/Yb n 1±8), high Th/Nb pm ratios and deeper negative Nb anomalies; they plot with modern oceanic arc basalts and some may qualify as high magnesium andesites. The two suites are interpreted as a paired arc±back arc sequence. A third group of Nb-enriched basalts (NEB; Nb 9±18 ppm) extend to extremely high TiO 2 , Ta, P 2 O 5 , Sc and V contents, with strongly fractionated REE and ratios of Nb/Ta and Zr/Hf greater than primitive mantle values whereas Zr/ Sm ratios are lower. The most abundant rhyolitic suite has extremely enriched but¯at trace element patterns and is interpreted as strongly fractionated tholeiitic basalt liquids. A second group are compositionally similar to Cenozoic adakites and Archean high-Al, high-La/Yb n tonalites; they possess Yb £ 0.4 ppm, Y £ 6 ppm and Sc £ 8 ppm, with La/Yb n of 19±30 and Zr/Sm of 50±59. They are interpreted as melts of ocean lithosphere basaltic crust in a hot shallow subduction zone. Adakites are associated with NEB in Cenozoic arcs where there is shallow subduction of young and/or hot ocean lithosphere, often with oblique subduction. Slab melt adakites erupt, or metasomatise sub-arc mantle peridotite to generate an HFSE-enriched source that subsequently melts during induced mantle convection. The Archean adakite±NEB association erupted during development of the tholeiitic to calc-alkaline arc and its associated back arc. Their coexistence in the Confederation assemblage of the Birch±Uchi greenstone belt implies convergent margin processes similar to those in Cenozoic arcs.

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Section: Discussionmentioning

confidence: 99%

Section: Discussionmentioning

confidence: 99%

Section: Discussionmentioning

confidence: 99%

Section: Rhyolitesmentioning

confidence: 99%

See 2 more Smart Citations

An Archean arc basalt–Nb-enriched basalt–adakite association: the 2.7 Ga Confederation assemblage of the Birch–Uchi greenstone belt, Superior Province

Hollings

Kerrich

2000

Contrib Mineral Petrol

128

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“…The combined increase in Sr and decrease in Y concentrations with differentiation leads to high Sr/Y ratios (Fig. 16) in the trachyandesites that are similar to those in adakites (Drummond et al, 1996), but which we interpret to be the result of differentiation at high pressure.…”

Section: Pliocene Transitional Suitementioning

confidence: 81%

Description of the Geology of the Tecolotlan Graben, Jalisco, Mexico

Kowallis¹

2017

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Petrogenesis and Mo mineralization of a granitic complex, Da Hinggan Mountains, NE China: insights from zircon U-Pb dating, major and trace element geochemistry, and Sr-Nd-Pb isotopes

et al. 2015

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Abundant Cu and Mo deposits are spatially related to granitic complexes in the Nuomin area, eastern Da Hinggan Mountains, China. The petrogenesis of these deposits is investigated using data from zircon U–Pb dating, whole‐rock major and trace element geochemistry, and Sr–Nd–Pb isotopic compositions. The results show that the fine‐grained biotite monzogranite and medium‐grained biotite syenogranite formed in a Late Jurassic (155.7 ± 3.6 Ma) collision environment, characterized by fluid–melt interaction and plagioclase differentiation. These rocks belong to the high‐K calc‐alkaline, K‐peraluminous series, indicating that the parent magma evolved from the low‐temperature partial melting of lower crust, with geochemistry consistent with Neoproterozoic oceanic crust. The monzonitic diorite porphyrite, monzonite porphyry (with a crystallization age of 130.64 ± 0.74 Ma) and quartz monzonite porphyry belong to the high‐K calc‐alkaline, sodic, quasi‐aluminous series. The results indicate petrogenesis in a post‐collisional or late‐orogenic tectonic environment, characterized by interactions with CO2‐rich fluid and the fractional crystallization of amphibole, biotite and apatite. The parent magma formed from the partial melting of residual Neoproterozoic oceanic crust. The circulation of mineralized fluids was related to the petrogenesis of the monzonitic diorite porphyrite, monzonite porphyry and quartz monzonite porphyry. Copyright © 2015 John Wiley & Sons, Ltd.

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Petrogenesis of slab-derived trondhjemite–tonalite-dacite/adakite magmas

Cited by 125 publications

References 63 publications

An Archean arc basalt–Nb-enriched basalt–adakite association: the 2.7 Ga Confederation assemblage of the Birch–Uchi greenstone belt, Superior Province

An Archean arc basalt–Nb-enriched basalt–adakite association: the 2.7 Ga Confederation assemblage of the Birch–Uchi greenstone belt, Superior Province

Description of the Geology of the Tecolotlan Graben, Jalisco, Mexico

Petrogenesis and Mo mineralization of a granitic complex, Da Hinggan Mountains, NE China: insights from zircon U-Pb dating, major and trace element geochemistry, and Sr-Nd-Pb isotopes

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