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adakitic composition

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Journal Article

Source Composition Controls the Petrogenesis of Jurassic-Cretaceous Adakitic Volcanic Rocks in the Central North China Craton Available to Purchase

Liang Zhou, Yuping Su, Jianping Zheng, Qiang Ma, Jian Wang, Xiahui Zhang, Xiao Bian
Published: 01 May 2021
The Journal of Geology (2021) 129 (3): 319–341.
DOI: https://doi.org/10.1086/715241
...Liang Zhou; Yuping Su; Jianping Zheng; Qiang Ma; Jian Wang; Xiahui Zhang; Xiao Bian Abstract Diverse origins have been proposed for continental adakites, with great emphasis on high-pressure melting of the lower crust. However, the source composition is usually ignored in interpreting...
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View PDF for article title, Source <span class="search-highlight">Composition</span> Controls the Petrogenesis of Jurassic-Cretaceous <span class="search-highlight">Adakitic</span> Volcanic Rocks in the Central North China Craton
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Whole-rock geochemical data and expected range of adakitic compositions, based on Defant and Drummond (1990), demarcated by lines. Literature sources are as in figure 6.

Whole-rock geochemical data and expected range of adakitic compositions, ba... Available to Purchase

Published: 01 January 2023
Figure 7.  Whole-rock geochemical data and expected range of adakitic compositions, based on Defant and Drummond ( 1990 ), demarcated by lines. Literature sources are as in figure 6 .
Image
Diagrams to characterize adakitic compositions, based on Defant and Drummond (1990). In (a), numerous samples with Y &gt;100 ppm from the Lake Fitri area (Shellnutt et al., 2018) are off-scale. In (b) one value from Shellnutt et al. (2018) is off-scale at YbN &gt;100.

Diagrams to characterize adakitic compositions, based on Defant and Drummon... Available to Purchase

Published: 01 June 2021
Figure 9. Diagrams to characterize adakitic compositions, based on Defant and Drummond ( 1990 ). In ( a ), numerous samples with Y >100 ppm from the Lake Fitri area ( Shellnutt et al., 2018 ) are off-scale. In ( b ) one value from Shellnutt et al. ( 2018 ) is off-scale at Yb N >100.
Journal Article

High-Mg adakites from Kadavu Island Group, Fiji, southwest Pacific: Evidence for the mantle origin of adakite parental melts Available to Purchase

Leonid V. Danyushevsky, Trevor J. Falloon, Anthony J. Crawford, Sofia A. Tetroeva, Roman L. Leslie, Alicia Verbeeten
Journal: Geology
Published: 01 June 2008
Geology (2008) 36 (6): 499–502.
DOI: https://doi.org/10.1130/G24349A.1
...Leonid V. Danyushevsky; Trevor J. Falloon; Anthony J. Crawford; Sofia A. Tetroeva; Roman L. Leslie; Alicia Verbeeten Abstract We report here the compositions of primitive high-Mg adakite lavas from the Kadavu Island Group, Fiji. Two distinctive high-Mg adakite compositions are present on Kadavu...
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View PDF for article title, High-Mg <span class="search-highlight">adakites</span> from Kadavu Island Group, Fiji, southwest Pacific: Evidence for the mantle origin of <span class="search-highlight">adakite</span> parental melts
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Journal Article

Petrogenesis of Sr-rich adakitic rocks at volcanic arcs: insights from global variations of eruptive style with plate convergence rates and surface heat flux Available to Purchase

Georg F. Zellmer
Published: 01 July 2009
Journal of the Geological Society (2009) 166 (4): 725–734.
DOI: https://doi.org/10.1144/0016-76492008-0721
... suggests that these melts are linked to discontinuities in the subducting slab, which would facilitate upwelling of hot sub-slab asthenospheric mantle. It is demonstrated that excess heat flux arcs are sites where Sr-rich adakitic compositions are generated, and that the arc proportion erupting Sr-rich...
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View PDF for article title, Petrogenesis of Sr-rich <span class="search-highlight">adakitic</span> rocks at volcanic arcs: insights from global variations of eruptive style with plate convergence rates and surface heat flux
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(A) The Sabzevar granitoids plotted in discrimination diagrams for granitic rocks (Pearce et al., 1984) showing the fields of ocean ridge, volcanic arc (VA), syncollisional (syn-col), and within-plate (WP) granitic rocks. Gray fields correspond to Cenozoic adakite compositions (references as in Fig. 6). (B) The Sabzevar granitoids plotted in (Sr/Y) vs. Y (left) and (La/Yb)N vs. YbN (right) diagrams with adakite and calc-alkaline arcs fields as defined by Defant and Drummond (1990). Gray fields correspond to Cenozoic adakite compositions (references as in Fig. 6).

(A) The Sabzevar granitoids plotted in discrimination diagrams for granitic... Available to Purchase

Published: 01 March 2014
Figure 9. (A) The Sabzevar granitoids plotted in discrimination diagrams for granitic rocks ( Pearce et al., 1984 ) showing the fields of ocean ridge, volcanic arc (VA), syncollisional (syn-col), and within-plate (WP) granitic rocks. Gray fields correspond to Cenozoic adakite compositions
Journal Article

Eocene Andesitic Adakite from Lone Mountain, Southwestern Montana Available to Purchase

Francis Ö. Dudás, Nilanjan Chatterjee, Michael Krol
Published: 01 January 2023
The Journal of Geology (2023) 131 (1): 75–95.
DOI: https://doi.org/10.1086/726207
...Figure 7.  Whole-rock geochemical data and expected range of adakitic compositions, based on Defant and Drummond ( 1990 ), demarcated by lines. Literature sources are as in figure 6 . ...
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View PDF for article title, Eocene Andesitic <span class="search-highlight">Adakite</span> from Lone Mountain, Southwestern Montana
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Journal Article

Magmatic history and evolution of the Central American Land Bridge in Panama since Cretaceous times Available to Purchase

Wencke Wegner, Gerhard Wörner, Russell S. Harmon, Brian R. Jicha
Journal: GSA Bulletin
Published: 01 March 2011
GSA Bulletin (2011) 123 (3-4): 703–724.
DOI: https://doi.org/10.1130/B30109.1
... basin region (Chagres-Bayano arc) from 68 to 40 Ma. A third phase formed discrete volcanic centers across the Cordillera de Panama (Cordilleran arc) from 19 to 5 Ma. The youngest phase consists of isolated volcanic centers of adakitic composition (Adakite suite) in the Cordillera de Panama...
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View PDF for article title, Magmatic history and evolution of the Central American Land Bridge in Panama since Cretaceous times
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Journal Article

The geochemistry of young volcanism throughout western Panama and southeastern Costa Rica: an overview Available to Purchase

M. J. DEFANT, T. E. JACKSON, M. S. DRUMMOND, J. Z. DE BOER, H. BELLON, M. D. FEIGENSON, R. C. MAURY, R. H. STEWART
Published: 01 August 1992
Journal of the Geological Society (1992) 149 (4): 569–579.
DOI: https://doi.org/10.1144/gsjgs.149.4.0569
..., but there is no obvious genetic link between them through differentiation. High-Nb basalts may also be derived from the partial melting of the subducted oceanic crust. High-Nb basalt migmatites have been found with pegmatites of adakite compositions in the exposed subduction terrain of the Catalina Schist, California...
View PDF for article title, The geochemistry of young volcanism throughout western Panama and southeastern Costa Rica: an overview
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Journal Article

Initiation of subduction and the generation of slab melts in western and eastern Mindanao, Philippines Available to Purchase

Fernando G. Sajona, René C. Maury, Hervé Bellon, Joseph Cotten, Marc J. Defant, Manuel Pubellier
Journal: Geology
Published: 01 November 1993
Geology (1993) 21 (11): 1007–1010.
DOI: https://doi.org/10.1130/0091-7613(1993)021<1007:IOSATG>2.3.CO;2
... subducting beneath Zamboanga. Associated Nb-enriched basalts are thought to come from mantle metasomatized through interaction with adakitic melts. In eastern Mindanao, Pliocene-Quaternary cones and plugs of typical adakitic composition mark the trace of the Philippine fault in Surigao and north Davao...
View PDF for article title, Initiation of subduction and the generation of slab melts in western and eastern Mindanao, Philippines
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Journal Article

Lower crustal H 2 O controls on the formation of adakitic melts Available to Purchase

G.F. Zellmer, Y. Iizuka, M. Miyoshi, Y. Tamura, Y. Tatsumi
Journal: Geology
Published: 01 June 2012
Geology (2012) 40 (6): 487–490.
DOI: https://doi.org/10.1130/G32912.1
... and plagioclase hygrometry of mafic eruptives from southwest Japan to demonstrate that the adakitic compositions of associated intermediate magmas are of lower crustal origin due to a decrease in the water content of parental melts, and are not generated by partial melting of the eclogitic subducting slab...
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View PDF for article title, Lower crustal H 2 O controls on the formation of <span class="search-highlight">adakitic</span> melts
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Comparative geochemical plots for various granite suites described here from across the Trans-Australian Orogen illustrating a recurring pattern from low- to high-K combined with lower to higher Sr/Y, more adakitic compositions over time within any one granite batholith. Dotted lines indicate compositional fields of adakitic versus volcanic arc-related granitic rocks and are taken from the literature (Moyen, 2009). CAT—calc-alkaline-trondhjemite; SS—Supersuite.

Comparative geochemical plots for various granite suites described here fro... Open Access

Published: 07 August 2024
Figure 5. Comparative geochemical plots for various granite suites described here from across the Trans-Australian Orogen illustrating a recurring pattern from low- to high-K combined with lower to higher Sr/Y, more adakitic compositions over time within any one granite batholith. Dotted lines
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Figure 2. MgO vs. SiO2 (A) and Sr vs. (Na2O + CaO) (B) diagrams comparing composition of tonalite-trondhjemite-granodiorite (TTG) at different times (t, gray fields) with modern adakites (fields with white dotted lines) and melts produced by experimental basalt melting (hatched area). (C): Sr vs. (Na2O + CaO) plot showing compositions of experimental melts obtained with (filled circles) or without (open circles) residual plagioclase (Plg), compared with TTG and adakite compositions (gray field)

Figure 2. MgO vs. SiO 2 (A) and Sr vs. (Na 2 O + CaO) (B) diagrams compar... Available to Purchase

Published: 01 April 2002
Figure 2. MgO vs. SiO 2 (A) and Sr vs. (Na 2 O + CaO) (B) diagrams comparing composition of tonalite-trondhjemite-granodiorite (TTG) at different times ( t , gray fields) with modern adakites (fields with white dotted lines) and melts produced by experimental basalt melting (hatched area
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Surface heat flux excess is derived by taking the horizontal distance between an arc and the correlation line from Figure 3. In excess heat flux arcs, heat flux excess correlates with the proportion of each arc segment in which Sr-rich adakitic compositions are erupted. See the appendix for details on the calculation of adakitic arc proportions.

Surface heat flux excess is derived by taking the horizontal distance betwe... Available to Purchase

Published: 01 July 2009
Fig. 5. Surface heat flux excess is derived by taking the horizontal distance between an arc and the correlation line from Figure 3 . In excess heat flux arcs, heat flux excess correlates with the proportion of each arc segment in which Sr-rich adakitic compositions are erupted. See the appendix
Journal Article

The tectonomagmatic evolution of structure-lithologic complexes in the Tannu-Ola zone, Tuva, in the Late Vendian–Early Cambrian ( from geochemical , Nd isotope, and geochronological data ) Available to Purchase

A.A. Mongush, V.I. Lebedev, V.P. Kovach, E.B. Sal’nikova, E.K. Druzhkova, S.Z. Yakovleva, Yu.V. Plotkina, N.Yu. Zagornaya, A.V. Travin, P.A. Serov
Published: 01 May 2011
Russ. Geol. Geophys. (2011) 52 (5): 503–516.
DOI: https://doi.org/10.1016/j.rgg.2011.04.003
... Cambrian, the Tannu-Ola zone was an active continental margin, where basalts with island-arc characteristics, quartz microdiorites of adakite composition, basalts, dolerites, and quartz microdiorites of intraplate type, and diorite-tonalite-plagiogranite association of island-arc type formed. To explain...
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View PDF for article title, The tectonomagmatic evolution of structure-lithologic complexes in the Tannu-Ola zone, Tuva, in the Late Vendian–Early Cambrian ( from geochemical , Nd isotope, and geochronological data )
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(a) Chondrite-normalized REE patterns and (b) primitive-mantle-normalized incompatible-element spidergrams for the Wuzhishan Orthogneiss. The normalization values are from Sun and McDonough (1989). Average andesite and adakite compositions are from Hickey-Vargas et al. (1989) and Defant et al. (1992).

( a ) Chondrite-normalized REE patterns and ( b ) primitive-mantle-normaliz... Available to Purchase

Published: 01 May 2006
Figure 8. ( a ) Chondrite-normalized REE patterns and ( b ) primitive-mantle-normalized incompatible-element spidergrams for the Wuzhishan Orthogneiss. The normalization values are from Sun and McDonough ( 1989 ). Average andesite and adakite compositions are from Hickey-Vargas et al. ( 1989
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Geochemical data for volcanic rocks from the Andean Austral volcanic zone (data from Stern and Kilian, 1996). Plots show fields and limits for adakitic compositions in gray; arrows show fractionation trends defined by variations with increasing silica content. See text for discussion.

Geochemical data for volcanic rocks from the Andean Austral volcanic zone (... Available to Purchase

Published: 01 June 2007
F ig . 7. Geochemical data for volcanic rocks from the Andean Austral volcanic zone (data from Stern and Kilian, 1996 ). Plots show fields and limits for adakitic compositions in gray; arrows show fractionation trends defined by variations with increasing silica content. See text for discussion.
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Geochemical data for intrusive rocks associated with the Tampakan porphyry copper deposit, Mindanao, Philippines (data from Rohrlach, 2002). Plots show fields and limits for adakitic compositions in gray; arrows show fractionation trends defined by variations with increasing silica content. See text for discussion.

Geochemical data for intrusive rocks associated with the Tampakan porphyry ... Available to Purchase

Published: 01 June 2007
F ig . 16. Geochemical data for intrusive rocks associated with the Tampakan porphyry copper deposit, Mindanao, Philippines (data from Rohrlach, 2002 ). Plots show fields and limits for adakitic compositions in gray; arrows show fractionation trends defined by variations with increasing silica
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Geochemical data for Paleocene granitoids from the Mezcala district, Mexico (data from González-Partida et al., 2003). Plots show fields and limits for adakitic compositions in gray; arrows show fractionation trends defined by variations with increasing silica content. See text for discussion.

Geochemical data for Paleocene granitoids from the Mezcala district, Mexico... Available to Purchase

Published: 01 June 2007
F ig . 18. Geochemical data for Paleocene granitoids from the Mezcala district, Mexico (data from González-Partida et al., 2003 ). Plots show fields and limits for adakitic compositions in gray; arrows show fractionation trends defined by variations with increasing silica content. See text
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Sr/Y ratios v. Y concentration of global volcanic arcs. The analysis is restricted to samples with ≥56 wt% SiO2 (see Defant &amp; Drummond 1990). (a) Adakitic and ADR (andesites, dacites, rhyolites) compositional fields of Castillo (2006). Fractional crystallization and partial melting trends are shown in grey and black, respectively, based on published partition coefficients for garnet (Johnson 1994), clinopyroxene (Ewart &amp; Griffin 1994) and amphibole (Sisson 1994), using the average primitive oceanic arc basalt of Kelemen et al. (2004) as source composition. (b–i) Compositions of samples were taken from the GEOROC web site (http://georoc.mpch-mainz.gwdg.de/). Sr-rich adakitic rocks plot within the shaded fields, compared with the dashed fields of adakitic compositions of Castillo (2006). The black curve is labelled for a Sr content of typically 700 ppm, adjusted in (e) and (f) to cap the most evolved ADR samples. In (b)–(h), samples that could not be identified as collected from sites proximal to or within the Holocene neovolcanic arc were excluded, as well as data reported in pre-1970 studies. Arcs displayed in (b)–(f) are excess heat flux arcs as seen in Figure 3; those without excess heat flux are given in (g)–(i).

Sr/Y ratios v. Y concentration of global volcanic arcs. The analysis is res... Available to Purchase

Published: 01 July 2009
Fig. 4. Sr/Y ratios v. Y concentration of global volcanic arcs. The analysis is restricted to samples with ≥56 wt% SiO 2 (see Defant & Drummond 1990 ). ( a ) Adakitic and ADR (andesites, dacites, rhyolites) compositional fields of Castillo (2006 ). Fractional crystallization and partial