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Journal Article

OCCURRENCE AND STABILITY RELATIONSHIPS OF ARAGONITE, HIGH-MAGNESIAN CALCITE, AND LOW-MAGNESIAN CALCITE UNDER DEEP-SEA CONDITIONS Available to Purchase

GERALD M FRIEDMAN
Journal: GSA Bulletin
Published: 01 October 1965
GSA Bulletin (1965) 76 (10): 1191–1196.
DOI: https://doi.org/10.1130/0016-7606(1965)76[1191:OASROA]2.0.CO;2
...GERALD M FRIEDMAN Abstract A relationship exists between the mineralogy and the environment of deposition of Recent carbonate sediments; deep-sea carbonate sediments contain abundant low-magnesian calcite, whereas shallow-water sediments are high in high-magnesian calcite and aragonite...
View PDF for article title, OCCURRENCE AND STABILITY RELATIONSHIPS OF ARAGONITE, <span class="search-highlight">HIGH</span>-<span class="search-highlight">MAGNESIAN</span> CALCITE, AND LOW-<span class="search-highlight">MAGNESIAN</span> CALCITE UNDER DEEP-SEA CONDITIONS
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Journal Article

Petrology of “Mt. Shasta” high-magnesian andesite (HMA): A product of multi-stage crustal assembly Available to Purchase

Martin J. Streck, William P. Leeman
Published: 01 February 2018
American Mineralogist (2018) 103 (2): 216–240.
DOI: https://doi.org/10.2138/am-2018-6151
.... 1999 ; Greene et al. 2006 ; Horodyskyj et al. 2009 ). We predict that such melts could be moderately water-rich (if formed at sufficiently high pressure, say in the deep crust), highly magnesian, and could mix with the intrusive magma to produce PBA-like liquids that, in turn, could be trapped...
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View PDF for article title, Petrology of “Mt. Shasta” <span class="search-highlight">high</span>-<span class="search-highlight">magnesian</span> andesite (HMA): A product of multi-stage crustal assembly
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Journal Article

High-magnesian andesite from Mount Shasta: A product of magma mixing and contamination, not a primitive mantle melt Available to Purchase

Martin J. Streck, William P. Leeman, John Chesley
Journal: Geology
Published: 01 April 2007
Geology (2007) 35 (4): 351–354.
DOI: https://doi.org/10.1130/G23286A.1
... generally recognized, and that their magnesian compositions do not necessarily imply that they are primitive mantle melts. 27 11 2006 11 08 2006 22 11 2006 Geological Society of America 2007 high-magnesian andesite primitive magnesian andesite Mount Shasta mixing adakite arc...
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Journal Article

High-magnesian andesite from Mount Shasta: A product of magma mixing and contamination, not a primitive melt: COMMENT AND REPLY: COMMENT Open Access

Jay Barr, Timothy L. Grove, Linda Elkins-Tanton
Journal: Geology
Published: 01 January 2007
Geology (2007) 35 (1): e147.
DOI: https://doi.org/10.1130/G24058C.1
..., Yb, Pb, and Zr. This illustrates the inability of the mixing models to produce the HMA with any third component, Trinity ophiolite or otherwise. Figure 1 Predicted isotopic composition of the Mt. Shasta high-magnesian andesite (HMA), using the mixing models of Streck et al. (2007) , are shown...
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View PDF for article title, <span class="search-highlight">High</span>-<span class="search-highlight">magnesian</span> andesite from Mount Shasta: A product of magma mixing and contamination, not a primitive melt: COMMENT AND REPLY: COMMENT
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Journal Article

High-magnesian andesite from Mount Shasta: A product of magma mixing and contamination, not a primitive melt: COMMENT AND REPLY: REPLY Open Access

Martin J. Streck, William P. Leeman, John T. Chesley
Journal: Geology
Published: 01 January 2007
Geology (2007) 35 (1): e148.
DOI: https://doi.org/10.1130/G24177Y.1
.... 37 , p . 530 – 552 , doi: 10.1007/BF02596890 . Barr J. Grove T.L. Elkins-Tanton L. 2007 , High-magnesian andesite from Mount Shasta: A product of magma mixing and contaminations, not a primitive melt: Comment : Geology , doi: 10.1130/G24058C.1 . Borg L.E. Brandon...
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Journal Article

High-magnesian andesite from Mount Shasta: A product of magma mixing and contamination, not a primitive melt: COMMENT AND REPLY: COMMENT Open Access

Peter B. Kelemen, Gene Yogodzinski
Journal: Geology
Published: 01 January 2007
Geology (2007) 35 (1): e149–e150.
DOI: https://doi.org/10.1130/G24099C.1
.... Chesley J. 2007 , High-magnesian andesite from Mount Shasta: A product of magma mixing and contamination, not a primitive mantle melt : Geology , v. 35 , p . 351 – 354 , doi: 10.1130/G23286A.1 . Yogodzinski G.M. Kelemen P.B. 1998 , Slab melting in the Aleutians: Implications...
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View PDF for article title, <span class="search-highlight">High</span>-<span class="search-highlight">magnesian</span> andesite from Mount Shasta: A product of magma mixing and contamination, not a primitive melt: COMMENT AND REPLY: COMMENT
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Journal Article

High-magnesian andesite from Mount Shasta: A product of magma mixing and contamination, not a primitive melt: COMMENT AND REPLY: REPLY Open Access

Martin J. Streck, William P. Leeman, John T. Chesley
Journal: Geology
Published: 01 January 2007
Geology (2007) 35 (1): e150.
DOI: https://doi.org/10.1130/G24356Y.1
.... 148 , p . 542 – 565 , doi: 10.1007/s00410-004-0619-6 . Kelemen P.B. Yogodzinski 2007 , High-magnesian andesite from Mount Shasta: A product of contamination, not primitive melt: Comment : Geology , doi: 10.1130/G24099C.1 . Kelemen P.B. Hanghoj K. Greene A.R. 2003...
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Journal Article

Petrology Geochemistry of the Late Archaean Siliceous High-Magnesian Basalts (SHMB) from Kaklur, Southern Bastar Craton, Central India Available to Purchase

Rajesh K. Srivastava, R. K. Singh
Published: 01 June 1999
Jour. Geol. Soc. India (1999) 53 (6): 693–704.
DOI: https://doi.org/10.17491/jgsi/1999/530606
...Rajesh K. Srivastava; R. K. Singh Abstract Greenschist facies rnetabasalts showing relict spinifex texture, associated with the Late Archaean Bengpal Group, are well exposed in the Kaklur area, Bastar craton. They are classified as siliceous high-magnesian basalts (SHMB) on the basis of its...
View PDF for article title, Petrology Geochemistry of the Late Archaean Siliceous <span class="search-highlight">High</span>-<span class="search-highlight">Magnesian</span> Basalts (SHMB) from Kaklur, Southern Bastar Craton, Central India
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Journal Article

Tectonic implications of fore-arc magmatism and generation of high-magnesian andesites: Alexander Island, Antarctica Available to Purchase

J. J. McCARRON, J. L. SMELLIE
Published: 01 April 1998
Journal of the Geological Society (1998) 155 (2): 269–280.
DOI: https://doi.org/10.1144/gsjgs.155.2.0269
... representing high-magnesian andesites.Sr and Nd isotopic data indicate that the andesites range isotopically to more depleted mantle compositions than the associated basalts. The dacite/rhyolites can be related compositionally to the andesites by assimilation of typical Pacific rim accretionary material...
View PDF for article title, Tectonic implications of fore-arc magmatism and generation of <span class="search-highlight">high</span>-<span class="search-highlight">magnesian</span> andesites: Alexander Island, Antarctica
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Journal Article

Melting experiments on lherzolite KLB-1 under hydrous conditions and generation of high-magnesian andesitic melts Available to Purchase

Kei Hirose
Journal: Geology
Published: 01 January 1997
Geology (1997) 25 (1): 42–44.
DOI: https://doi.org/10.1130/0091-7613(1997)025<0042:MEOLKU>2.3.CO;2
... above 1100 °C have basaltic compositions. This suggests that high-magnesian andesites can be formed by direct partial melting of the hydrous upper mantle only at relatively low temperatures. These andesitic melts, together with those obtained at 1100 °C, contain more than 3 wt% H 2 O and have...
View PDF for article title, Melting experiments on lherzolite KLB-1 under hydrous conditions and generation of <span class="search-highlight">high</span>-<span class="search-highlight">magnesian</span> andesitic melts
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Journal Article

Recent high magnesian calcite/aragonite cementation of beach and submarine sediments from Denmark Available to Purchase

N. O. Jorgensen
Published: 01 December 1976
Journal of Sedimentary Research (1976) 46 (4): 940–951.
DOI: https://doi.org/10.1306/212F709A-2B24-11D7-8648000102C1865D
... to sediment bodies of accumulated shell material mixed with quartz sand and 2) cement of magnesian calcite associated with sediment bodies of almost pure quartz sand. Both types of cement are present at all localities studied. The magnesian calcite shows a variable magnesium content in the range of 10-25 wt...
View PDF for article title, Recent <span class="search-highlight">high</span> <span class="search-highlight">magnesian</span> calcite&#x2F;aragonite cementation of beach and submarine sediments from Denmark
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Journal Article

High P-T phase relation of magnesian (Mg 0.7 Fe 0.3 ) staurolite compositon in the system FeO-MgO-Al 2 O 3 -SiO 2 -H 2 O: Implications for prograde high-pressure history of ultrahigh-temperature metamorphic rocks Available to Purchase

Kei Sato, M. Santosh, Toshiaki Tsunogae
Published: 01 January 2010
American Mineralogist (2010) 95 (1): 177–184.
DOI: https://doi.org/10.2138/am.2010.3170
... 13 950 145 Au-Pd Spr, Crn, Hem, Melt 12 08 2009 16 12 2008 © 2010 American Mineralogist 2010 High P-T experiment magnesian staurolite ultrahigh-temperature (UHT) metamorphism Southern Indian Granulite Terrane Limpopo Belt (southern Africa) Moderate-Mg...
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View PDF for article title, <span class="search-highlight">High</span> P-T phase relation of <span class="search-highlight">magnesian</span> (Mg 0.7 Fe 0.3 ) staurolite compositon in the system FeO-MgO-Al 2 O 3 -SiO 2 -H 2 O: Implications for prograde <span class="search-highlight">high</span>-pressure history of ultrahigh-temperature metamorphic rocks
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Journal Article

Magnesian ilmenite; clue to high-Mg parental magma of the Insizwa Complex, Transkei Available to Purchase

R. Grant Cawthorn, David I. Groves, Trudi Marchant
Published: 01 November 1985
The Canadian Mineralogist (1985) 23 (4): 609–618.
View PDF for article title, <span class="search-highlight">Magnesian</span> ilmenite; clue to <span class="search-highlight">high</span>-Mg parental magma of the Insizwa Complex, Transkei
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Predicted isotopic composition of the Mt. Shasta high-magnesian andesite (HMA), using the mixing models of Streck et al. (2007), are shown as Model 1 and Model 2. Trinity ophiolite samples (including two that plot outside of the region shown—indicated by arrows) from Jacobsen et al. (1984) and Gruau et al. (1995). Dacite (83–58), HAOT (85–38), CAB (85–1a), and HMA (85–41b) samples are all from Grove et al. (2002). Mt. Lassen HMA (LC86–1009) is from Borg et al. (1997). CAB—calc-alkaline basalt; HAOT—high-alumina olivine tholeiite.

Predicted isotopic composition of the Mt. Shasta high-magnesian andesite (H... Open Access

Published: 01 January 2007
Figure 1 Predicted isotopic composition of the Mt. Shasta high-magnesian andesite (HMA), using the mixing models of Streck et al. (2007) , are shown as Model 1 and Model 2. Trinity ophiolite samples (including two that plot outside of the region shown—indicated by arrows) from Jacobsen et al
Image
Mt. Shasta lavas compared to Aleutian high-magnesian andesite (A-HMA) (data sources and legend as in Fig, 1 and Grove et al. [2002]). Double-headed arrow defines trend in Mt. Shasta dacites (62–64 wt% SiO2).

Mt. Shasta lavas compared to Aleutian high-magnesian andesite (A-HMA) (data... Open Access

Published: 01 January 2007
Figure 2 Mt. Shasta lavas compared to Aleutian high-magnesian andesite (A-HMA) (data sources and legend as in Fig, 1 and Grove et al. [2002]). Double-headed arrow defines trend in Mt. Shasta dacites (62–64 wt% SiO 2 ).
Image
Diagram fO2 – T (A) and Pl–Ol–Q (B) for high-magnesian (HMA), high-phosphorous (HPA), high-(HKA), medium-(MKA) and low-potassium (LKA) andesites as well as for andesites of the Aukan volcanic center (A). Figure A shows the positions of standard hematite–magnetite (HM) and quartz-fayalite-magnetite (QFM) buffers. Figure B shows the location of experimentally obtained cotectic for 1 atm, 8 kbar (“dry” system) and 5 kbar at 2 % H2O.

Diagram f O 2 – T ( A ) and Pl–Ol–Q ( B ) for high-magnesian (HMA), h... Available to Purchase

Published: 01 November 1996
Fig. 3. Diagram f O 2 – T ( A ) and Pl–Ol–Q ( B ) for high-magnesian (HMA), high-phosphorous (HPA), high-(HKA), medium-(MKA) and low-potassium (LKA) andesites as well as for andesites of the Aukan volcanic center ( A ). Figure A shows the positions of standard hematite–magnetite (HM
Image
—Scanning electron micrograph of cryptocrystalline high-magnesian calcite cement in grapestone.

—Scanning electron micrograph of cryptocrystalline high-magnesian calcite c... Available to Purchase

Published: 01 March 1973
Fig. 17. —Scanning electron micrograph of cryptocrystalline high-magnesian calcite cement in grapestone.
Journal Article

Generation of Carbonate Particles and Laminites in Algal Mats—Example from Sea-Marginal Hypersaline Pool, Gulf of Aqaba, Red Sea Available to Purchase

Gerald M. Friedman, Abraham J. Amiel, Moshe Braun, Donald S. Miller
Journal: AAPG Bulletin
Published: 01 March 1973
AAPG Bulletin (1973) 57 (3): 541–557.
DOI: https://doi.org/10.1306/819A4302-16C5-11D7-8645000102C1865D
...Fig. 17. —Scanning electron micrograph of cryptocrystalline high-magnesian calcite cement in grapestone. ...
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View PDF for article title, Generation of Carbonate Particles and Laminites in Algal Mats—Example from Sea-Marginal Hypersaline Pool, Gulf of Aqaba, Red Sea
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Journal Article

Skeletal mineralogy of Devonian stromatoporoids Available to Purchase

Patrick F. Rush, Henry S. Chafetz
Published: 01 May 1991
Journal of Sedimentary Research (1991) 61 (3): 364–369.
DOI: https://doi.org/10.1306/D4267712-2B26-11D7-8648000102C1865D
... originally composed of high-magnesian calcite. The delicate reticulate structure of pillars and growth laminations of the original stromatoporoid coenosteum is represented by a neomorphic fabric of microdolomite-rich zones of inclusions in low-magnesian calcite. In comparison, co-existing constituents...
View PDF for article title, Skeletal mineralogy of Devonian stromatoporoids
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Journal Article

Volcanic record of the arc-to-rift transition onshore of the Guaymas basin in the Santa Rosalía area, Gulf of California, Baja California Open Access

Cathy Busby, Alison Graettinger, Margarita López Martínez, Sarah Medynski, Tina Niemi, Claire Andrews, Emilie Bowman, Evelyn P. Gutierrez, Matthew Henry, Emma Lodes, Judith Ojeda, Jonathan Rice, Graham Andrews, Sarah Brown
Journal: Geosphere
Published: 26 May 2020
Geosphere (2020) 16 (4): 1012–1041.
DOI: https://doi.org/10.1130/GES02094.1
... of California (<12 Ma). In addition, a suite of postsubduction rocks (<12 Ma), referred to as “bajaites,” are enriched in light rare-earth and other incompatible elements (e.g., Ba and Sr). These are further subdivided into high-magnesian andesite (with 50%–58% SiO 2 and MgO >4%) and adakite (>56...
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View PDF for article title, Volcanic record of the arc-to-rift transition onshore of the Guaymas basin in the Santa Rosalía area, Gulf of California, Baja California
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