 | Brueckner, Hannes K., Avé Lallemant, Hans G., Sisson, Virginia B., Harlow, George E., Hemming, Sidney R., Martens, Uwe, Tsujimori, Tatsuki, Sorensen, Sorena S. (2009) Metamorphic reworking of a high pressure–low temperature mélange along the Motagua fault, Guatemala: A record of Neocomian and Maastrichtian transpressional tectonics. Earth and Planetary Science Letters, 284 (1) 228-235 doi:10.1016/j.epsl.2009.04.032 | Journal (article/letter/editorial) | | pressure–low temperature mélange along the Motagua fault, Guatemala: A record of Neocomian and Maastrichtian...oblique collisional tectonics a b s t r a c t The Guatemala suture zone is a major east–west left-lateral...North American and Caribbean plates in Guatemala. The Motagua fault, the central active strand of the...within serpentinites both north and south of the Motagua fault. Lawsonite eclogites south of the fault are...that all serpentinite hosted eclogites along the Motagua fault formed at essentially the same time in different |  | | Journal (article/letter/editorial) | | that jadeitites and albitites from the Motagua Valley, Guatemala, are metasomatic rocks formed from a residual...blue jade consists mainly of jadeite, titanian omphacite and sodic amphibole, lavender jade consists mainly...green jadeite consists mainly of jadeite and omphacite. Yokoyama and Sameshima (1982) ®rst reported the...the coexistence of jadeite with omphacite. The reasons for the differences in colour of jadeitite were...1992) and albite-mica rocks from the Motagua Valley, Guatemala (Harlow, 1994) where the P/T conditions |  | | Journal (article/letter/editorial) | | albitites and related rocks from the Motagua Fault Zone, Guatemala G . E . HARLOW Department of Mineral...NY 10024-5192, USA ABSTRACT Jadeitites from Guatemala are found as weathered blocks in tectonized serpentinite...serpentinite in a 15-km zone north of the Motagua Fault Zone. Rock types found with jadeitite include...include albitites, albite-mica rocks, omphacite/taramitic amphibole-bearing metabasites, chlorite-actinolite...(paragonite and/or phengite f rarer phlogopite), omphacite, albite, titanite f zircon, apatite and graphite |  | García-Casco, Antonio, Rodríguez Vega, A., Cárdenas Párraga, J., Iturralde-Vinent, M. A., Lázaro, C., Blanco Quintero, I., Rojas Agramonte, Y., Kröner, A., Núñez Cambra, K., Millán, G., Torres-Roldán, R. L., Carrasquilla, S. (2009) A new jadeitite jade locality (Sierra del Convento, Cuba): first report and some petrological and archeological implications. Contributions to Mineralogy and Petrology, 158 (1) 1-16 doi:10.1007/s00410-008-0367-0 | Journal (article/letter/editorial) | | are varied and include combinations of jadeite, omphacite, albite, paragonite, analcime, clinozoisite-epidote...were richer in Mg–Ca, favouring the formation of omphacite and Mg–Ca rich jadeite in open voids and the replacement...replacement of earlier jadeite by fine-grained omphacite ? jadeite at 550–560°C. This new occurrence of...complexes, citing only 12 localities in Myanmar, Guatemala, Russia, Kazakhstan, Japan, California, Italian...Cretaceous high pressure complexes of central Guatemala (Motagua Valley region), where jadeitite is abundant and |  | | Journal (article/letter/editorial) | | with jadeite and significant solid solution with omphacite are observed. Minor Ur content is found in jadeitic...California and in jadeite and omphacite associatedwith jadeitites from Guatemala. The relatively uncommon...solid solution in pyroxene from jadeitites from Guatemala is also described.On the basis of these data,...Cu alloy X La Palmilla,Motagua Valley, Guatemala Rio La Palmilla,Guatemala Finca Pompeya,Guatemala:...ureyite(Ur":2 mol% ureyitein pyroxene);jd, jadeite;omp, omphacite;cm, chromite;ab, albite;wm, white mica; amp, alkali |  | | Journal (article/letter/editorial) | | ECLOGITESAND JADEITE FROM THE MOTAGUAFAULT ZONE, GUATEMALA ArBxaNrBn McBrnxnv, Center for Volcanology,IJniaersity...the Motagua fault zone. A boulder of remarkable size and purity was found near Manzanal, Guatemala, and...Elsewherein the Motagua fault zone, omphacite-garneteclogitesand glaucophane-lawsonite-omphacite-garnet rocks...of the same or higher grade as those in the Motagua Valley, it is only in the major fault zone that occurrencesof...detrital cobbles in the alluvial terraces of the Motagua River near the small town of Manzanal, Department |  | | Journal (article/letter/editorial) | | al., 2000; Hughes et al., 2000 Central Motagua Valley, Guatemala North side–El Progreso and Zacapa McBirney...antigorite schist, Estancia de La Virgen, Zacapa, Guatemala (AMNH MVJ87-6-2). Both images are 2.1 mm across...World jade, is centered on the middle Motagua Valley, Guatemala (Harlow, 1994; Seitz et al., 2001). There...near Jalapa, Guatemala are correlated with elevated Ti in grains and veins of omphacite (TiO2 ≤ 6 wt%)...clinopyroxene in jadeitites range from Jd100 to omphacite (nominally Jd50[Di+Hd]50 but as low as Jd 40 [Di+Hd] |  | TSUJIMORI, T, SISSON, V, LIOU, J, HARLOW, G, SORENSEN, S (2006) Very-low-temperature record of the subduction process: A review of worldwide lawsonite eclogites. Lithos, 92 (3) 609-624 doi:10.1016/j.lithos.2006.03.054 | Journal (article/letter/editorial) | | lawsonite-eclogite facies mineral assemblages (garnet + omphacite + lawsonite + rutile) typically occur in prograde-zoned...classified into two types: L-type, such as those from Guatemala and British Columbia, contain garnet porphyroblasts...“eclogite” for any metabasite in which garnet and omphacite are present as an equilibrium assemblage, regardless...summarized in Table 1. 2.1. Southern Motagua fault zone, Guatemala McBirney et al. (1967) first described...described eclogites from south of the Motagua fault zone (MFZ). The MFZ, a left-lateral strike-slip fault, |  | Shigeno, Miki, Mori, Yasushi, Shimada, Kazuhiko, Nishiyama, Tadao (2012) Origin of omphacitites from the Nishisonogi metamorphic rocks, western Kyushu, Japan: comparison with jadeitites. European Journal of Mineralogy, 24 (2) 247-262 doi:10.1127/0935-1221/2012/0024-2198 | Journal (article/letter/editorial) | | These omphacitites are principally composed of omphacite with minor amounts of winchite/magnesiohornblende...Omphacitites are rocks composed principally of omphacite, which differ lithologically from eclogites in...Similarly, the metagabbro blocks locally contain omphacite as a matrix mineral (Nishiyama et al., 1986; Nishiyama...Nishiyama, 1989, 1990), whereas neither omphacite nor jadeite occurs in the schists. Nishiyama et al...al. (1986) have reported chromian omphacite from omphacite-rich films in the metabasite. From the Tone |  | | Report (issue) | | Association: zeolites. Albite, quartz, muscovite, omphacite, glaucophane, calcite, aragonite, analcime, Distribution:...Co. At Manzanal, in the Motagua Valley, near the Sierra de las Minas, Guatemala. Name: From jade, a material |  | Cárdenas-Párraga, Juan, García-Casco, Antonio, Harlow, George E., Blanco-Quintero, Idael Francisco, Agramonte, Yamirka Rojas, Kröner, Alfred (2012) Hydrothermal origin and age of jadeitites from Sierra del Convento Mélange (Eastern Cuba) European Journal of Mineralogy, 24 (2) 313-331 doi:10.1127/0935-1221/2012/0024-2171 | Journal (article/letter/editorial) | | inclusions and omphacite exsolution in jadeite crystals, as well as replacement or infilling by omphacite. Minor...environment. Late-stage crystallizations include omphacite, albite and epidote from fluids nearly saturated...Maya block and Caribeana terrane, forming the Guatemala-Antillean orogenic belt (Garcı́a-Casco et al....the Caribbean realm (Fig. 1a). In the Motagua valley of Guatemala, this rock is present in two distinct...and Upper Cretaceous age juxtaposed across the Motagua fault (Harlow, 1994; Brueckner et al., 2009; Harlow |  | | Journal (article/letter/editorial) | | Evidence from jadeitite and related rocks from the Guatemala Suture Zone George E. Harlow, Kennet E. Flores...Evidence from jadeitite and related rocks from the Guatemala Suture Zone, LITHOS (2016), doi: 10.1016/j.lithos...Evidence from jadeitite and related rocks from the Guatemala Suture Zone Department of Earth and Planetary...analyses of jadeitites and related rocks from Guatemala compared with published data on comparable rocks...rocks from other sources. • In jadeitites from Guatemala, signatures of many trace elements resemble those |  | Maresch, Walter V., Grevel, Christiane, Stanek, Klaus Peter, Schertl, Hans-Peter, Carpenter, Michael A. (2012) Multiple growth mechanisms of jadeite in Cuban metabasite. European Journal of Mineralogy, 24 (2) 217-235 doi:10.1127/0935-1221/2012/0024-2179 | Journal (article/letter/editorial) | | jadeite, the latter with rims and patches of omphacite. TEM observations indicate extensive replacement...replacement of magmatic pyroxene by jadeite and omphacite along a broad front encroaching upon the augite...presumably plagioclase was formerly present. Omphacite dominates where augite is internally replaced...are replaced by jadeite together with lesser omphacite in epitactic relationship with the enclosing augite...pumpellyite is associated with the omphacite. (3) Jadeite þ omphacite þ pumpellyite þ chlorite with irregular |  | Simons, Kyla K., Harlow, George E., Brueckner, Hannes K., Goldstein, Steven L., Sorensen, Sorena S., Hemming, N. Gary, Langmuir, Charles H. (2010) Lithium isotopes in Guatemalan and Franciscan HP–LT rocks: Insights into the role of sediment-derived fluids during subduction. Geochimica et Cosmochimica Acta, 74 (12) 3621-3641 doi:10.1016/j.gca.2010.02.033 | Journal (article/letter/editorial) | | serpentinite mélange along the Motagua Fault (MF) in central Guatemala. Eclogite and jadeitite among these...blocks of eclogite, jadeitite and amphibolite from Guatemala and California, which provide constraints on the...to the deep mantle. 1.1. Tectonic Setting The Motagua fault (MF) is an active left-lateral strikeslip...fault among three parallel faults that define the Guatemala suture zone (GSZ). Serpentinite-matrix mélanges...Guatemala’s southern eclogites is composed mainly of Omphacite Lithium isotopes in Guatemalan and Franciscan |  | | Journal (article/letter/editorial) | | metabasite in which almandine-rich garnet and omphacite are present as an equilibrium assemblage, regardless...plagioclase-free rock composed of >75 vol% of omphacite + garnet (Desmons & Smulikowski, 2007). Throughout...transition, lawsonite coexists with glaucophane, omphacite and garnet (Fig. 2i). The preservation of pristine...Lws BS facies metadolerite, South Motagua Melange (SMM), Guatemala [PPL]. (d) Lws + Jd assemblage pseudomorphing...jadeite partially replace matrix eclogite facies omphacite (see Tsujimori et al., 2007) [X-ray (Ca) image] |  | Shi, Guang-Hai, Zhu, Xiang-Kun, Deng, Jun, Mao, Qian, Liu, Ying-Xin, Li, Guo-Wu (2011) Spherules with pure iron cores from Myanmar jadeitite: Type-I deep-sea spherules?. Geochimica et Cosmochimica Acta, 75 (6) 1608-1620 doi:10.1016/j.gca.2011.01.005 | Journal (article/letter/editorial) | | identified six amphiboles, terrestrial kosmochlor and omphacite of metasomatic origin (Harlow and Olds, 1987;...kosmochlor, Cr-bearing jadeite and some Cr-bearing omphacite commonly occur as corona aggregates or small blocks..., 2005b), similar to the observations of the Guatemala jadeitites (Harlow, 1994; Sorensen et al., 2006);...revealing evidence, the finding of Ba minerals in the Guatemala, 1618 G.-H. Shi et al. / Geochimica et Cosmochimica...(1967) Omphacite in Californian metamorphic rocks. Contrib. Mineral. Petrol. 15, 1–23. Fu B., Valley J. W |  | Mottana, Annibale, Murata, Takatoshi, Wu, Ziyu, Marcelli, Augusto, Paris, Eleonora (1997) The local structure of Ca-Na pyroxenes. I. XANES study at the Na K-edge. Physics and Chemistry of Minerals, 24 (7) 500-509 doi:10.1007/s002690050065 | Journal (article/letter/editorial) | | and M 21 eight-fold coordinated sites of the omphacite structure. A weak, sometimes poorly resolved peak...is intermediate between those of jadeite and omphacite. The Hedin-Lundqvist potential proves best for...local environments across the entire diopside-(omphacite)-jadeite join. Information about shortrange-order...discovered the primitive symmetry in the Tiburon omphacite (composition Di42Jd38Hd10Ae10 ) and solved its...symmetrical astride composition Di50Jd50 (“ideal” omphacite) and extending from Di65Jd35 to Di35Jd65 along |  | Flores, Kennet E., Skora, Susanne, Martin, Celine, Harlow, George E., Rodríguez, Dionisio, Baumgartner, Peter O. (2015) Metamorphic history of riebeckite- and aegirine-augite-bearing high-pressure–low-temperature blocks within the Siuna Serpentinite Mélange, northeastern Nicaragua. International Geology Review, 57 (5) 943-977 doi:10.1080/00206814.2015.1027747 | Journal (article/letter/editorial) | | Mexico (Talavera-Mendoza 2000), along the Motagua valley in Guatemala (Harlow et al. 2004; Ortega-Gutiérrez...subduction-related mélanges (e.g. North and South Motagua mélanges and Cordillera de la Costa belt; Harlow...and geologically complex region defined as the Guatemala suture zone (GSZ, Flores et al. 2013c). This large...mica-albite rock blocks from the North Motagua Mélange in Guatemala (Flores et al. 2013c). 4. Analytical...clinopyroxene (Ae52-21Quad58-30Jd3010; aegirine-augite to omphacite, Figure 7D), epidote/clinozoisite (Ep57-45Pmt3Czo54-42–1 |  | | Report (chapter) | | North American-Caribbean Plate boundary in Mexico-Guatemala-Honduras Lothar Ratschbacher, Leander Franz, Myo...American – Caribbean Plate boundary in Mexico – Guatemala –Honduras LOTHAR RATSCHBACHER1*, LEANDER FRANZ1...the North American –Caribbean Plate boundary in Guatemala and Honduras accommodated the large-scale sinistral...part of the Chortı́s Blocks, and the Polochic, Motagua and Jocotán–Chamelecón fault zones along the...Caribbean Plate boundary in southern Mexico, Guatemala and northern Honduras. The principal questions |  | Marroni, Michele, Pandolfi, Luca, Principi, Gianfranco, Malasoma, Alessandro, Meneghini, Francesca (2009) Deformation history of the eclogite- and jadeitite-bearing mélange from North Motagua Fault Zone, Guatemala: insights in the processes of a fossil subduction channel. Geological Journal, 44 (2) 167-190 doi:10.1002/gj.1145 | Journal (article/letter/editorial) | | jadeitite-bearing mélange from North Motagua Fault Zone, Guatemala: insights in the processes of a fossil...di Firenze, Italy In Guatemala, along the northern side of the Motagua Valley, a mélange consisting...subduction; exhumation; subduction channel; Motagua Fault Zone; Guatemala 1. INTRODUCTION Accretionary prisms...jadeititebearing mélange, from the North Motagua Fault Zone of Guatemala, is proposed, in order to provide useful...subduction mélange. 2. GEODYNAMIC SETTING OF THE GUATEMALA OPHIOLITES The high-pressure metaophiolites preserved |  | | Report (chapter) | | (2009). JADE MINES BELT of Central America (Guatemala and Mexico) (Walker 1991). In New Zealand the...carbon inclusions, while dark green or opaque omphacite is due to its composition i.e. Jd36.4–63.6 Ae4...magnesioriebeckite; Ms, muscovite; Ol, olivine; Omp, omphacite; Pg, paragonite; Ph, phengite; Qz, quartz; Rbk...‘impure jadeitite’ is jadeite + kosmochlor + omphacite + amphiboles + albite. Pure jadeitite is made...Kiénast 1986; Harlow & Olds 1987) (Fig. 13.3i). Omphacite is also an associated mineral in jadeitite, colourless |  | | Journal (article/letter/editorial) | | several major occurrences [in Burma (Myanmar), Guatemala, Japan, Kazakhstan, and the U.S.A.] show that...District, Burma (Myanmar); (2) central Motagua Valley, Guatemala; (3) Omi-gawa and Kotaki-gawa drainages...Smithsonian Fersman Museum AMNH AMNH Deposit Motagua Kotaki New Idria, CA Nansibon Presumed Jade Tract...Institute of Washington. Garnet standard UWG-2 (Valley et al. 1995) also was analyzed. The garnet yielded...green is seen in samples from Japan (112552-1), Guatemala (112538), Kazakhstan (102029, 104276), and Burma |  | | Journal (article/letter/editorial) | | District, Niigata Prefecture, Japan; and Motagua Valley of Guatemala. Careful field-work by Yoder & Chesterman...the San Andreas fault on the west and the Great Valley of California on the east. The sedimentary rocks...ucophane metagraywacke, 2 | miles N. 17° E. of Valley Ford, Sonoma County, California. Analysed material...5-5, He 0-5.) 7. Jadeite from glaucophane schist, Valley Ford, Sonoma County, California. Supplied by Dr... Jadeite from large pea-green coloured celt, Guatemala. (Jd 80-4, Ac 6-4, Di 11-7, He 1-5.) 13. Jadeite |  | Shi, Guanghai, Lei, Weiyan, He, Huaiyu, Ng, Yi Nok, Liu, Yan, Liu, Yingxin, Yuan, Ye, Kang, Zhijuan, Xie, Gen (2014) Superimposed tectono-metamorphic episodes of Jurassic and Eocene age in the jadeite uplift, Myanmar, as revealed by 40Ar/39Ar dating. Gondwana Research, 26 (2) 464-474 doi:10.1016/j.gr.2013.08.007 | Journal (article/letter/editorial) | | the Myitkyina–Mandalay ophiolite in the Myitkyina valley, north of Mandalay. Recently an eclogite boulder...of kosmochlor, Cr-bearing jadeite, Cr-bearing omphacite and jadeitized rodingite (Shi et al., 2005a; Yi...common occurrences of Ba and Sr minerals in the Guatemala, Japan and Myanmar jadeitites (Kobayashi et al...jadeitite deposits worldwide. For example, the Guatemala jadeitite occurs in serpentinite mélange in distinct...distinct settings on both sides of the Motagua fault, the current North American–Caribbean plate boundary |  | Escuder-Viruete, Javier, Andjić, Goran, Baumgartner-Mora, Claudia, Baumgartner, Peter O., Castillo-Carrión, Mercedes, Gabites, Janet (2019) Origin and geodynamic significance of the Siuna Serpentinite Mélange, Northeast Nicaragua: Insights from the large-scale structure, petrology and geochemistry of the ultramafic blocks. Lithos, 340. 1-19 doi:10.1016/j.lithos.2019.05.002 | Journal (article/letter/editorial) | | SC Stanek et al. 2009), along the Motagua valley in Guatemala (Harlow et al. 2004; Martens et al.,...region (Baja California, SW Mexico and southern Guatemala suture zone) to Upper Cretaceous to Paleogene...basement (DSDP Legs 67 and 84) of Nicaragua and Guatemala. Baumgartner et al. (2008) suggest that the MCOT...garnet- and clinopyroxene (aegirine-augite and rare omphacite)-rich domains, accompanied by ACCEPTED MANUSCRIPT...subduction complex is presently exposed at the Guatemala suture zone (Brueckner et al., 2009; Flores et |
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