 | | Journal (article/letter/editorial) | | earth element abundances in volcanic rocks from Guam: implications for the evolution of the Mariana Arc...33199, USA 2 Earth Science Board, University of California at Santa Cruz, Santa Cruz, CA 95064, USA Abstract...Abstract. Volcanic rocks exposed on Guam were erupted during the Late Middle Eocene (Facpi Fm.), Late...element (REE) data for volcanic rocks from Guam Island. Guam is the southernmost island in the Mariana...erupted between 44 and 14 m.y.b.p. The oldest lavas on Guam are the oldest dated rocks in the Mariana arc system |  | | Report (issue) | | of Guam I GEOLOGICAL [SURREY PROFESSIONAL PAPER 403-C Petrology of the Volcanic Rocks of Guam By...VOLCANIC ROCKS OF GUAM By JOSHUA I. TRACEY, JR., and JOHN T. STARK GEOLOGY AND HYDROLOGY OF GUAM, MARIANA ISLANDS...of the basaltic and andesitic volcanic rocks of Guam and their relations to similar rocks of Saipan and...Petrogenes Trace elements in the volcanic rocks of Guam, by Joshua elen I. Tracey, Trace Jr., and John T... Average oxide composition of volcanic rocks of Guam by age__________________________________ _ Harker |  | | Report (issue) | | Limestones of Guam GEOLOGICAL SURVEY PROFESSIONAL PAPER 403-D Petrology of the Limestones of Guam By SEYMOUR...HATI-IAWAY and DOROTHY CARROLL GEOLOGY AND HYDROLOGY OF GUAM, MARIANA ISLANDS GEOLOGICAL SURVEY PROFESSIONAL...---------------------- Limestone formations of Guam ______________________ _ Limestone of Eocene (b)...the Alifan Limestone. Phosphatic limestone from Guam and from Anguar, Palau Islands. Limestone from the...from Kirkuk, Iraq. Insoluble residues from selected Guam Limestone. Page FIGURE 1. Columnar stratigraphic |  | | Report (volume) | | Yamamuro T, Nakamura T (1994) Dependence of bone-like apatite formation on structure of silica gel. Bioceramics...Nagashima Y, Tashiro M, Yamamuro T, Higashi S (1982) Apatite- and wollastonitecontaining glass-ceramics for...Res Kyoto Univ 60:260-268 Liu X, Ding C (2001) Apatite formed on the surface of plasma sprayed wollastonite...64:59-113 Sahai N (2003) The effects of Mg2+ and H+ on apatite nucleation at silica surfaces. Geochim Cosmochim...Cosmochim Acta 67:1017-1030 Sahai N (2005) Modeling apatite nucleation in the human body and in the geochemical |  | | Journal (article/letter/editorial) | | University of Arizona, Tucson, Arizona, 85721, USA Abstract. Low-K rhyolites and overlying 2-pyroxene...of Saipan is one of a group of islands (including Guam, Tinian, Rota and several smaller islets) that represent...it has been studied (Saipan: Cloud et al. 1956; Guam: Tracey et al. 1963; Reagan and Meijer in press;...with predominantly basalts and andesites exposed on Guam (Tracey et al. 1963; Reagan and Meijer in press)... cpx-core cpx-rim opx-core opx-rim oxide apatite plag. SO 3 52.77 0.00 28.53 n.a. 0.63 a 0.00 |  | | Journal (article/letter/editorial) | | front (FIG. 1); this high includes the islands of Guam, Rota, stood (e.g. Stern 2004). Exposed “naked forearcs...Japan E-mail: o-ishizuka@aist.go.jp 115–120 -2000 Guam -4000 Mariana forearc 6K1093 3 Department of...Trowbridge Hall University of Iowa, Iowa City IA 52242, USA PP. 0 Saipan 15˚ 2 IFREE, JAMSTEC, 2-15 Natsushima... and orthopyroxene, with accessory magnetite, apatite, and zircon. The gabbros encountered in the Mariana...transitional between boninite and tholeiitic arc lavas on Guam were dated at about 44 Ma (Meijer et al. 1983). |  | | Journal (article/letter/editorial) | | described issue). Neurodegenerative disorders such as Guam amyhere overlaps considerably with other areas of...biological to certain geographical locations such as Guam, West New research areas of genetics, molecular...specific topics. 1215 W Dayton St, Madison, WI 53706, USA E-mail: sahai@geology.wisc.edu ELEMENTS, VOL. 3...results (Glimcher 2006). In teeth, nanocrystals of apatite associated with collagen are found in the dentin...much larger (micron-sized) and better-organized apatite crystals (fewer substitutions, vacancies, and other |  | | Journal (article/letter/editorial) | | in the first part of the cruise between Tokyo and Guam and publish their results. A full geological compilation...Parece ~ Vela Basin ESE - Ridge Mariana Trough ~ | Guam (12°N) 1404 1403 1402 km L.. ~,:~:.-,~ ,, ~o...sedimentary records from the volcanic islands of Saipan, Guam and Palau, the volcanic activity started at least...amph, act, preh, serp serp, chl, amph, ?sulfate apatite, ?mont smect, hem cc, smect smect mont/chl mont/chl...albite, a m p h = amphiboles, anal = analcime, ap = apatite, biot = biotite, br-hbl = br-hornblende, cc = calcite |  | | Journal (article/letter/editorial) | | Tertiary basalts of island arc tholeiitic series in Guam by lower K: O and somewhat higher TiO: contents...and plagioclase. Persistent accessories include apatite, sphene, and ore minerals. Epidote and chlorite...Alkali Average Average oceanic basalt, tholeiite Guam [141 I151 872 49.34 1.49 17.04 1.99 6.82 0.17...abasement rocks of Yap 1.3 OTer~iury basalts of Guam 1.2 + O c e a n i c tholeiilic bosults I.I o...MgO for basement rocks of Yap, Tertiary basalts of Guam [14], and oceanic tholeiitic basalts [151. leiitic |  | | Journal (article/letter/editorial) | | corresponds to (Ca2 rsCet.soTho'zs)r's oO+l(OH)'2.5HrO (apatite type)' The mineral dissolves slowly in cold [(Sir...are orthoclase, vesuvianite, aegirine, sphene, apatite and prehnite. The name is for the locality. Drscussrox...264-265 196 Nature, from West Sarau'ak, Borneo. from Guam' Nalure, 196 (4851)' J. C. Harnawev aNo S. O ScrlaNcen...mm (Sarawak), 0.4 mm (Guam). X-ray powder data agree closely for Sarawak (S), Guam (G), and synthetic material...have been {ormed bv weathering of dacitic rock. In Guam it occurs in secondary solution cavities in limestone |  | | Journal (article/letter/editorial) | | microphenocrysts of chromite and Ni-Fe sulfide. Sphene and apatite are common accessories. Chromite of about 0.1 mm...green hornblende. Titanomagnetite, sphene, and apatite are common in the groundmass. Some larger augite...orthoclase, quartz, and brown hornblende. Accessory apatite and sphene are present. Rare chromite 0.1 0.2mm...A augite spessartite; H hornblende spessartite), Guam basalts (GT tholeiitic basalt; GC calc-alkalic basalt)...field of chromites from calc-alkalic basalts of Guam (Shiraki et al., 1977b) is outlined. Triangles: |  | Ishizuka, Osamu, Tani, Kenichiro, Reagan, Mark K., Kanayama, Kyoko, Umino, Susumu, Harigane, Yumiko, Sakamoto, Izumi, Miyajima, Yuki, Yuasa, Makoto, Dunkley, Daniel J. (2011) The timescales of subduction initiation and subsequent evolution of an oceanic island arc. Earth and Planetary Science Letters, 306 (3) 229-240 doi:10.1016/j.epsl.2011.04.006 | Journal (article/letter/editorial) | | Trowbridge Hall, University of Iowa, Iowa City, IA 52242, USA d Department of Earth Sciences, Kanazawa University... A forearc basalt from the Mariana forearc near Guam produced a similar 40Ar/39Ar age of 51.1 Ma. The...oceanic island arc extends from Honshu, Japan to Guam, and resulted from subduction of the Pacific Plate...volcanic front (Fig. 1A). This forearc high includes Guam, Rota, Tinian, and Saipan, where Eocene to Oligocene...explored the Mariana fore-arc to the southeast of Guam and investigated the volcanic stratigraphy of the |  | | Report (issue) | | show parallel extinction and are length slow. Apatite forms swarms of elongated acicular needles, commonly...groundmass consists of nepheline, magnetite, pyroxene, apatite, and biotite. The nepheline basalt on Tol is characterized...too poorly formed to be positively identified. Apatite occurs in small acicular needles embedded in other...entirely as small slender rods as much as 1 mm long. Apatite rods ranging from 0.1 to 0.5 mm long are fairly...amphibole are in small amounts of less than 1 percent. Apatite occurs as small acicular needles enclosed in other |  | Pabst, Sonja, Zack, Thomas, Savov, Ivan P., Ludwig, Thomas, Rost, Detlef, Tonarini, Sonia, Vicenzi, Edward P. (2012) The fate of subducted oceanic slabs in the shallow mantle: Insights from boron isotopes and light element composition of metasomatized blueschists from the Mariana forearc. Lithos, 132. 162-179 doi:10.1016/j.lithos.2011.11.010 | Journal (article/letter/editorial) | | Museum of Natural History, Washington D.C. 20560, USA b a r t i c l e i n f o Article history: Received...Institute, Smithsonian Institution, Suitland, MD 20746, USA. 0024-4937/$ – see front matter © 2011 Elsevier B...over ~ 2800 km from near Tokyo (Japan), to south of Guam (Mariana Islands) (Fig. 1). At IBM the Mesozoic...(mbsf) at 13°47′ N, 146°00′ E, ~ 125 km east of Guam Island and 85 km west of the trench (Figs. 1 and...National Museum of Natural History in Washington D.C., USA. ToF-SIMS is a surfacesensitive method that uses |  | | Report (issue) | | Soils from Guam GEOLOGICAL SURVEY PROFESSIONAL PAPER 403-F Mineralogy of Selected Soils from Guam By DOROTHY... By CARL H. STENSLAND GEOLOGY AND HYDROLOGY OF GUAM, MARIANA ISLANDS GEOLOGICAL SURVEY PROFESSIONAL...mineralogical study of selected soil samples of Guam, including data on chemical composition, grain-size...volcanic rocks _ _ _ _ Asan clay on volcanic rocks_____ Guam clay on limestones _______ Fossil red latosol_____________...limestones__________________________ Comparison of soils of Guam with those of similar parentage in other selected |  | | Report (issue) | | and dacites from Saipan and volcanic rocks from Guam, the Palau Islands, and the Bonin Islands______...and accessory magnetite, ilmenite, rutile, and apatite. Nine varieties of dacite and andesite are recognized...of volcanic rocks from Saipan, 1 of andesite from Guam, and 5 of basalt from the islands of Alamagan, Pagan... 128 GEOLOGY OF SAIPAN, MARIANA ISLANDS north of Guam. On the west the Marianas are bounded by the Philippine...rocks of a related nature on Saipan, Tinian, and Guam, or on the islands of Alamagan, Pagan, and Agrihan |  | | Journal (article/letter/editorial) | | muscovite, garnet, anatase,rutile, calcite,collophane,apatite, ilmenite, magnetite, chromite, zircon, tourmaline...the volumin- eral suitein the host limestone. Apatite, talc, chloous literature on Jamaicanbauxite. Identification... In addition to greatly from sampleto sample. Apatite appearsin the host limestone,this study concentratedon...carbonatematrix. dant oxide in the insolubleresiduesin which apatite Field and petrographicevidenceof contamination...JAMAICANBAUXITE 1257 CuKcz Radiation 2' per minute Apatite A 500 CPS 1.0 Time Const. 1000 CPS 2.0 Time |  | | Catalog/List | | ZIRCONOLITE Ca Zr TiO . Dark grey metallic areas in Apatite with Phlogopite Mica. (Possibly slightly radioactive)(Palabora...Carbide Mine, Wilson Springs Garland County, Arkansas USA) lxl £4 1x2 £7.50 497 TELLURITE Te 0/2 good yellow...metallic (Herbb £2 Mine, Powhatton County Virginia USA) lcm £6 314 PYRARGYRITE Ag/3 SbS/3 pure crystalline...+ Micros! Monument 1 Mine, Navajo County,Arizona,USA) lxl.£3.50 1x2 £7.00 118 CONICHALCITE green coating...on matrix. (Gold Hill Mine, Tooele County) Utah,.USA) lxl £2.50 1x2 £4 082 CUBANITE CuFeS metallic mass |  | | Journal (issue) | | Alaska SPECIAL ARTICLES THE GEOLOGY OF THE lsLAND OF GuAM By Lie1,t.-Coni1nander P. J. Searles THE R OMANTIC...AND ~IINERALS 1 THE GEOLOGY OF THE ISLAND OF GUAM By' P. J. SEARLES Lieutenant-Commander, U. S. Navy...~lass. In the first place where is and what is Guam? Guam is the southernn1ost of the 11:ariana I slands...subsidences, some of which were geologically very recent. Guam is of volcanic origin and is Fringed with coral...in the faces of the cliffs on the eastern side of Guam, 1na rking the position o f the former sea levels |  | | Journal (article/letter/editorial) | | collector friends in the U. S. A. I found one enormous apatite xl on these titanite dumps also a doubly terminated...terminated. Crystals of feldspar, hornblende, biotite, apatite and the titanite reach enormous size here and are...minerals that have no commercial value such as apatite, scapolite, titanite, hornblende and others, no...galena have been found at Boxbach, Nassau, Germany. GUAM — G. H. Haldén, 270 Lewis Ave., Millbrae, Calif...Mergagan Point, at the north end of the island of Guam. The specimen contains green, yellow and red bands |  | | Journal (article/letter/editorial) | | and pyroxene Magnetite Allanite Zircon Sphene Apatite Epidote Granite I.1 6 9 10 35 8600 / Diwite...of Japan. (4) The Guam Geological Survey has aided in collecting samples from Guam and has supphed additional...additional samples from Guam and other islands of the Marianas Group. (5) The geochemical group at California...granitic rocks do not give satisfactory results. Apatite and sphene give too great an age and therefore |  | | Catalog/List | | affordable $10.00 each. GUAM FOSSILIZED CRABS: Macrophthalmus latreillei, Apra Harbor, Guam: Miocene to Pleistocene...are remarkably well praserved. From a collector in Guam and again acquired in trade. These crabs range from...perky boxes. A "BEST BUY" at only $1.50 each. APATITE ON MUSCOVITE MICA: Jose Pinto Mine, Governador...Valadares, Minas Gerais, Brazil: Deep green terminated apatite crystals growing on thin plates of silver muscovite...mica. Very unusual and showy combinations and the apatite fluoresces a rust-orange color under UV light. |  | Elardo, Stephen M., Shearer, Charles K., Fagan, Amy L., Borg, Lars E., Gaffney, Amy M., Burger, Paul V., Neal, Clive R., Fernandes, Vera A., McCubbin, Francis M. (2014) The origin of young mare basalts inferred from lunar meteorites Northwest Africa 4734, 032, and LaPaz Icefield 02205. Meteoritics & Planetary Science, 49 (2) 261-291 doi:10.1111/maps.12239 | Journal (article/letter/editorial) | | University of New Mexico, Albuquerque, New Mexico 87131, USA 2 Department of Civil & Environmental Engineering...Dame, Indiana 46556, USA 3 Lunar & Planetary Institute, USRA, Houston, Texas 77058, USA 4 Chemical Sciences...National Laboratory, Livermore, California 94550, USA 5 Museum f€ ur Naturkunde- Berlin, Leibniz-Institut...composition. Their high Ti/Sm, low (La/Yb)N, and Cl-poor apatite compositions rule out the direct involvement of...2012) using the JEOL realtime chart recorder. Apatite analyses showing variable F count rates were discarded |  | | Report (issue) | | Marianas, and the personnel under his command on Guam and Saipan, made it possible for the field party...probably Guam, and some have even pinpointed his stopping place as Umatac Bay (southwest Guam). In fact...accounts are ambiguous, and Tinian, rather than Guam, may have been the site of Magellan's landing. Even...latitude and distance between islands seem to favor Guam, however, even though the point cannot be settled...1698 the entire remaining population was removed to Guam where it could be kept under close surveillance |  | Pujol-Solà, Núria, Proenza, Joaquín, Garcia-Casco, Antonio, González-Jiménez, José, Andreazini, Aleu, Melgarejo, Joan, Gervilla, Fernando (2018) An Alternative Scenario on the Origin of Ultra-High Pressure (UHP) and Super-Reduced (SuR) Minerals in Ophiolitic Chromitites: A Case Study from the Mercedita Deposit (Eastern Cuba). Minerals, 8 (10). 433pp. doi:10.3390/min8100433 | Journal (article/letter/editorial) | | zircon, quartz, K-feldspar, almandine, andalusite, apatite and kyanite [1–12]. The origin of minerals considered...the foliation and been described in nearby Cayo Guam chromite deposit (Moa‐Baracoa massif, Cuba [45])...chromitite bodies have been described in nearby Cayo Guam chromite deposit (Moa-Baracoa massif, Cuba [45])...Fe-Cr, Fe-Co) Alm garnet Andalusite Amphibole Apatite Biotite Corundum K-feldspar Kyanite Ilmenite Muscovite...inclusions (monazite, K-feldspar, quartz, biotite, apatite and occasional ilmenite) typical of any zircon |
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