 | | 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 |  | | Journal (article/letter/editorial) | | Tertiary basalts of island arc tholeiitic series in Guam by lower K: O and somewhat higher TiO: contents...accessory. The principal ore mineral is usually ilmenite. In a sample Y-206-2 from the easternmost outcrop...andesine (An2s An43). Ore mineral is predominantly ilmenite, associated frequently with sphene. Meta-porphyrite:...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 |  | | 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 (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) | | and dacites from Saipan and volcanic rocks from Guam, the Palau Islands, and the Bonin Islands______...cristobalite, anorthoclase, and accessory magnetite, ilmenite, rutile, and apatite. Nine varieties of dacite...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 (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 |  | | Report (issue) | | It is similar to ilmenite and to the isomorphous mixture of hematite and ilmenite described by Kuno...grains are commonly enclosed in the nepheline. Ilmenite occurs as small irregular grains in the groundmass...areas of ilmenite occur interstitially in discrete flakes. They are similar to the ilmenite in the olivine... Small irregular opaque areas of interstitial ilmenite occur in the groundmass of many of the andesites...andesites and appear similar in every way to the ilmenite of the basalts. TRACHYTE The trachyte forms only |  | | Journal (article/letter/editorial) | | pigeonites and rare subcalcic ferroaugites. Ferrian ilmenite was identified in only three samples by microprobe...magnetite, plagioclase + augite + hypersthene + ilmenite; (2) dacites and rhyodacites: plagioclase + ferriferous...pigeonite + subcalcic ferroaugite + magnetite + ilmenite, plagioclase + augite + intermediate pigeonite...clusters with plagioclase and augite. Only three ilmenite grains were identified by microprobe. Substitutions...lavas such as Manam Island (Johnson et al., 1985), Guam (Reagan & Meijer, 1984), and Okmok Volcano (Nye |  | | Journal (article/letter/editorial) | | was sent by air express on the last plane out of Guam before the Japs moved in. Then there are some pure...crystals of zircon from Lincoln, Calif., some ilmenite sand from the East Coast of Sumatra and the West |  | 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 |  | | Journal (article/letter/editorial) | | Ridge basalt (Sigurdsson and Schilling, 1976), 2. Guam calc-alkali basalt (Shiraki et al., 1977), 3. Snake...Snake River Plain basalt (Thompson, 1973), 4. Guam tholeiite (Shiraki et al., 1977), 5. boninite (Kuroda... Leg Res., of example . Shiraki, olivine Guam, San-in 8-13. C. E., Prinz, M., Dowty, Spinel-group...minerals Rake and and Samples. Keil, K. ilmenite Am. Mineral., (1963 a) Chokai volcano, |  | | Journal (article/letter/editorial) | | evolution of the magma during crystallization; ilmenite does not exhibit major-element compositional zoning...fragment); 60003,246 (fragment similar to Apollo 12 Ilmenite basalts); 60003,248 (high-Al/ low-Ti basalt fragment);...approximately 50% pyroxene, 35% plagioclase, 5–10% ilmenite, 5–10% olivine, and accessory chromite-ulvöspinel...(250–650 lm in length) and laths (200–450 lm). Ilmenite crystals (150 to 1 mm) are generally lath-like...plagioclase + Al-chromite + olivine ? Cr-ulvöspinel ? ilmenite ? pyroxene, which is consistent with the whole-rock |  | | Journal (article/letter/editorial) | | was sent by air express on the last plane out of Guam before the Japs moved in. Then there are some pure...crystals of zircon from Lincoln, Calif., some ilmenite sand from the East Coast of Sumatra and the West |  | | 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...epidote, h e m = hematite, heul = heulandite, ilm = ilmenite, m g t = magnetite (partly Ti = magnetite), m...investigated [16]: the more central part southeast of Guam (stations 1402-1404) and the western end at the |  | | 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 |  | Proenza, J., Gervilla, F., Melgarejo, J., Vera, O., Alfonso, P., Fallick, A. (2001) Genesis of sulfide-rich chromite ores by the interaction between chromitite and pegmatitic olivine–norite dikes in the Potosí Mine (Moa-Baracoa ophiolitic massif, eastern Cuba) Mineralium Deposita, 36 (7) 658-669 doi:10.1007/s001260100193 | Journal (article/letter/editorial) | | harzburgite, as described by Guild (1947) in the Cayo Guam deposit of the Moa-Baracoa massif. The intrusion...100´15 lm) attached to the grain boundaries of ilmenite. Analytical methods Polished and thin sections...polarized transmitted light, width of photo 7 mm. b Ilmenite (Ilm) inclusions in chromite (Chr) grain from...abundant crystallographically oriented lamellae of ilmenite (following the {111} planes of the host chromite)...This texture suggests an exsolved relationship of ilmenite inclusions in chromite, and has been interpreted |  | | Journal (article/letter/editorial) | | College Station, Duke University, Durham, NC 27708, USA 2 Geological Research Division, A-0t5, Scripps Institution...Institution of Oceanography, La Jolla, CA 92093, USA Abstract. Boninite series volcanic rocks have been...Mendeleev dredge 1403. S indicates location of Saipan, G Guam 14 5~ dacite series ( B l o o m e r et al. 1979;...establish a normative definition based on quartz, ilmenite, and enstatite (Meijer 1980). It should be emphasized...of boninites with ORB-like rocks is southeast of Guam, in D28 and R/V Mendeleev site 1403 (Dietrich et |  | 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...Berkeley Geochronology Center, in Berkeley, CA, USA. Prior to analyses, two aliquots of NWA 4734 (3.42...meteorites. Sample Reference Pyroxene Plag/Mask Olivine Ilmenite Spinels Silica Fayalite Sulfide Phosphate K-spar/Si-K-Glass |  | | Catalog/List | | 2mm to 3mm brown crystal section in Albite with Ilmenite and or Magnetite. (Tuftane Evje Norway) lxl to...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 (article/letter/editorial) | | garnet, anatase,rutile, calcite,collophane,apatite, ilmenite, magnetite, chromite, zircon, tourmaline, sphene...basalt in Hawaii (Bates, 1962) and volcanicashin Guam (Carroll and Hathaway,1963) and Indonesia(Mohr and... J. C., 1963, Mineralogy of selected soils from Guam: U.S. Geol. Survey Prof. Paper Schmedeman,O. C. |  | | Journal (article/letter/editorial) | | Sciences, Harvard University, Cambridge, MA 02138, USA (Received October 12, 1992; revised and accepted...the saturating phases rutile, titanite (sphene), ilmenite or rarely, perovskite appear. Otherwise, Ti substitutes...Ti-oxides, also results from a breakdown reaction of ilmenite in hydrothermal environments (e.g., Conrad, 1990)...phonolite is concentrated in titanite (sphene) and ilmenite. The simplest interpretation is that the rutile...breakdown products of the titanite (sphene) and ilmenite. The brookite deposits in and around the Christy |  | 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) | | 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])...Amphibole Apatite Biotite Corundum K-feldspar Kyanite Ilmenite Muscovite Plagioclase Quartz Rutile Titanite Zircon...K-feldspar, quartz, biotite, apatite and occasional ilmenite) typical of any zircon crystallized from a crustal...chromitite of a Tibetan ophiolite. Proc. Natl. Acad. Sci. USA 2009, 106, 19233–19238. [CrossRef] [PubMed] Robinson |  | | Journal (article/letter/editorial) | | that contain pigeonite and augite together with ilmenite and single-phasetitaniferous magrretitegenerallyhave...equilibrium with any titaniferous magnetiteand ilmenite atthe fo,indicated by the intrinsic measurements...quartz, and two oxides (titaniferous magnetite and ilmenite) (Table l). Lindsley and Frost (1992) show how...hematite olivine orthopyroxene pigeonite ouanz ilmenite magnetite titaniferous magnetite (magnetite-ulv6spinelsolid...MgTiOJ in ilmenite FerO.(Fero" + FeTiOs+ MgTiOs)in ilmenite FeTiO"/(Fe,O"+ FeTiO3+ MgTiOo)in ilmenite Mg/(Mg |  | | Journal (issue) | | stationed at Agana, Guam, contains the following interesting paragraph: " Out here ( on Guam) all I've managed...coral limestone. The ants out here on the island of Guam live in the vugs so v.1henever ants are seen crawling...an ar6cle for us on the minerals found by him on Guam. 222 ROCKS AND MIN EIW.S WORLD· NEWS ON MINERAL...TITANIUM MALAY A. -The first large shipment of ilmenite, a byproduct of tin mining, f com Malaya was in...in 1935. Although no shipments of ilmenite were made in 1946,export permits were granted and shipments |  | | Journal (article/letter/editorial) | | negative P and Ti anomalies, indicative of magnetite/ ilmenite and apatite fractionation. The Helganes Dyke Swarm...the boninites from the present Mariana fore-arc, Guam, Saipan and the Bonin islands are fragments from... ~ -498 WEST PALAU PARECE WEST MARIANA MARIANA GUAM MARIANA PHILLIPINE KYUSHU VELA MARIANA TROUGH RIDGE...earth element abundances in volcanic rocks from Guam: implications for the evolution of the Mariana Arc...and geochemistry of early arc volcanic rocks from Guam. Bull Geol Soc Am 95:701 713 Richard P, Shimizu |
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