 | Price, R.C., Gray, C.M., Wilson, R.E., Frey, F.A., Taylor, S.R. (1991) The effects of weathering on rare-earth element, Y and Ba abundances in Tertiary basalts from southeastern Australia. Chemical Geology, 93 (3) 245-265 doi:10.1016/0009-2541(91)90117-a | Journal (article/letter/editorial) | | sequentially across a weathering profile in a tholeiitic basalt flow, from fresh to intensively altered rock, illustrate...Introduction Many geochemical investigations of basalt petrogenesis are based on an assumption that "Current...observed between old and young tholeiites from Hawaii are substantially greater than would be expected...trace-element abundance patterns in a suite of basalt samples and a study of a weathering profile has...Newer group which forms an extensive (25,000 km z ) basalt field covering much of the state of Victoria (Fig |  | | Journal (article/letter/editorial) | | spheroidal weathering of basalts and andesites in Hawaii and Guatemala Lina C. Patino *, Michael A. Velbel...Sciences Building, East Lansing, MI 48824-1115, USA Received 1 November 2001; received in revised form...Guatemala) and (2) a hot spot (Hawaiian Islands of Oahu, Maui and Hawai’i). The initial major element compositions...mobility; Basalts; Spheroidal weathering; Corestones; Hawaii; Guatemala 1. Introduction * Corresponding author...shell systems from the two geographic localities, Hawaii and Guatemala, have simple histories of exposure |  | Caroff, Martial, Guillou, Hervé, Lamiaux, Michaël, Maury, René C., Guille, Gérard, Cotten, Joseph (1999) Assimilation of ocean crust by hawaiitic and mugearitic magmas: an example from Eiao (Marquesas) Lithos, 46 (2) 235-258 doi:10.1016/s0024-4937(98)00068-1 | Journal (article/letter/editorial) | | southern ŽNaore. parts of the volcanic shield of Eiao island in the Marquesas archipelago, French Polynesia...0.04 Ma. Petrographic types include tholeiites, alkali basalts, picrobasalts, hawaiites, mugearites and...from fractional crystallization of parental alkali basalt magmas. The other groups are characterized by...Marquesas archipelago; Ocean island basalts 1. Introduction Although ocean island basalts ŽOIB. mostly derive...mechanism for imprinting a DMM signature on ocean island lavas. The purpose of the present paper, based |  | | Journal (article/letter/editorial) | | GEOPHYSICS, UNIVERSITY OF HAWAII, 1680 EAST–WEST RD, HONOLULU, HI 96822, USA RECEIVED APRIL 22, 2005;...range of crustal xenoliths is hosted in young alkali basalt lavas and scoria deposits (erupted 3–5 ka)...distinctive among Hawaiian plutonic rocks in having alkali feldspar, apatite, zircon and biotite, and evolved...a demonstrated affinity to hypersthenenormative basalt and petrologic links between the xenoliths and...1800 AD Ka‘ up ulehu alkali basalt lavas. A distinct class of leucocratic, alkali feldspar-bearing xenoliths |  | | Journal (article/letter/editorial) | | t e / e p s l Major element chemistry of ocean island basalts — Conditions of mantle melting and heterogeneity...6100 Main Street, MS 126, Houston, Texas 77005, USA Department of Terrestrial Magnetism, Carnegie Institution...5241 Broadbranch Rd., NW, Washington D.C., 20015, USA a r t i c l e i n f o Article history: Received...December 2009 Editor: L. Stixrude Keywords: ocean island basalts major element chemistry lithosphere–asthenosphere...‘reference’ ocean island basalts (OIBs) for 120 volcanic centers from 31 major island groups and constrain |  | | Report (issue) | | Late-shield strata extend the silica range as alkali basalt and even hawaiite lava flows are sparsely interlayered...a wide range in the age of volcanism along the island chain, even though the age of Hawaiian shields...younger to the southeast. For example, almost every island from Ni‘ihau to Hawai‘i had an eruption in the...and 0.4 million years ago, even though only the Island of Hawai‘i had active volcanoes in their shield...the Hawaiian Ridge between Midway Islands and the Island of Hawai‘i. These giant landslides displace large |  | | Journal (article/letter/editorial) | | anhydrous basis) and alkalis, encompassing the ®elds of basalt through dacite and trachybasalt through trachyandesite...enrichment; the mildly alkaline (MA) suite refers to alkali basalts and their typical mildly alkaline derivatives...illustrated in Figs. 1 through 4. Note that very low alkali (<1.5%) systems are only represented by a few 1-atm...circles tholeiitic suite (TH)]. Note that very low alkali (<1.5%) compositions only refer to experiments...fO2 (for 1-atm experiments only), mgCpx, silica, alkali and alumina contents (normalized to 100% anhydrous) |  | Yang, Kyounghee, Arai, Shoji, Yu, Jae-eun, Yun, Sung-Hyo, Kim, Jin-Seop, Hwang, Jin-Yeon (2012) Gabbroic xenoliths and megacrysts in the Pleisto-Holocene alkali basalts from Jeju Island, South Korea: The implications for metasomatism of the lower continental crust. Lithos, 142. 201-215 doi:10.1016/j.lithos.2012.03.006 | Journal (article/letter/editorial) | | megacrysts in the Pleisto-Holocene alkali basalts from Jeju Island, South Korea: The implications for...2012 Available online 13 March 2012 Keywords: Jeju Island Gabbroic xenoliths Cumulus origin Metasomatic amphibole...gabbro, occur in the Pleisto-Holocene alkali basalts from Jeju Island, South Korea. The gabbroic xenoliths...gabbroic xenoliths (plus megacrysts) and the host basalt, indicating that the xenoliths belong to the Jeju...kbars) above the present Moho estimates beneath Jeju Island, where the xenoliths represent wall rocks. Following |  | Cotten, J., Le Dez, A., Bau, M., Caroff, M., Maury, R.C., Dulski, P., Fourcade, S., Bohn, M., Brousse, R. (1995) Origin of anomalous rare-earth element and yttrium enrichments in subaerially exposed basalts: Evidence from French Polynesia. Chemical Geology, 119 (1) 115-138 doi:10.1016/0009-2541(94)00102-e | Journal (article/letter/editorial) | | features of Ce anomalies, have been documented from island ar6 basalts and even from man tites (Neal and Taylor...rocks. Examples include within-plate basalts from Hawaii (Roden et al., 1984; Fodor et al., 1987, 1992)...and Australia (Price et al., 199 1) as well as island arc volcanics from New Zealand (Kushel and Smith...Cambier and in the Marquesas, where they pre-date the alkali/transitional i,asalts and related intermediate...exposing alkali/transitional basalt to trachyte series. Nuku Hiva is the second largest island of the Marquesas |  | | Report (chapter) | | data for mid-ocean ridge basalts (MORBs) and ocean island basalts (OIB) are used to formulate chemical systematics...processes responsible for development of ocean island basalt (OIB) source characteristics. (4) Document the...wedge above a subduction zone. Studies of modern island arc basalts suggest that subduction of the oceanic...contrast, owing to their volatile-rich character, alkali basalts rise rapidly to the Earth's surface, often...typical N-type and E-type MORB and an oceanic alkali basalt (OIB) with 87Sr/86Sr ~ 0.7035. The data suggest |  | | Journal (article/letter/editorial) | | would be classified as alkali basalt–hawaiite on a conventional 225 alkali–silica plot; see Fig. 2...this plot serves as a robust discriminator between alkali basalts and N-MORBS, as the TiO2 contents of clinopyroxenes.../ Chemical Geology 235 (2006) 222–237 Fig. 2. Alkali–silica classification plot showing that both lower...(N-MORB, filled square) lies well below the alkali basalt– tholeiite dividing line. Data are for unleached...more realistic Rb/Cs = 60 for BSE). An average EM2 basalt pattern, dashed line, is shown for comparison (average |  | | Report (issue) | | references. ISBN 0-87590-987-6 1. Volcanoes--Hawaii. 2. Volcanism--Hawaii. I. Takahashi, E. (Eiichi), 1951-. II...Section 1 Progress in Deep Underwater Geology Around Hawaii Introduction to Section 1 TPO INARA | & iore ...Multibeam Sonar Surveys Along the Southeastern Hawaii Ridge: Guide to the CD-ROM John R. Smith, Kenji...Kohala and Mauna Kea Volcanoes and the Hana Ridge, Hawaii John R. Smith, Kenji Satake, Julia K. Morgan, and...Volcaniclastic Sedimentation Around the Southern Flank of Hawaii Jiro Naka, Toshiya Kanamatsu, Peter W. Lipman, |  | | Journal (article/letter/editorial) | | OBSERVATORY, UNIVERSITY OF COLUMBIA, PALISADES, NY 01964, USA 3 VRYJE UNIVERSITEIT, AMSTERDAM, THE NETHERLANDS...Discovery Rise and Shona Ridge system, comprising alkali basalt through trachybasalt to trachyandesite and trachyte... Samples from Discovery Rise include primitive basalt, trachyandesite and trachyte. Mafic lavas are relatively...remarkably similar to that giving rise to Gough Island lavas some 400 km to the north. All lavas dredged...geochemically enriched relative to mid-ocean ridge basalt, with least altered samples having La/Smn 42, Zr/Nb |  | Verhaert, Michèle, Bernard, Alain, Saddiqi, Omar, Dekoninck, Augustin, Essalhi, Mourad, Yans, Johan (2018) Mineralogy and Genesis of the Polymetallic and Polyphased Low Grade Fe-Mn-Cu Ore of Jbel Rhals Deposit (Eastern High Atlas, Morocco) Minerals, 8 (2) 39 doi:10.3390/min8020039 | Journal (article/letter/editorial) | | dendrites are also observed. Most altered/weathered basalt is composed of a greenish clay-rich layer, a red-brown...phosphates have been observed in the poorly weathered basalt, close to quartz, and in the Stratification is...Permian-Triassic poorly weathered basalt; (c) most altered/weathered basalt composed of three different layers:...layers: red poorly weathered basalt; (c) most altered/weathered basalt composed of three different layers:... green (G) and white (W); (d) poorly weathered basalt, with albite (Ab) and anorthite (An) laths, green |  | | Report (issue) | | eventually assumed by what had become the Territory of Hawaii. In 1919, the Territory requested a comprehensive...of the geology and water resources of the entire island chain. One of the main participants in this work...years, Stearns published 12 comprehensive reports (Hawaii Division of Hydrography Bulletins) covering the...the characteristics of every major Hawaiian island (except Kauai, which was covered in 1960 in volume 13...with authority that “the two active craters of Hawaii [Kīlauea and Mauna Loa] should share equally with |  | | Report (issue) | | eventually assumed by what had become the Territory of Hawaii. In 1919, the Territory requested a comprehensive...of the geology and water resources of the entire island chain. One of the main participants in this work...years, Stearns published 12 comprehensive reports (Hawaii Division of Hydrography Bulletins) covering the...the characteristics of every major Hawaiian island (except Kauai, which was covered in 1960 in volume 13...with authority that “the two active craters of Hawaii [Kīlauea and Mauna Loa] should share equally with | | | Report (issue) | | eventually assumed by what had become the Territory of Hawaii. In 1919, the Territory requested a comprehensive...of the geology and water resources of the entire island chain. One of the main participants in this work...years, Stearns published 12 comprehensive reports (Hawaii Division of Hydrography Bulletins) covering the...the characteristics of every major Hawaiian island (except Kauai, which was covered in 1960 in volume 13...with authority that “the two active craters of Hawaii [Kīlauea and Mauna Loa] should share equally with |  | | Report (issue) | | eventually assumed by what had become the Territory of Hawaii. In 1919, the Territory requested a comprehensive...of the geology and water resources of the entire island chain. One of the main participants in this work...years, Stearns published 12 comprehensive reports (Hawaii Division of Hydrography Bulletins) covering the...the characteristics of every major Hawaiian island (except Kauai, which was covered in 1960 in volume 13...with authority that “the two active craters of Hawaii [Kīlauea and Mauna Loa] should share equally with |  | | Report (issue) | | eventually assumed by what had become the Territory of Hawaii. In 1919, the Territory requested a comprehensive...of the geology and water resources of the entire island chain. One of the main participants in this work...years, Stearns published 12 comprehensive reports (Hawaii Division of Hydrography Bulletins) covering the...the characteristics of every major Hawaiian island (except Kauai, which was covered in 1960 in volume 13...with authority that “the two active craters of Hawaii [Kīlauea and Mauna Loa] should share equally with |  | | Report (issue) | | eventually assumed by what had become the Territory of Hawaii. In 1919, the Territory requested a comprehensive...of the geology and water resources of the entire island chain. One of the main participants in this work...years, Stearns published 12 comprehensive reports (Hawaii Division of Hydrography Bulletins) covering the...the characteristics of every major Hawaiian island (except Kauai, which was covered in 1960 in volume 13...with authority that “the two active craters of Hawaii [Kīlauea and Mauna Loa] should share equally with |  | | Report (issue) | | eventually assumed by what had become the Territory of Hawaii. In 1919, the Territory requested a comprehensive...of the geology and water resources of the entire island chain. One of the main participants in this work...years, Stearns published 12 comprehensive reports (Hawaii Division of Hydrography Bulletins) covering the...the characteristics of every major Hawaiian island (except Kauai, which was covered in 1960 in volume 13...with authority that “the two active craters of Hawaii [Kīlauea and Mauna Loa] should share equally with |  | | Report (issue) | | eventually assumed by what had become the Territory of Hawaii. In 1919, the Territory requested a comprehensive...of the geology and water resources of the entire island chain. One of the main participants in this work...years, Stearns published 12 comprehensive reports (Hawaii Division of Hydrography Bulletins) covering the...the characteristics of every major Hawaiian island (except Kauai, which was covered in 1960 in volume 13...with authority that “the two active craters of Hawaii [Kīlauea and Mauna Loa] should share equally with |  | | Report (issue) | | eventually assumed by what had become the Territory of Hawaii. In 1919, the Territory requested a comprehensive...of the geology and water resources of the entire island chain. One of the main participants in this work...years, Stearns published 12 comprehensive reports (Hawaii Division of Hydrography Bulletins) covering the...the characteristics of every major Hawaiian island (except Kauai, which was covered in 1960 in volume 13...with authority that “the two active craters of Hawaii [Kīlauea and Mauna Loa] should share equally with |  | | Report (issue) | | eventually assumed by what had become the Territory of Hawaii. In 1919, the Territory requested a comprehensive...of the geology and water resources of the entire island chain. One of the main participants in this work...years, Stearns published 12 comprehensive reports (Hawaii Division of Hydrography Bulletins) covering the...the characteristics of every major Hawaiian island (except Kauai, which was covered in 1960 in volume 13...with authority that “the two active craters of Hawaii [Kīlauea and Mauna Loa] should share equally with |  | | Report (issue) | | eventually assumed by what had become the Territory of Hawaii. In 1919, the Territory requested a comprehensive...of the geology and water resources of the entire island chain. One of the main participants in this work...years, Stearns published 12 comprehensive reports (Hawaii Division of Hydrography Bulletins) covering the...the characteristics of every major Hawaiian island (except Kauai, which was covered in 1960 in volume 13...with authority that “the two active craters of Hawaii [Kīlauea and Mauna Loa] should share equally with |
|
