 | | Report (chapter) | | post-erosional eruptions of alkalic basalt, basanite, nephelinite and melilitite. Eruption rates and volumes increase...which extends nearly 6000 km across the north Pacific Ocean (Fig. I). This unique geological feature consists...of the Hawaiian Islands and Ridge and the Emperor Seamounts is reviewed in this paper, and their sequence...Location map of the Hawaiian-Emperor volcanic chain in the north-central Pacific Ocean. The bathymetry of the...and the pronounced bend between the Hawaiian and Emperor sections of the chain. Contour interval 1 km. |  | Fekiacova, Z., Abouchami, W., Galer, S.J.G., Garcia, M.O., Hofmann, A.W. (2007) Origin and temporal evolution of Koʻolau Volcano, Hawaiʻi: Inferences from isotope data on the Koʻolau Scientific Drilling Project (KSDP), the Honolulu Volcanics and ODP Site 843. Earth and Planetary Science Letters, 261 (1) 65-83 doi:10.1016/j.epsl.2007.06.005 | Journal (article/letter/editorial) | | Site 843, thought to be representative of the Pacific lithosphere under Hawaiʻi. Despite overlapping...isotope regressions through the HV, recent East Pacific Rise MORB and ODP Site 843 datasets are clearly...genetic relationship exists between the HV and the Pacific lithosphere. This observation provides strong evidence...against generation of HV as melts derived from the Pacific lithosphere, whether this be recent or old (100...samples represen- 67 tative of the 110 Ma-old Pacific lithosphere (King et al., 1993; Waggoner, 1993) |  | | Journal (article/letter/editorial) | | Evolution of a Young Hot Spot Trace Across Old Pacific Ocean Crust David P. Mattey Hawaii Institute of Geophysics...Mariana Basin (Fig. 1). The islands, atolls and seamounts of the Eastern Caroline Islands (see inset, Fig...Fig. 1) are superimposed on late Jurassic Pacific Ocean crust (Larson and Schlanger 1981), Neighboring...hotspot across part of the oldest portion of the Pacific Ocean crust. Hawaii Institute of Geophysics Contribution...Ponapean lavas in a regional comparison of Pacific ocean islands. Sketch maps of Truk, Ponape and Kusaie |  | | Journal (article/letter/editorial) | | Multiple Depleted Mantle Components in the Hawaiian-Emperor Chain: A Review Lauren N. Harrison, Dominique Weis...Multiple Depleted Mantle Components in the Hawaiian-Emperor Chain: A Review, Chemical Geology (2019), doi:...Hawaiian-Emperor Chain: A Review Lauren N. Harrison1,2, Dominique Weis1, Michael O. Garcia3 1. Pacific Centre...and Geochemical Research, Department of Earth, Ocean, and Atmospheric Sciences, University of British...Hawaiian rejuvenated basalts (~12.5 Ma). Hawaiian-Emperor chain depleted isotope compositions are compiled |  | | Journal (article/letter/editorial) | | and the Pacific islands. 4. Oceanic ridges (according to Belousov [ 1 ] ) of the western Pacific, Indian...phonolite-nephelinite complex with carbonatites has been noted in the Kaiserstuhl, and a nephelinite-leucitite...nephelinite-leucitite complex in the Eifel. 5. The mid-ocean rifts (Belousov [ 1 ]). We shall analyze the associational...from early to late in upward direction. 627 mid-ocean Rhyolite (alkalirhyolite)-trachyte -alkali-basaltic...ic, phonolite-trachyte—alkali-basaltic, and nephelinite-phonolite—alkali-basaltic. Thus, the time series |  | | Journal (article/letter/editorial) | | 113–140 2003 Geochemistry of Lavas from the Emperor Seamounts, and the Geochemical Evolution of Hawaiian... 2002 The Hawaiian–Emperor Seamount Chain (ESC), in the northern Pacific Ocean, was produced during...during the passage of the Pacific Plate over the Hawaiian hotspot. Major and trace element concentrations and...shield and post-shield lavas from nine of the Emperor Seamounts provide a 43 Myr record of the chemistry of...similar to those of Pacific mid-ocean ridge basalts. Lavas from the younger Emperor Seamounts (62–42 Ma) have |  | | Journal (article/letter/editorial) | | margins, in pericontinental zones of the continent–ocean boundary (Table 1). In the oceans it is poorly developed:...plumes are observed primarily on islands at the ocean–continent boundary, near passive continental margins...Islands in the Atlantic, the Comoros in the Indian Ocean, and others. For example, the Canary volcanic complexes...trachyte–alkali basalt (Miocene–Pleistocene), and nephelinite– phonolite–alkali basalt (Emerick and Duncan...Inland Pericontinental Intraplate uplifts Mid-Ocean Leucitite Leucitite – – Alkali rhyolite Alkali |  | | Book (chapter) | | International Ocean-Drilling Program (and its predecessors, Deep-Sea Drilling Project and Ocean Drilling Program)...Program) has imaged, mapped, and sampled the ocean floor over several decades. Parallel studies of ophiolites...carried out (see Box 8.1). Studies of ophiolites and ocean floor basalts have together contributed much to...stretch of the East Pacific Rise extending from 83 to 173 N. Here, the East Pacific Rise is the boundary...boundary between the Pacific and Cocos plates, which separate at a ‘fast’ rate of 110 mm/year. The map reveals |  | | Journal (article/letter/editorial) | | from Koko Seamount, at the southern end of the Emperor Seamount chain (Clague and Greenslate 1972; Clague...Bathymetric map of the Hawaiian Islands and nearby seamounts with 1,000 and 2,000 fathom contours. Note oblique...palagonitized tuff c o m m o n basalt is an olivine nephelinite/basanite (KA-15, 17, 19, 28, 31 and 34) which... Representative olivine analyses from Kaula nephelinite KA-17 KA-34 Xenocryst PH-Core KA-15 PH-Core...geochemistry Major elements Tholeiite Plag Basanite Nephelinite KA-14 KA-29 Gm Clot pH KA-28 Gm SV" Gm |  | Barker, A. K., Troll, V. R., Ellam, R. M., Hansteen, T. H., Harris, C., Stillman, C. J., Andersson, A. (2012) Magmatic evolution of the Cadamosto Seamount, Cape Verde: beyond the spatial extent of EM1. Contributions to Mineralogy and Petrology, 163 (6) 949-965 doi:10.1007/s00410-011-0708-2 | Journal (article/letter/editorial) | | Verde archipelago. Magmatic differentiation from nephelinite to phonolite involves fractional crystallisation...oceanic sediments and anhydrite precipitated in the ocean crust. The Nd–Pb isotopes have not been affected...chemically zoned Cape Verde mantle source. Keywords Ocean Islands Cape Verde Stable and radiogenic isotopes...163:949–965 Introduction Geological setting Ocean Islands are frequently considered as natural laboratories...based on the lack of continental crust underlying Ocean Islands, which is assumed to limit the potential |  | | Journal (article/letter/editorial) | | limburgite; ON--olivine nephelinite; MON = larnite normative olivine nephelinite. AB = average of two alkali...Bougault, H. and Treuil, M., 1980. Leg 55, Emperor Seamounts: trace elements in transitional tholeiites...O. and Jaques, A.L., 1979. Petrogenesis of mid-ocean ridge basalts. In: M.W. McElhinney {Editor), The...and geochemistry of volcanic rocks, DSDP Leg 55, Emperor Seamount chain. In: E.D. Jackson et al. (Editors)...Nicholls, G.D., 1967. Geochemical studies in the ocean as evidence for the composition of the mantle. In: |  | | Report (issue) | | southeast end of a long-lived hot spot chain. As the Pacific Plate of the Earth’s lithosphere moves slowly northwestward...it, and eventually die and subside beneath the ocean surface. The massive outpouring of lava flows from... .Z. Murray F ‘i F.Z. Moloka Z. Clarion F. Pacific Plate motion vector 10° 180 A OR EMPER S UNT...Islands 154 148 140 132 127 120 84 68 Age of ocean floor, in millions of years (Ma) 56 48 40 33...(red) and Hawaiian–Emperor volcanic chain, most of which consists of submarine seamounts, all depicted by |  | | Report (volume) | | A., TARNEY, J. & JORON, J. L. Geochemistry of ocean island basalts from the South Atlantic: Ascension...environments with the possible exception of mid-ocean ridges. Even here, though, mildly alkaline lavas...on all the continents and on islands in all the ocean basins. Their occurrences may be classified on the...rift systems. The separation of continents to form ocean basins must always be preceded by a phase of continental...tectonic control. In the ocean basins such magmatism manifests itself as ocean islands which are sometimes |  | | Journal (article/letter/editorial) | | Houston, TX 77058, USA Department of Earth and Ocean Sciences, University of South Carolina, 701 Sumter...the average ascent rates of the xenolith host nephelinite at 0.2–25.3 m s1. These rates are similar to...metasomatism was likely interrupted by the host nephelinite removing the samples from the mantle and bringing...Crater (SLC) and one peridotite from the Pali nephelinite vents erupted on the slopes of the Koolau caldera...with the water content measured in the host nephelinite and comparing it with the water content measured |  | | Report (issue) | | The horst-graben fabric produced at the East Pacific Rise some 90-95 Ma occurs on and north of the Hawaiian...non-circular Cretaceous seamounts 3) small rough-surfaced, nearly circular Cretaceous seamounts 4) small, smooth...Cretaceous seamounts, and 5) 1-2 km diameter, highbackscatter, probable Late Tertiary seamounts on the Hawaiian...The horst-graben relief generated at the East Pacific Rise about 90-95 Ma is clearly imaged in the entire...types of seamounts occur in the surveyed region (figs 3 and 5): 1) large flat-topped seamounts that are |  | Fan, Jian-Jun, Li, Cai, Xu, Jian-Xin, Wang, Ming (2014) Petrology, geochemistry, and geological significance of the Nadong ocean island, Banggongco–Nujiang suture, Tibetan plateau. International Geology Review, 56 (8) 915-928 doi:10.1080/00206814.2014.900651 | Journal (article/letter/editorial) | | geochemistry, and geological significance of the Nadong ocean island, Banggongco–Nujiang suture, Tibetan plateau...geochemistry, and geological significance of the Nadong ocean island, Banggongco–Nujiang suture, Tibetan plateau...geochemistry, and geological significance of the Nadong ocean island, Banggongco–Nujiang suture, Tibetan plateau...These data indicate that the Nadong ocean island is an Azores-type ocean island that formed during the mature...of the Banggongco–Nujiang Ocean. The conformable nature of the Nadong ocean island with the Mugagangri |  | | Journal (article/letter/editorial) | | grey shading is offshore, seaward-dipping lavas), ocean drilling sites (DSDP and ODP), magnetic isochrones...(Fig. 3c, d). A similar age was measured on a nephelinite lava at the base of the volcanic succession at...lava succession at 68°N, adjacent to the continent–ocean boundary. Plagioclase from two lava 272 M. Storey...fairly modest degrees of melting compared to mid-ocean ridge basalts. Rates of igneous productivity within...Radiometric ages for basement rocks from the Emperor Seamounts, ODP Leg 197. Geochem. Geophys. Geosys. 5 |  | | Report (issue) | | Wilson attributed the Hawaiian and some parallel Pacific island chains to volcanism above rising currents...regions observed or predicted to be extending. Ocean island basalt-like geochemistry is evidence for...emplacement, which is often poorly known. Although ocean island basalt–type geochemistry is generally agreed...from the Atlantic and Pacific oceans, which show much commonality. Each ocean hosts a single, currently...volcanism rather than at their beginnings. Each ocean contains several melting anomalies on or near spreading |  | Garcia, Michael O., Weis, Dominique, Jicha, Brian R., Ito, Garrett, Hanano, Diane (2016) Petrology and geochronology of lavas from Ka‘ula Volcano: Implications for rejuvenated volcanism of the Hawaiian mantle plume. Geochimica et Cosmochimica Acta, 185. 278-301 doi:10.1016/j.gca.2016.03.025 | Journal (article/letter/editorial) | | 96822, United States Pacific Centre for Isotopic and Geochemical Research, Earth, Ocean and Atmospheric Sciences...plume-derived hotspot having produced the Hawaiian-Emperor Chain, one of the longest linear chains in time...(which has been observed in some suites of mid-ocean ridge glasses; e.g., Mathez, 1976), although S content...Clague, 2015) and those from Mauritius in the Indian Ocean (Moore et al., 2011). Another major distinction...produce reasonable parent melt compositions for ocean island alkaline basalts (e.g., Walter, 1998). One |  | Safonova, I., Biske, G., Romer, R.L., Seltmann, R., Simonov, V., Maruyama, S. (2016) Middle Paleozoic mafic magmatism and ocean plate stratigraphy of the South Tianshan, Kyrgyzstan. Gondwana Research, 30. 236-256 doi:10.1016/j.gr.2015.03.006 | Journal (article/letter/editorial) | | Middle Paleozoic mafic magmatism and ocean plate stratigraphy of the South Tianshan, Kyrgyzstan...Maruyama, S., Middle Paleozoic mafic magmatism and ocean plate stratigraphy of the South Tianshan, Kyrgyzstan...MANUSCRIPT Middle Paleozoic mafic magmatism and ocean plate stratigraphy of the South Tianshan, Kyrgyzstan...which formed during the evolution of the Turkestan Ocean. A special focus is given to the relation between...and turbidites, which we consider as elements of Ocean Plate Stratigraphy (OPS). The age range of marine |  | | Journal (article/letter/editorial) | | of recycled mafic oceanic crust in the sources of ocean island basalts (OIB) has been a long-standing notion...recycled crust in the source of Hawaiian and other ocean island basalts (Sobolev et al., 2005, 2007). These...Langmuir 1.2. Study location Melt productivity of ocean island basalts Pico is the youngest island in the...(234U/238U) (238U/232Th) 2r Melt productivity of ocean island basalts 18 14 a Turner et al. 1997 Claude-Ivanaj...(1718 Santa Luzia) 16 12 Tephriphonolite 10 Nephelinite Phonotephrite 8 Basanite 6 Sao Trachybasalt |  | | Book | | It sits near the center of the world's largest ocean basin, thousands of miles from any continent or...glance: The islands are a group of volcanoes in the ocean. Closer examination reveals much more. Our scientific...was flooded. The Pacific Ocean was much larger. Far out in the depths of this wide ocean, early versions...waves, carried off to the northwest by the drifting ocean floor. The geologic explanation for the Hawaiian...abnormally hot rock, a "hot spot" deep beneath the ocean floor. The hot spot is firmly rooted in the earth's |  | | Book | | few decades is the study of oceanic basalts. The ocean basins cover about two thirds of the earth's surface...mantle. The Deep Sea Drilling Project (DSD P) and Ocean Drilling Program (0 D P) have been instrumental...generation, growth and alteration. However, most ocean drilling has only penetrated the top few hundred...crust and the methods used to survey and sample the ocean floor. Recent ideas on ophiolites as analogues for...back-arc basins, intraplate oceanic islands, and seamounts. Part IV (Sources) briefly reviews the stable |  | | Book | | of (1) ocean basins; (2) island arcs and continental margins; and (3) continents. In the ocean basins...spreading axes also underlie much of the inaccessible ocean floor. The island arcs and orogenic con¬ tinental...regions such as East Africa. OCEAN BASINS The magmatism of the ocean basins may be divided into three...Izu-Bonin-Marianas Philippines-Sulawesi South-west Pacific New Zealand Sumatra-Java Southern Italy 4 17 42...the deep ocean floor; the majority of oceanic islands and seamounts are of this type. THE OCEAN FLOOR The |  | | Book | | seafloor’s volcanic landscape located in the South Pacific near 25°30' S-129°30'W using multibeam data processed...Magmatism-Pacific Ocean. 2. Submarine geology. 3. Geology-Pacific Ocean. 4. Seamounts— Pacific Ocean. QE461...the Society and Austral Hotspots in the South Pacific: Seismic Detection, Monitoring and Interpretation...French! Polynesia, South Pacific Super Swell coe eee 3.43 Hawaiian-Emperor Island Chain:.....20.062:...Oe EE ee 3.4.6 The Great Meteor and Josephine Seamounts ............................ IOS ee BsALT Ie NCO |
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