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| in the Necker Rise, and (3) twelve rocks from the Line volcanic chain and its vicinity. 40Ar-39Ar ages...the F test suggested acceptable fits to a straight line at 95% confidence level were used for age interpretation...formation of the northern part of the Line volcanic chain. Ages for the Line chain samples are very complex...progression which should be expected if the whole Line volcanic chain is of a hot spot origin. 1. Introduction...rocks. Also, to test a hot spot origin of chain islands, it is imperative to know the ages of seamounts |
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| La Jolla, California 92093 ABSTRACT. The Samoan Islands are unique among the linear volcanic chains of...at the western end of the island chain, giving islands there an anomalously youthful appearance. Petrologic...geologic, and bathymetric data both on and around the islands indicate that the post-erosional rift zone developed...(Kear and lVood, 1959), whereas to the east. the islands of Upolu and Tutuila are progressively more eroded...stages of volcanism he had seen in the Hawaiian islands (Stearns, 1940): initial shield building followed |
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| geochemically similar to lavas from the Hawaiian Islands . Rock types recovered include tholeiitic and alkalic...virtually identical to that of lavas from the Hawaiian Islands. This indicates that the source composition and...four ofthe edifices northwest of the Hawaiian Islands; Shaw et al., 1980). Despite the importance of...Dalrymple, 1975). Two seamounts south of the Hawaiian Islands have been dated at about 86 Ma (Dymond and Windom...Ridge, 20-8) are typical oflavas from the Hawaiian Islands. These samples can be subdivided into two groups |
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| broad zones of diffuse volcanism (i.e. oceanic islands, seamounts, and small ridges), at least 500 km...2000 km long line of ocean islands and continental intrusive centers (the Cameroon Line) forms an apparent...analyzed in this study are shown with x’s. Cameroon Line volcanism is shown in black. The 4000 m isobath...o o n Line does not extend seaward of the most southwestern of the C a m e r o o n Line islands. Located... Inaccessible and Nightingale are two smaller islands which lie to the southwest of Tristan da Cunha |
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| compositions similar to those of lavas from the Hawaiian Islands, but initial 87 Sr/86Sr ratios extend to lower...NUMBER 1 JANUARY 2003 volcanoes on the Hawaiian Islands (Lanphere et al., 1980; Regelous & Hofmann, 1999;...from several other seamount chains (e.g. the Line Islands and the Society and Austral chains) have variable...EMPEROR SEAMOUNTS Active volcanoes on the Hawaiian Islands represent the current site of intra-plate volcanism...geochemical studies of lavas from the Hawaiian Islands, much less is known about the geochemistry of Hawaiian |
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| Ridge, especially from the Sao Thome and Principe Islands and Mount Cameroon area. This is supported both...d’Ivoire–Ghana Marginal Ridge. Arrows with thick line indicate the major supply by gravitational processes:...Zone. This trend is marked on the continent by a line of volcanoes which is considered as Miocene to Holocene...Holocene in age (Gouhier et al., 1974). The oceanic islands Fernando Póo (nowadays Bioko), Principe, São...distribution of the larger seamounts and volcanic islands (from Emery and Uchupi, 1984). 250 P. Giresse |
 | Hein, J.R., Kang, Jung-Keuk, Schulz, M.S., Park, Byong-Kwon, Kirschenbaum, Herbert, Yoon, Suk-Hoon, Olson, R.L., Smith, V.K., Park, Dong-Won, Riddle, G.O., Quinterno, P.J., Lee, Yoon-Oh, Davis, A.S., Kim, R.S., Pringle, M.S., Choi, Dong-Lim, Pickthorn, L.G., Schlanger, S.O., Duennebier, F.K., Bergersen, D.D., Lincoln, J.M. (1990) Geological, geochemical, geophysical, and oceanographic data and interpretations of seamounts and co-rich ferromanganese crusts from the Marshall Islands, KORDI-USGS R.V. FARNELLA cruise F10-89-CP. Open-File Report Vol. 1990 (90-407) US Geological Survey doi:10.3133/ofr90407 | Report (issue) |
| Co-rich Ferromanganese Crusts from the Marshall Islands, KORDIUSGS R.V. Farnella Cruise F10-89-CP by James...cooperative cruise (F10-89-CP) to the Marshall Islands (Figs. 1, 2). Eight scientists from Korea, twelve...one observer from the Republic of the Marshall Islands comprised the scientific staff (Table 1). The two...crusts that occur on seamounts in the Marshall Islands Exclusive Economic Zone (EEZ), and 2. To determine...evolution of the seamounts and atolls in the Marshall Islands region. Shipboard operations comprised 46 stations |
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| Normal Seismic Activity in and near the Japanese Islands Norio Yamakawa.. . . . . . . . . . . . . . . ....Land Gravity Survey of the Solomon and Bismarck Islands T.S.Laudon . . . . . . . . . . . . . . . . . .... . . . . . . . . . .279 . The British Solomon Islands: Some Geological Implications of the Gravity Data...Gravity Anomalies in Two Zones of the Japanese Islands Takeshi Dambara . . . . . . . . . . . . . . . ...Marine Gravity and Magnetic Studies of the Solomon Islands J . C. Rose, George P . Woollard, and Alezander |
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| these seamounts are alkali basalt, hawaiite, and mugearite (Davis et al., 2002). Davidson Seamount formed...approximate water depths based on the length of the dredge line, TE tensiometer readings, and wire angle. Samples...Gray, L.B., Clague, D.A., Hein, J.R., 2002. The Line Islands revisited: New NU 40Ar/39Ar geochronologic...of volcanism due to lithospheric extension: Line Islands revisited. Geochem. Geophys. Geosystems 3, 1–28...seamounts off southern California were ancient islands. Mar. Geol. 265, 146–156. doi:10.1016/j.margeo |
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| Volcanic Chains ...................... C. Caroline Islands .................................... D. Islas Revillagigedos...Seamount Chain ........................... B. Line Islands ....................................... C. Louisville....... D. Geology of the Offshore and Galapagos Islands ........ III. Correlation and Geological History... Contents xi Chapter 8. The Sea of Okhotsk-Kuril Islands Ridge and Kuril-Kamchatka Trench Helios S. Gnibidenko...the Sea of Okhotsk ............. III. The Kuril Islands Ridge and Kuril-Kamchatka Trench. . . . . A. Introduction |
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| different hierarchies: Hawaii BZ East Pacific Ocean Islands Polynesia United States All three BZ broader terms...Chondrostei NA Holostei NA Teleostei UF @ Adelaidean Islands Adalia use Antalya Adamawa Administrative region...Adzhar Adzharia BT Georgian Republic USSR Aegean Islands In 1981, broader term changed from Greece to Mediterranean...region. BT Mediterranean region SA Greek Aegean Islands Between Greece on the W and Tur- Admire Village...Mediterranean Mediterranean Sea SA Greek Aegean Islands aegerine use aegirine Aegina Town and island in |
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| collected with Go-flo® bottles suspended on Kevlar® line, filtered at sea through 0.45 Jim polycarbonate...Karin Ridge is the northwest terminus of the Line Islands Ridge. The sinuous crest of Karin Ridge varies...ripples characterize the sediment surface. Pebbles line the current-ripple troughs in places. Camera station...Eocene volcanism, found in other parts of the Line Islands ridge, has not been found to have occurred on...Pacific crusts, especially those from the Marshall Islands (489 ppb; Table 13). The PGEs show significant |
 | | Book |
| Catalogue of the Active Volcanoes of the World-Kurile Islands (Naples, 1958; in English) and Bezymyannyi Volcano...volcanoes and volcanic phenomena of the Kurile Islands as one of his first tasks. To a large degree, completion...petrochemical study of the volcanic rocks in the Kurile Islands. The conclusions reached required additional petrochemical...the expeditions to the volcanoes of the Kurile Islands: to V. 1. Lymareva, a participant in the first...37 37 41 44 Chapter V Volcanoes of the Kurile Islands Submarine Volcanoes. . . . . . . . . . . Terrestrial |
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| Term. Each candidate Term was then searched on¬ line, to determine how and how often it occurred in GeoRef...of Aleutian Islands SW of Alaska Peninsula. BT Alaska BT United States SA Aleutian Islands Adalia use...UF Adzharia BT Georgian Republic BT USSR Aegean Islands In 1981, broader term changed from Greece to Mediterranean...region. BT Mediterranean region SA Greek Aegean Islands Aegean Sea Between Greece on the W and Turkey...Mediterranean BA Mediterranean Sea SA Greek Aegean Islands aegerine use aegirine Aegina Town and island in |
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| settings-major oceans, back-arc basins, intraplate oceanic islands, and seamounts. Part IV (Sources) briefly reviews...Spreading centres Fracture zone structure Oceanic islands and swells Concluding statements Structure of...161 161 166 167 167 171 ENVIRONMENTS Oceanic islands and seamounts 174 PETER FLOYD 9.1 9.2 9.3 9.4...basalts from Iceland and other Atlantic oceanic islands Comparison of the North Atlantic and Iceland Concluding...model JOE CANN 1.1 Historical perspectives The islands of the ocean basins were familiar to early geologists |
 | | Book (volume) |
| island-arc volcanic archipelagoes, basin-like or trough-line seas. Though the development of these systems was...Mariana Basins and in the reg~ _ns of Hawaiian Islands and of the East Pacific Rise (expeditions "Mid-Pacific"...studies. The crustal structure in the Hawaiian Islands region was studied by the Scripps Institution of..."Crustal and upper mantle structure of the Solomon Islands". - Pacific Sci., 1970, 24, No. 3, pp . 315-332...This Mesozoic(?) age basin, between the Marshall Islands and the Mariana Trench, is subdivided into three |
 | | Book |
| seldascarsr ent 214 tandslides-of the Society Islands: ......cc.0c2.c.¢.2-soncaneasasece 214 ce ee OP...Oceanic Islands (<4 INUED cect: ................+5. 6.6.3 Landslide Related to Older Oceanic Islands (>4...x25 nna piedes soled aa RUT ae ie 8.2;2 Society Islands. xc geass scacunen nor coe ae eae 253 254 256...Pitcairn-Gambier Chaint 264 8/a:4 Marquesas: Islands... 7.cc.e2sy.coweshot ace eas ee 265 82-5 J...the observation that linear chains of volcanic islands and seamounts were younger than the oceanic crust |
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| 77 85 86 90 94 100 104 105 CHAPTER 3 Oceanic Islands, Large lgneous Provinces, Mafic Dyke Swarms, and...volcanic islands 112 3.2.1. The Hawaiian-Emperor seamounts chain 116 3.2.2. Marquesas Islands 119 3.2...manifestations of plume activities, such as oceanic islands and oceanic plateaux, continental flood basalts...olivine-rich xeno1iths in alkali basalts of ocean islands that cou1d represent fragments of mantle material...continental crust plot on, or close to, the geochron (the line that determines the age of the mantle). When 206PbP04 |
 | | Report (issue) |
| cobalt-enriched manganese crusts on the flanks of islands and seamounts in the Central Pacific, of polymetallic...Island nations of Tonga, Fiji, Vanuatu, the Solomon Islands, and Papua New Guinea under a tripartite agreement...coral-bearing sand identify chain on oceanic crust; islands were island areas. Interbeds of situated adjacent...Mountains unconformably overlies and buries volcanic islands and older deformed marine deposits. Wide spread...volcanic islands grew on this oceanic crust in much the same way that the Hawaiian Islands have formed |
 | | Report (issue) |
| uncontaminated ground waters plot near the meteoric water line, indicating minimal evaporation. Good correlations...M0re Basin, located northeast of the Shetland Islands. Numerous late Cretaceous or Paleocene sills have...expedition) from both the Hawaiian Islands and the leeward islands to the northwest. These data demonstrate...automation of the furnace, along with the extraction line and air pipette, allows unattended operation and...25 THE MANTLE SOURCES OF BASALTS FROM CANARY ISLANDS WITH REFERENCE TO PB-SR-ND ISOTOPIC SYSTEMATICS |
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| thickness Depth (km) of crust is represented black line. by only the outer 1-2 / Major Structural Units...equivalent depths in the lithosphere. In Figure 1-2, a line joining all points at 500°C (the 500°C isotherm)...slope of the line. The simplest interpretation of this relation is that the slope of the line indicates...gradient. The dashed line includes only the first term of the series, the dashed— dotted line includes the first...first and second terms, and the solid line includes the first three terms. formed at temperatures between |
 | | Report (issue) |
| 1990). Geochemical study of basalts from ocean islands thought to be “hotspots” revealed compositions...magma supply rates. (B) Histogram of the Hawaiian Islands at 1-Ma intervals. Gray bars show volumes and magma...chamber, its composition initially follows a liquid line of descent controlled by the precipitation of olivine...silica-undersaturated basalts observed at many ocean islands. More recently, Niu and O’Hara (2003) objected...variations similar to those observed both in oceanic islands and continental rift zones. It would be applicable |
 | | Book (volume) |
| of isolated islands and submerged plateaus and ridges (Figure 1). The three main islands of New Zealand...Schists, greywackes, and granitoids are exposed in islands on the Challenger Plateau and Chatham Rise and...New Zealand region (Zealandia). Land and major islands are pale brown; water less than 2500 m deep is...Australian plate boundary is shown by the thick black line, with teeth on the over riding plate. Only about...emergent above sea level as the North and South Islands. NR, Norfolk Ridge. 2 NEW ZEALAND Figure 2 Simplified |
 | | Book |
| normalized plot if this approximates to a straight line, and thereby the extent of fractionation of the...value obtained at the europium position by straight line interpolation between the plotted points for Sm...Y b Lu I Fig. 1.13. Range and averages (thick line) o f REE distribution coefficients for plagioclase/...concentrations are represented by the horizontal line at 3.0 in Fig. 4.1. Because the REE are incompatible...case is a suite of lavas from the South Sandwich islands (Hawkesworth et al., 1977), interpreted, however |
 | | Book |
| in italics. Cf; b axis; c below the equilibrium line. Cf: accumulation area. Syn: zone axis. of ablation...net balance with altitude up to the equilibrium line. Cf: activity index. attack as a result of a relative...element to which the 1 aboriginal/absorption line tachment scar opens. Cf: oral side. tent as in...implies a certainty or exact¬ um. Cf: absorption line. ness that may not be possible for an age determined...Geochronology in which the time-order is absorption line Any of the dark lines in the absorption spec¬ based |
