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| tandfonline.com/loi/taje20 Structure and evolution of Nauru Island, central Pacific Ocean a P. J. Hill & G...& G. Jacobson (1989) Structure and evolution of Nauru Island, central Pacific Ocean, Australian Journal...(1989) 36, 365-381 Structure and evolution of Nauru Island, central Pacific Ocean P. J. Hill1 and G...University, GPO Box 4, Canberra, ACT 2601, Australia. Nauru Island, in the central Pacific Ocean, is a raised...above sea level. Drilling has proved dolomitized limestone of Late Miocene or younger age to a depth of 55 |
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| (Cetacea, Physeteroidea) from the Pleistocene of Nauru, Equatorial Southwest Pacific Author(s): Erich M...(CETACEA, PHYSETEROIDEA) FROM THE PLEISTOCENE OF NAURU, EQUATORIAL SOUTHWEST PACIFIC ERICH M. G. FITZGERALD;...island—-a stem physeteroid from the Pleistocene of Nauru, represented by an isolated tooth (NMV P204274)... Victoria GEOGRAPHIC AND GEOLOGICAL SETTINGS Nauru Island is isolated in the equatorial southwest Pacific...island is approximately 70 m. Nauru occurs at the southern end of the Nauru Basin, which is situated between |
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| Line Islands, the Mid-Pacific Mountains and the Nauru Basin-Marshall Islands. Heating of the Pacific lithospheric...315 and 316 in the Line Islands, Site 462 in the Nauru Basin, and in New Guinea. The distribution of this...y.B.P. Similarities between the geology of the Nauru Basin and the Caribbean Ocean crust reinforce the...b y pelagic sediments and the isolated reefal limestone c a p s o f atolls. The d o m i n a n c e o f...G• Islands " /7 120 • 130 166 Bas ~ 125 Nauru _0 ° 462 155 DSDP 0 Krn 1000 I z I 0° |
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| applicationto the soil. Phosphaterock was originallya limestone,or dolomite,but has had its carbondioxide replacedby...Tahiti; Ocean island belongingto the British, and Nauru, mandatedto the British. Christmasislandin the...little bat guano,usedby local farmers, consist of limestone and bone breccia, the phosphate not penetratingfar...p. 239. 2 J. E. Came, "Phosphate Deposits in Limestone Caves in New South Wales," Ann. Rept. Dept. of...000 tons per annum. PleasantIsland--native name Nauru--was discovered by Captain Fearn of the Hunter, |
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| that insular phosphorites on high islands (e.g., Nauru) formed by chemical reactions between seabird guano...environment. Ancient apatites on high islands such as Nauru, Ocean Island and Makatea have alSOp values that...l i f t e d atolls, and usually resting on a limestone (dolomite) s u r f a c e with w e l l - d e v...associated host limestones (i.e. Quaternary for Nauru [4] to post-Miocene for Makatea [5]), only minimum...Phosphate NR-3 NR80-5 NR80-8 OC-2 BEL-5 MK-1 Nauru (NR) Nauru Nauru Ocean Id (OC) Bellona (BEL) Makatea (MK) |
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| deposits on atolls and low-lying (5 m or less) limestone islands. Previous studies of insular phosphate... massively phosphatized high islands of Ocean. Nauru and Makatea retain the basic physiographic form...phosphatization. In the phosphatic samples from Nauru and Makatea, apatite is the only mineral present...contain less F than high-island deposits such as Nauru and Makatea. According to the early work of JACOB...Rescr1pticniRemarks ~.------"-. 167YIO'E N-l // Central Nauru worltings' AP unknown' Friable white .._ chunks |
 | Safonova, I.Yu., Simonov, V.A., Buslov, M.M., Ota, T., Maruyama, Sh. (2008) Neoproterozoic basalts of the Paleo-Asian Ocean (Kurai accretionary zone, Gorny Altai, Russia): geochemistry, petrogenesis, and geodynamics. Russian Geology and Geophysics, 49 (4) 254-271 doi:10.1016/j.rgg.2007.09.011 | Journal (article/letter/editorial) |
| fragments of MORB, OIB, OPB and exotic “black limestone” units; 10 — olistostrome; 11 — oceanic island...carbonate sediments; 12 — Early Cambrian reef limestone and dolomite of the Kurai paleoseamount carbonate...shallow-water reef limestone to hemipelagic slope facies sediments (siliceous mudstone, clastic limestone, etc.)...containing interbeds and lenses of marble-like limestone and dolomite or, to a lesser degree, siliceous...paleoseamount: 4 — OPB/OIB volcanogenic unit with limestone beds, 5 — volcanosedimentary slope facies, 6 — |
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| Early- or Middle-Miocene age Newport Formation limestone beneath bauxite deposits near Mandeville in Manchester...phosphorite had developed from descending fluids at the limestone–bauxite contact. Eyles (1958) reported significant...Geddes, 1991). This survey did not cover the limestone areas where the phosphorites had been observed...the text. Fig. 2. Phosphorite covered karst limestone pinnacle beneath bauxite, Hope, Manchester Parish...shallow water Late-Oligocene Browns Town Formation limestone (E. Robinson, Pers. Comm., 2003) where no phosphorite |
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| Geochemistry of Cretaceous volcaniclastic sediments in the Nauru and East Mariana basins provides insights into the...over a considerably larger area into the adjacent Nauru, East Mariana, and possibly the Pigafetta and Lyra...the basaltic basement on the OJP and surrounding Nauru and East Mariana basins has been sampled at 10 DSDP...interbeds composed of laminated pelagic chert or limestone suggest high eruption frequency and emplacement...successions overlying Early Cretaceous basalt in the Nauru and East Mariana basins to the east and north of |
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| Tholeiitic Basalt Gabbroic Intrusions Paleozoic Limestone and chert • Sample Location 10km Samples 92NG41-48...BayFrn ' Nudna Limestone' Lonejlooe (middle Ladini an) • Lower Norian Chiliitono Limestone • Upper Kamian...values for the WFB Ontong Java Plateau (QJP) and the Nauru Basin. display a greater range of 2O6Pb/2O4Pb and...from the Kerguelen Plateau range genic Sr. For the Nauru Basin, Castillo et al. (1991) from 17-47 to 18-28...Sun & McDonough, 1989). A thin, crinoid-rich limestone unit was observed at a comparison of 230 Ma Pb-isotopic |
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| contemporaneous basalts drilled at OJP and the Nauru Basin. Based on the intersection of the seven palaeo-colatitudes...proper, as the Early Cretaceous lava flows in the Nauru Basin appear to be related to the plateau (e.g....Another site considered here is Site 462 in the Nauru Basin (Fig.l), where more than 600 m of Early Cretaceous...2 ~ (N = 15; a95 -- 7.1 ~ k = 28). The OJP and Nauru Basin site-mean inclinations and their statistical...parameters are listed in Table 2. The seven OJP and Nauru Basin palaeomagnetic palaeo-colatitudes suggest |
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| . . . Tunis, Algeria, France, . . . Ocean and Nauru Islands, r Belgium, ' Christmas Island, . . . ....nauruite of Elschner for the agate-like phosphate of Nauru; and the complex quercyite from South-Western France...igneous segregations, for some of it is in beds of limestone, through which, according to Wyatt, the Downloaded...due to the alteration of a granular phosphatic limestone. A second important group of phosphates which...thus accumulate as beds of phosphatic chalk or limestone. The phosphatic grains thus formed are supplemented |
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| the Farallon Plate, incorporate shallow-water limestone facies with faunal components like those of the...developments encountered in DSDP cores from the Nauru Basin (Marshall Islands), the Line Islands, the...Previously, it had only been recorded from a limestone block of uncertain, but suggested Cenomanian to...Similarly, my own field observations on shelf limestone sequences of this age in Oman have, as yet, revealed...redeposited reefal material of Palaeogene age in the Nauru Basin/Marshall Islands and Line Islands of the Central |
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| bituminous marl, phosphorite, chert, argillite, and limestone), and results from chemical and biological precipitation...tons. Island phosphate deposits. The deposits on Nauru, Christmas Island, and other islands in the Indian...is principally fine. grained apatite overlying limestone and is the highest grade of ore on the iSland...broken, sieved, and milled before being sold. Limestone and siliceous clumps are removed during this relatively...Christmas Island -----------------------------------Nauru -------------------------------------------Tota |
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| over a considerably larger area into the adjacent Nauru, East Mariana, and possibly the Pigafetta and Lyra...the basaltic basement on the OJP and surrounding Nauru and East Mariana basins has been sampled at 10 DSDP...interbeds composed of laminated pelagic chert or limestone suggest high eruption frequency and emplacement...successions overlying Early Cretaceous basalt in the Nauru and East Mariana basins to the east and north of...suggests that both the East Mariana Basin and the Nauru Basin volcaniclastic rocks were derived from once-emergent |
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| ~ ••• ••• •• $ Australia • • • New iealand Nauru Island Ocean Island ~ ••• ••• I O 0 I ••• ...quantities of high-grade phosphate ar.e obtained from limestone rave,s c.ontaining the bones and exc1,.ement of...of finely ground rock with 40 parts of ground limestone, 20 of common salt and 10 parts of dried sulphate...l. ~ulukt)p 1s an ~s?lated hill of very pure limestone which ca,? 'ie·~ considerable quant1t1es of apatite...crystal aggregates in a 1natrix of crystalline limestone. The area within which apatite is found extends |
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| over a considerably larger area into the adjacent Nauru and East Mariana basins. With an average thickness...has b e e n penetrated at D S D P Site 462 in the Nauru Basin and at O D P Site 802 in the East Mariana...flows. Basaltic units in the upper part of the Nauru Basin succession drilled at Site 462 were originally...two thin intervals of vitric tuff in the Aptian limestone immediately above basement at Site 1183 (Mahoney...drill sites on the OJP, and from Site 462 in the Nauru Basin. We will use these data, in conjunction with |
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| Syria Turkey Oceania Australia and Christmas Island Nauru South America Brazil Colombia, Peru, and Venezuela...Location map. Middle Eastern deposits Location map, Nauru and Christmas Island deposits Location map, Australian...Ocean Island), 381 Makatea Island (French Oceania) Nauru 1,303 Philippines Total 5 2,747 Miscellaneous countries:...91- 31 NAp 32 Australia (including Christmas Nauru Total South America: Brazil: Igneous Sedimentary...and silt, with some calcareous conglomerate and limestone. Thickness varies from to 40 m, averaging > 18 |
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| for outcrops in the Solomon Islands, and for the Nauru and East Mariana basins. Hf isotope ratios also...in the Solomon Islands, and at previous plateau, Nauru Basin and East Mariana Basin drill sites. The little-fractionated...did not reach basement but bottomed in Aptian limestone. The bathymetric contour interval is 1000 m (predicted...m-thick basalt sequence drilled at Site 462A in the Nauru Basin to the NE of the OJP proper (Mahoney 1987;...Isabel, Sites 289 and 807, and glasses from the Nauru and East Mariana basins. The Kwaimbaita-type nature |
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| volcanic and sedimentary rocks, and ( 3 ) reef limestone. The basaltic rocks are mainly dark-gray and gray-green...associated with sparse lenses of dark-gray and gray limestone, dolomite, black and gray cherts and rarely volcaniclastic...area, massive limestone and limestone breccias conformably overlap metabasalts. The limestone and associated...types of the limestone lack coarse-grained terrigenous clastic material. The limestone breccia contains...contains clasts of micritic limestone, metabasalts and chert. Poor grading, poor sorting and thin bedding |
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| settings, shallow-marine pelagic sediments such as limestone are suggestive of deposition on a topographic...peridotite and gabbro 142–153 Ma 110–120 Ma Pelagic limestone N-MORB- and OIB-like (HIMU Occurrence of relict...Paleolatitude; 10˚N–20˚N, Flood Late Carnian limestone contamination basalt on island arc in the Pacific...Jurassic Chert and N-MORB-, E-MORB- and OIB-like limestone Late Triassic, Late E-MORB- and OIB-like (Polynesian...Paleolatitude; ∼ 0˚, Occurrence of Late Jurassic limestone ferropicritic rock Mississippian Middle Jurassic |
 | Tsuboi, Tatsuya, Wada, Hideki, Nakamura, Toshio, Hang, Tran Thuy, Matsuzaki, Hiroyuki, Otsuji, Naho, Fujioka, Kantaro, Oguri, Kazumasa, Kitazato, Hiroshi (2014) Deep-sea limestone block as a source of 14C-depleted dissolved inorganic carbon at the Palau Trench. Chemical Geology, 364. 1-8 doi:10.1016/j.chemgeo.2013.11.013 | Journal (article/letter/editorial) |
| homepage: www.elsevier.com/locate/chemgeo Deep-sea limestone block as a source of 14C-depleted dissolved inorganic...David R. Hilton Keywords: Palau Trench Deep-sea Limestone dissolution Lysocline DIC Carbon isotopes a b...The submersible Shinkai 6500 located a large limestone block on the landward slope of the Palau Trench...carbon flux from the limestone block to seawater. The Sr isotope age of this limestone block indicates that...extracted from seawater collected around the limestone block yield values as low as − 295‰. Based on |
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| pisoids and Hearty (1996). On this young lithified limestone, it is easy to observe the first steps of karstification...Andros Island. (b, c) Karstified Pleistocene limestone: small dry and water-filled karstic basins filled... (g) Aerial view of a young karst on a young limestone, now drowned by the Holocene transgression: the...porosity of the Andros limestone, because of high rainfall. Andros limestone is perforated by numerous...small (decimetre sized) stumps of very altered limestone (Fig. 4h). 3.3.2.1 Modern detrital carbonate sedimentation |
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| pinnaclesof raised limestone. Phosphaticsolutionsfrom bird droppingsattacked the limestone; further weathering...comparablewith the outstandingPacific island deposits: Nauru and Ocean,northeastof the SolomonIslands,and Makatea...JAPANESE ISLANDS. 4:03 ellipticalplateauof limestone halfa milewideanda mileanda halflong. 'The surfaceof...plateauis fiat with occasional low outcropsof limestone,but the surfaceof the limestoneitself, under the...composedof igneous rock; wide, lower benchesof limestone occur on all sidesdownto the sea,but no phosphate |
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| extents of partial melting [16,17]. Indeed, the Nauru Basin magnetic lineations across from the drill... assume no offset in seafloor ages between the Nauru Basin where in fact the presence of ridge segment...with near-basement micritic and chalky pelagic limestone, which indicates deposition below upper bathyal...Near Ontong Java Plateau, we examine depths of the Nauru Basin to the east of the plateau which was drilled...and stratigraphic variations documented in the Nauru Basin [42], we attribute an uncertainty of 0.5 km |
