georefid:1981-027031georefid:1981-026994SEDIS Publication Catalogue

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http://sedis.iodp.org/pub-catalogue/informationpointOfContact2011-06-23T00:00:00Zhttp://sedis.iodp.org/pub-catalogue/index.php?id=10.2973/dsdp.proc.55.137.19801980-01-01publicationgeorefid:1981-027031doi:10.2973/dsdp.proc.55.137.1980Greene, H. GaryU. S. Geol. Surv., Menlo Park, CA, United StatesauthorClague, David A.Middlebury Coll., Middlebury, VT, United StatesauthorDalrymple, G. BrentauthorTexas A & M University, Ocean Drilling Program, College Station, TX, United StatespublisherdocumentDigitalIn: Shambach, James (editor), Jackson, Everett Dale, Koizumi, Itaru, Avdeiko, Gennady, Butt, Arif, Clague, David, Dalrymple, G. Brent, Greene, H. Gary, Karpoff, Anne Marie, Kirkpatrick, R. James, Kono, Masaru, Hsin Yi Ling, McKenzie, Judith, Morgan, Jason, Takayama, Toshiaki, Initial reports of the Deep Sea Drilling Project covering Leg 55 of the cruises of the drilling vessel Glomar Challenger, Honolulu, Hawaii to Yokohama, Japan; July-September 197755759-788In terms of its geology and geomorphology, the southern and central Emperor Seamount chain varies from simple sharp-peaked volcanic seamounts to complex flat-topped, carbonate-capped guyots. Geologic maps for nine seamounts (Koko, Ojin, Jingu, Nintoku, Yomei, Suiko, "northern" Suiko, Seamount "B," and an unnamed seamount) were constructed from seismic reflection profile data. The seismic stratigraphy used consists of nine distinct acoustic units: (1) acoustic basement-volcanic rocks, (2) a well-layered sedimentary unit restricted to the adjacent sea floors, (3) shallow-water bank interior deposits, (4) reef or carbonate bank deposits, (5) terrace deposits, (6) shallow-water lagoonal sediments, (7) well-layered ponded sediments, (8) an acoustically transparent pelagic unit, and (9) slump or slope detritus. These units are defined using combinations of acoustical characteristics consisting of reflectability of the rocks (i.e., opaque or transparent), reflector type (i.e., amplitude, strong or weak), distortion (i.e., hyperbolics or side echoes), and lateral and vertical continuity reflection patterns which consist of contorted, parallel, and prograded reflectors.completedOceanographybasementCenozoicDeep Sea Drilling ProjectEmperor SeamountsIPODlandform descriptionLeg 55North PacificNorthwest Pacificocean floorsoceanographyPacific Oceanprofilesreefsseamountssedimentary rockssedimentsSite 430Site 431Site 433stratigraphysubsidencetopographyWest Pacificurn:org.iodp:exp:55urnlargerWorkCitationcampaignurn:org.iodp:exp:55:site:430urnlargerWorkCitationstudyurn:org.iodp:exp:55urnlargerWorkCitationcampaignurn:org.iodp:exp:55:site:431urnlargerWorkCitationstudyurn:org.iodp:exp:55urnlargerWorkCitationcampaignurn:org.iodp:exp:55:site:433urnlargerWorkCitationstudyurn:org.iodp:exp:55urnlargerWorkCitationcampaignEnglishgeoscientificInformation170.0000171.000035.000045.0000application/pdfunknownSEDIS Publication Catalogue

ana.macario@awi.de

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