The Sedimentary Deposits of Suiko Seamount (Leg 55, Site 433): From the Reef Environment to the Pelagic Sedimentation

Karpoff, Anne Marie

doi:10.2973/dsdp.proc.55.118.1980

Cited by 6 publications

(11 citation statements)

References 15 publications

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“…2 and 3), are more common. This feature is similar to that of the hydrothermal clay from the Galapagos hydrothermal mounds (Kurnosov et al, 1983;Karpoff, 1989) and that of fibrous illite formed by burial diagenesis (Keller et al, 1986). Calcite is a recrystallized phase mixed with clay minerals in fine fractures.…”

Section: Volcaniclastic Turbidites From the Middle Cretaceous Event (supporting

confidence: 57%

“…Lithologically comparable to the widespread recent deep-sea red clays in the central Pacific, the Pigafetta Basin red clay is more influenced by the detrital and eolian terrigenous input from nearby islands and continents, such as the deposit from the most northwestern part of the Pacific (Lenotre et al, 1985;Bryant and Bennett, 1988;Karpoff, 1989).…”

Section: Uppermost Cretaceous and Cenozoic Pelagic Red Clay (Stage 6)mentioning

confidence: 95%

“…The estimated sedimentation rate for these deposits is about 3 m/m.y., relatively low compared to the rate of pelagic clays and siliceous oozes (1-10 m/m.y. ; references in Kennett, 1982;Karpoff, 1989).…”

Section: Stage 1: Callovian-bathonian Basal Sedimentationmentioning

confidence: 99%

“…In the red clay facies, the rare, poorly preserved, and often mixed fauna tentatively corroborates the existence of several successive hiatuses during these times. The main and widespread Cenozoic hiatuses observed in the Pacific realm are at the Eocene-Oligocene boundary, in the middle Miocene, and at the base of the lower Pliocene; these events are related to tectonic events and motion of the Pacific plate and subsequent oceanic responses, including the dynamics of water masses and productivity (Karpoff, 1989).…”

Section: Stage 6: Latest Cretaceous To Quaternary Red Clay Depositionmentioning

confidence: 99%

“…This facies contains the phases commonly found within the equivalent facies from Pacific deep basins: prevalent clay minerals, iron-oxides, and zeolites (Karpoff, 1989, and references therein). The manganese oxides that form micronodules do not give diffraction peaks, as they are amorphous phases.…”

Section: Uppermost Cretaceous and Cenozoic Pelagic Red Clay (Stage 6)mentioning

confidence: 99%

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Cenozoic and Mesozoic Sediments from the Pigafetta Basin, Leg 129, Sites 800 and 801: Mineralogical and Geochemical Trends of the Deposits overlying the Oldest Oceanic Crust

Karpoff¹

1992

Proceedings of the Ocean Drilling Program

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Sites 800 and 801 in the Pigafetta Basin allow the sedimentary history over the oldest remaining Pacific oceanic crust to be established. Six major deposition stages and events are defined by the main lithologic units from both sites. Mineralogical and chemical investigations were run on a large set of samples from these units. The data enable the evolution of the sediments and their depositional environments to be characterized in relation to the paleolatitudinal motion of the sites. The upper part of the basaltic crust at Site 801 displays a complex hydrothermal and alteration evolution expressed particularly by an ochre siliceous deposit comparable to that found in the Cyprus ophiolite. The oldest sedimentary cover at Site 801 was formed during the Callovian-Bathonian (stage 1) with red basal siliceous and metalliferous sediments similar to those found in supraophiolite sequences, and formed near an active ridge axis in an open ocean. Biosiliceous sedimentation prevailed throughout the Oxfordian to Campanian, with rare incursions of calcareous input during the middle Cretaceous (stages 2, 4, and 5).The biosiliceous sedimentation was drastically interrupted during the Aptian-Albian by thick volcaniclastic turbidite deposits (stage 3). The volcanogenic phases are pervasively altered and the successive secondary mineral parageneses (with smectites, celadonite, clinoptilolite, phillipsite, analcime, calcite, and quartz) define a "mineral stratigraphy" within these deposits. From this mineral stratigraphy, a similar lithologic layer is defined at the top of the Site 800 turbidite unit and the bottom of the Site 801 turbidite unit. Then, the two sites appear to have been located at the same distal distance from a volcanic source (hotspot). They crossed this locality, at about 10°S, at different times (latest Aptian for Site 800, middle Albian for Site 801).The Cretaceous siliceous sedimentation stopped during the late Campanian and was followed by deposition of Cenozoic pelagic red clay (stage 6). This deep-sea facies, which formed below the carbonate compensation depth, contains variable zeolite authigenesis in relation to the age of deposition, and records the global middle Cenozoic hiatus events. At the surface, the red clay from this part of the Pacific shows a greater detrital component than its equivalents from the central Pacific deep basins.

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Section: Volcaniclastic Turbidites From the Middle Cretaceous Event (supporting

confidence: 57%

Section: Uppermost Cretaceous and Cenozoic Pelagic Red Clay (Stage 6)mentioning

confidence: 95%

Section: Stage 1: Callovian-bathonian Basal Sedimentationmentioning

confidence: 99%

Section: Stage 6: Latest Cretaceous To Quaternary Red Clay Depositionmentioning

confidence: 99%

Section: Uppermost Cretaceous and Cenozoic Pelagic Red Clay (Stage 6)mentioning

confidence: 99%

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Cenozoic and Mesozoic Sediments from the Pigafetta Basin, Leg 129, Sites 800 and 801: Mineralogical and Geochemical Trends of the Deposits overlying the Oldest Oceanic Crust

Karpoff¹

1992

Proceedings of the Ocean Drilling Program

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(Table 1) Mineralogy at DSDP Leg 55 Holes

Karpoff

1980

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(Table 2) Geochemistry of sedimentary deposits at DSDP Leg 55 Holes

Karpoff

1980

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The Sedimentary Deposits of Suiko Seamount (Leg 55, Site 433): From the Reef Environment to the Pelagic Sedimentation

Cited by 6 publications

References 15 publications

Cenozoic and Mesozoic Sediments from the Pigafetta Basin, Leg 129, Sites 800 and 801: Mineralogical and Geochemical Trends of the Deposits overlying the Oldest Oceanic Crust

Cenozoic and Mesozoic Sediments from the Pigafetta Basin, Leg 129, Sites 800 and 801: Mineralogical and Geochemical Trends of the Deposits overlying the Oldest Oceanic Crust

(Table 1) Mineralogy at DSDP Leg 55 Holes

(Table 2) Geochemistry of sedimentary deposits at DSDP Leg 55 Holes

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