Oligocene Planktonic Foraminifer Biostratigraphy of Hole 803D (Ontong Java Plateau) and Hole 628A (Little Bahama Bank), and Comparison with the Southern High Latitudes

Leckie, R. Mark; Farnham, Christie; Schmidt, Maxine

doi:10.2973/odp.proc.sr.130.012.1993

Cited by 42 publications

(34 citation statements)

References 28 publications

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“…Ages and calibration sources of planktonic foraminifer datums are presented in Tables T5 and T6. Planktonic foraminiferal taxonomic concepts selectively follow those of Maiya et al (1976), Takayanagi et al (1976), Kennett and Srinivasan (1983), Bolli and Saunders (1985), Toumarkine and Luterbacher (1985), Loeblich and Tappan (1988), Spezzaferri and Premoli Silva (1991), Chaisson and , Leckie et al (1993), Spezzaferri (1994), Pearson (1995), Chaisson and Pearson (1997), Pearson and Chaisson (1997), and Pearson et al (2006). A taxonomic list of planktonic foraminifer species from Tables T5 and T6 is given in Table T7.…”

Section: Foraminifers Planktonic Foraminiferal Zonal Scheme and Taxonomymentioning

confidence: 99%

Methods

Tada¹,

Murray²,

Zarikian³

et al. 2015

Proceedings of the IODP

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Section: Foraminifers Planktonic Foraminiferal Zonal Scheme and Taxonomymentioning

confidence: 99%

Methods

Tada¹,

Murray²,

Zarikian³

et al. 2015

Proceedings of the IODP

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“…Absolute ages were recalibrated to the Gradstein et al (2004) GPTS. Taxonomic assignments for planktonic foraminifers follow Kennett and Srinivasan (1983), Leckie et al (1993), and Pearson et al (2006).…”

Section: Zonation Schemementioning

confidence: 78%

Methods

2011

Proceedings of the IODP

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Information assembled in this chapter will help the reader understand the basis for our shipboard observations and preliminary conclusions. It will also enable the interested investigator to identify data and select samples for further analysis. Information presented here concerns only shipboard operations and analyses described in the site chapters. Methods used by various investigators for shore-based analyses of Expedition 318 data will be described in individual publications in various professional journals. This introductory section provides an overview of operations, curatorial conventions, and general core handling and analysis. Site locationsAt all Expedition 318 sites, Global Positioning System (GPS) coordinates from precruise site surveys were used to position the vessel on site. The only seismic system used during the cruise was the Syquest Bathy 2010 CHIRP subbottom profiler, which was monitored on the approach to each site to reconfirm the seafloor depths with those from the precruise survey. Once the vessel was positioned at a site, the thrusters were lowered and a positioning beacon was dropped to the seafloor. The dynamic positioning control of the vessel uses navigational input from the GPS and triangulation to the seafloor beacon, weighted by the estimated positional accuracy (Fig. F1). The final hole position was the mean position calculated from the GPS data collected over the time that the hole was occupied.

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“…Ages and sources for Cenozoic planktonic foraminifer datums are presented in Table T2. Cenozoic taxonomic concepts selectively follow Postuma (1971), Kennett and Srinivasan (1983), Bolli and Saunders (1985), Toumarkine and Luterbacher (1985), Spezzaferri and Premoli Silva (1991), Chaisson and Leckie (1993), Leckie et al (1993), Spezzaferri (1994), Pearson (1995), Berggren and Norris (1997), Chaisson and Pearson (1997), Pearson and Chaisson (1997), Norris (1998), and Olsson et al (1999). Eocene planktonic foraminifer taxonomy is currently under revision by the Eocene Planktonic Foraminifer Working Group and is adopted here.…”

Section: Planktonic Foraminiferal Zonal Scheme and Taxonomymentioning

confidence: 99%

Explanatory Notes

Backman¹,

Busch²,

Coxall³

et al. 2002

Proceedings of the Ocean Drilling Program

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The separate sections of the site chapters were written by the following shipboard scientists (authors are listed in alphabetical order; no seniority is implied): Drilling OperationsTwo standard coring systems were used during Leg 199: the advanced piston corer (APC), and the extended core barrel (XCB). These standard coring systems and their characteristics are summarized in various "Explanatory Notes" chapters of previous Initial Reports volumes as well as in a number of technical notes. The Leg 139 Initial Reports volume includes a particularly detailed description of these systems. Most cored intervals were ~9.6 m long, which is the length of a standard core barrel. In a few cases, the drill string was drilled, or "washed ahead," without recovering sediments to advance the drill bit to a target depth where core recovery needed to be resumed.Drilled intervals are referred to in meters below rig floor (mbrf) that are measured from the kelly bushing on the rig floor to the bottom of the drill pipe and meters below seafloor (mbsf) that are calculated. When sediments of substantial thickness cover the seafloor, the mbrf depth of the seafloor is determined with a mudline core, assuming 100% recovery for the cored interval in the first core. Water depth is calculated by subtracting the distance from the rig floor to sea level from the mudline measurement in mbrf. This water depth usually differs from precision depth recorder measurements by a few to several meters. The mbsf depths of core tops are determined by subtracting the seafloor depth (in mbrf) from the core-top depth (in mbrf). The resulting core-top datums in mbsf are the ultimate reference for any further depth calculation procedures. Drilling DeformationWhen cores are split, many show signs of significant sediment disturbance, including the concave-downward appearance of originally horizontal bedding, haphazard mixing of lumps of different lithologies (mainly at the tops of cores), fluidization, and flow-in. Core deformation may also occur during retrieval because of changes in pressure and temperature as the core is raised and during cutting and core handling on deck. Curatorial Procedures and Sample Depth CalculationsNumbering of sites, holes, cores, and samples follows the standard Ocean Drilling Program (ODP) procedure (Fig. F1). A full curatorial identifier for a sample consists of the leg, site, hole, core number, core type, section number, and interval in centimeters measured from the top of the core section. For example, a sample identification of 199-1215A-1H-1, 10-12 cm, represents a sample removed from the interval between 10 and 12 cm below the top of Section 1, Core 1 (H designates that this core was taken with the APC system) of Hole 1215A during Leg 199. Cored intervals are also referred to in "curatorial" mbsf. The mbsf of a sample is calculated by adding the depth of the sample below the section top and the lengths of all higher sections in the core to the core top datum measured with the drill string.A sediment core from less than a fe...

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Oligocene Planktonic Foraminifer Biostratigraphy of Hole 803D (Ontong Java Plateau) and Hole 628A (Little Bahama Bank), and Comparison with the Southern High Latitudes

Cited by 42 publications

References 28 publications

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