Citation:

PANGAEA.967640

Name: d13C values measured by Secondary Ion Mass Spectrometry in shells of the planktic foraminifer Morozovella velascoensis from ODP Site 865 (Central Pacific) across the PETM (~56 Ma)
Published: 2024-05-15
License: https://creativecommons.org/licenses/by/4.0/
Keywords: d13C; Foraminifera; PETM; SIMS

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Abstract:

Foraminiferal shells of the species M. velascoensis from sediments spanning ~650 ka across the PETM section of ODP Site 865, Central Pacific, were cast with 3 grains of UWC-3 calcite standard (Kozdon et al., 2009) in the center of a 25 mm round epoxy mount, ground to the level of best exposure, polished, cleaned, and Au-coated. Prior to geochemical analysis, shells were examined by Scanning Electron Microscopy (SEM) to identify subdomains suitable for in-situ d13C and Mg/Ca ratio measurements and to avoid diagenetically altered zones within each shell. In-situ d13C measurements were performed with ~7 µm beam spot size in the WiscSIMS Laboratory at UW-Madison by a CAMECA ims-1280 large radius multicollector ion microprobe) using the protocols described in a previous study (Kozdon et al., 2018). The in-situ d13C microanalyses primarily targeted subdomains located at the base of pustular outgrowths (muricae) along the chamber walls of each shell. Previous studies have shown that these subdomains are less susceptible to post-depositional alteration than the rest of the shell (Kozdon et al., 2011; Kozdon et al., 2013). Between one and five SIMS d13C microanalyses were performed for each shell. Reproducibility of the individual spot analysis of UWC-3 standard (d13C = -0.91‰ V-PDB, Kozdon et al., 2011) bracketing samples is on average 0.7‰ (± 2 SD).

Keyword(s):

d13C; Foraminifera; PETM; SIMS

Related to:

Kozdon, Reinhard; Kelly, Daniel Clay (in review): Hot tropical temperatures during the Paleocene-Eocene thermal maximum revealed by paired in-situ d13C and Mg/Ca measurements on individual planktic foraminifer shells.

References:

Kozdon, Reinhard; Kelly, Daniel Clay; Kita, Noriko T; Fournelle, John H; Valley, John W (2011): Planktonic foraminiferal oxygen isotope analysis by ion microprobe technique suggests warm tropical sea surface temperatures during the Early Paleogene. Paleoceanography, 26(3), PA3206, https://doi.org/10.1029/2010PA002056

Kozdon, Reinhard; Kelly, Daniel Clay; Kitajima, K; Strickland, A; Fournelle, John H; Valley, John W (2013): In situ d18O and Mg/Ca analyses of diagenetic and planktic foraminiferal calcite preserved in a deep-sea record of the Paleocene-Eocene thermal maximum|. Paleoceanography, 28(3), 517-528, https://doi.org/10.1002/palo.20048

Kozdon, Reinhard; Kelly, Daniel Clay; Valley, John W (2018): Diagenetic Attenuation of Carbon Isotope Excursion Recorded by Planktic Foraminifers During the Paleocene‐Eocene Thermal Maximum. Paleoceanography and Paleoclimatology, 33(4), 367-380, https://doi.org/10.1002/2017PA003314

Kozdon, Reinhard; Ushikubo, Takayuki; Kita, Noriko T; Spicuzza, Michael J; Valley, John W (2009): Intratest oxygen isotope variability in the planktonic foraminifer N. pachyderma: Real vs. apparent vital effects by ion microprobe. Chemical Geology, 258(3-4), 327-337, https://doi.org/10.1016/j.chemgeo.2008.10.032

Funding:

National Science Foundation (NSF), grant/award no. 1405224 : Reconciling substrate specific differences in the carbon isotope excursion marking the Paleocene-Eocene thermal maximum

National Science Foundation (NSF), grant/award no. 2004618 : Facility Support: The WiscSIMS National Ion Microprobe

Coverage:

Latitude: 18.440400 * Longitude: -179.555000

Date/Time Start: 1992-04-04T01:30:00 * Date/Time End: 1992-04-04T14:15:00

Minimum DEPTH, sediment/rock: 100.50 m * Maximum DEPTH, sediment/rock: 105.00 m

Event(s):

143-865C * Latitude: 18.440400 * Longitude: -179.555000 * Date/Time Start: 1992-04-04T01:30:00 * Date/Time End: 1992-04-04T14:15:00 * Elevation: -1528.0 m * Penetration: 136.3 m * Recovery: 114.11 m * Location: North Pacific Ocean * Campaign: * Basis: Joides Resolution * Method/Device: Drilling/drill rig (DRILL) * Comment: 15 cores; 136.3 m cored; 0 m drilled; 83.7 % recovery

Parameter(s):

#	Name	Short Name	Unit	Principal Investigator	Method/Device	Comment
1	Event label	Event		Kozdon, Reinhard
2	Sample code/label	Sample label		Kozdon, Reinhard	DSDP/ODP/IODP sample designation
3	Hole	H		Kozdon, Reinhard		Hole/core
4	Section	Sect		Kozdon, Reinhard
5	Interval	Interval		Kozdon, Reinhard		cm
6	DEPTH, sediment/rock	Depth sed	m	Kozdon, Reinhard		Geocode – mbsf
7	Identification	ID		Kozdon, Reinhard		Shell #
8	Size fraction	Size fraction		Kozdon, Reinhard		µm
9	Morozovella velascoensis, δ13C	M. velascoensis δ13C	‰ PDB	Kozdon, Reinhard	Large radius multicollector ion microprobe, CAMECA, ims-1280	vs. V-PDB

License:

Creative Commons Attribution 4.0 International (CC-BY-4.0)

Status:

Curation Level: Enhanced curation (CurationLevelC)

Size:

434 data points

Data

Download dataset as tab-delimited text — use the following character encoding:

1 Event	2 Sample label	3 H	4 Sect	5 Interval	6 Depth sed [m]	7 ID	8 Size fraction	9 M. velascoensis δ13C [‰ PDB]
143-865C	143-865C-12-2,70-72	865C	12-2	70-72	100.50	97	300-355	6.43
143-865C	143-865C-12-2,70-72	865C	12-2	70-72	100.50	97	300-355	2.33
143-865C	143-865C-12-2,70-72	865C	12-2	70-72	100.50	97	300-355	5.95
143-865C	143-865C-12-2,70-72	865C	12-2	70-72	100.50	95	300-355	4.04
143-865C	143-865C-12-2,70-72	865C	12-2	70-72	100.50	95	300-355	5.40
143-865C	143-865C-12-2,70-72	865C	12-2	70-72	100.50	95	300-355	4.40
143-865C	143-865C-12-3,30-32	865C	12-3	30-32	101.60	117	300-355	3.65
143-865C	143-865C-12-3,30-32	865C	12-3	30-32	101.60	117	300-355	4.66
143-865C	143-865C-12-3,70-72	865C	12-3	70-72	102.00	70	300-355	4.82
143-865C	143-865C-12-3,70-72	865C	12-3	70-72	102.00	70	300-355	2.63
143-865C	143-865C-12-3,130-132	865C	12-3	130-132	102.60	72	300-355	2.58
143-865C	143-865C-12-3,130-132	865C	12-3	130-132	102.60	72	300-355	3.83
143-865C	143-865C-12-3,130-132	865C	12-3	130-132	102.60	72	300-355	4.45
143-865C	143-865C-12-4,6-8	865C	12-4	6-8	102.87	43	300-355	0.78
143-865C	143-865C-12-4,6-8	865C	12-4	6-8	102.87	43	300-355	0.82
143-865C	143-865C-12-4,10-12	865C	12-4	10-12	102.90	30	300-355	5.10
143-865C	143-865C-12-4,10-12	865C	12-4	10-12	102.90	28	300-355	5.39
143-865C	143-865C-12-4,10-12	865C	12-4	10-12	102.90	28	300-355	4.23
143-865C	143-865C-12-4,20-22	865C	12-4	20-22	103.00	25	300-355	5.68
143-865C	143-865C-12-4,20-22	865C	12-4	20-22	103.00	25	300-355	4.90
143-865C	143-865C-12-4,30-32	865C	12-4	30-32	103.10	10	300-355	4.37
143-865C	143-865C-12-4,30-32	865C	12-4	30-32	103.10	10	300-355	3.91
143-865C	143-865C-12-4,30-32	865C	12-4	30-32	103.10	10	300-355	2.59
143-865C	143-865C-12-4,30-32	865C	12-4	30-32	103.10	8	300-355	4.11
143-865C	143-865C-12-4,30-32	865C	12-4	30-32	103.10	8	300-355	5.10
143-865C	143-865C-12-4,70-72	865C	12-4	70-72	103.50	16	300-355	4.57
143-865C	143-865C-12-4,70-72	865C	12-4	70-72	103.50	14	300-355	4.23
143-865C	143-865C-12-4,70-72	865C	12-4	70-72	103.50	14	300-355	4.55
143-865C	143-865C-12-4,70-72	865C	12-4	70-72	103.50	14	300-355	4.29
143-865C	143-865C-12-4,70-72	865C	12-4	70-72	103.50	14	300-355	5.06
143-865C	143-865C-12-4,70-72	865C	12-4	70-72	103.50	14	300-355	3.75
143-865C	143-865C-12-4,70-72	865C	12-4	70-72	103.50	12	300-355	5.43
143-865C	143-865C-12-4,70-72	865C	12-4	70-72	103.50	12	300-355	5.07
143-865C	143-865C-12-4,70-72	865C	12-4	70-72	103.50	12	300-355	3.07
143-865C	143-865C-12-4,90-92	865C	12-4	90-92	103.70	126	300-355	5.64
143-865C	143-865C-12-4,122-124	865C	12-4	122-124	104.00	100	300-355	3.71
143-865C	143-865C-12-4,122-124	865C	12-4	122-124	104.00	100	300-355	3.84
143-865C	143-865C-12-4,122-124	865C	12-4	122-124	104.00	100	300-355	5.23
143-865C	143-865C-12-4,122-124	865C	12-4	122-124	104.00	100	300-355	4.30
143-865C	143-865C-12-4,140-142	865C	12-4	140-142	104.20	123	300-355	3.26
143-865C	143-865C-12-4,140-142	865C	12-4	140-142	104.20	123	300-355	3.45
143-865C	143-865C-12-4,140-142	865C	12-4	140-142	104.20	123	300-355	4.51
143-865C	143-865C-12-4,140-142	865C	12-4	140-142	104.20	122	300-355	4.63
143-865C	143-865C-12-4,140-142	865C	12-4	140-142	104.20	122	300-355	5.25
143-865C	143-865C-12-4,146-149	865C	12-4	146-149	104.28	34	300-355	3.16
143-865C	143-865C-12-5,0-2	865C	12-5	0-2	104.30	94	300-355	3.96
143-865C	143-865C-12-5,0-2	865C	12-5	0-2	104.30	94	300-355	4.79
143-865C	143-865C-12-5,0-2	865C	12-5	0-2	104.30	94	300-355	6.07
143-865C	143-865C-12-5,0-2	865C	12-5	0-2	104.30	94	300-355	5.18
143-865C	143-865C-12-5,0-2	865C	12-5	0-2	104.30	91	300-355	4.41
143-865C	143-865C-12-5,0-2	865C	12-5	0-2	104.30	91	300-355	6.08
143-865C	143-865C-12-5,0-2	865C	12-5	0-2	104.30	91	300-355	7.62
143-865C	143-865C-12-5,0-2	865C	12-5	0-2	104.30	91	300-355	6.80
143-865C	143-865C-12-5,0-2	865C	12-5	0-2	104.30	89	300-355	6.19
143-865C	143-865C-12-5,0-2	865C	12-5	0-2	104.30	89	300-355	5.17
143-865C	143-865C-12-5,0-2	865C	12-5	0-2	104.30	89	300-355	5.35
143-865C	143-865C-12-5,0-2	865C	12-5	0-2	104.30	89	300-355	3.88
143-865C	143-865C-12-5,70-72	865C	12-5	70-72	105.00	5	300-355	3.25
143-865C	143-865C-12-5,70-72	865C	12-5	70-72	105.00	5	300-355	5.27
143-865C	143-865C-12-5,70-72	865C	12-5	70-72	105.00	5	300-355	3.21
143-865C	143-865C-12-5,70-72	865C	12-5	70-72	105.00	5	300-355	5.36
143-865C	143-865C-12-5,70-72	865C	12-5	70-72	105.00	5	300-355	4.51