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Pfuhl, Helen A; McCave, I Nick (2003): (Table T1) Fossil, magnetic reversal, and additional datums of ODP Leg 189 sites [dataset]. PANGAEA, https://doi.org/10.1594/PANGAEA.780220, Supplement to: Pfuhl, HA; McCave, IN (2003): Integrated age models for the early Oligocene-early Miocene, Sites 1168 and 1170-1172. In: Exon, NF; Kennett, JP; Malone, MJ (eds.) Proceedings of the Ocean Drilling Program, Scientific Results, College Station, TX (Ocean Drilling Program), 189, 1-21, https://doi.org/10.2973/odp.proc.sr.189.108.2003

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Abstract:
The aim of this study is to assess the viability of age models based on shipboard and postcruise bio- and magnetostratigraphic datums, as of August 2002, using independently derived control points. The control points are based on matching between-site trends in stable isotope records, carbonate content, and weight percent sand. Site 1170 on the western South Tasman Rise has a good record of magnetic reversals, which suggests a hiatus prior to ~30 Ma (early Oligocene) relating to the Marshall Paraconformity, followed by strongly reduced sedimentation in the late Oligocene. Preservation of the Mi-1 event at this site is evidence for continued sedimentation across the Oligocene/Miocene boundary. Correlation of the Mi-1a event to the record at Site 1090 on the Agulhas Ridge confirms the usefulness of the magnetostratigraphic record at this site. However, the timing of the Mi-1 event at Site 1170 appears different from that at Site 1090, but is constrained by four magnetic reversals. At Site 1171 additional control points are consistent with biostratigraphic datums. Site 1172 is marked by the lowest sedimentation rates of all sites. Additional control points before 22 Ma are more consistent with the biostratigraphy than with the magnetostratigraphy. At Site 1168 we suggest that the magnetic reversal record MR1 provides the best match with the biostratigraphy and additional control points, as well as changes in the biogenic and lithogenic composition of the sedimentary record.
The late Eocene/early Oligocene Marshall Paraconformity (base = ~33 Ma at the type location) is evident at Sites 1170-1172, and low sedimentation rates occur at the two eastern sites (1171 and 1172) in the early Oligocene. A change in sedimentation just after the early-late Oligocene transition appears to reduce rates at Site 1170 and strongly affect the biogenic composition of sediments at Site 1168, which is less exposed to the flow of the Antarctic Circumpolar Current. The Oligocene-Miocene transition finally is marked by reduced sedimentation at Sites 1170-1172, but a relatively stronger decrease is noticeable at Site 1168. Above this boundary sedimentation rates are identical at Sites 1168 and 1170 above 21.5 Ma and at Sites 1171 and 1172 above 17 Ma.
Project(s):
Ocean Drilling Program (ODP)
Coverage:
Median Latitude: -45.554837 * Median Longitude: 147.375642 * South-bound Latitude: -48.499900 * West-bound Longitude: 144.412683 * North-bound Latitude: -42.609467 * East-bound Longitude: 149.928433
Date/Time Start: 2000-02-29T00:00:00 * Date/Time End: 2000-04-22T00:00:00
Minimum DEPTH, sediment/rock: 159.35 m * Maximum DEPTH, sediment/rock: 740.00 m
Event(s):
189-1168  * Latitude: -42.609467 * Longitude: 144.412683 * Date/Time: 2000-02-29T00:00:00 * Elevation: -2463.6 m * Penetration: 1282.4 m * Recovery: 1191.5 m * Location: Indian Ocean * Campaign: Leg189 * Basis: Joides Resolution * Method/Device: Composite Core (COMPCORE) * Comment: 138 cores; 1282.4 m cored; 0 m drilled; 92.9% recovery
189-1170  * Latitude: -47.150467 * Longitude: 146.049767 * Date/Time: 2000-03-31T00:00:00 * Elevation: -2704.4 m * Penetration: 1600 m * Recovery: 1026.6 m * Location: Indian Ocean * Campaign: Leg189 * Basis: Joides Resolution * Method/Device: Composite Core (COMPCORE) * Comment: 128 cores; 1175 m cored; 425 m drilled; 87.4% recovery
189-1171  * Latitude: -48.499900 * Longitude: 149.111683 * Date/Time: 2000-04-11T00:00:00 * Elevation: -2147.9 m * Penetration: 1466.8 m * Recovery: 995.2 m * Location: South Pacific Ocean * Campaign: Leg189 * Basis: Joides Resolution * Method/Device: Composite Core (COMPCORE) * Comment: 132 cores; 1219.2 m cored; 247.6 m drilled; 81.6% recovery
Comment:
Sediment depth is given in mbsf. Ages are based on Cande and Kent (1992, doi:10.1029/92JB01202; 1995, doi:10.1029/94JB03098) .
Parameter(s):
#NameShort NameUnitPrincipal InvestigatorMethod/DeviceComment
1 Event labelEvent
2 Age modelAge modelkaPfuhl, Helen A
3 Ageprofile Datum DescriptionAgeprof dat desPfuhl, Helen AFO = first occurrence, LO = last occurrence; D = diatom, DF = dinocyst, NF = nannofossil, PF = planktonic foraminifer, RD = radiolarian; MR = magnetic reversal; MPC = Marshall Paraconformity
4 DEPTH, sediment/rockDepth sedmGeocode
License:
Creative Commons Attribution 3.0 Unported (CC-BY-3.0)
Size:
202 data points

Data

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

1 
Event		2 
Age model [ka]		3 
Ageprof dat des		4 
Depth sed [m]
189-1170 14076MR-Onset C5ACn283.50
189-117014178MR-Termination C5ADn286.00
189-117014380D-FO Actinocyclus ingens var. nodus291.42
189-117014612MR-Onset C5ADn292.00
189-117014800MR-Termination C5Bn.1n294.00
189-117014888MR-Onset C5Bn.1n296.00
189-117015034MR-Termination C5Bn.2n297.50
189-117016014MR-Termination C5Cn.1n308.00
189-117016293MR-Onset C5Cn.1n310.50
189-117016327MR-Termination C5Cn.2n311.00
189-117016488MR-Onset C5Cn.2n312.00
189-117017615MR-Onset C5Dn323.00
189-117018781MR-Onset C5En338.00
189-117019048MR-Termination C6n341.00
189-1170216341090 Mi-1a365.76
189-1170217001090 Mi-1a366.59
189-117021859MR-Onset C6AAn370.50
189-117022151MR-Termination C6AAr.1n372.20
189-117022459MR-Termination C6AAr.2n374.90
189-117022493MR-Onset C6AAr.2n375.40
189-117022588MR-Termination C6Bn.1n375.80
189-117022804MR-Termination C6Bn.2n-bottom of gap377.40
189-117023535MR-Onset C6Cn.1n380.00
189-117023677MR-Termination C6Cn.2n382.00
189-117023800MR-Onset C6Cn.2n382.90
189-117024118MR-Onset C6Cn.3n386.00
189-117024730MR-Termination C7n.1n393.40
189-117024781MR-Onset C7n.1n394.00
189-117025496MR-Termination C7An395.00
189-117025648MR-Onset C7An396.20
189-117025823MR-Termination C8n.1n397.00
189-117026100NF-LO Chiasmolithus altus397.46
189-117026554MR-Onset C8n.2n398.60
189-117027027MR-Termination C9n402.00
189-117027972MR-Onset C9n403.00
189-117028283MR-Termination C10n.1n406.50
189-117029401MR-Termination C11n.1n440.00
189-117030240D-FO Rocella vigilans - ~top MPC458.55
189-1171 14076MR-Onset C5ACn159.35
189-117114178MR-Termination C5ADn161.30
189-117114612MR-Onset C5ADn167.20
189-117119048MR-Termination C6n207.20
189-117120131MR-Onset C6n223.50
189-1171217001170-benthic d13C240.23
189-1171224001170-benthic d18O249.36
189-1171228001170-bulk d13C251.00
189-1171231501170-benthic d13C251.90
189-1171238801170-benthic d18O258.56
189-1171264001170-bulk d13C268.76
189-1171269001170-benthic d13C269.26
189-117130240D-FO Rocella vigilans-~top MPC272.90
189-1172 14076MR-Onset C5ACn285.20
189-117214178MR-Termination C5ADn287.30
189-117214612MR-Onset C5ADn291.90
189-117214800MR-Termination C5Bn.1n293.30
189-117214888MR-Onset C5Bn.1n293.90
189-117215034MR-Termination C5Bn.2n296.30
189-117215155MR-Onset C5Bn.2n298.80
189-117216014MR-Termination C5Cn.1n302.30
189-117216726MR-Onset C5Cn.3n314.10
189-117217277MR-Termination C5Dn316.90
189-117218281MR-Termination C5En320.20
189-117218781MR-Onset C5En324.00
189-117219048MR-Termination C6n325.80
189-117220131MR-Onset C6n333.10
189-1172217901170-bulk d13C339.86
189-1172224901170-benthic d13C342.51
189-1172228101170-bulk d13C342.86
189-1172231501170-benthic d13C343.26
189-1172239501170-benthic d18O344.37
189-1172263401170-bulk d13C347.31
189-117229401MR-Termination C11n.1n356.10
189-117229662MR-Onset C11n.1n356.80
189-117229765MR-Termination C11n.2n357.30
189-117230098MR-Onset C11n.2n-~top MPC358.60
189-1168 14000NF-FO Triquetrorhabdulus rugosus244.30
189-116815100PF-FO Orbulina suturalis255.26
189-116816300PF- FO Praeorbulina curva264.90
189-116817400NF-FO Calcidiscus premacintyrei280.35
189-116818200NF-FO Sphenolithus heteromorphus293.80
189-116818300NF-LO Sphenolithus belemnos299.55
189-116819200NF-FO Sphenolithus belemnos313.90
189-116821400PF-LO Tenuitella munda341.10
189-116822600PF-FO Globoturborotalita woodi373.97
189-116823200PF-FO Globoquadrina dehiscens407.64
189-1168237501170-Mi1 peaks414.00
189-1168239001170-Mi1 peaks420.00
189-116824730MR-1-Termination C7n.1n428.05
189-116825183MR-1-Onset C7n.2n462.65
189-116825496MR-1-Termination C7An472.00
189-116827027MR-1-Termination C9n509.35
189-116827972MR-1-Onset C9n546.20
189-116828283MR-1-Termination C10n.1n572.90
189-116828512MR-1-Onset C10n.1n597.80
189-116828578MR-1-Termination C10n.2n602.45
189-116829401MR-1-Termination C11n.1n706.10
189-116829662MR-1-Onset C11n.1n716.70
189-116829765MR-1-Termination C11n.2n718.48
189-116830098MR-1-Onset C11n.2n729.90
189-116830479MR-1-Termination C12n733.95
189-116830939MR-1-Onset C12n740.00