Citation:

G23741A.1

Name: (Table DR1) Trace element contents in basalts from ODP Hole 33-317A
Published: 2007
License: https://creativecommons.org/licenses/by/3.0/

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Abstract:

Numerous large igneous provinces formed in the Pacific Ocean during Early Cretaceous time, but their origins and relations are poorly understood. We present new geochronological and geochemical data on rocks from the Manihiki Plateau and compare these results to those for other Cretaceous Pacific plateaus. A dredged Manihiki basalt gives an 40Ar-39Ar age of 117.9+/-3.5 Ma (2 sigma), essentially contemporaneous with the Ontong Java Plateau ~2500 km to the west, and the possibly related Hikurangi Plateau ~3000 km to the south. Drilled Manihiki lavas are tholeiitic with incompatible trace element abundances similar to those of Ontong Java basalts. These lavas may result from high degrees of partial melting during the main eruptive phase of plateau formation. There are two categories of dredged lavas from the Danger Islands Troughs, which bisect the plateau. The first is alkalic lavas having strong enrichments in light rare earth and large-ion lithophile elements; these lavas may represent late-stage activity, as one sample yields an 40Ar-39Ar age of 99.5+/-0.7 Ma. The second category consists of tholeiitic basalts with U-shaped incompatible element patterns and unusually low abundances of several elements; these basalts record a mantle component not previously observed in Manihiki, Ontong Java, or Hikurangi lavas. Their trace element characteristics may result from extensive melting of depleted mantle wedge material mixed with small amounts of volcaniclastic sediment. We are unaware of comparable basalts elsewhere.

Other version:

Samples and methods - five tables - one figure

Project(s):

Deep Sea Drilling Project (DSDP)

Coverage:

Latitude: -11.001500 * Longitude: -162.263000

Date/Time Start: 1973-11-30T00:00:00 * Date/Time End: 1973-11-30T00:00:00

Minimum Elevation: -2598.0 m * Maximum Elevation: -2598.0 m

Event(s):

33-317A * Latitude: -11.001500 * Longitude: -162.263000 * Date/Time: 1973-11-30T00:00:00 * Elevation: -2598.0 m * Penetration: 943.5 m * Recovery: 163.2 m * Location: South Pacific/PLATEAU * Campaign: * Basis: Glomar Challenger * Method/Device: Drilling/drill rig (DRILL) * Comment: 33 cores; 310.5 m cored; 3 m drilled; 52.6 % recovery

Parameter(s):

#	Name	Short Name	Unit	Principal Investigator	Method/Device
1	Sample code/label	Sample label		Ingle, Stephanie	DSDP/ODP/IODP sample designation
2	Rubidium	Rb	mg/kg	Ingle, Stephanie	Thermal-ionization multicollector mass spectrometer VG Sector
3	Strontium	Sr	mg/kg	Ingle, Stephanie	Thermal-ionization multicollector mass spectrometer VG Sector
4	Yttrium	Y	mg/kg	Ingle, Stephanie	Thermal-ionization multicollector mass spectrometer VG Sector
5	Zirconium	Zr	mg/kg	Ingle, Stephanie	Thermal-ionization multicollector mass spectrometer VG Sector
6	Niobium	Nb	mg/kg	Ingle, Stephanie	Thermal-ionization multicollector mass spectrometer VG Sector
7	Caesium	Cs	mg/kg	Ingle, Stephanie	Thermal-ionization multicollector mass spectrometer VG Sector
8	Barium	Ba	mg/kg	Ingle, Stephanie	Thermal-ionization multicollector mass spectrometer VG Sector
9	Lanthanum	La	mg/kg	Ingle, Stephanie	Thermal-ionization multicollector mass spectrometer VG Sector
10	Cerium	Ce	mg/kg	Ingle, Stephanie	Thermal-ionization multicollector mass spectrometer VG Sector
11	Praseodymium	Pr	mg/kg	Ingle, Stephanie	Thermal-ionization multicollector mass spectrometer VG Sector
12	Neodymium	Nd	mg/kg	Ingle, Stephanie	Thermal-ionization multicollector mass spectrometer VG Sector
13	Samarium	Sm	mg/kg	Ingle, Stephanie	Thermal-ionization multicollector mass spectrometer VG Sector
14	Europium	Eu	mg/kg	Ingle, Stephanie	Thermal-ionization multicollector mass spectrometer VG Sector
15	Gadolinium	Gd	mg/kg	Ingle, Stephanie	Thermal-ionization multicollector mass spectrometer VG Sector
16	Terbium	Tb	mg/kg	Ingle, Stephanie	Thermal-ionization multicollector mass spectrometer VG Sector
17	Dysprosium	Dy	mg/kg	Ingle, Stephanie	Thermal-ionization multicollector mass spectrometer VG Sector
18	Holmium	Ho	mg/kg	Ingle, Stephanie	Thermal-ionization multicollector mass spectrometer VG Sector
19	Erbium	Er	mg/kg	Ingle, Stephanie	Thermal-ionization multicollector mass spectrometer VG Sector
20	Thulium	Tm	mg/kg	Ingle, Stephanie	Thermal-ionization multicollector mass spectrometer VG Sector
21	Ytterbium	Yb	mg/kg	Ingle, Stephanie	Thermal-ionization multicollector mass spectrometer VG Sector
22	Lutetium	Lu	mg/kg	Ingle, Stephanie	Thermal-ionization multicollector mass spectrometer VG Sector
23	Hafnium	Hf	mg/kg	Ingle, Stephanie	Thermal-ionization multicollector mass spectrometer VG Sector
24	Thorium	Th	mg/kg	Ingle, Stephanie	Thermal-ionization multicollector mass spectrometer VG Sector
25	Uranium	U	mg/kg	Ingle, Stephanie	Thermal-ionization multicollector mass spectrometer VG Sector

License:

Creative Commons Attribution 3.0 Unported (CC-BY-3.0)

Size:

100 data points

Data

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

1 Sample label	2 Rb [mg/kg]	3 Sr [mg/kg]	4 Y [mg/kg]	5 Zr [mg/kg]	6 Nb [mg/kg]	7 Cs [mg/kg]	8 Ba [mg/kg]	9 La [mg/kg]	10 Ce [mg/kg]	11 Pr [mg/kg]	12 Nd [mg/kg]	13 Sm [mg/kg]	14 Eu [mg/kg]	15 Gd [mg/kg]	16 Tb [mg/kg]	17 Dy [mg/kg]	18 Ho [mg/kg]	19 Er [mg/kg]	20 Tm [mg/kg]	21 Yb [mg/kg]	22 Lu [mg/kg]	23 Hf [mg/kg]	24 Th [mg/kg]	25 U [mg/kg]
317A-32R-1	0.31	108	17.1	45.5	2.19	0.0028	15.3	3.57	8.11	1.23	6.03	1.90	0.739	2.56	0.462	3.18	0.684	1.91	0.301	2.00	0.307	1.35	0.221	0.0536
317A-33R-3	0.66	98	17.1	45.2	2.54	0.0018	17.1	2.72	7.15	1.14	5.63	1.83	0.718	2.59	0.465	3.11	0.667	1.87	0.296	1.90	0.291	1.33	0.221	0.0522
317A-34R-1	0.47	114	17.5	58.3	4.31	0.0011	17.8	3.92	9.84	1.46	7.16	2.16	0.822	2.83	0.500	3.26	0.708	1.95	0.297	2.02	0.307	1.65	0.366	0.0831
317A-34R-4	0.68	117	20.6	66.7	3.63	0.0009	23.8	4.47	11.40	1.67	8.29	2.52	0.932	3.27	0.578	3.84	0.822	2.24	0.349	2.26	0.345	1.87	0.412	0.0825