/* DATA DESCRIPTION:
Citation:	Greenough, John D; Fryer, Brian J (1990): Noble metal abundances in ODP Leg 115 basalts (Table 1) [dataset]. PANGAEA, https://doi.org/10.1594/PANGAEA.755695, 
	Supplement to: Greenough, JD; Fryer, BJ (1990): Distribution of gold, palladium, platinum, rhodium, ruthenium, and iridium in Leg 115 hotspot basalts: implications for magmatic processes. In: Duncan, RA; Backmann, J; Peterson, LC; et al. (eds.), Proceedings of the Ocean Drilling Program, Scientific Results, College Station, TX (Ocean Drilling Program), 115, 71-84, https://doi.org/10.2973/odp.proc.sr.115.128.1990
Abstract:	A comparison of 50 basalts recovered at Sites 706, 707, 713, and 715 along the Reunion hotspot trace during Ocean Drilling Program Leg 115 in the Indian Ocean shows that seafloor alteration had little effect on noble metal concentrations (Au, Pd, Pt, Rh, Ru, and Ir), determined by inductively coupled plasma-mass spectrometry (ICP-MS), which generally tend to decrease with magma evolution. Their compatible-element behavior may be related to the precipitation of Ir-Os-based alloys, chromite, sulfides, and/or olivine and clinopyroxene in some combination. The simplest explanation indicates silicate control of concentrations during differentiation.
	Basalts from the different sites show varying degrees of alkalinity. Noble metal abundances tend to increase with decreasing basalt alkalinity (i.e., with increasing percentages of mantle melting), indicating that the metals behave as compatible elements during mantle melting. The retention of low-melting-point Au, Pd, and Rh in mantle sulfides, which mostly dissolve before significant proportions of Ir-Os-based alloys melt, explains increasing Pd/Ir ratios with decreasing alkalinity (increasing melting percentages) in oceanic basalts. High noble metal concentrations in Indian Ocean basalts (weighted averages of Au, Pd, Rh, Pt, Ru, and Ir in Leg 115 basalts are 3.2, 8.1, 0.31, 7.3, 0.22, and 0.11 ppb, respectively), compared with basalts from some other ocean basins, may reflect fundamental primary variations in upper- mantle noble metal abundances
Project(s):	Ocean Drilling Program (ODP) (URI: https://www-odp.tamu.edu:443/)
Coverage:	MEDIAN LATITUDE: -6.576960 * MEDIAN LONGITUDE: 65.796860 * SOUTH-BOUND LATITUDE: -13.114000 * WEST-BOUND LONGITUDE: 59.016800 * NORTH-BOUND LATITUDE: 5.081500 * EAST-BOUND LONGITUDE: 73.831300
	DATE/TIME START: 1987-05-22T23:15:00 * DATE/TIME END: 1987-06-28T07:45:00
	MINIMUM ELEVATION: -2920.0 m * MAXIMUM ELEVATION: -1552.0 m
Event(s):	115-706A * LATITUDE: -13.114000 * LONGITUDE: 61.371000 * DATE/TIME START: 1987-05-22T23:15:00 * DATE/TIME END: 1987-05-23T08:00:00 * ELEVATION: -2517.0 m * Penetration: 47.5 m * Recovery: 39.28 m * LOCATION: South Indian Ridge, South Indian Ocean * CAMPAIGN: Leg115 (URI: https://doi.org/10.2973/odp.proc.ir.115.1988) * BASIS: Joides Resolution (URI: https://www-odp.tamu.edu:443/resolutn.html) * METHOD/DEVICE: Drilling/drill rig (DRILL) * COMMENT: 6 cores; 47.5 m cored; 0 m drilled; 82.7 % recovery
	115-706C * LATITUDE: -13.114000 * LONGITUDE: 61.371000 * DATE/TIME START: 1987-05-24T03:30:00 * DATE/TIME END: 1987-05-26T00:45:00 * ELEVATION: -2518.0 m * Penetration: 121.7 m * Recovery: 19.72 m * LOCATION: South Indian Ridge, South Indian Ocean * CAMPAIGN: Leg115 (URI: https://doi.org/10.2973/odp.proc.ir.115.1988) * BASIS: Joides Resolution (URI: https://www-odp.tamu.edu:443/resolutn.html) * METHOD/DEVICE: Drilling/drill rig (DRILL) * COMMENT: 8 cores; 77.4 m cored; 0 m drilled; 25.5 % recovery
	115-707C * LATITUDE: -7.545300 * LONGITUDE: 59.016800 * DATE/TIME START: 1987-05-29T10:30:00 * DATE/TIME END: 1987-06-02T03:30:00 * ELEVATION: -1552.0 m * Penetration: 443.2 m * Recovery: 91.56 m * LOCATION: South Indian Ridge, South Indian Ocean * CAMPAIGN: Leg115 (URI: https://doi.org/10.2973/odp.proc.ir.115.1988) * BASIS: Joides Resolution (URI: https://www-odp.tamu.edu:443/resolutn.html) * METHOD/DEVICE: Drilling/drill rig (DRILL) * COMMENT: 27 cores; 259.4 m cored; 0 m drilled; 35.3 % recovery
	115-713A * LATITUDE: -4.193000 * LONGITUDE: 73.394200 * DATE/TIME START: 1987-06-16T23:30:00 * DATE/TIME END: 1987-06-20T09:15:00 * ELEVATION: -2920.0 m * Penetration: 191.7 m * Recovery: 114.98 m * LOCATION: Indian Ocean * CAMPAIGN: Leg115 (URI: https://doi.org/10.2973/odp.proc.ir.115.1988) * BASIS: Joides Resolution (URI: https://www-odp.tamu.edu:443/resolutn.html) * METHOD/DEVICE: Drilling/drill rig (DRILL) * COMMENT: 22 cores; 191.7 m cored; 0 m drilled; 60 % recovery
	115-715A * LATITUDE: 5.081500 * LONGITUDE: 73.831300 * DATE/TIME START: 1987-06-24T16:00:00 * DATE/TIME END: 1987-06-28T07:45:00 * ELEVATION: -2273.0 m * Penetration: 287.8 m * Recovery: 137.62 m * LOCATION: Lakshadweep Sea * CAMPAIGN: Leg115 (URI: https://doi.org/10.2973/odp.proc.ir.115.1988) * BASIS: Joides Resolution (URI: https://www-odp.tamu.edu:443/resolutn.html) * METHOD/DEVICE: Drilling/drill rig (DRILL) * COMMENT: 31 core; 287.8 m cored; 0 m drilled; 47.8 % recovery
Parameter(s):	Event label (Event)
	Sample code/label (Sample label) * PI: Greenough, John D * METHOD/DEVICE: DSDP/ODP/IODP sample designation (URI: hdl:10013/epic.27914.d001)
	Lithologic unit/sequence (Unit) * PI: Greenough, John D
	Gold [ng/kg] (Au) * PI: Greenough, John D
	Palladium [ng/kg] (Pd) * PI: Greenough, John D
	Rhodium [ng/kg] (Rh) * PI: Greenough, John D
	Platinum [ng/kg] (Pt) * PI: Greenough, John D
	Ruthenium [ng/kg] (Ru) * PI: Greenough, John D
	Iridium [ng/kg] (Ir) * PI: Greenough, John D
License:	Creative Commons Attribution 3.0 Unported (CC-BY-3.0) (URI: https://creativecommons.org/licenses/by/3.0/)
Size:	390 data points
*/
Event	Sample label	Unit	Au [ng/kg]	Pd [ng/kg]	Rh [ng/kg]	Pt [ng/kg]	Ru [ng/kg]	Ir [ng/kg]
115-706A	115-706A-6H-CC,21-23	706-E	700	1200	80	900	190	130
115-706C	115-706C-2R-2,74-77	706-E	550	990	80	1300	80	120
115-706C	115-706C-2R-2,142-146	706-E	670	810	70	1020	70	110
115-706C	115-706C-3R-1,83-85	706-E	580	1010	50	940	50	70
115-706C	115-706C-3R-2,45-47	706-E	490	750	90	1040	100	120
115-706C	115-706C-4R-1,78-80	706-E	610	1140	70	1830	0	120
115-706C	115-706C-4R-2,116-119	706-E	680	940	80	1120		140
115-706C	115-706C-5R-2,52-56	706-E	700	710	40	590	60	90
115-706C	115-706C-5R-2,135-137	706-E	860	1860	120	2470		90
115-706C	115-706C-5R-3,59-62	706-E	470	1030	110	1090	60	120
115-706C	115-706C-6R-1,45-50	706-E	590	260	50	1810	20	100
115-706C	115-706C-6R-2,17-19	706-E	490	1200	90	1160	0	80
115-706C	115-706C-8R-1,32-35	706-E	20	190	50	2090	140	140
115-706C	115-706C-8R-1,67-77	706-E	260	80	20	340	160	70
115-706C	115-706C-8R-2,44-48	706-E	560	280	0	520	40	70
115-706C	115-706C-8R-2,125-128	706-E	360	190	50	210	400	140
115-706C	115-706C-8R-3,45-48	706-E	420	870	100	560	40	100
115-706C	115-706C-9R-1,13-16	706-P	2930	3180	120	2410	1170	260
115-706C	115-706C-9R-1,23-29	706-P	2980	4270	90	2610	0	30
115-706C	115-706C-9R-2,36-39	706-P	1480	930	50	840	100	40
115-707C	115-707C-22R-1,94-98	707-P	3080	10660	380	2980	380	10
115-707C	115-707C-22R-2,40-42	707-P	3880	16890	510	3220	410	0
115-707C	115-707C-23R-1,123-127	707-P	2600	12370	450	4120	200	40
115-707C	115-707C-23R-4,32-34	707-P	4550	17180	480	4480	390	30
115-707C	115-707C-25R-1,39-43	707-E	6730	15360	500	4600	210	80
115-707C	115-707C-26R-2,126-128	707-E	4810	22540	620	4640	250	110
115-707C	115-707C-28R-4,133-136	707-E	7910	17130	490	5340	190	30
115-713A	115-713A-13R-1,63-69	713-P	5500	13550	510	9310	200	230
115-713A	115-713A-15R-4,7-13	713-P	3600	10450	400	7500	100	150
115-713A	115-713A-15R-4,143-146	713-E	2330	2670	280	4310	80	140
115-713A	115-713A-15R-5,90-94	713-E	3800	9730	350	7850	110	150
115-713A	115-713C-19R-1,27-29	713-P	3800	13080	500	9210	120	210
115-713A	115-713A-19R-3,12-15	713-P	3930	6570	310	7100	340	250
115-713A	115-713A-20R-3,51-54	713-P	3760	12310	580	9760	60	240
115-713A	115-713A-20R-3,112-115	713-P	3600	10500	560	9590	80	220
115-713A	115-713A-20R-3,137-139	713-P	3570	17970	460	21550	100	210
115-713A	115-713A-20R-5,127-130	713-P	3310	13200	780	8670	220	220
115-713A	115-713A-21R-3,55-59	713-P	4740	13170	580	13020	220	280
115-715A	115-715A-23R-3,91-95	715-UE	400	2200	40	8310	90	30
115-715A	115-715A-24R-2,30-38	715-UE	200	2660	20	12170	20	20
115-715A	115-715A-25R-3,25-34	715-UP	6060	8820	360	28550	430	410
115-715A	115-715A-25R-6,38-47	715-UP	14080	13170	390	32060	450	260
115-715A	115-715A-29R-1,33-38	715-UP	600	8430	330	20410	380	150
115-715A	115-715A-29R-1,113-119	715-LE	3740	7010	280	2540	140	20
115-715A	115-715A-29R-2,42-48	715-LP	1780	16530	700	7790	220	200
115-715A	115-715A-30R-1,52-61	715-LP	1340	3670	310	5260	200	120
115-715A	115-715A-30R-3,41-51	715-LP	890	2820	360	3210	250	130
115-715A	115-715A-30R-6,0-9	715-LP	1780	4770	280	4950	280	150
115-715A	115-715A-31R-2,89-94	715-LP	540	5390	240	4300	250	120