/* DATA DESCRIPTION:
Citation:	Morad, S; Al-Aasm, Ihsan S (1997): (Table 1) Carbon, oxygen and strontium isotopic composition of the rhodochrosite nodules from DSDP Sites 503A and 503B [dataset]. PANGAEA, https://doi.org/10.1594/PANGAEA.701230, 
	Supplement to: Morad, S; Al-Aasm, IS (1997): Conditions of rhodochrosite-nodule formation in Neogene-Pleistocene deep-sea sediments: evidence from O, C and Sr isotopes. Sedimentary Geology, 114(1-4), 295-304, https://doi.org/10.1016/S0037-0738(97)00066-3
Abstract:	Calcic rhodochrosite occurs as nodules around burrows in late Neogene-early Pleistocene pelagic sediments of the Galapagos Ridge in the Guatemala Basin, eastern equatorial Pacific (DSDP Leg 68; Site 503). Growth was accomplished in the suboxic zone (d13C = -4.3 per mil to -1.3 per mil) at an estimated depth between ~30 and 70 cm beneath the seafloor. The rhodochrosites have 87Sr/86Sr ratios (0.708945–0.709073) that largely record the small-scale changes in seawater Sr-isotopic composition. The anomalous enrichment of the rhodochrosite in 18O isotopes (d18OPDB up to +6.4 per mil is attributed to the dissociation of gas hydrates.
Project(s):	Deep Sea Drilling Project (DSDP) (URI: https://www.deepseadrilling.org/)
Coverage:	LATITUDE: 4.050700 * LONGITUDE: -95.636800
	DATE/TIME START: 1979-09-06T00:00:00 * DATE/TIME END: 1979-09-06T00:00:00
	MINIMUM DEPTH, sediment/rock: 17.6 m * MAXIMUM DEPTH, sediment/rock: 164.6 m
Event(s):	68-503 * LATITUDE: 4.050700 * LONGITUDE: -95.636800 * DATE/TIME: 1979-09-06T00:00:00 * ELEVATION: -3672.0 m * PENETRATION: 4.4 m * RECOVERY: 4.8 m * LOCATION: North Pacific/FLANK * CAMPAIGN: Leg68 * BASIS: Glomar Challenger (URI: https://www-odp.tamu.edu:443/glomar.html) * METHOD/DEVICE: Drilling/drill rig (DRILL) * COMMENT: 1 cores; 4.4 m cored; 0 m drilled; 109.1 % recovery
Parameter(s):	DEPTH, sediment/rock [m] (Depth sed) * GEOCODE
	Sample code/label (Sample label) * PI: Morad, S (https://orcid.org/0000-0002-8214-0896) * METHOD/DEVICE: DSDP/ODP/IODP sample designation (URI: hdl:10013/epic.27914.d001)
	Sample type (Samp type) * PI: Morad, S (https://orcid.org/0000-0002-8214-0896)
	δ13C [‰ PDB] (δ13C) * PI: Morad, S (https://orcid.org/0000-0002-8214-0896) * METHOD/DEVICE: Mass spectrometer VG SIRA 12 * COMMENT: with respect to PDB
	δ18O [‰] (δ18O) * PI: Morad, S (https://orcid.org/0000-0002-8214-0896) * METHOD/DEVICE: Mass spectrometer VG SIRA 12 * COMMENT: with respect to PDB
	Strontium-87/Strontium-86 ratio (87Sr/86Sr) * PI: Morad, S (https://orcid.org/0000-0002-8214-0896) * METHOD/DEVICE: Mass spectrometer Finnigan MAT 261
	Age, dated [ka] (Age dated) * PI: Morad, S (https://orcid.org/0000-0002-8214-0896) * METHOD/DEVICE: Age, paleomagnetic
License:	Creative Commons Attribution 3.0 Unported (CC-BY-3.0) (URI: https://creativecommons.org/licenses/by/3.0/)
Size:	158 data points
*/
Depth sed [m]	Sample label	Samp type	δ13C [‰ PDB]	δ18O [‰]	87Sr/86Sr	Age dated [ka]
17.6	68-503B-05-2,17-20	core	-3.33	3.91	0.709111	1100
17.6	68-503B-05-2,17-20	middle	-3.02	4.05		
17.6	68-503B-05-2,17-20	rim	-3.17	5.16	0.709123	
29.8	68-503B-08-1,60-66	bulk	-2.87	5.88	0.709051	1700
37.8	68-503A-10-1,82-88	bulk	-4.05	5.22	0.709065	1900
37.8	68-503A-10-1,90-92	bulk	-3.55	5.83	0.709073	1900
51.4	68-503B-13-1,13-20	bulk	-3.24	6.01	0.709041	2600
51.9	68-503A-13-1,83-87	bulk	-2.51	5.22	0.709043	2600
52.2	68-503A-13-2,58-60	bulk	-2.82	4.85	0.709087	2600
65.1	68-503A-15-2,62-66	bulk	-2.82	5.66	0.709040	3100
80.4	68-503B-19-3,18-22	core	-3.93	3.64	0.709011	3600
80.4	68-503B-19-3,18-22	middle	-3.22	4.45		
80.4	68-503B-19-3,18-22	rim	-3.18	5.22		
86.5	68-503A-21-1,101-109	core	-3.27	5.96	0.709025	3800
86.5	68-503A-21-1,101-109	middle	-3.45	5.17	0.709032	
86.5	68-503A-21-1,101-109	rim	-3.47	5.29	0.709028	3800
86.5	68-503A-21-1,107-108	bulk	-3.76	4.85	0.709036	
112.1	68-503A-27-1,13-22	core	-2.28	1.40	0.709040	4300
112.1	68-503A-27-1,13-22	middle	-2.87	3.98	0.709044	
112.1	68-503A-27-1,13-22	middle	-2.53	5.29	0.709051	
112.1	68-503A-27-1,13-22	rim	-1.34	6.70	0.709048	
129.6	68-503A-31-1,17-19	bulk	-2.61	5.34	0.708961	5000
138.4	68-503A-33-1,28-30	bulk	-3.32	4.98	0.708992	5200
139.3	68-503A-33-1,106-114	core	-2.80	4.46	0.708955	5400
139.3	68-503A-33-1,106-114	middle	-1.95	6.43		
139.3	68-503A-33-1,106-114	rim	-3.27	3.65		
139.5	68-503A-33-1,127-130	bulk	-4.34	5.74	0.708976	5400
139.6	68-503A-33-1,138-140	bulk	-3.96	4.67	0.708988	5400
164.6	68-503A-39-1,3-5	bulk	-3.44	4.45	0.708945	5900