Citation:

S0146-6380(97)00010-7

Name: Vitrinite reflectance of ODP Leg 139 samples (Table 1)
Published: 2000
License: https://creativecommons.org/licenses/by/3.0/

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Abstract:

Isolated kerogens from four sites in the Middle Valley hydrothermal region of the Juan de Fuca Ridge (Ocean Drilling Project (ODP) Leg 139) were analysed by electron paramagnetic resonance (EPR) spectroscopy. Measurements of peak width, spin density and power saturation for site 857 kerogens, which increased regularly in maturity downhole, show correlation with vitrinite reflectance values from 0.61 to 2.5%, indicating the start of the oil window at depths from 200 to 400 m. Spin density increases to 1.56 * 10**17 spins per gram and peak width decreases to 3.45 G (gauss) with increasing depth. The tendency to power saturate also decreases with increasing maturity and increasing vitrinite reflectance within the oil window. These trends are consistent with a model in which exchange processes are occurring and cause changes in the EPR behavior of samples from this site. Sediments from other Middle Valley sites, 855, 856 and 858 contain large quantities of pyrite with Mn2+ impurities which interact with the carbon radical to distort the EPR measurements.

Project(s):

Ocean Drilling Program (ODP)

Coverage:

Median Latitude: 48.446900 * Median Longitude: -128.695889 * South-bound Latitude: 48.435000 * West-bound Longitude: -128.713000 * North-bound Latitude: 48.456900 * East-bound Longitude: -128.638000

Date/Time Start: 1991-07-16T11:30:00 * Date/Time End: 1991-08-15T08:00:00

Minimum DEPTH, sediment/rock: 0.02 m * Maximum DEPTH, sediment/rock: 433.07 m

Event(s):

139-855C * Latitude: 48.442900 * Longitude: -128.638000 * Date/Time Start: 1991-07-16T11:30:00 * Date/Time End: 1991-07-17T12:15:00 * Elevation: -2455.0 m * Penetration: 111 m * Recovery: 60.77 m * Location: North Pacific Ocean * Campaign: * Basis: Joides Resolution * Method/Device: Drilling/drill rig (DRILL) * Comment: 13 cores; 111 m cored; 0 m drilled; 54.7 % recovery

139-856A * Latitude: 48.436700 * Longitude: -128.680000 * Date/Time Start: 1991-07-18T08:30:00 * Date/Time End: 1991-07-19T09:30:00 * Elevation: -2406.0 m * Penetration: 115.7 m * Recovery: 102.04 m * Location: North Pacific Ocean * Campaign: * Basis: Joides Resolution * Method/Device: Drilling/drill rig (DRILL) * Comment: 14 cores; 115.7 m cored; 0 m drilled; 88.2 % recovery

139-856B * Latitude: 48.435000 * Longitude: -128.680000 * Date/Time Start: 1991-07-19T09:30:00 * Date/Time End: 1991-07-20T11:15:00 * Elevation: -2431.0 m * Penetration: 121.7 m * Recovery: 108.33 m * Location: North Pacific Ocean * Campaign: * Basis: Joides Resolution * Method/Device: Drilling/drill rig (DRILL) * Comment: 16 cores; 121.7 m cored; 0 m drilled; 89 % recovery

Parameter(s):

#	Name	Short Name	Unit	Principal Investigator	Method/Device	Comment
1	Event label	Event
2	Sample code/label	Sample label		Dickneider, Trudy A	DSDP/ODP/IODP sample designation
3	DEPTH, sediment/rock	Depth sed	m			Geocode
4	Kerogen, Ro	Ro		Dickneider, Trudy A
5	Kerogen, Ro	Ro		Dickneider, Trudy A		Ro ETAI Ro equivalent from thermal alteration index
6	Kerogen, Ro	Ro		Dickneider, Trudy A		composite
7	Peak width	Hpp	Gs	Dickneider, Trudy A
8	Spin density	Ns	10¹⁷ spins/g	Dickneider, Trudy A
9	-	-		Dickneider, Trudy A		Ps-50 (power saturation)

License:

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

Size:

224 data points

Data

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

1 Event	2 Sample label	3 Depth sed [m]	4 Ro	5 Ro (Ro ETAI Ro equivalent from th...)	6 Ro (composite)	7 Hpp [Gs]	8 Ns [10¹⁷ spins/g]	9 - (Ps-50 (power saturation))
139-855C	139-855C-1R-2,141-144	2.91	0.38	0.20	0.20	4.23	0.03210	0.59
139-855C	139-855C-11R-2,10-13	96.20	0.43	0.38	0.38	4.94	0.00931	0.60
139-856A	139-856A-13X-2,143-149	108.23	2.11	>2.58	2.11	3.95	0.03390	0.77
139-856B	139-856C-11X-1,102-108	74.32	2.40	>2.58	2.40	6.22	0.01620	1.09
139-857A	139-857A-1H-2,95-109	4.35	0.26	0.20	0.20	4.90	0.05190	0.50
139-857A	139-857A-4H-4,137-140	27.77	0.38	0.20	0.20	3.74	0.02510	0.64
139-857A	139-857A-6H-4,137-140	46.77	0.37	0.38	0.38	4.00	0.04160	0.79
139-857A	139-857A-9H-1,110-116	70.50	0.41	0.45	0.45	3.90	0.02870	0.61
139-857C	139-857C-6R-2,62-64	88.32	0.62	0.38	0.38	4.61	0.02710	0.65
139-857C	139-857C-17R-2,126-130	194.66	0.67	0.61	0.67	4.69	0.33200	0.55
139-857C	139-857C-21R-2,20-25	232.30	0.72	0.78	0.72	5.05	0.33900	0.52
139-857C	139-857C-23R-1,5-8	249.95	0.75		0.75	5.16	0.43800	0.62
139-857C	139-857C-24R-1,71-74	259.91	0.61	0.61	0.61	5.57	0.54900	0.54
139-857C	139-857C-25R-1,89-93	269.69	0.95	0.38	0.95	5.37	0.59500	0.65
139-857C	139-857C-28R-2,27-30	295.57	1.10	0.98	1.10	5.10	0.62900	0.70
139-857C	139-857C-31R-1,111-115	323.81	1.13	0.98	1.13	5.07	1.03000	0.74
139-857C	139-857C-34R-2,76-79	338.76		1.71	1.70	4.97	1.56000	0.83
139-857C	139-857C-35R-3,67-71	344.97		1.71	1.70	4.76	0.91500	0.97
139-857C	139-857C-37R-1,67-69	351.47				4.54	0.82200	0.81
139-857C	139-857C-41R-3,66-71	378.56	1.70		1.78	4.54	0.10700	0.90
139-857C	139-857C-44R-2,117-121	392.40				4.19	1.14000	0.81
139-857C	139-857C-51R-1,100-103	424.40		>2.58	>2.48	3.27	1.28000	1.07
139-857C	139-857C-53R-1,27-30	433.07	>2.48	>2.58	>2.48	3.45	1.18000	0.94
139-858A	139-858A-1H-2,50-63	2.00	0.40	0.30	0.30	4.80	0.12200	0.51
139-858A	139-858A-2H-6,40-43	10.30	0.50	0.38	0.38	5.46	0.40500	0.55
139-858A	139-858A-4H-4,137-140	27.27	1.00	0.50	1.00	2.59	0.02730	0.61
139-858A	139-858A-6H-3,105-107	44.54	1.24	1.16	1.24	5.14	0.12200	0.73
139-858A	139-858A-29X-1,28-29	246.18	>2.60	>2.58	>2.60	3.22	0.00760
139-858B	139-858B-1H-4,147-150	5.97	0.50	0.45	0.45	5.70	0.03810	0.65
139-858B	139-858B-H5-3,137-140	28.27	>2.58	>2.58	>2.58		0.00778
139-858C	139-858C-1H-1,2-17	0.02	0.45	0.30	0.30	4.80	0.01150	0.51
139-858C	139-858C-2H-1,1-15	3.51	0.49	0.38	0.38	5.13	0.00106	0.42
139-858C	139-858C-5H-1,150-52	25.00	1.00	1.00	1.00	4.09	0.49400	0.77
139-858D	139-858D-1H-l,137-141	1.37	0.50	0.30	0.30	4.76	0.09360	0.45