Citation:

dsdp.proc.59.108.1981

Name: (Table 1) Description of structures in cores at DSDP Holes 59-451, 59-448A and 59-447A
Published: 1981
License: https://creativecommons.org/licenses/by/3.0/

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Published: 1981 (exact date unknown) • DOI registered: 2013-11-19

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Abstract:

Fifteen lengths of Leg 59 cores (primarily from Hole 451 as well as from Holes 447A and 448A) exhibiting macroscopic faults were selected by Dr. R. B. Scott (Co-Chief Scientist, Leg 59) to help us initiate this petrofabric analysis. We proposed to (1) determine what dynamically useful deformation features might be associated with the faults, and (2) infer from these features as much as possible about the physical environment of the deformation (effective pressure, differential stress, temperature, and strain rate), the orientation and relatively magnitudes of the principal stresses at the time of deformation, and the degree of induration of the rocks at the time of deformation. The cores, mainly from Hole 451, had been slabbed on board ship with respect to the trace of bedding so that each cut surface contains the true bedding dip-direction. In general, the cores from Hole 451 are largely calcareous, lithic and vitric, brecciated tuffs, whereas those from Holes 447A and 448A are basalts or basalt breccias.

Project(s):

Deep Sea Drilling Project (DSDP)

Coverage:

Median Latitude: 17.456800 * Median Longitude: 137.146633 * South-bound Latitude: 16.341000 * West-bound Longitude: 133.289500 * North-bound Latitude: 18.014700 * East-bound Longitude: 143.276200

Date/Time Start: 1978-02-06T00:00:00 * Date/Time End: 1978-03-07T00:00:00

Minimum Elevation: -6022.0 m * Maximum Elevation: -2060.0 m

Event(s):

59-447A * Latitude: 18.014700 * Longitude: 133.289500 * Date/Time: 1978-02-06T00:00:00 * Elevation: -6022.0 m * Penetration: 296.5 m * Recovery: 154.5 m * Location: North Pacific/Philippine Sea/BASIN * Campaign: * Basis: Glomar Challenger * Method/Device: Drilling/drill rig (DRILL) * Comment: 36 cores; 287 m cored; 9.5 m drilled; 53.8 % recovery

59-448A * Latitude: 16.341000 * Longitude: 134.874200 * Date/Time: 1978-02-13T00:00:00 * Elevation: -3483.0 m * Penetration: 914 m * Recovery: 226.7 m * Location: North Pacific/Philippine Sea/RIDGE * Campaign: * Basis: Glomar Challenger * Method/Device: Drilling/drill rig (DRILL) * Comment: 66 cores; 704.5 m cored; 0 m drilled; 32.2 % recovery

59-451 * Latitude: 18.014700 * Longitude: 143.276200 * Date/Time: 1978-03-07T00:00:00 * Elevation: -2060.0 m * Penetration: 930.5 m * Recovery: 279 m * Location: North Pacific/RIDGE * Campaign: * Basis: Glomar Challenger * Method/Device: Drilling/drill rig (DRILL) * Comment: 95 cores; 870.5 m cored; 60 m drilled; 32 % recovery

Comment:

Empty cells mean no data.

Parameter(s):

#	Name	Short Name	Unit	Principal Investigator	Method/Device	Comment
1	Event label	Event
2	Latitude of event	Latitude
3	Longitude of event	Longitude
4	Elevation of event	Elevation	m
5	Sample code/label	Sample label		Friedman, M	DSDP/ODP/IODP sample designation
6	Comment	Comment		Friedman, M
7	Bed dip	Dip	deg	Friedman, M
8	Angle	Angle	deg	Friedman, M		Of beds to apparent fault dip. Except when phi = 90°, the dip-direction (bearing) of the fault and that of the bed are the same
9	Angle	Angle	deg	Friedman, M		Angle of fault to core axis
10	Displacement	DIS	mm	Friedman, M		Fault
11	Comment 2 (continued)	Comm 2		Friedman, M

License:

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

Size:

70 data points

Data

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

1 Event	2 Latitude	3 Longitude	4 Elevation [m]	5 Sample label	6 Comment	7 Dip [deg]	8 Angle [deg] (Of beds to apparent fault dip...)	9 Angle [deg] (Angle of fault to core axis)	10 DIS [mm] (Fault)	11 Comm 2
59-451	18.0147	143.2762	-2060	59-451-42-1,385-394.5		25	90	25	21	Fault bifurcates to phi = 0° and fault displacement = 3 mm
59-451	18.0147	143.2762	-2060	59-451-42-1,385-394.5		65	85	25	21	Faults bifurcate to phi = 5°, 30°, 40°, and rotate beds. Two other faults (phi = 30° and 60°) do not rotate beds
59-451	18.0147	143.2762	-2060	59-451-42-2,385-394.5		20	90	25	8	Two small faults parallel main one for which data are given
59-451	18.0147	143.2762	-2060	59-451-46-2,416.2-423.0		20	40	30		Three parallel faults occur
59-451	18.0147	143.2762	-2060	59-451-60-2,537.0-546.5		20	50	25	8	Fault helps to rotate adjacent blocks
59-451	18.0147	143.2762	-2060	59-451-63-5,565.5-575.0		20	65	15	13	Smaller conjugate faults developed that intersects main fault at 40°
59-451	18.0147	143.2762	-2060	59-451-64-2,575.5-584.5		20	80	23		Fault divides into three branches with phi = 15°, 40°, and 60°
59-451	18.0147	143.2762	-2060	59-451-68-2,613.0-622.5		20	65	0	42	Younger fault with phi = 70 ° offsets main fault
59-451	18.0147	143.2762	-2060	59-451-80-1,717.5-727		40	80	25	5	Single fault
59-448A	16.3410	134.8742	-3483	59-448A-37-1,698.5-708.0	Statements on deformation cannot be made, given that too few unequivocal faults were found in these samples					Possible shear zone in basalt breccia
59-448A	16.3410	134.8742	-3483	59-448A-46-1,768-774.5	Statements on deformation cannot be made, given that too few unequivocal faults were found in these samples					Fracture developed in basalt
59-448A	16.3410	134.8742	-3483	59-448A-51-3,801.5-810.5	Statements on deformation cannot be made, given that too few unequivocal faults were found in these samples					Possible shear zone in basalt
59-447A	18.0147	133.2895	-6022	59-447A-28-1,217-218	Statements on deformation cannot be made, given that too few unequivocal faults were found in these samples					Undeformed pillow basalt
59-447A	18.0147	133.2895	-6022	59-447A-29-4,230-231	Statements on deformation cannot be made, given that too few unequivocal faults were found in these samples					Undeformed pillow basalt
59-447A	18.0147	133.2895	-6022	59-447A-35-6,282.5-283.7	Statements on deformation cannot be made, given that too few unequivocal faults were found in these samples					Undeformed pillow basalt