Citation:

0025-3227(73)90064-9

Name: (Table 1) Oxygen and carbon isotope compositions of altered carbonates from DSDP Hole 6-53 from the western Pacific Ocean
Creator: Thomas F Anderson
Published: 1973
License: https://creativecommons.org/licenses/by/3.0/

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Abstract:

In the lower part of DSDP core 53.0, partly recrystallized carbonate sediments and well recrystallized limestone breccias of Oligo-Miocene age are associated with altered volcanic flows, lithified tuffs, and tuff breccias, suggesting that carbonate alteration was the result of thermal metamorphism. However, the oxygen isotope compositions of these carbonates (-3.4 to +0.6 per mil rel. PDB) are not compatible with recrystallization and isotope exchange with sea water at high temperatures. Evaluating the effects of the composition of the water which exchanged with the carbonates and of carbonate-water isotope exchange in closed systems yields the following approximate maximum temperature of recrystallization: limestone breccias, 100°C; calcite veins rimming breccia clasts, 30°C; and unconsolidated sediments overlying the breccias, 20°C. Therefore, the volcanics at site 53.0 must have been emplaced into the primary carbonate sediments at relatively low temperatures. Subsequent carbonate alteration was probably a consequence of chemical changes in ambient pore waters resulting from the submarine weathering of volcanic material.

Project(s):

Deep Sea Drilling Project (DSDP)

Coverage:

Latitude: 18.033300 * Longitude: 141.191700

Date/Time Start: 1969-07-13T00:00:00 * Date/Time End: 1969-07-13T00:00:00

Minimum Elevation: -4629.0 m * Maximum Elevation: -4629.0 m

Event(s):

6-53 * Latitude: 18.033300 * Longitude: 141.191700 * Date/Time: 1969-07-13T00:00:00 * Elevation: -4629.0 m * Penetration: 200.6 m * Recovery: 12.2 m * Location: North Pacific/Philippine Sea/RIDGE * Campaign: * Basis: Glomar Challenger * Method/Device: Drilling/drill rig (DRILL) * Comment: 9 cores; 53.9 m cored; 0 m drilled; 22.6 % recovery

Parameter(s):

#	Name	Short Name	Unit	Principal Investigator	Method/Device	Comment
1	Sample code/label	Sample label		Anderson, Thomas F	DSDP/ODP/IODP sample designation
2	Description	Description		Anderson, Thomas F
3	δ18O	δ18O	‰	Anderson, Thomas F	Mass spectrometry	with respect to PDB
4	δ13C	δ13C	‰ PDB	Anderson, Thomas F	Mass spectrometry	with respect to PDB

License:

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

Size:

99 data points

Data

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

1 Sample label	2 Description	3 δ18O [‰]	4 δ13C [‰ PDB]
6-53-5-CC	Altered chalk ooze	0.22	2.04
6-53-5-CC	Altered chalk ooze	0.56	2.15
6-53-5-CC	Altered chalk ooze	0.53
6-53-5-CC	Brown marl	0.60	1.83
6-53-5-CC	Red-brown limestone	-1.90	2.17
6-53-5-CC	Red-brown limestone	-1.56	1.92
6-53-5-CC	Red-brown limestone	-0.55	2.04
6-53-6-2	Red-brown limestone breccia coarse-grained limestone clast	-1.51	2.20
6-53-6-2	Red-brown limestone breccia coarse-grained limestone clast	-2.31	2.00
6-53-6-2	Red-brown limestone breccia coarse-grained limestone clast	-3.27	2.26
6-53-6-2	Red-brown limestone breccia calcite vein rimming clast	-0.92	2.17
6-53-6-2	Red-brown limestone breccia calcite vein rimming clast	-3.02	2.04
6-53-6-2	Red-brown limestone breccia calcite vein rimming clast	-3.36	2.18
6-53-6-2	Red-brown limestone breccia fine-grained resedimented limestone	-2.44	2.31
6-53-6-2	Red-brown limestone breccia fine-grained resedimented limestone	-3.01	2.20
6-53-6-2	Red-brown limestone breccia fine-grained resedimented limestone	-3.08	2.33
6-53-8-CC	Red-brown limestone breccia coarse-grained limestone clast	-0.69	2.08
6-53-8-CC	Red-brown limestone breccia coarse-grained limestone clast	-2.16	1.90
6-53-8-CC	Red-brown limestone breccia coarse-grained limestone clast	-1.06	2.17
6-53-8-CC	Red-brown limestone breccia calcite vein rimming clast	-1.18	2.09
6-53-8-CC	Red-brown limestone breccia calcite vein rimming clast	-0.66	2.02
6-53-8-CC	Red-brown limestone breccia calcite vein rimming clast	-1.36	2.05
6-53-8-CC	Red-brown limestone small pieces of limestone	-2.26	1.85
6-53-8-CC	Red-brown limestone small pieces of limestone	-1.12	2.21
6-53-8-CC	Red-brown limestone calcite vein	-3.34	2.13