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| Main Authors: | , |
|---|---|
| Format: | Dataset Open Access |
| Language: | en |
| Published: |
PANGAEA
1985
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| Subjects: | |
| Online Access: | https://doi.org/10.1594/PANGAEA.806529 |
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Table of Contents:
- Interpillow limestones were recovered from numerous cores of Leg 82. Limestones from Core 562-1, south of the Hayes Fracture Zone, display small-scale cross laminations composed of planktonic foraminiferal tests alternating with micrite. In nonlaminated portions of the limestones, graded bedding is evident. Foraminiferal species identified from thin sections date the limestones of Core 562-1 as early middle Miocene, approximately 16 Ma. This age corresponds with that determined for the lowermost sediments recovered at Site 562, which lie within 9 m of the interpillow limestones. The presence of undisturbed structures in the upper limestones may be the result of sediment void-infilling between pillow basalts, as opposed to a post-depositional intrusion of basalts into the carbonate sediments. Thus, the basalts have a minimum age of 16 Ma.