Late Eocene Crystal-Bearing Spherules: Two Layers or One?
Abstract
Late Eocene clinopyroxene ('CPX') spherules are studied, with a view to settling the question as to whether they represent two different events or a single one. The similarities in both composition and petrography between the late Eocene crystal-bearing spherules are found to be greater than the differences, and there appears to be a systematic change in composition and in amount of iridium excess from east to west, when all the sites that contain these crystal-bearing spherules are considered. It is therefore judged likely that the late Eocene crystal-bearing spherules all belong to a single event.
- Publication:
-
Meteoritics
- Pub Date:
- September 1987
- DOI:
- 10.1111/j.1945-5100.1987.tb00624.x
- Bibcode:
- 1987Metic..22..265G
- Keywords:
-
- Crystallography;
- Geochronology;
- Ocean Bottom;
- Petrography;
- Spherules;
- Stratigraphy;
- Caribbean Sea;
- Chemical Composition;
- Gulf Of Mexico;
- Indian Ocean;
- Iridium;
- Pacific Ocean;
- Lunar and Planetary Exploration;
- Interplanetary Dust