Read Next
black shale: References & Edit History
More Articles On This Topic
Assorted References
- Carboniferous Period
- Cretaceous Period
- Jurassic Period
- paleoceanography
- Silurian Period
Article Contributors
Primary Contributors
Other Encyclopedia Britannica Contributors
Article History
Type | Description | Contributor | Date |
---|---|---|---|
Modified link of Web site: National Center for Biotechnology Information - PubMed Central - The origin of Cretaceous black shales: a change in the surface ocean ecosystem and its triggers. | Dec 05, 2018 | ||
Add new Web site: Academia - Black Shale, Grey Shale, Fossils and Glaciers: Anatomy of the Upper Ordovician-Silurian Succession in the Tazzeka Massif of Eastern Morocco. | Jun 15, 2016 | ||
Add new Web site: National Center for Biotechnology Information - PubMed Central - The origin of Cretaceous black shales: a change in the surface ocean ecosystem and its triggers. | Jun 15, 2016 | ||
Article added to new online database. | Jul 20, 1998 |
View Changes:
Article History
Revised:
By: