The topic of this article
may not meet Wikipedia's notability guideline for stand-alone lists.
Please help to demonstrate the notability of the topic by citing reliable secondary sources that are independent of the topic and provide significant coverage of it beyond a mere trivial mention. If notability cannot be shown, the article is likely to be merged, redirected, or deleted.
Find sources: "List of stratigraphic formations in the Philippines" – news · newspapers · books · scholar · JSTOR (October 2020) (Learn how and when to remove this message)