Q. What elements of identification does the CARICOM passport contain?
It appears to me that your answer varies by country. Each country still issues their own passport, but generally with the CARICOM border-crossing benefit attached. This page is a little bit outdated, but has very general info about that: http://www.criti.info/sharing_the_vision/General%20CARICOM%20Info/history3.htm
Otherwise I would simply search Google for "[name of country] passport application" to see what each country requires on their passport forms. I did see that Jamaica's does have biometrics, for example, as does Trinidad and Tobago's. It does not appear that there is anything specific on the applications for CARICOM, but it does seems to conform to international standards. CARICOM passports also seem to be the standard-issue passports in participating countries (sources are these same websites.)
If you have further questions, feel free to contact the library at firstname.lastname@example.org; I will be away at a conference starting tomorrow through Thursday of next week. I hope this helps!
Bibliographer/Librarian for Latin American Studies and Iberian Languages