SZI Forum

For most SZI events in the SZI Database 1.0, a nearby subduction zone is common, while a nearby passive margin is not. ➥ Is dynamic (tectonic & mantle) forcing more important to start a new subduction zone than a major structural heterogeneity in the plate system?

We currently cover 13 events that occurred since around 105 Ma: Lesser Antilles (Atlantic; 49±10 Ma) Cascadia (East Pacific; 48 ± 5 Ma) Sunda-Java (Indian Ocean; 50 ± 10 Ma) Aleutian (North Pacific; 53 ± 2 Ma) South Sandwich (South Atlantic; 34 ± 5 Ma) Ryukyu (West Pacific; 6 ± 1 Ma) Philippine (West Pacific; 93 Ma) New Hebrides-New Britain (West Pacific; 10 ± 2 Ma) Halmahera ( /East Molucca ; West Pacific; 15 ± 4 Ma) Tonga-Kermadec (West Pacific; 50 ± 5 Ma) Izu-Bonin-Mariana (West Pacific; 52 ± 0.5 Ma) Anatolia (Western Neotethys; 104 ± 1 Ma) Oman (Western Neotethys; 104 ± 1 Ma) Any SZI event you would like to see added?

It’s good to have you here! Feel free to share anything - New ideas or even published studies, suggestions, or whatever is on your mind. Here you can start discussions, connect with members and peers, reply to comments, and more. Make sure to use SZI-related terms that are understandable across the various Earth Science disciplines. To see which ones are best suited, see, for example, our Glossary page. Thanks for your contribution! Have something to say? Leave a comment or share a post!