![Santorini Island, Greece, spring 2019: Loumaravi - Ancient pillow breccia, suggesting the extrusion took place underwater. (Photo: Tom Pfeiffer) / VolcanoDiscovery Santorini Island, Greece, spring 2019: Loumaravi - Ancient pillow breccia, suggesting the extrusion took place underwater. (Photo: Tom Pfeiffer) / VolcanoDiscovery](https://volcanodiscovery.de/fileadmin/photos/santorini/2019/may/balos/santorini_k22521.jpg)
Santorini Island, Greece, spring 2019: Loumaravi - Ancient pillow breccia, suggesting the extrusion took place underwater. (Photo: Tom Pfeiffer) / VolcanoDiscovery
![Breccia is a kind of conglomerate, a clastic sedimentary rock, Stock Photo, Picture And Rights Managed Image. Pic. VD7-3501336 | agefotostock Breccia is a kind of conglomerate, a clastic sedimentary rock, Stock Photo, Picture And Rights Managed Image. Pic. VD7-3501336 | agefotostock](https://previews.agefotostock.com/previewimage/medibigoff/666855c15647770eff566ac2f6b5dc74/vd7-3501336.jpg)
Breccia is a kind of conglomerate, a clastic sedimentary rock, Stock Photo, Picture And Rights Managed Image. Pic. VD7-3501336 | agefotostock
![a). Pillow fragment breccia; matrix supported, clast poor, contains... | Download Scientific Diagram a). Pillow fragment breccia; matrix supported, clast poor, contains... | Download Scientific Diagram](https://www.researchgate.net/profile/Goran-Kniewald/publication/228847671/figure/fig15/AS:668842728624137@1536475941640/a-Pillow-fragment-breccia-matrix-supported-clast-poor-contains-spherical-lava-pipes.jpg)
a). Pillow fragment breccia; matrix supported, clast poor, contains... | Download Scientific Diagram
![Foreset beds in hyaloclastite breccia + pillow lava delta at the base... | Download Scientific Diagram Foreset beds in hyaloclastite breccia + pillow lava delta at the base... | Download Scientific Diagram](https://www.researchgate.net/profile/Barry-Hanan/publication/237530427/figure/fig2/AS:298769997418497@1448243726611/Foreset-beds-in-hyaloclastite-breccia-pillow-lava-delta-at-the-base-of-the-basalt-of.png)
Foreset beds in hyaloclastite breccia + pillow lava delta at the base... | Download Scientific Diagram
![Texas Bureau of Economic Geology: Down to Earth at Tuff Canyon, Big Bend National Park, Texas (On the Canyon Floor) Texas Bureau of Economic Geology: Down to Earth at Tuff Canyon, Big Bend National Park, Texas (On the Canyon Floor)](https://www.nps.gov/parkhistory/online_books/geology/publications/state/tx/2000-DE02/images/fig13.jpg)
Texas Bureau of Economic Geology: Down to Earth at Tuff Canyon, Big Bend National Park, Texas (On the Canyon Floor)
![Lithofacies and eruptive conditions of the southernmost volcanoes in the world (87° S) | SpringerLink Lithofacies and eruptive conditions of the southernmost volcanoes in the world (87° S) | SpringerLink](https://media.springernature.com/lw685/springer-static/image/art%3A10.1007%2Fs00445-021-01475-y/MediaObjects/445_2021_1475_Fig6_HTML.png)