Sunda Trench an underwater ridge, and much of the trench is at least partially filled with sediments. Mappings after the 2004 Indian Ocean earthquake of the plate boundary showed resemblance to suspension bridge cables, with peaks and sags, indicative of asperity and locked faults, instead of the traditional wedge shape expected. Some of the earliest exploration of the Trench occurred in the late 1950s when Robert Fisher, Research Geologist at the Scripps Institution of Oceanography, investigated the trench as part of a worldwide scientific field exploration of the world's ocean floor and sub-oceanic crustal-structure. Bomb-sounding, echo-train analysis and manometer were some of
Chapada Diamantina can be found. For this reason, Iraquara received the nickname "City of Caves". In 1985, the Chapada Diamantina National Park was created with its headquarters in Palmeiras. Chapada Diamantina is an erosional landform in the state of Bahia, Brazil. The Chapada Diamantina runs from North to South in the middle of Bahia and is an extension of the Espinhaço Range System. The rocks in the system date back to Pangaea and erosion of the formation began in the Precambrian eon. The Range System has an erosional outlier that exposes a contact, the Pai Inácio Anticline. The Pai Inácio Anticline is