Jakarta (DreamLandLibrary) - According to information obtained from the Department of Mining and Energy of West Nusa Tenggara Province, in the past Mount Rinjani was estimated to reach an altitude of ± 5,000 m above sea level with the location west of Mount Rinjani Now in the Prequarter era (> 1.8 Million Years which then) the Rinjani area is sedimentary rock sediment, which subsequently during the Plistocene (<1.8 Million Years ago) volcanic activity occurred, as a result of the occurrence of volcanic tectonic symptoms, can break out to the surface in the form of eruption activity or melt lava.
During the phase of the destruction of the volcano Mount Rinjani has formed a caldera that is mostly filled with water and formed a lake called Lake Segara Anak (± 2,010 m asl) which has a depth of ± 230 meters, crescent-shaped with an area of about 1,100 Ha. As a result of volcanic tectonics that continue in the middle of the caldera a new cone of volcanoes emerges called Gunung Baru Jari (± 2,376 m asl).
The history of the Mount Rinjani eruption began from 1847 to 2004, nine eruptions that ranged inside the caldera, while the crater of Mount Rinjani itself had never been recorded an eruption.
Source:
http://www.tnrinjani.net/tentangtngr-16-sejarahgunungrinjani.html
Photo: Special