Ancient Lava: From Basic Earth Surfacing
The stone was originally a high-temperature the liquid lava from the eruption of volcanoes which freezes faster because the water, to form clumps resembling a pillow. Lava Bantal (pillow lava) were exposed by the flow of the Opak River is a natural phenomenon that is interesting and important. As evidence of the beginning of the formation of the first ancient volcano on Java Island.
Pillow lava formed by the eruption or lava (eruptions are relatively low with effusion rates) in direct contact with sea water. Freezing process that suddenly due to direct contact with sea water causes the formation of the mineral is not properly segregated. However, body pillow lava formed a similar geometry. This is where the people know as lava pillow (pillow lava).
Geological phenomenon in the village Jogotirto, District Berbah, Sleman, Yogyakarta is estimated age of 30 million years. We can also see a very thick volcanic ash deposition as evidence of strato volcano eruption in the past. In conclusion, pillows are not only very beautiful and distinctive to look at, but they can tell us something about the environment in which they formed. [rovitavare / jogjatoday]
photo by rovitavare for jogjatoday.com