| Summary: | Ancient eruption centers can be determined by detecting the processes and products of ancient volcanic material pr, it is important to understand the elements of ancient volcanic material by studying the geology of the area in question, to prove the existence of an ancient volcanic eruption centers using geophysic with gravity method.
Supporting data in the field that are found are the following true:
1. Pyroclastic Fall. Which is a product of volcanic eruptions, an'd lapilli tuff Tuff. composition: tuff, felsik mineral,
2. Pyroclastic flow with Breccia, tuffaceous sandstone and tuff breccia.
3. Hot springs near Parangwedang Parangtritis
4. Igneous with scoria structure in Parang Kusumo, structured amigdaloida.
5. Which is the result of the eruption of lava I volcanic eruptions.
6. Pillow lava in the Berbah region that shows the flowing lava into the sea.
Theory of gravity Methods was proposed by Sir Isaac Newton (16.42-1727), states that the force of attraction between two particles is proportional to the multiplication of two masses and inversely proportional to the square of the dishnce between the two centers, so the farther apart the two objects the smaller the gravitational force and the two obJ 1cts when the distance is smaller then the gravitational force would also be great
|
|---|