| 1 | Basalt is also found on the seafloor surrounding most continents, as well as inland. | |
| 2 | Measured like that, each oxide forms about 10% of standard basalt. | |
| 3 | But under the water, volcanoes continued to erupt, sending up magma and forming mountains of basalt. | |
| 4 | The pure glacial waters of Oregon's Proxy Falls flows over the moss covered columnar basalt. | |
| 5 | The temperature of erupting basalt can be as hot as 1100 to 1200 degrees C, he notes. |