maui is the hawaiian island that shows the most volcanic activity.
maui is the hawaiian island that shows the most volcanic activity.
which hawaiian island shows the most volcanic activity?
maui
Na
Na
there is evidence of a decline in volcanic activity over the past few million years. this decline in volcanic activity can be grouped into two phases. from eight to four million years ago, volcanism rates were higher than they are at present. magma production during this volcanic phase was most active from seven to five million years ago and was related to a period of rifting along the pacific and north american plate boundary. between four and three million years ago in the pliocene epoch, a pause in volcanic activity began to happen. the most recent magmatic phase ranging from two million years ago to present resulted from nearby areas of rifting during a period of compression between the pacific and north american plates. volcanism rates during this volcanic phase was most active from two to one million years ago with the construction of 25 volcanic zones then decreased one million years ago with the construction of 11 volcanic zones. to date, the most recent volcanic phase has produced of volcanic material whereas the first phase produced of volcanic material. even though the rate in volcanism throughout the northern cordilleran volcanic province has changed considerably, there is no correlation between the rate in magma production and the number of active volcanoes during any interval of time. the present day volcanism rate for the northern cordilleran volcanic province is considerably lower than the cascade volcanic arc and hawaiian volcanism rates. however, geologists are aware the temporal volcanic patterns known for the northern cordilleran volcanic province should be looked at carefully because volcanics that pre-date the last glacial period have been eroded by glacial ice and many of the volcanics have not been directly dated or have not been dated in significant detail to identify more individual temporal patterns. lava fountains can occur in the northern cordilleran volcanic province roughly every 100 years.
volcanic history of the northern cordilleran volcanic province