|
yazan
Nov 15, 2014 12:17:41 GMT
Post by yazanm5 on Nov 15, 2014 12:17:41 GMT
There are two types of basalt lavas. Pillow lavas and pahoehoe lavas. Pillow lavas are volumetrically the most abundant type because they are erupted at mid-ocean ridges and because they make up the submarine portion of seamounts and large intraplate volcanoes, like the Hawaii-Emperor seamount chain. Pahoehoe lava is characterized by a smooth, billowy, or ropy surface. Pahoehoe flows tend to be relatively thin, from a few inches to a few feet thick. In map-view the flows tend to be narrow and elongate. These are the types of lavas that I know.
|
|