Most deep focus earthquakes are associated with either:
a: mid-ocean ridges
or
b: deep-ocean trenches
2007-02-12 07:17:46 · 3 answers · asked by Contradicted_by_All 1 in Science & Mathematics ➔ Earth Sciences & Geology
definitely deep-ocean trenches. Think about lpate tectonics for a second. in a mid-ocean ridge, the plates are moving away from each other, called "spreading". This doesn't cause any friction on the Earth, therefore minimizing the amount of earthquakes. Most, if not all, trenches are formed at a oceanic subduction zone. This is where one plate is moving towards and underneath another plate- causing quite a lot of friction and therefore, earthquakes. (usually there will also be shield and/or hot spot volcanoes nearby as well)
2007-02-12 08:39:37 · answer #1 · answered by dreamoutloud2 3 · 0⤊ 1⤋
probably the ridges.
the trench is just a big hole whereas the ridges rise up where the techtonic plates meet.
and i love any excuse to use the words "plate techtonics" :P
2007-02-12 07:25:26 · answer #2 · answered by Icarus 6 · 0⤊ 1⤋
That one's tough. I don't know about oceanography, but I know a little about earthquakes. I only know of earthquakes on land, but I don't know them on sea. Maybe a, because earthquakes would be small in a trench. ????????????????????????????????????????????????????????????????????????????????????????????????????????????
2007-02-12 07:25:03 · answer #3 · answered by zxcvbnm6 3 · 0⤊ 1⤋