Geological Terms
Term
Strike-Slip
Fault
Definition
-at transform plate boundaries
-two pieces of land moving in opposite
direction rubbing against each other
-not smooth earthquakes
Fault
-“Displacement” of lithospheric plates
(plates do not line up)
Ridge Push -at divergent plate boundaries (e.g. Mid
Atlantic Ridge)
magma rises pushes on and thin out
crust  crust cracks
 magma comes out
 magma wedges plates apart
new sea floor cools and sink away
from ridge, pushing old material ahead
of it
Slab Pull
-oceanic-continental collision
-subduction zone
-melting oceanic plate (slab) is pulling
the rest of the plate with it towards the
mantle
Volcanic
Belt
-chain of volcanoes on continent created
by convergent plates
e.g. Cascade volcanoes Mt. St. Helen,
Baker, Garibaldi
Island Arc
-chain of volcanic islands from oceanicoceanic collision
Mountains
-result of bulldozing extra plate materials
-oceanic-continental collision
(e.g. Rocky Mountains)
-continental-continental collision
(e.g. Himalayas)
Rifts
-A spreading ridge, but on land
-Divergent
Trenches
-Oceanic-oceanic/ oceanic-continental
collision (Subduction zone)
e.g. Mariana Trench (11km deep)between Japan and Indonesia
Paleoglacia -Long period when Earth is covered by
tion
Glacier
-“Ice Age”
Geological Terms
Science 10
Ms. Yu
Term
Definition
Strike-Slip
Fault
Fault
Ridge Push
-at divergent plate boundaries (e.g. Mid Atlantic Ridge)
Slab Pull
-oceanic-continental collision
-subduction zone
-melting oceanic plate (slab) is pulling the rest of the
plate with it towards the mantle
Volcanic Belt
Island Arc
-chain of volcanic islands from oceanic-oceanic collision
Mountains
-result of ___________________ extra plate materials
-oceanic-continental collision
(e.g. Rocky Mountains)
-continental-continental collision
(e.g. Himalayas)
Rifts
-A spreading ridge, but on land
-Divergent plate boundaries
Trenches
-Oceanic-oceanic/ oceanic-continental collision
(Subduction zone)
e.g. _________________________________ (11km
deep) between Japan and Indonesia
Paleoglaciation