AIM: Explain the rock cycle and the role of plate tectonics in
the rock cycle?
OBJ: Given notes and activity sheet SWBAT explain the
rock cycle and the role of plate tectonics in the rock cycle
with 70% accuracy
DN: Hand-in Metamorphic Lab write-up and MRL Lab Quiz
(Q:1-12, scantron);
Watch video https://www.youtube.com/watch?v=x7XH13sSQuM
ACT: Introduction to Rock Cycle (notes)
Text, read p.164-166; Work on Rock Cycle Activity Sheet
HW: Complete Rock Cycle Activity Sheet and Mineral &
Rocks Activity Sheet; Mineral & Rocks Exam, March 20.
The Rock Cycle
Forces deep inside Earth and at the surface
produce a slow cycle that builds, destroys and
changes the rocks in the crust.
Rock Cycle: is a series of processes on Earth’s
surface and in the crust and mantle that slowly
changes rocks from one kind to another.
Facts About The Rock Cycle
(1) Plate Tectonics and Rock Cycle interlocked/united
together.
(2) Any rock can make any other rock:
A Sedimentary Rock can produce a Igneous Rock,
another Sedimentary Rock or a Metamorphic Rock.
An Igneous Rock can produce another Igneous Rock,
a Sedimentary Rock or Metamorphic Rock.
A Metamorphic Rock can produce an Igneous Rock,
a Sedimentary Rock or another Metamorphic Rock.
(3) Sediments first before Sedimentary Rocks can be
made.
(4) Magma first before Igneous Rocks can be made.
Facts About The Rock Cycle
Rock Processes:
(1) Magma: Melting
Igneous Rocks: Solidification
(2) Sediments: Weathering, Erosion
Sedimentary Rocks: Deposition, Burial, Compaction,
Cementation
(3) Metamorphic Rock: heat & pressure (no melting)
A
Cycle
of
Many
Pathways
Igneous Rock: cooling & solidification of magma/lava.
Plate Tectonics: uplift
Sedimentary Rock: weathering, erosion (sediments), deposition,
burial/accumulation, compaction & cementation (lithification).
Plate Tectonics: plate collision, mountain-building, subduction
Metamorphic Rock: heat & pressure (and chemical reaction) at great depth of any
rock.
Plate Tectonics: melting subducted plate, rising magma plume, volcanoes form at
surface.
The Rock Cycle & Plate Tectonics
Igneous Rocks: Plate movements start the rock cycle by helping to form
magma, the source of igneous rocks. Where plates move apart and where
ocean/continental or continental/continental plates come together, magma
forms and cools forming igneous rocks.
The Rock Cycle & Plate Tectonics
Sedimentary & Metamorphic Rocks: The collision of continental
plates can result in uplift and mountain-building. The mountains eventually
are worn away leading to the formation of sedimentary rocks. In addition, this
collision can push rocks down deep into the mantle where heat and pressure
changes the rocks into metamorphic rocks.