physical geology laboratory tuesday tom burbine tomburbine@astro umass edu n.
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Physical Geology Laboratory Tuesday Tom Burbine Course. Course Website: Textbook: Laboratory Manual in Physical Geology, 8 th Edition (2009) Busch You also will need a calculator that you will bring to class. Virtual office hours.

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physical geology laboratory tuesday tom burbine tomburbine@astro umass edu
Physical Geology LaboratoryTuesdayTom
  • Course Website:
  • Textbook:
    • Laboratory Manual in Physical Geology, 8th Edition (2009) Busch
    • You also will need a calculator that you will bring to class.
virtual office hours
Virtual office hours
  • You can IM me at tomburbine on AOL
Student: and who are u? lolStudent: u gotta answer cuz i asked first both timestomburbine: why r u Iming meStudent: cuz u added my sn for some reason so i wana know whytomburbine: sn?Student: screen name? Student: loltomburbine: no I didntStudent: ok..tomburbine: do u live in massachusetts?Student: do u?tomburbine: do u live in cambridge?Student: notomburbine: is it snowing?Student: yeatomburbine: do u have a xnga?Student: no joke who the f**k are ya?Student: yes i do live in MAtomburbine: i never heard of u until u Imed meStudent: then how the h**l did u know i lived in MA?
Student: and yes i do go to umasstomburbine: r u in astronomy 100Student: how do u know all this?tomburbine: because I am the professorStudent: OHHHHH OOOPS!tomburbine: i think u must have added meStudent: omg loltomburbine: and then forgot who I wasStudent: ya i didStudent: sorry for all that tomburbine: my name is my screen nametomburbine: seem familar nowStudent: didnt mean to use language but it happenedtomburbine: no problemtomburbine: funnyStudent: hehtomburbine: i actually dont know who u rStudent: good thing we got an exta 2 days for the hwtomburbine: yestomburbine: u can Im me anytimetomburbine: and Student: ill tell ya if u promiss not to fail metomburbine: I cant add my name to ur aimtomburbine: only u cantomburbine: i am fine not knowingStudent: okStudent: well i have to go ill cya on thursday. take caretomburbine: bye!
plate tectonics
Plate Tectonics
  • Plate Tectonics describes the large scale motions of Earth's lithosphere
continental drift hypothesis
Continental Drift Hypothesis
  • Alfred Wegener (1915) thought that all continents were part of a single supercontinent called Pangea
  • Pangea - One large supercontinent


Principles of Plate Tectonics

  • 1. The surface of the Earth is composed of lithospheric plates that are in constant motion.
  • The plates move in response to plastic flow in the athenosphere.
  • Motion in the asthenosphere is caused by convection driven by the Earth’s internal heat.
  • The internal heat comes from radioactive decay and the latent heat from the Earth’s formation.
plate tectonics1
Plate Tectonics
  • Earth has a thin rigid lithosphere that is underlain by a plastic asthenosphere
  • Seafloor crust is created along mid-ocean ridges where magma upwells from the mantle
  • Ocean basins are generally younger than continents
  • Seaflloor spreads until it encounters a trench and descends back into the mantle
Rocks can deform and flow
  • Easier for rock to deform and flow when it is warmer
  • Lithosphere is a planet’s outer layer of cool and relatively rigid rock
  • Asthenosphere is the region in the upper mantle characterized by low-density, semiplastic (or partially molten) rock material chemically similar to the overlying lithosphere
three types of plate tectonic boundaries
Three Types of Plate Tectonic Boundaries
  • Divergent – plates move apart, space is filled with molten magma
  • Convergent – plates collide
  • Transform – plates slide horizontally past each other
  • Magma – a mixture of molten rock, volatiles, and solids
  • Lava is magma that erupts on the surface
melting point
Melting Point
  • Melting point – temperature that crystals of a given mineral melt
  • All minerals have different melting points
  • Partial melting – part of a rock melts before another rock
geothermal gradient
Geothermal Gradient
  • Increasing temperature with depth
  • Pressure is force per unit area
  • Pressure increases as you go deeper in Earth because of the weight of the surrounding rock
  • Raising the confining pressure increases the melting point of the rock
  • Lowering the confining pressure lowers the melting point of a rock