{[ promptMessage ]}

Bookmark it

{[ promptMessage ]}

Lecture 7 - Mountain Building

Lecture 7 - Mountain Building - Lecture 7 Volcanoes...

Info iconThis preview shows pages 1–31. Sign up to view the full content.

View Full Document Right Arrow Icon
Lecture 7 Volcanoes, Mountain Building
Background image of page 1

Info iconThis preview has intentionally blurred sections. Sign up to view the full version.

View Full Document Right Arrow Icon
Video: Hawaiian Lava Flows
Background image of page 2
A student note taker is needed in this course to take  notes for a student with a disability. The note taker  will be paid a stipend for this assignment. Skills  needed are the ability to take accurate, legible, and  organized notes and a commitment to attend every  lecture. If interested, please contact Karishma  Patel or Tina Allen via email at  [email protected] as soon as possible.    Be sure to indicate the Professor's name, time, day  and course number in the subject line of the  announcement.  
Background image of page 3

Info iconThis preview has intentionally blurred sections. Sign up to view the full version.

View Full Document Right Arrow Icon
Types of Volcanoes
Background image of page 4
Size Comparison of the Three Volcano Types
Background image of page 5

Info iconThis preview has intentionally blurred sections. Sign up to view the full version.

View Full Document Right Arrow Icon
Shield Volcanoes Shield volcano Broad, slightly domed Primarily made of basaltic (fluid) lava Generally large size e.g., Mauna Loa in Hawaii  
Background image of page 6
Shield Volcanoes
Background image of page 7

Info iconThis preview has intentionally blurred sections. Sign up to view the full version.

View Full Document Right Arrow Icon
Video Hawaii: The Hot Spot Volcanoes
Background image of page 8
Cinder Cones Cinder cone Built from ejected lava fragments Steep slope angle Rather small size Frequently occur in groups   
Background image of page 9

Info iconThis preview has intentionally blurred sections. Sign up to view the full version.

View Full Document Right Arrow Icon
Cinder Cones
Background image of page 10
Stratovolcanoes (Composite Cone) Stratovolcano Most are adjacent to the Pacific Ocean (e.g., Mt. Rainier) Large size Interbedded lavas and pyroclastics Most violent type of activity
Background image of page 11

Info iconThis preview has intentionally blurred sections. Sign up to view the full version.

View Full Document Right Arrow Icon
Stratovolcano
Background image of page 12
Background image of page 13

Info iconThis preview has intentionally blurred sections. Sign up to view the full version.

View Full Document Right Arrow Icon
Background image of page 14
Stratovolcanoes Stratovolcano Often produce nuée ardente Fiery pyroclastic flow made of hot gases infused with ash Flows down sides of a volcano at speeds up to 200 km (125 miles) per hour May produce a lahar - volcanic mudflow   
Background image of page 15

Info iconThis preview has intentionally blurred sections. Sign up to view the full version.

View Full Document Right Arrow Icon
Nueé Ardente on Mt. St. Helens
Background image of page 16
Lahar Along the Flanks of Mt. St. Helens
Background image of page 17

Info iconThis preview has intentionally blurred sections. Sign up to view the full version.

View Full Document Right Arrow Icon
Other Volcanic Landforms Calderas Steep walled depression at the summit Formed by collapse Nearly circular Size exceeds one kilometer in diameter Fissure eruptions and lava plateaus Fluid basaltic lava extruded from crustal fractures called fissures e.g., Columbia Plateau
Background image of page 18
Caldera Formation 2) 3) 4) 1)
Background image of page 19

Info iconThis preview has intentionally blurred sections. Sign up to view the full version.

View Full Document Right Arrow Icon
Caldera Formation: Crater Lake
Background image of page 20
This is the end of the preview. Sign up to access the rest of the document.

{[ snackBarMessage ]}