What are lava coasts? What are lava coasts? A lava coast is any - - PowerPoint PPT Presentation

What are lava coasts? What are lava coasts?

• A lava coast is any beach or area of land

A lava coast is any beach or area of land bordering water that is covered or bordering water that is covered or composed of hardened lava. composed of hardened lava.

Formation of Lava Coasts Formation of Lava Coasts

• Lava coasts are formed when lava from an

Lava coasts are formed when lava from an active volcano erupts and cools along the active volcano erupts and cools along the shoreline. shoreline.

• Two ways this can happen:

Two ways this can happen:

– – Lava flows directly into sea Lava flows directly into sea – – Lava flows over existing shoreline Lava flows over existing shoreline

Famous Examples Famous Examples

• The islands of Hawaii have many

The islands of Hawaii have many actively erupting volcanoes and lava actively erupting volcanoes and lava coasts. coasts.

Photographic Examples Photographic Examples

Photographic Examples Photographic Examples

Species of the Coast Species of the Coast

• The lava is greater than 1100

The lava is greater than 1100°C °C (Explosions) (Explosions)

• Seawater in contact with lava immediately

Seawater in contact with lava immediately evaporates, sea is heated evaporates, sea is heated

• New land is formed, ground is encrusted

New land is formed, ground is encrusted

• Inhospitable conditions for life to survive.

Inhospitable conditions for life to survive.

Do volcanoes and global warming Do volcanoes and global warming mix? mix?

• A large scale volcanic eruption can

A large scale volcanic eruption can increase all 3 major greenhouse gas increase all 3 major greenhouse gas effects (ozone, greenhouse and haze) effects (ozone, greenhouse and haze)

• 4 major examples exist where large scale

4 major examples exist where large scale volcanic eruptions have volcanic eruptions have lowered lowered temperatures (including temperatures (including Krakatau Krakatau) )

• Not enough is known of volcanoes to

Not enough is known of volcanoes to distinguish a relationship between surface distinguish a relationship between surface temperatures and volcanic activity temperatures and volcanic activity

Works Cited Works Cited

• "Climate Effects of Volcanic Eruptions." Web. 23 Sept. 2009.

"Climate Effects of Volcanic Eruptions." Web. 23 Sept. 2009. < http:// < http:// www.geology.sdsu.edu/how_volcanoes_work/climate www.geology.sdsu.edu/how_volcanoes_work/climate_ _ effects.html effects.html> . > .

• De

De Groot Groot, Michael. "Coasts." , Michael. "Coasts." Discovery: Education Discovery: Education. 2009. Web. 23 . 2009. Web. 23

• Sept. 2009.
• Sept. 2009.

< http:// < http:// school.discoveryeducation.com/lessonplans/programs school.discoveryeducation.com/lessonplans/programs/ / coasts/> . coasts/> .

• Everett, Jim. "Black Lava Coast

Everett, Jim. "Black Lava Coast -

• Hawaii." 2003. Web.

Hawaii." 2003. Web. < http:// < http:// www.jamesgordongallery.com/pages/GalleryPages/bla www.jamesgordongallery.com/pages/GalleryPages/bla cklavacoast.html cklavacoast.html> . > .

• "Explosions at the Edge of an Active Lava Delta."

"Explosions at the Edge of an Active Lava Delta." USGS

• USGS. 2 June

. 2 June

• 2000. Web. 23 Sept. 2009.
• 2000. Web. 23 Sept. 2009.

< http:// < http:// hvo.wr.usgs.gov/hazards/oceanentry/deltaexplosions hvo.wr.usgs.gov/hazards/oceanentry/deltaexplosions/ / > . > .

Works Cited (cont.) Works Cited (cont.)

• Heckathorn

Heckathorn, John. "VIDEO: Where Big Island of Hawaii lava , John. "VIDEO: Where Big Island of Hawaii lava meets meets the sea." the sea." Hawaii Magazine Hawaii Magazine. 31 Aug. 2009. Web. . 31 Aug. 2009. Web. 23 Sept. 2009. 23 Sept. 2009. < http://www.hawaiimagazine.com/blogs/hawaii_today/2 < http://www.hawaiimagazine.com/blogs/hawaii_today/2 009/8/ 009/8/ 31/Kila 31/Kila uea_Big_Island_Lava_Boat_Video/2> . uea_Big_Island_Lava_Boat_Video/2> .

• Heliker

Heliker, C. "Photo Information." 18 May 2000. Web. 24 Sept. , C. "Photo Information." 18 May 2000. Web. 24 Sept. 2009. 2009. < http://hvo.wr.usgs.gov/gallery/kilauea/erupt/19990118 < http://hvo.wr.usgs.gov/gallery/kilauea/erupt/19990118-

• CH_caption.html

CH_caption.html> . > .

• "

"Kohala Kohala Coast." 2001. Web. 23 Sept. 2009. Coast." 2001. Web. 23 Sept. 2009. < http:// < http:// nebriaga.com/travel/bigisland/kohala.html nebriaga.com/travel/bigisland/kohala.html> . > .

• Seach

Seach, John. "Lava Delta and Lava Coast." , John. "Lava Delta and Lava Coast." Volcano Live Volcano Live. Web. . Web. 24 24 Sept. 2009. < http://

• Sept. 2009. < http:// www.volcanolive.com/delta.html

www.volcanolive.com/delta.html> . > .

• Web. 24 Sept. 2009. < http://
• Web. 24 Sept. 2009. < http:// www.terragalleria.com

www.terragalleria.com/black /black-

• white/pictures

white/pictures-

• subjects/hardened

subjects/hardened-

• lava/

lava/ picture.hardened picture.hardened-

• lava.havo3689.html> .

lava.havo3689.html> .