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More Indepth notes on Metals
Source: Bibliography
Source: Bibliography
Geological Rocks & Minerals
Designed by Nigel G Wilcox
Ref: L6
Photographs Courtesy :Rosanna & Calvin J Hamilton
Lava
Name: Surface of Pillow Lava from Loihi Volcano
Location: Hawaii National Park
Date: 2010
Location: Hawaii National Park
Date: 2010
Name: Surface of Pillow Lava from Loihi Volcano
Location: Hawaii National Park
Date: 2010
Location: Hawaii National Park
Date: 2010
Name: Olivine-Rich Lava Close Up
Location: Hawaii National Park
Date: 2010
Location: Hawaii National Park
Date: 2010
Caption: Much of Loihi's surface is covered with rounded "pillows," the form basalt lava commonly takes when erupted underwater. Parts of three pillows are contained in this specimen. High seawater pressure at the collection depth of 1180 meters retarded the release of gases from the lava, keeping the vesicles, or gas bubbles, small and few in number. The pillows' thin glassy veneer resulted when the hot lava erupted into cold seawater.
Caption: This lava specimen was part of a flow that entered the ocean, shattered, and released olivine to form a green sand beach on Mauna Loa's south coast, Hawaii. The heavier olivine particles separated from the other particles by the ocean currents. The green mineral olivine was concentrated to form the unusual green sand beach.
Name: Olivine-Rich Lava
Location: Hawaii National Park
Date: 2010
Location: Hawaii National Park
Date: 2010
Caption: This lava specimen was part of a flow that entered the ocean, shattered, and released olivine to form a green sand beach on Mauna Loa's south coast, Hawaii. The heavier olivine particles separated from the other particles by the ocean currents. The green mineral olivine was concentrated to form the unusual green sand beach.
Name: Olivine-Rich Lava
Location: Hawaii National Park
Date: 2008
Location: Hawaii National Park
Date: 2008
Caption: The foreground shows a good example of an A`a lava flow on the top of an existing Pahoehoe lava flow (visible in the background).
Name: Pahoehoe Lava Flow, Hawaii
Location: Hawaii National Park
Date: 2008
Location: Hawaii National Park
Date: 2008
Caption: This is a good example of the ropy nature of some pahoehoe lava.
Name: Pahoehoe Lava Flow
Location: Hawaii National Park
Date: 2008
Location: Hawaii National Park
Date: 2008
Caption: A few plants are just starting to take hold in this pahoehoe lava field.
Name: Pahoehoe Lava Flow
Location: Hawaii National Park
Date: 2008
Location: Hawaii National Park
Date: 2008
Name: Pahoehoe Lava Flow
Location: Hawaii National Park
Date: 2008
Location: Hawaii National Park
Date: 2008
Caption: Pahoehoe is a Hawaiian term for basaltic lava that has a smooth, hummocky, or ropy surface. A pahoehoe flow typically advances as a series of small lobes and toes that continually break out from a cooled crust. The surface texture of pahoehoe flows varies widely, displaying all kinds of bizarre shapes often referred to as lava sculpture`
Name: Pahoehoe Lava Flow
Location: Hawaii National Park
Date: 2008
Location: Hawaii National Park
Date: 2008
Copyright © All Rights Reserved by Nigel G Wilcox · · E-Mail: ngwilcox100@gmail.com
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