what is viscious blocky lava called ?
815221
andesitic lava is blocky
391569
Its actually lava rock. It helps hold heat, and stop the grease from causing large fires under your food.
418501
Pumice, obsidian, and basalt are all extrusive igneous rocks.so yea basalt is extrusive
689680
The opening at the top of a volcano is called a crater.\n\nA caldera is where a magma chamber once existed but collapsed during an eruption. Calderas are much larger than craters.
426456
http://www.geology.sdsu.edu/how_volcanoes_work/subducvolc_page.html\n\nstratovolcanoes\n\nbut on land your answer is probably going to be basaltic
430711
xenolith\n\nA piece of foriegn rock enclosed within an igneous rock. The foriegn rock is usually picked up from the walls surrounding the igneous rock and is frozen in place before it has a chance to melt. (=inclusion)
1065526
Since I answered your other question that was the same question I will add a little more for this question, especially since there is an answer here that has some misinformation. My other answer is at:http://answers.yahoo.com/question/;_ylt=AskJhoayfOFbNHQxqcJCy5gjzKIX?qid=20060616000345AAmblWi\n\nCaves don't all form in limestone, and not all caves form as a result of rainfall dissolving carbon dioxide in the soil and dissolving the rock. Some caves have formed in quartzite (Brazil) some in salt (Israel), and many caves form in gypsum. Caves created by lava flows are refered to as 'psuedokarst' because they do not form by dissolution at all, but simply by lava hardening to form a tube that contains flowing molten lava, and as the lava flow ends the tube empties leaving a cave. \n\nThere are other types of limestone caves as well. Some of the more spectacular limestone caves formed as a result of dissolution by sulphuric acid. The source of the sulphur was somewhat related to petroleum deposits and as these acid waters moved through limestone they dissolved huge caverns. Other types of limestone caves form around islands and deep underground where a chemical contrast between fresh water in the ground, and salt water mixing with this causes limestone to dissolve. These are called mixing zone caves, and in the case of islands are often called flank margin caves. \n\nBesides the spectacular decorative formations in caves (see my other answer) there are hydrologic features in caves that are actually more important than stalactites and stalagmites. Some caves form tunnel-like passages with smooth walls and fairly straight long passages. Some of these are called phreatic tubes. A phreatic tube formed while it was completely filled with water. Other cave passages are known as vadose passages. These types of cave passages formed while partially filled with air, and often flood intermittently. \n\nSome caves form as a deep vertical pit. In some settings these vertical pits are younger than the cave they connect to at the bottom and were formed by corrosive water flowing rapidly down the sides of a fracture or joint in the limestone, gradually enlarging it to become a vertical cave. \n\nHere's link to a major cave (Carlsbad) that formed from sulphuric acid:\nhttp://www.nps.gov/cave/geology.htm\n\nHere are some links to gypsum caves:\nhttp://www.showcaves.com/english/explain/Index/Gypsum.html\n\nHere is a quartzite cave in Venezuela;\nhttp://charlesbrewercarias.orientese.com/cuevas/cuevacharlesbrewer/cuevacharlesbrewering.htm\n\nA salt cave in Israel:\nhttp://www.geology-israel.co.il/WEB%20PAGE/GEO1-2-10=5.HTML\n\nHere is a world's longest and deepest list for caves:\nhttp://www-sop.inria.fr/agos/sis/DB/database.html
911288
the main ones are:\n\nconduit (pipe)\nchamber (magma storage)\ncaldera/vent
296278
Mauna Loa is a shield volcano, and as such it has comparatively gentle eruptions (as compared to stratovolcanoes, such as Mt. St. Helens.)  Shield volcanoes also produce high temperature low-viscosity basaltic lava, which contributes to the eruptions being gentle (except in the case of gas in the lava, which can cause fire fountains).\nMore information on shield volcanoes can be found here:\nhttp://en.wikipedia.org/wiki/Shield_volcano
793858
WATER: water in touch with hot rock (or magma) changes into steam... the kind of eruption is named a phreatomagmatic eruption.\n\nSILICA: at greater percent of silica in magma, stronger eruption the volvano makes....
574830
Here you go:\n\nhttp://volcano.und.edu/vwdocs/msh/
819640
The most common place to find shield volcanoes is over hotspots (such as Hawai'i, the Galapagos, etc.). This is because hotspot magmas are almost always hot basalts and therefore the erupted lavas have low viscosities. Low viscosity lavas cannot be piled up very steeply so they form shield volcanoes.\nSubduction-zone magmas are almost always cooler and they are higher in silica, both qualities that make the lavas more viscous. These magmas are able to pile up into steep domes and additionally make the volcanoes more explosive so that they have a greater percentage of ash. This makes the volcanoes steep strato-cones instead of shields. It isn't impossible to find shield volcanoes along lines of arc volcanoes (for example Masaya in Nicaragua), but it is rare.
139985
This from the USGS has all the answers you are looking for:\nhttp://volcanoes.usgs.gov/Products/Pglossary/ShieldVolcano.html\n"Volcanoes with broad, gentle slopes and built by the eruption of fluid basalt lava are called shield volcanoes. Basalt lava tends to build enormous, low-angle cones because it flows across the ground easily and can form lava tubes that enable lava to flow tens of kilometers from an erupting vent with very little cooling. The largest volcanoes on Earth are shield volcanoes. The name comes from a perceived resemblance to the shape of a warrior's shield."\nExamples of shield volcanoes are the volcanoes in the Hawaiian island chain, including Kilauea, Mauna Loa, Haleakala, etc.\nHope this is helpful :-)
763846
do a erupting volcano. \nAll you need is viniger and baking soda.  Red food coloring on viniger if you want it to be red lava.
834976
My guess is dissipation, hydrothermal, volcanic. Just guessing.
444024
for more details, look at http://volcano.und.nodak.edu/vwdocs/vwlessons/volcano_types/type_can.htm
34856
when a volano explodes it erupts lava.The lava is very hot but it still cant melt the volcano.The lava will cool off,forming a rock.Rocks that are formed when lava cools is called a Igneuse rock.It is very hard to melt a intire volcano.If the lava melts the volcano at all,only a little bit of the inside would be melted. the lava just dries up