Questions on volcano terminology

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  1. What is a "lahar" ?
  2. Can you tell me anything more about Nuees Ardentes ?
  3. What is your interpretation of the theory on the Deccan flood basalts?
  4. Where do you find a cinder cone volcano?
  5. Is there a certain number of years a volcano must be inactive to be labeled dormant?
  6. What is the crust?
  7. I'm looking for information relating to Archean volcanism.
  8. What is meant by phreatic?
  9. What is a volcano "neck"?
  10. What is a lava dome?
  11. What is a "drive-in volcano"?
  12. I'm looking for information relating to Archean volcanism?
  13. What is the definition of a hot-spot?
  14. What exactly is lava (and magma)?
  15. What is a cinder cone volcano?
  16. Is there any direct evidence for the existance of magma chambers?
  17. Need a six letter word meaning: pieces of ejected volcanic material.
  18. Why are volcanoes called volcanoes?
  19. What is a volcano
  20. We have talked about the three types of volcanoes, shield cone, composite cone and cinder cone. Which type is most commonly found on earth?
  21. How are volcanos first made?
  22. I don't understand what pyroclastics are. Could you tell me what they are and what they have to do with volcanoes.
  23. I don't understand what in the earth's crust causes volcanoic activeity.
  24. What action in the crust causes volcanic activity
  25. What does the word "subduction" have to do with volcanoes?
  26. What are Nuees ardentes? (sp) what causes them?
  27. I am writing a research paper on Plinian eruption columns; how high do they go, and what are the physical controls?
  28. Can you clarify these terms for me--or point me to the best sources that I could read.
  29. Why is lava called magma underground and it is called lava when it is on the surface of the earth?
  30. Why is lava called magma underground?
  31. How do you know what is inside a volcano like a magma chamber?
  32. Is there anyway you can tell me something about Obsidians?
  33. What is rock wool?
  34. What are the different parts of a volcano?
  35. What are plate tectonics and how do they relate to volcanoes?
  36. There is a good map of plate techtonics and volcanoes at http://denali.gsfc.nasa.gov/new.html
  37. What is a pyroclastic flow?
  38. What is a Lave Cone ?
  39. I need some material on Andesitic Volcanoes (what/where are they)and the evidence they have given us in regards to the Plate Tectonic model.
  40. WHAT DOES VEI MEAN OR STAND FOR?
  41. What is a rift zone, like the ones found in Hawaii?
  42. What is the difference,if any, between a shield volcano and a volcanic shield mountain?
  43. What is C-STATUS? I noticed this in the note on Long Valley Caldera.
  44. What is the definition of "lahar"?
  45. What are the different parts of a volcano and where are theylocated on a volcano?
  46. tell me what you call the centre of a volacno? or the correct name of a plato?
  47. What is the difference between the most common types of volcanos?
  48. I have an SEM of fractured pumice fromMt. St. Helens mag x3500 showing the many tiny air holes. I need helpinterpreting the photo. How were these air holes formed? What is theoriginal source of the rock? (How deep in the earth?)
  49. I would like to know what typical radionuclides (radioactive compounds andisotopes) are emitted from a volcanic eruption of ash (specifically, the recenteruption in Iceland)
  50. I need to have a comprehensive definition of the two following terms please:
    1. Phreatic
    2. Fiamme
  51. I am doing a science dictionary for school and I haven't been able to find themeanings of these two words, sima and vulcanism. If you could help me I wouldreally appreciate it.
  52. What are grantic volcanoes?
  53. What is a "sima" and a "sial"?
  54. What exactly is magma?
  55. Black Tusk is very black in the crater in its cone are you sure it is extinct?
  56. I am a Remote Sensing Geophysicist with the British Geological Survey. A member of the public asked if I knew whether the electrical conductivity of molten lava has ever been measured in situ. I'm afraid that my literature searches came up with nothing.
  57. I watched part of a National Geographic special on volcanos. I noticed that in the eruption of Mt. Pinatubo they had different 'evacuation levels', level 4 being 'total evacuation'. Can you tell me what each level is and how they determine them?
  58. What does "epiclastic" mean?
  59. What does Co-ignimbrite mean?
  60. What canyou tell me about Hot Spots???
  61. Can you explain in simple terms what a hot spot volcanoe is
  62. What are the origin of geodes (thundereggs)?
  63. What does the term "hybrid swarms' mean in relation to volcanic activity.
  64. What does Soufriere mean in English?
  65. I'm stumped trying to remember the geologic term for lithified nuee bill skipp
  66. Where is the Ring of Fire?
  67. shield volcanoes and why they have such violent eruptions.
  68. What term is commonly used for the belt of active volcanos that surrounds much of the Pacific Ocean.
  69. Can a volcano ever implode?
  70. What are the Phlegreaen Fields?
  71. Is there any maps or information you could give me about the Pacific Ring of Fire?
  72. I like to know something about some words I have to define:
  73. I am having a difficult time figuring out the formulas for stress, strain rate, viscosity and lithostatic
  74. WHAT IS THE pLINIAN ERUPTION?
  75. I've read (I can't remember where) that the Siberian traps ejected enough lava to cover the earth in a layer 10 feet thick.
  76. Could you please tell me the names & locations of the following types of volcanoes:
  77. I would like to know the definitions for the following terms.
  78. What does Mauni loa mean and what is it?
  79. My name is Cassie and I need to know the definition of volcanic eruption
  80. What is a nuees ardentes?
  81. can you tell me more about intusive and extrusive rocks?
  82. What is a volcanic provence?
  83. Mount St. Helens is a stratovolcano.
  84. What is the difference between lava and magma?
  85. What are the differences among hybrid earthquake, hybrid earthquake
  86. Why are volcanoes called "Windows into the Earth's Interior?
  87. What are pyroclastic flows and how fast do they flow?
  88. What type of volcano is El Chicon,mexico?
  89. I have a student doing a report on Kilauea and she has been unable to find out the significance/meaning of the name.
  90. Vesuvius is a COMPOSITE VOLCANO... What does this mean.
  91. What is the difference between a volcanic pipe and a volcanic dike?
  92. In an article about hot spots from 1976 aulacogens are mentioned
  93. what is Plenian eruption?
  94. I need help defining the following terms:
  95. what isthe exact definition of "volcano" ?
  96. Can you supply a general definition for a volcano?
  97. I would like to know a definition of the words:
  98. What are andisols
  99. How do you define "volcanic ash"?
  100. What is a "hybrid Swarm"?
  101. I need to know about volcanic ashes and volcanic bombs.
  102. Are a composite cone and a stratacone volcano the same thing? Because aren't they both very tall?
  103. What is a "parasitic cone"? How are they formed? I've seen them on maps of Mt. Kilimanjaro, but have never heard of them.
  104. What is a volcano?
  105. I need information about dormant, extinct, and active volcanes.
  106. Is a super plume bascially a slow rising magma that allows heat to escape from the Earth's core or is it a type of volcanic eruption?
  107. What is pneumonoultramicroscopicvolcanoniosis?
  108. What is the difference between phreatic and phreatomagmatic eruptions?
  109. What is a volcano belt?
  110. For the measurement of earthquakes we have the Richter Scale, is there such a device for the measuring of the power of volcanos? If so, is it exponential in it's gradients like the Richter Scale. If Mt. Rainer were ever to erupt, what is your best estimation as to it's power on such a scale?
  111. Where did the terms aa and pahoehoe come from and how do you pronounce them?
  112. what is magma. i would like a defenition please
  113. What are pyroclastic flows and how fast do they flow?
  114. What is a "subaerial" volcano?
  115. WHAT IS A TSUNAMI? AND HOW DID THAT NAME ARRIVE?
  116. How is VEI defined?
  117. What is ground surge?
  118. What is a composite volcano?
  119. What is a hot spring?
  120. What is a volcano?
  121. What is the differences between a shild volcano , a cinder cone volcano and a composite cone volcano.What is the difference between a extrusive rock and a intrusive rock.
  122. What is the differences between a shild volcano , a cinder cone volcano and a composite cone volcano.What is the difference between a extrusive rock and a intrusive rock.
  123. Please help me with the definitions of the words rilles and batholith?
  124. I just asked you the definition of two words and forgot to ask about a couple more. I am wondering what a marine mountain, block/fault mountain and a dome mountain are
  125. I need a glossary related to volcanoes. Where can I find this information?
  126. What is a pyroclastic flow?
  127. What is the difference among a shield volcano, a maar, and a stratovolcano?
  128. I'm curious as to was the difference between Komatiites and Komatiitic Basalt is. Do they both result from the same magma body and why are they all Archean and no more recent ones?
  129. What is the Moho?
  130. How can you tell the difference among lahar, debris flow and avalanches?
  131. What is the geothermal energy of a volcano?
  132. What type of volcano has pyroclastic eruptions?
  133. What type of volcanoes erupt both lava flows and pyroclastic flows?
  134. How are igneous rocks classified?
  135. What are the different types of lava?
  136. What is the name of the black glass produced by volcanoes?
  137. Who made up the word VOLCANO?
  138. What does ash cone, composite cone and sill mean?
  139. What are underwater volcanoes called?
  140. What is "flood basalt"?
  141. Can you please give me an explanation for the term "Fissure eruptions"?
  142. What is the rock called that is made from lava?
  143. What is a bomb, as it pertains to volcanic explotions?
  144. What is a volcanic mountain?
  145. What rocks come out of volcanoes?
  146. What is a sill?
  147. What is ash?
  148. What does it mean that a volcano is dormant?
  149. What is the difference among an active, dormant and extinct volcano?
  150. What is a hummock?
  151. What is tephra?
  152. I heard that Menan Buttes are tuff cones, but what are tuff cones?
  153. What is plutonite or plutons?
  154. What is a subaerial volcano?
  155. What is a collapse center of a submarine volcano?
  156. What does the name Vesuvius mean?
  157. What is an active, dormant and extinct volcano?
  158. What is the definition of plume height?
  159. What is pyroclastic flow?
  160. How does a "smoke ring" form around a volcano?
  161. What is an epicenter?
  162. What is the difference between magma and lava?
  163. What are fumaroles?
  164. What are plate tectonics?
  165. What is a guyot?
  166. What is spatter agglutinate?
  167. What is low-grade ignimbrite and high-grade ignimbrite?
  168. What is a collapsed volcano called?
  169. What is a plume?
  170. What is a plenian eruption?
  171. What is co-ognimbrite?
  172. What does caldera mean?
  173. What is a Hot spot?
  174. What are hot springs?
  175. What is a dike?
  176. What is a lahar?
  177. What does scoria mean?
  178. Does sulfur really change water into acid?
  179. How is a volcanic hazard mitigated?
  180. What does a`a mean?
  181. How is a volcano defined as being active, dormant, or extinct?
  182. What is meant by the term the plates stick?
  183. In many reports of Montserrat Volcano Observatory, I have read about Hybrid Earthquakes. What does that mean?
  184. Why is magma called lava after it reaches the surface?
  185. What is the moho made from?
  186. Could you please explain what a "thermocouple" is and how it works without melting while measeuring the temperature of lava?
  187. Could you please explain the term "scarp" for me?
  188. How do you know if a volcano is active or inactive?
  189. What is a plinian eruption?
  190. Why is a lahar dangerous?
  191. What is the difference between a pyroclastic flow and a lava flow
  192. What is phreatic eruption?
  193. What is a pyroclastic flow?
  194. Could you provide me with information about tsunamis?
  195. What exactly are hotspots?
  196. What is a landslide?
  197. What is a dormant volcano?
  198. What is the chemical composition of olivine at Green Sand Beach in Hawaii?
  199. What happens at subduction zones?
  200. What is the easiest explanation for tephra?
  201. What is the difference between intrusive and extrusive volcanism?
  202. What is a volcanic plug?
  203. What is a lava lake?
  204. What is a caldera?
  205. What is a volcanic cone?
  206. What does VEI stand for?
  207. What is the deepest part of the inside of a volcano called?
  208. What do you mean by "volcanic tuff"?
  209. What is the Mid-Ocean Ridge?

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