What would be a logical conclusion about speleothems/dripstone forming on the roof of a cave?…
|properties of rock or stone are widely |ecosystem. When there is an excess of |changes in the minerals that are inside the|…
|samples closely, you'll discover how flattened some of the grains in the rock are. The word "Metamorphism" comes from the Greek |…
Helens erupted. Shaken by an earthquake measuring 5.1 on the Richter scale, the north face of the tall symmetrical mountain collapsed in a massive rock debris avalanche. Quickly, the rock and ice slammed into Spirit Lake (on the northeast side of the mountain), crossed a ridge 1,300 feet high, and roared 14 miles down the Toutle River. The avalanche rapidly released the pressurized gases within the volcano. A tremendous lateral explosion ripped through the avalanche and developed into a “turbulent, stone-filled wind” that swept over ridges and toppled trees (Gifford Pinchot).…
Describe the characteristics of, and explain the formation of, minor forms of extrusive volcanic activity.…
Igneous rocks form when a molten rock, which is start from the bottom, it called magma, when magma cools and solidifies. This process is crystallization.…
from the earth's Mantle erupt on the earths crust and turn into lava caused by the…
Large crystals, that contained molten lava and change environments by moving into an area with lower temperatures, would cool quickly. A porphyritic texture is where large and small crystals are embedded; therefore, porphyry contains this texture. The matrix, around the large phenocrysts, is formed by the small crystals. Phonolite porphyry is the igneous rocks that form Devils Tower. In the Phonolite, the white phenocrysts are made up of feldspar.…
Scientist Ben Kennedy begun a very lengthy quest to solve the mystery of the shrinking pumice. This quest would eventually change the way scientists think about volcanoes-forever. One of the things (out of many) that he and his colleagues found out while on the road was that not only the rock was shrinking, the pores that make up the rock were shrinking as well. They think that this was due to the heating of the rock, and the molten rock's surface tension. What the scientist found was how some volcanoes function on the inside. In past years, volcanologists believed that flowing lava sinks back down and settles after an eruption, pressing on the magma below and crushing all of the bubbles, which makes pressure build up under the compacted lava. This leaves the lava sitting there...Until it explodes. Pow! This hints at why some volcanoes will go through cycles of flowing and explosive eruptions.…
“GENERAL PROLOGUE”: Using your knowledge about the “General Prologue,” answer the following questions. (2 pts. each)…
| |It's a truly fascinating subject, and this site attempts to frame the question of how to make a volcano within that larger context |…
His daughter is younger than all the other kids she hangs around with so he feels she isn’t ready for the types of influences these older friends will impose upon her.…
While in class, we have learned many things about the earth and its elements that are within it. One thing about the earth that we have learned about is volcanoes. The text describes a volcano as a hill or a mountain that is constructed by the extrusion of lava or rock fragments from a vent (Plummer, 2007).…
There were some moss covered stones that laid in clusters, as if someone piled them there on purpose. Some rocks were rough and sharp as broken glass, others, smooth as a new baby's skin. Red and gray they created a unique look to the forest. They ranged in size from the smallest pebble, to the largest bolder. They lay loose so we used precaution when we descended into the valley below.…
“ Mom what day are we moving, I still have a lot to pack”, Sheila asked while she had been packing her bags.…