Volcanos and earthquakes Differences between shield volcano, cinder cone, and st
ID: 295634 • Letter: V
Question
Volcanos and earthquakes Differences between shield volcano, cinder cone, and stratovolcano (composition eruptive style, shape, hazards, etc.) Volcanic land forms-volcanic neck, flood basalts, caldera, lava tube, etc. Intrusive igneous land forms-tabular v. massive, concordant v. discordant .What type of plate boundaries do you see lots of volcanoes on land? Underwater? .Three types of seismic waves -which is fastest, which doesn't travel through liquid which causes the most damage Elastic rebound theory Earthquake intensity v. magnitude Differences between richter scale and modified mercalli What type of plate boundaries do you see the largest earthquakes? Earthquake hazards beyond the shaking-what type of building do you want to be in? What do you want under your building Types of rock deformation and faults (reverse, normal, strike-slip, etc.)Explanation / Answer
1. Structural Differences
Cinder cone volcanoes have steep, straight sides, between 30 and 40 degrees, and a single, large summit crater. . Composite volcanoes have an upwardly concaved slope and a small summit crater. Shield volcanoes have an upwardly convex slope, averaging less than 15 degrees and flatter on top.
Size Differences
Cinder cone volcanoes are relatively small, rarely exceeding 1,000 feet tall. Composite volcanoes, also known as stratovolcanoes, are towering structures, often rising more than 10,000 feet. Shield volcanoes are broad, typically 20 times wider than they are high.
Lava Differences
Composite volcanoes typically feature andesitic, dacitic and rhyolitic lava. . Composite volcanoes have a low magma supply rate, resulting in infrequent eruptions. Shield volcanoes feature basaltic lava.
Eruption Differences
Cinder cone volcanoes are characterized by eruptions of lava fountains. . Composite volcanoes are characterized by highly explosive eruptions.. Shield volcanoes are characterized by non-explosive lava flows that can travel long distances over the volcano's gently sloping sides.
2. VOLCANIC NECK
A volcanic plug, also called a volcanic neck or lava neck, is a volcanic landform created when lava hardens within a vent on an active volcano. When forming, a plug can cause an extreme build-up of pressure if volatile-charged magma is trapped beneath it, and this can sometimes lead to an explosive eruption.
A flood basalt serves as a result of a giant volcanic eruption that covers large stretches of land with basalt lava.
A natural conduit formed by flowing lava which moves beneath the hardened surface of a lava flow. is lava tube.
A large cauldron-like depression that forms following the evacuation of a magma chamber is caldera.
3.Tabular is table like and massive is large in size.
Concordant if they form parallel to existing features like sedimentary strata. Discordant is plutons if they cut across existing structures.
4.Hot spots,
Divergent plate boundaries (such as rifts and mid-ocean ridges)
Convergent plate boundaries (subduction zones)
5.P (primary) waves, S (secondary) waves and surface waves
p waves are fastest, s waves doesnot travel through liquid and surface waves are most harmful.
6.It is an explanation for how energy is released during an earthquake.As rocks on oppo- site sides of a fault are subjected to force and shift, they accumulate energy and slowly deform until their internal strength is exceeded.
7.Magnitude measures the energy released at the source of the earthquake. Intensity measures the strength of shaking produced by the earthquake at a certain location.
8.the Mercalli scale describes the intensity of an earthquake based on its observed effects, the Richter scale describes the earthquake's magnitude by measuring the seismic waves that cause the earthquake. The two scales have different applications and measurement techniques.
9.convergent plate boundries
10.it should be flexible,If the building has couple of very short columns, then during earthquake they will end up taking more loads
11. A geologic fault in which the hanging wall has moved downward relative to the footwall are Normal faults.
the hanging wall moves up relative to the footwall.Reverse faults indicate compressive shortening of the crust.
it is reverse of normal faults.
Strike-slip faults are vertical fractures where the blocks have mostly moved horizontally.
deformation
Elastic Deformation -- wherein the strain is reversible.
Ductile Deformation -- wherein the strain is irreversible.
Fracture - irreversible strain wherein the material breaks.
I hope it helps you
Related Questions
Navigate
Integrity-first tutoring: explanations and feedback only — we do not complete graded work. Learn more.