Subduction zone - Study guides, Class notes & Summaries

How are igneous rocks formed? A. In gas B. By erosion C. From a molten state D. By heat and pressure - C. From a molten state How can crustal diamonds form? A. Oceanic subduction B. Volcanic eruptions C. Meteorite impacts D. Radiation decay - C. Meteorite impacts How does metasomatism affect lithospheric diamond formation? A. Supplies heat B. Transports rock C. Removes oxygen D. Provides hydrogen - C. Removes oxygen What are the rock types where most diamonds form? A. Basaltic cr...

Which of the following best describes the fundamental concept if superposition? - Any sedimentary deposit accumulates on older rock or sediment layers. New oceanic crust and lithosphere are formed at ______________ - divergent boundaries by submarine eruptions and intrusions of mafic magma Deep ocean trenches are surficial evidence for _________________ - Sinking of oceanic lithosphere into the mantle at a subduction zone. Since the early Mesozoic, the ________ has been passive tectonica...

What is convection correct answers Cold air sinks because it is more dense What is the lithosphere correct answers The top part of the mantle and all crust, on top of asthenosphere In SoCal our plate boundary is... (list plate, boundary and rise) correct answers Pacific plate, transform boundary, east pacific rise Why is San Francisco in the same location correct answers It must be East of the San Andreas What will happen to Western California correct answers It will move more northw...

Geology Exam 2 Questions Correctly Answered. What do the two stars near the center of this block represent? - CORRECT ANSWER a) location of the earthquake b) the star at depth is the place where the earthquake is generated c) the star at depth is the hypocenter d) the star on the surface is the epicenter e) All of the Above All of the Above is the answer An earthquake generated on this type of fault would most likely be associated with a: - CORRECT ANSWER transform boundary If ...

How are igneous rocks formed? A. In gas B. By erosion C. From a molten state D. By heat and pressure - C. From a molten state How can crustal diamonds form? A. Oceanic subduction B. Volcanic eruptions C. Meteorite impacts D. Radiation decay - C. Meteorite impacts How does metasomatism affect lithospheric diamond formation? A. Supplies heat B. Transports rock C. Removes oxygen D. Provides hydrogen - C. Removes oxygen What are the rock types where most diamonds form? A. Basaltic cr...

List the 3 main layers of the earth from the center to the outside based on composition (what they are made out of). - Answer-1). Core (Inner and outer)-solid inner liquide outer. Iron/nickel alloy. Extreme pressure 2).Mantle-82% of the earth's volume-Solid, rocky, shell 3). Crust (Oceanic-younger rocks and Continental-granite rocks) List the 5 mechanical layers of the earth (based on how they deform?) Whic layers is a liquid? - Answer-1.The lithosphere is the outermost mechanical layer a...

Edexcel AS Level Geography Paper 1 Mark Scheme June 2022. Dynamic Landscapes. Award 1 mark for a correctly identified characteristic: • Magnitude  • Speed of onset  • Areal extent  • Duration  • Frequency  • Spatial predictability . Accept any other appropriate response, including some human characteristics, e.g. vulnerability. (1) Question number Answer Mark 1(b)(i) AO3 (2 marks) Award 1 mark for each correctly calculated stage. Allow error carried f...

The type of magma associated with oceanic hot spots - mafic Decompression melting in this setting forms a long, submarine ridge - divergent boundary When mafic magma rising from the mantel rises through this type of crust, it will form int-felsic magma - Continental crust Shield volcanoes may form here, when magma upwells from the asthenosphere - hot spot The type of magma that most commonly forms at subduction zones - int-felsic magma This tectonic setting can form an explosive caldera - ...

Geology Exam #1 Questions With Answers Who proposed the theory of Continental Drift? Alfred Wegener. In which ocean are most of the world's convergent plate boundaries located? Pacific Ocean. The east coast of North America is a what boundary? The West coast of South America is what boundary? Not a plate boundary. A convergent plate boundary. What is associated with a divergent plate boundary? Name a divergent plate boundary. Earthquakes, volcanicm and rifting. The mid-at...

The present continents once formed a single landmass known as what? correct answers Pangea The measurement of water depth in oceans, seas, and lakes is known as what? correct answers Bathymetry The Mid-Atlantic Ridge is an example of what kind of plate boundary? correct answers Divergent The Cascadia Subduction Zone is located off of which three states (select all three). correct answers Oregon, California, Washington The City of San Francisco is located on which tectonic plate? corr...