Geology 2

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the
Earth outer segments or lithosphere plates move relative to each other. Most volcanos
are located near the plate tectonics activity.

Plate Tectonic
that continents were once joined
into a single landmass, which broke into continents or fragments that move with
respect to one another. The layers consist of soft outer crust on top of a
heavier crustal material.

Continental Drift Theory
is first part of the core made from nickel
and iron and it’s a solid that radiates heat. The second part is the outer core
is above the inner core and made of liquid compostion of the same
material.

Earth Inner Core
is the earth’s outer ridge, which consist of the
mantle, oceanic crust and continental crust. The Asthenosphere is the outer mantel
above the Lithosphere, which is able to float above the Asthenosphere due to its
flexability.

Lithosphere
is the reversal of the Earth’s magnetic
poles from north to south to south to north.
It poles has change so many times in intervals called polarity epochs.

Magnetic Reversals
is a fault which displaces oceanic ridges
called strike- slip. The San Andres
fault is an example of transform fault. ( ***** ) is conversion oceanic plate
boundary which is force down into the mantel of another plate. The cause of earthquakes due to the
grinding.

Transform Fault & Suduction Zone
is a underwater mountain ridge which is made
of basalt rock which is found in oceanic basins.

Oceanic Ridge
where two tectontic plates go
against each other and creates mountains.
Divergent Plate Boundary where two plates move away from each
other. The crust is formed from the
magma that is left between the two plates.

Convergent Plate Boundary
a localized zone that melts below the lithosphere that probably overlies a mantle plume

Hot Spot (Mantle Plume)
Index (guide) Fossil is a remains organism that lived in a
particular geological time period. This
helps identify the rock layer to a specific time frame.

Index (guide) Fossil
is determining an order of past geologic events
without absolute geologic dating with the use of fossils within rock or rock
layering to determine age.

Relative Dating
is a break in the geologic record which is
shown by the erosional surface separating younger strata from older rocks.

Unconformity
refers to the methods to which the age
relationship between various strata of the Earth’s crust is settled. The two methods are physical correlation
characteristics of strata and comparing the type of fossils correlations in
various strata.

Correlation
that forms from radioactive decay related from the parent isotope can become a
parent isotope if its radioactive. The cycle starts againg with the daughter
becoming a parent and having a daughter and the last daughter isotope forms
will become stable and nonradioactive.

Daughter Isotope

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Card Set

Geology 2

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review

Updated

11/8/2011, 12:41:20 AM

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