Ocean Lab Midterm 24 Flashcards
Where are sedimentary rocks located?
located on the Earth’s surface
How are Sedimentary rocks created?
Weathering (chemical or physical), Erosion, transportation (wind, water, and ice), and lithification
Where are Igneous rocks located?
Mid-ocean ridges, volcanic subduction zones, and hotspots
How are igneous rocks created?
hot molten rock crystallizing + solidifying
Where are metamorphic rocks located?
Deep within Earth, where tectonic plates meet
how and why the different types of crust interact
The differences in the density of oceanic and continual crust are responsible for how the tectonic plates interact.
continental crust
lower density 2.7
average average thickness 22 miles
Oceanic crust
Higher density 3.0
less thick 5 miles
Typography
above sea level
Bathymetry
Below sea level
Map data
Title, year published, title, creator, data sources, unit used
location info
reference map, coordinates, scale, north indicators
symbology
Land cover, elevation/depth, landmarks, infrastructure, natural features.
magnetic declination
two arrows with MN an a degree
Fractional scale
On the scale, the top number
graphic scale
everything below fractional scale
latitude
horizontal lines called parallels
longitude
Vertical lines called meridian
calculating map slope =
rise/run
Map slope contour lines
Change in elevation/distance
celsius to Fahrenheit
(celsius x 1.8) +32
Fahrenheit to celsius
(Fahrenheit -32) / 1.8
1 oz
28.35 g
1 lb
0.45 kg
1 stone
6.35 kg
1 in
2.54 cm
1 ft
30.48 cm
1 yard
0.9144 m
1 mile
1.61 kg
1 fl oz
29.57 ml
1 cup
237 ml
1 pint
0.47 l litre
1 quart
0.95 l
Rate of change
Distance rock spreading center/ age of the rock.
What factors can cause bedrock ( continental crust) elevation to change
the crust is thickened by the compressive forces related to subduction or continental collision.
How do you test the hypothesis that “new seafloor
is produced at mid-ocean ridges and subducted at trenches
Look for evidence in the crust. (paleomagnetism)
