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oldest near ocean ridges
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∙ 6y ago
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What is the name of maps that show depths of water and the shape of the seafloor?
Hydrographic surveys, which support the nautical charts used by mariners.
On topographic maps contour lines that are farther apaart indicate?
Flat (gently sloped)
What is a hachure line?
One of the short lines used on maps to shade or to indicate slopes and their degree and direction.
What are contour maps use to identify?
Contours on a map identify the hight of the land above sea level, and so indicate hills and mountains.
What is an isochron map?
A contour map that displays the variation in time between two seismic events or reflections. BY ASIF ZEB ERS-087
Isochron maps indicate what about the seafloor of the ocean crust?
Well i think that can be one of those a) oldest near ocean ridges b) Youngest hear ocean ridges c) Youngest at deep-sea trenches d) Thinnest in subduction zones
Each cycle of spreading and intrusion of magma during seafloor spreading results in?
isochron
Explain how an isochron map of the ocean floor supports the theory of seafloor spreading?
An isochron is a line on a map that connects points that have the same age. An isochron map of the ocean floor supports the theory of seafloor spreading because it shows the older rock near the deep sea trenches and the younger rocks near ocean ridges.
How an isochron map of the ocean floor supports the theory of seafoor spreading?
An isochron is a line on a map that connects points that have the same age. An isochron map of the ocean floor supports the theory of seafloor spreading because it shows the older rock near the deep sea trenches and the younger rocks near ocean ridges.
What is isochron slope 0.0077 in years?
.540
May indicate percents of population?
Data Maps
What is the name of maps that show depths of water and the shape of the seafloor?
Hydrographic surveys, which support the nautical charts used by mariners.
If the isochron slope is 0.0077 what is the age in millions of years when first evidence of abundant fossils?
Q: If the isochron slope is 0.0077 what is the age in millions of years when first evidence of abundant fossils?
Is an isochron a change in earth's magnetic field?
no false
Bands of rock the seafloor showing alternating magnetic orientation indicate earth's magnetic field has?
reversed itself in the past. hth :)
What is SR and RB in geological isochron?
SR is Strontium and RB is Rubidium. In Rubidium-strontium dating they are normally plotted as the ratio of 87Sr/86Sr against 87Rb/86Sr on the graph (isochron).
What do bands of rock on the seafloor showing alternating magnetic orientation indicate about the earths magnetic field?
They indicate that the Earth's magnetic field has undergone shifting of the positions of it's poles several times in the past.
