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Magnetic Profiles over the Reykjanes Ridge |
| Data from an aeromagnetic survey over the Reykjanes Ridge. The data was used to create a map of seven magnetic profiles. Profile numbers, used for identification, are at the west end of the cross sections. This map illustrates the strengths and reversals of the Earth's magnetic field. Profil ... |
| Data Types: graphs, cross section, map |
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CALS7K.2 Model Declination and Google Earth - rainbow scale - B.C. |
| This kmz file contains one component, declination, of the global geomagnetic field model, CALS7K.2 (Korte & Constable, 2005). The file contains the model at 50 year intervals covering 5000 years from 5000 B.C. to 0 (due to the large file size for the full 7000 years), along with a colour scal ... |
| Data Types: animation, data compilation |
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World Map of Major Volcanoes |
| This map shows the location of major volcanoes throughout the world, illustrated by red triangles. |
| Data Types: map |
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Global Archeomagnetic Field Model for the Past 7k Years: CALS7K.1 |
| We present a continuous global geomagnetic field models for the recent millennia: CALS7K.1 covering 7000 years from 5000~BC to 1950~AD. This model, however, has meanwhile become superseded by CALS7K.2. If you are not specifically interested in the older version CALS7K.1 please use CALS7K.2 ... |
| Data Types: movie, map, program source code |
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Magnetic Profile I |
| This graph is 1 of 2 in a series, it shows the varying strength of the magnetic field derived from geomagnetic data from the seafloor. For additional information on magnetic profiles see Magnetic Profile II. |
| Data Types: graphs, cross section |
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Gravity Measurements Over an Oceanic Ridge |
| A diagram re-drawn from Earth's Dynamic Systems, comparing gravity intensity (in Mgal) vs. the distance (in km) from data gathered at a mid-ocean ridge. The graph indicates a significant difference between the gravit ... |
| Data Types: graphs |
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Extremes in the 4th dimension and the EarthRef.org Digital Archive |
| This powerpoint presentation is aimed to layout the one of the key observations that support the theory of plate tectonics. It shows evidence for the oldest ocean floor (~168 Ma) in the Pacific ocean at ODP Site 801C and the oldest seamount (~140 Ma) in the West Pacific Seamount Province. Bot ... |
| Data Types: document |
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Heat Flow Levels Over a Mid-Ocean Ridge Data Worksheet |
| This image of heat flow at a Mid-Ocean Ridge is re-drawn from a graph in Earth's Dynamic Systems. Mid-ocean ridges are shallow because the crust at a mid-ocean ridge is hot and less dense than cooler, older oceani ... |
| Data Types: graphs, spreadsheet |
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Cross Section of the Earth With Magnetic Field Line Directions |
| The image shows a cross section of the Earth's interior along with exterior magnetic field lines. At the center is the solid inner core, formed primarily of Iron (Fe) and Nickel (Ni), which is very hot (between 5000-7000¿C), but is a solid due to intense pressure. Outside of the inner core i ... |
| Data Types: model cartoon |
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Ocean Floor Mapping - Atlantic Ocean |
| To use distance and depth data from ERESE ship logs to create a profile of the Atlantic Ocean. This is a middle school activity in which students will be able to graph and describe the topography of the ocean floor. |
| Data Types: graphs, map, data compilation, lesson plan, field guide |
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Distance from Kilauea and Age of Hawaiian Island Volcanoes |
| This graph depicts a trend present in the Hawaiian Islands and Emperor Seamounts in which age of the island and seamounts increase as the distance from Kilauea increases. The line of best fit shows that this relationship is nearly linear indicating that the velocity at which the Pacific Plat ... |
| Data Types: diagram, graphs |
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Age of Hawaiian Islands and Outer Seamounts |
| This spreadsheet provides data regarding the name, age and distance from Kilauea of the Hawaiian Islands and some of the Emperor seamounts. |
| Data Types: spreadsheet |
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Provocative Phenomena - Ocean Depths in a Shoebox |
| Image excerpt from the "Mapping the Ocean Floor Powerpoint" available from ERESE (http://earthref.org/cgi-bin/erda.cgi?n=594). |
| Data Types: photograph |
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Radiometric Age of Volcanoes Along Hawaiian Ridge |
| This diagram shows the age relation of volcanoes along the Hawaiian Ridge with respect to distance from Kilauea. Notice the trend of increasing age the further from Kilauea the volcano is located. This image can also be viewed without the radiometric age information in order to visualize ... |
| Data Types: diagram |
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Known Duration of Various Stages of Volcanism for Principle Hawaiian Islands |
| This image shows the duration of tholeiitic shield, alkalic post shield and alkalic rejuvenated stage activity for various Hawaiian Islands. Angled lines indicated uncertain ages or overlapping volcanism. For a description of volcanic terms review |
| Data Types: diagram |
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Age of Hawaiian Islands and Outer Seamounts Simplified Data Set |
| This data set has been modified from the Age of Hawaiian Islands and Outer Seamounts data set. This is a simplified version of the original data set and provides data for the name, age and distance from Kilauea of th ... |
| Data Types: spreadsheet |
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Magnetic Anomoly Profiles for Different Spreading Rates |
| The image shows 4 magnetic profiles across the East Pacific Rise, each with a different spreading rate. As the spreading rate increases from 25 to 50, 100, and 125 km/Myr (2.5, 5.0, 10.0 and 12.5 cm/yr respectively), the profiles become smoother. Smoother profiles are easier to compare th ... |
| Data Types: graphs |
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Depth Data Across the Reykjanes Ridge |
| The attached data table provides depth (bathymetry) data for points across the Reykjanes Ridge in the North Atlantic (near Iceland). The distances from the ridge are based on sample locations shown on the Bathymetry Map Across th ... |
| Data Types: spreadsheet |
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Age Data for the Reykjanes Ridge |
| The attached spreadsheet provides data taken from sampling locations across the Reykjanes Ridge in the Atlantic Ocean, just southwest of Iceland. The latitude and longitude coordinates represent sites that span 200 km on each side of the ridge. A rough calculation for the seafloor spreadin ... |
| Data Types: spreadsheet |
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Magnetic Field Intensity Data Across the Reykjanes Ridge |
| The attached data table provides magnetic field intensity recordings taken from different points across the Reykjanes Ridge (near Iceland). The distances from the ridge are based on sample locations from the Magnetic Fiel ... |
| Data Types: spreadsheet |
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