Noaa Age Of The Ocean Floor

Imagine what the ocean floor would have looked like 150 million years ago when all the rocks younger than that did.

Noaa age of the ocean floor. Purple 155 180 mya 3. Rov jason gets a close view of magma explosions and lava flows on west mata volcano. The data is from four companion digital models of the age age uncertainty spreading rates and spreading asymmetries of the world s ocean basins. Very little of the sea floor is older than 150 million years.

A case study pdf 2 2 mb in this issue of current the journal of marine education the noaa ship okeanos explorer comes alive capturing the enthusiasm of the ship s. The greatest number of the earth s volcanoes occur on the ocean floor. The color image representing crustal ages was created from a digital age grid of the ocean floor with a grid node interval of 0 1 degrees using a self consistent set of global isochrons and associated plate reconstruction poles by the authors. Yellow 40 55 mya 6.

A special issue featuring. The following features are shown at example depths to scale though each feature has a considerable range at which it may occur. A digital age map of the ocean floor. The final map will allow you to explore all of the maps.

This amount of time defines the age of a rock. A closer look at ocean careers through the noaa ship okeanos explorer. The journal of marine education. Deep ocean drilling and radiometric dating in the late 1960s gave an accurate stratigraphy and precise date of the ocean floor.

Sio reference series 93 30 scripps institution of oceanography. This graphic shows several ocean floor features on a scale from 0 35 000 feet below sea level. White over 180 mya 2. Age of the ocean floor a critical analysis.

Crust was formed to some degree in layers corresponding to the color images on the noaa age of the ocean floor rainbow map as follows. Careers on the noaa ship okeanos explorer. This image shows the age of rocks on the atlantic ocean seafloor. Data from digital age map of the ocean floor by muller and others scripps institute of oceanography.

Blue 140 155 mya 4. Volcanic eruptions occur only in certain places and do not occur randomly. Continental shelf 300 feet continental slope 300 10 000 feet abyssal plain 10 000 feet abyssal hill 3 000 feet up from the abyssal plain seamount 6 000 feet. Once you have labeled each map correctly you should be able to answer the series of questions that follow the exercise.

Images and animations depicting the crustal age of the ocean floor created by the noaa national centers for environmental information ncei from bathymetric topographic and marine geological and geophysical data. Scientists use the magnetic polarity of the sea floor to determine the age. This activity consists of naming the continents identifying mid ocean ridges and determining the age of the ocean floor.