In some of the deepest parts of the ocean, at the bottom of the continental slope, a vast underwater plain can stretch for thousands of miles. While people canít make their homes there, many other animals do. Can you spot any of these sea creatures in (A) living amidst the muddy sediment? At times, an avalanche of sand and mud rumbles down the continental slope and forms a thin layer. This underwater avalanche is called a turbidite. You can see many layers from ancient turbidities in (B).
How do people get to the deep sea? Using a submersible like Alvin!
Back to the Table of Environments
(A) Martin Miller, University of Oregon, courtesy of Earth Science World Imagebank and (B) Courtesy of NOAA.
Shop Windows to the Universe Science Store!
The Fall 2010 issue of The Earth Scientist
, focuses on rocks and minerals, including articles on minerals and mining, the use of minerals in society, and rare earth minerals, and includes 3 posters!
You might also be interested in:
In early March, an international team of scientists will set sail aboard the drill ship JOIDES Resolution on the first of two Integrated Ocean Drilling Program (IODP) expeditions to the equatorial Pacific...more
We clambered into the Alvin. Once inside, there wasn't much space for the three of us to move around. The "cabin" is a sphere made out of welded titanium metal and it's about the size of a small walk-in...more
Each type of mineral is made of a unique group of elements that are arranged in a unique pattern. However, to identify minerals you donít need to look at the elements with sophisticated chemical tests....more
Quartz is the second most common mineral in Earthís crust. It is a member of the quartz group, which includes less common minerals such as opal, crystobalite, and coesite. Silica (Si) and Oxygen (O) are...more
Mica minerals make some rocks sparkle! They are often found in igneous rocks such as granite and metamorphic rocks such as schist. They sparkle because light is reflected on their flat surfaces, which...more
Feldspar is the most common mineral in the Earthís crust, so you are very likely to find it in the rocks you collect! It is found it all of the three rock types, but is most common in intrusive igneous...more
Olivine looks like little green crystals. It is typically found in some igneous and metamorphic rocks. Often the crystals are so small that you need to use your hand lens or magnifying glass to see them...more