Exam 2: Minerals: the Building Blocks of Rocks

What is the most active, long term, deep diving, manned submersible used for studying the seafloor and deep ocean depths?

Geologically, what is the best way to explain the thousands of metres of coral limestone beneath most atolls?

Which is the deepest ocean trench?

__________is/are most soluble in cold seawater at ocean depths in excess of 4500 metres.

What do the tube worms of the hydrothermal vent communities directly rely on for their survival?

What kinds of materials account for the phosphate rich sediments?

Which one of the following is not connected in any way with submarine, hot spring vents?

The continental rise is located__________ .

As a result of the 1831 expedition of the H.M.S. Beagle, _________proposed the correct theory of how atolls formed.

The chaotic accumulation of deformed sediments and tectonic slices of oceanic crust plastered onto the edge of a continent is called_____________ .

Active continental margins are found____________ .

Which is the longest ocean trench?

_____________are not associated with a mid- ocean ridges.

In the 1870s, the____________ was involved in the first far- reaching, comprehensive study of Earth's oceans.

If your ship is out in the middle of the North Pacific Ocean on the edge of the abyssal plain south of the Aleutian trench, how deep is the seabed if it took 6 seconds to get a bottom return from your 3500 kilohertz echo sounder? Use the equation: depth (m) = 0.5 * (1500 m/s * total 2- way travel time in sec)

How long does it take for the ocean crust to cool off and become as dense as it can by compaction and mineral infilling of porosity?

Calcareous ooze is composed of___________ sediment.

How broad an area of seafloor was covered by the 1929 Grand Banks turbidite deposit?

Why are the deep sea clays mostly red or brown?

Below the coral limestone, surface rocks of an atoll, what would you find?