12
b-are found in the tropics.
29-deep-sea sedimentation are made of : a- external sources.
b-internal ressources.
c-external and internal ressources.
30-external ressources that make up deep sea sedimentation :
a- Are terrigenous sediments.
b- Are biogenous sediments.
31-internal ressources of deep-sea sedimentatin : a- are cosmogenous
sediments.
b-are biogenous and hydrogenous sediments.
Exercise2 :answer the following questions :
1-what is the origin of marine sediments ?
2-what are the different kinds of marine sediments ?
3-do marine sediments vary in size and shape ?
4-how do we call
large particles and tiny particles of marine
sediments ?
5-what are the different factors that affect the distribution of marine
sediments ?
6-what kind of marine sediments we find in high energy environments ?
What about low energy environments ?
7-is there a relationship between the rate of erosion and the deposit of
rock particles in the ocean ?
8-are marine sediments found in the continental shelf similar to those
found in the bottom of the ocean ?
9-what type of sediments do we find in shallow water ?
10-what type of sediment do we find in the bottom of the ocean ?
11-what are carbonate shelves made from ? where can we find them ?