1.Stromatolites are thinly laminated mats of _______________ that grow in shallo

Question

1.Stromatolites are thinly laminated mats of _______________ that grow in shallow aquatic environments.

Select one: a. Copepod b. Bacterial c. Bivalve d. Cnidarian

2. A marine transgression refers to _________________.

Select one:

a. Glacial Advance

b. Isostasy

c. Glacial Retreat

d. Regression

3. Small hills of glacial deposits that indicate flow direction are called _________________.

Select one:

a. Eskers

b. Kettles

c. Moraines

d. Drumlines

e. Kames

4. Oxygen isotope ratios in marine fossils are valuable indicators for paleoclimate studies. The standard ratio measures the amounts of O-16 to O-18. A measurement of 4.5 O-18 indicates a period of ______________.

Select one:

a. Lower Salinities

b. Global Cooling

c. Global Warming

d. Higher salinities

Explanation / Answer

1) b

2) b

3) e

4) a

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