Exam 6: Sedimentary Rocks

Which one of the following is commonly preserved in the fossil record as moulds?

Which of the following sedimentary rocks is usually biochemical in origin?

The aspect, thickness, and appearance of a rock unit, and reflecting its environmental conditions of origin, is collectively referred to as its ________.

Which property, during the transport and deposition of sediment, depends on the range of different grain sizes that accumulate?

Once sedimentary particles are eroded they maintain a constant size and shape.

A succession of beds where each is a tabular massive layer with more coarse material at its base and fines near the top is called ________.

The soft-bodied fossils of the Burgess Shale were preserved by ________ as thin carbon films, due to the selective loss of more volatile components.

What are the main sources of carbon from the lithosphere?

How does most calcium-magnesium carbonate rock form?

Which of the following best describes bedded gypsum and halite?

The sedimentary rocks salt and gypsum are deposited by what process?

What are the remains or impressions of once-living organisms preserved in sedimentary rocks?

Which of the following is the most common type of chemical sedimentary rock?

What material would be best suited to preserve original organic tissues?

Peat is thought to be the original material from which coals are formed.

What significance is there in a coarse unsorted sediment with fragments of gravel?

What rock type would be made mostly from particles 0.5 to 2.0 millimetres with a few larger rounded grains >4 mm in size?

Eolian sediments are deposited directly beneath ice sheets.

Which of the following applies to the basic constituents of halite, gypsum, and sylvite?

Which common mineral of igneous rocks is the most abundant mineral in detrital sedimentary rocks?