Exam 6: Sedimentary Rocks

Mudrocks have generally been compacted by up to 40% compared to their original sedimentary thickness and form.

Compaction is a very important part of the lithification process for which of the following sediments?

The oldest multicellular organisms from the ________ are known only as imprints and have no hard body parts for any of the fauna.

What is the hardest cementing mineral commonly found in sedimentary rocks?

Examine the words and/or phrases for each question below and determine the relationship among the majority of words/phrases. -Choose the option that does not fit the pattern.

Zircon and tourmaline are dense, highly insoluble, physically tough, chemically stable, minor minerals of igneous and metamorphic rocks.In which sedimentary rock might you expect to find these minerals concentrated?

An irregular pile of laminated sandy beds which are lens shaped in two directions and have low angle cross stratifications are called ________.

What rock type would be made from rounded grains of various rock types ranging from 1 to 250 millimetres?

Which type of sandstone contains abundant, clayey, matrix material?

Explain how small delicate crystals of siderite (iron carbonate)could come to be in the pores of a dinosaur bone.

In what environment are deltas typically formed, and why are they formed there?

What kind of depositional environment (facies)makes linear sand bodies?

Which limestone consists mainly of tiny, marine fossils composed of calcite?

What is probably the single most important, original, depositional feature in all sedimentary rocks?

Name three different things we can infer from fossils in sedimentary strata.

What is the usual order, first to last, for the precipitation of the following evaporite minerals from concentrated seawater?

The correct order for increasing carbon content and coal rank is ________.

What is the most common group of rocks exposed or cropping out on continents?

What setting is suggested by a circular region about 40 km across with predominant shales, a thick sandy delta sequence at one end, and both of them surrounded by a thin rim of sandy, well sorted beach deposits?

Where would you find small arcuate bodies of coarse limestones surrounded by shales?