Exam 6: Sedimentary Rocks

Many limestones are of biochemical origin.

Describe the sediment character as to particle size and sorting for windblown dunes.

Well-preserved fossil insects are sometimes found in amber, a fossil tree resin.

How do water content and porosity vary with depth in sediments?

What does a sand that contains significant amounts of sand-sized rock fragments, blocky feldspar, and angular prismatic grains of ferromagnesian minerals suggest?

Where would the sequence: laminated muds overlain by salts overlain by well sorted sands likely form?

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.

Mud cracks in a shale or mudstone indicate that the mud or clay was deposited in deep waters of an offshore marine environment.

Flint, chert, and jasper are microcrystalline forms of which mineral?

Which of the following is most likely to be preserved as a carbonized impression?

Chalk, coquina, and ancient coral reefs are primarily composed of microcrystalline quartz.

What is the main difference between a conglomerate and a sedimentary breccia?

How are playa lakes formed and what kind of deposits occur there?

Which of the following is fossilized resin from evergreen trees?

Which type of sand depositional environment would probably have the best degree of sorting?

A succession of beds containing small scale asymmetric ripples that alternate their orientations are likely to be ________.

Most chemical sediments derive from ________.

Which of the following is a form of calcium carbonate found in cave formations and hot springs deposits?

Coal beds originate in what type of depositional environment?

Detrital sedimentary rocks have clastic textures.