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Geology Study Questions Ch 6 Part 2 Name:_________________________ What’s an “aqueous environment” in plain and simple terms? What do we mean when we say a chemical sedimentary rock is precipitated from an aqueous environment – in words of one syllable? We know it’s limestone if it’s made (almost entirely) of:_____________________ What are the 2 ways that living things can create limestone? --What are two types of organic limestone? Inorganic limestone is formed when what happens? During recrystallization, the atomic bits in the limestone do …what? If you want to convert a chunk of limestone to dolomite, what would you do to it? Chert isn’t made of the same stuff as limestone. What’s it made of? If I offer you $20 to form an evaporate mineral in the lab, is that a good deal? How would you do it? Organic limestone, chert, and oil all form from the dead bodies or shells of ___________________ that lived in _____________________. Coal is formed when dead _______________ fall into a _____________ and become ___________________ which is then _______________________________. How can you use the structures in sedimentary rock to tell which rocks are oldest? Describe in your own words how cross-bedding forms: Why are the largest articles in a graded bed almost always on the bottom? Mud cracks and ripple marks both preserve ancient ____________________.