Exercise 4 depositional environments 49 part b blackhawk formation, cretaceous, price canyon, utah (figure 4.8) 1. what is the dominant sedimentary rock type shown in figure 4.8 2. what economically important sedimentary rock occurs in this outcrop? 3. rocks of the blackhawk were most likely depos- ited in which of the sedimentary environments listed in table 4.1? explain your answer.

Astable electron arrangement for an atom is one that does not easily change. how is this arrangement arrived at? a. valence electrons are transferred or shared to create a full outer shell of electrons. b. valence electrons are discarded into space to create a full outer shell of electrons. c. protons (positive charge) pair with valence electrons (negative charge) to create a strong bond. d. outer shells with valence electrons are transferred or shared.