1 DR. GRASSLE: Let me try to make a suggestion about these 



2 sentences. 



3 These studies have shown that canyons may have several kinds of 



4 sedimentary environments. 



5 DR. VALENTINE: They all have several kinds, yes. No canyon has a 



6 uniform, homogeneous sedimentary environment throughout. 



7 DR. GRASSLE: They may differ from one another in sedimentary 



8 environment. See, when you look there it is a problem, too. It could 



9 be within a canyon or between canyons. 



10 DR. VALENTINE: You could say, "These studies have shown that 



11 canyons do have--do exhibit different sedimentary environments--" not 



12 just "may exhibit." 



13 DR. GRASSLE: Okay, but how about "--do differ from one another in 



14 sedimentary environment--" 



15 DR. VALENTINE: Sure. 



16 DR. GRASSLE: Then, sediment sources and processes and bottom 



17 current regimes may also differ. 



18 DR. VALENTINE: Well, leave out the "may." 



19 DR. GRASSLE: --also differ, excuse me. 



20 DR. BOTHNER: That is a little redundant somehow. Saying that the 



21 sedimentary environments are different-- 



22 DR. GRASSLE: I just don't like "variable." Are you comfortable 



23 with "variable?" I will withdraw it if-- 



24 DR. BOTHNER: How about this? "These studies have shown that 



25 canyons exhibit widely different sedimentary environments. These are 



26 characterized by differences in sediment texture, intensity of bottom 



27 currents, and the predominant sediment processes from canyon to canyon." 



28 DR. GRASSLE: Sounds good to me. 



29 DR. VALENTINE: That is fine. I was just trying to make it more 



30 general, but it is all right with me. 



31 DR. GRASSLE: It seems critical in our later discussion to get 



32 this idea that there is not an average canyon. 



33 DR. VALENTINE: In the characteristics section, I did not want to 



34 be redundant. 



438 



