Citing my sources
On Sunday morning, I mentioned a frozen pizza, and my interpretation of its geologic history. Afterward, Elli from UPJ wrote me a note asking if my post didn't actually quite closely resemble "Figure 1.42 in Davis and Reynolds"? (Davis and Reynolds' Structural Geology of Rocks and Regions is a popular structural geology textbook.)
Well, yep.... Yep, it does. That's the way uniformitarianism works. The same physical laws and less-than-fully-frozen pizza delivery methods that mildly deformed George Davis' pizza in in early 1980s still apply in late 2009. I'd like to point out (as a proud structural geologist) that my pizza was more deformed than Davis'. (It also had more ingredients.) Of course, he did a better job than I did, in describing and mapping that deformation:
(The full diagram also included a cross-section and a kinematic reconstruction. Used without permission, but with a sense of what I hope is 'fair use.')
In the interest of fully citing my sources, I'd like to explain my relationship to the pizza/structure analogy. Part I: In the spring of 1995, I attended one of the fun, rollicking pizza parties that Dr. J held for the William & Mary geology department. Dr. J provided blank pies and a slew of ingredients, and we hungry students could load them up as we saw fit. It was very generous of him, quite tasty, and a lot of fun. Lubricated by a goodly amount of Dr. J's red wine (which was present in gallon jugs), I (hazily) recall a fun discussion with some of my fellow geology majors. We were congratulating ourselves on having picked the coolest major around, and full of geo-ego*, our conversation focused on the fact that we could see geological principles everywhere!
Our pizza came out of the oven, and sure enough: look there! It was full of beautiful examples of (munch munch) stratigraphy! And structure! (chew chew, bite) And the ingredients were like minerals! (slosh, gulp) Wow! This is great!
Part II: The following fall, I took structural geology with Bruce Goodwin, and the assigned textbook was George Davis' Structural Geology of Rocks and Regions, first edition. And there, I found in the first chapter the pizza analogy illustrated above. With a frisson of personal recognition, I thought back to the pizza party. And I said to myself, "I like the way this author thinks! I'm going to like this class."
Indeed I did, and many years later, when it came time for me to teach structure, I turned to Davis' book, now in its second edition and co-authored with Steve Reynolds. It's still a great text, and full of good analogies and a sense of fun. I wonder how much that one diagram turned me on to structural geology: that single pizza sketch may have influenced the course of my life!
Part III: I made a pizza, and had a digital camera handy. Now you know the full story.
___________________________________________
* I hereby lay claim to coining what I'm sure will be a very useful term!
Well, yep.... Yep, it does. That's the way uniformitarianism works. The same physical laws and less-than-fully-frozen pizza delivery methods that mildly deformed George Davis' pizza in in early 1980s still apply in late 2009. I'd like to point out (as a proud structural geologist) that my pizza was more deformed than Davis'. (It also had more ingredients.) Of course, he did a better job than I did, in describing and mapping that deformation:
(The full diagram also included a cross-section and a kinematic reconstruction. Used without permission, but with a sense of what I hope is 'fair use.')
In the interest of fully citing my sources, I'd like to explain my relationship to the pizza/structure analogy. Part I: In the spring of 1995, I attended one of the fun, rollicking pizza parties that Dr. J held for the William & Mary geology department. Dr. J provided blank pies and a slew of ingredients, and we hungry students could load them up as we saw fit. It was very generous of him, quite tasty, and a lot of fun. Lubricated by a goodly amount of Dr. J's red wine (which was present in gallon jugs), I (hazily) recall a fun discussion with some of my fellow geology majors. We were congratulating ourselves on having picked the coolest major around, and full of geo-ego*, our conversation focused on the fact that we could see geological principles everywhere!
Our pizza came out of the oven, and sure enough: look there! It was full of beautiful examples of (munch munch) stratigraphy! And structure! (chew chew, bite) And the ingredients were like minerals! (slosh, gulp) Wow! This is great!
Part II: The following fall, I took structural geology with Bruce Goodwin, and the assigned textbook was George Davis' Structural Geology of Rocks and Regions, first edition. And there, I found in the first chapter the pizza analogy illustrated above. With a frisson of personal recognition, I thought back to the pizza party. And I said to myself, "I like the way this author thinks! I'm going to like this class."
Indeed I did, and many years later, when it came time for me to teach structure, I turned to Davis' book, now in its second edition and co-authored with Steve Reynolds. It's still a great text, and full of good analogies and a sense of fun. I wonder how much that one diagram turned me on to structural geology: that single pizza sketch may have influenced the course of my life!
Part III: I made a pizza, and had a digital camera handy. Now you know the full story.
___________________________________________
* I hereby lay claim to coining what I'm sure will be a very useful term!
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