Sunday, March 11, 2007


Sometimes things just work out. Sometimes, things only work out after they don't work out. I went on a search for a fossil site I had learned about with the hopes of taking a class trip there. Instead, I found beautiful scenery tagged with "No trespassing" signs and unfurled Confederate flags blowing in the breeze. But on the way I found Plan B- a roadside outcropping of rock that looked pretty good as I drove by at 55 mph in the dark.

The drive out with the class was one of nervous trepidation - what in the world was I really taking them to see? Had there been anything truly noteworthy there to show the class once we got there? The miles ticked by.

It turned out to be quite a nifty geospot. I'll show a couple highlights below:

My personal favorite. Notice the fan-like patterns in the middle of the photo:

Here's a closeup:

This is a fossilized feeding structure known as Zoophycus. It is produced by a type of worm-like organisims that "mines" fine-grained sediments for nutrients. It is characterized by concave-upward traces with whorled peaks and fans out across a plane horiziontal to somewhat oblique to bedding. Preservation of these types of feeding structures began approximately 500 million years ago and are found in deposits on the modern sea floor today. This type of feeding trace is common in reduced (anoxic) environments.

We took a few slabs that were chock full of Zoophycus, but didn't get any picts of those. I displayed effusive excitment that either inspired my students to appreciate the mysteries you can unlock through intimate knowledge of sedimentary geology, or I convinced them I was a total weirdo, albeit an amusing wierdo. My early conclusion is that either case can lead to effective teaching, as long as you snag their attention one way or another. I can update on my tests of this theory later on.

Another exciting find came through the hard-bodied fossils we saw:

A student went hog-wild when we came across a bed loaded with these bivalve fossils. He spent most of the time excavating this bed for samples, and worked up quite a sweat beating the crap out of the outcrop with a hammer. These are quite well preserved and look MAH-velous for their age (300 million years old or so). I have a paper that goes through the paleontology of the unit we were looking at and I plan to shamelessly exploit this students excitment by having him sort some of these out and get names on them. I'll update once he gets that done!

1 comment:




情趣用品,A片,AIO,AV,AV女優,A漫,免費A片,日本AV,寄情築園小遊戲,情色貼圖,色情小說,情色文學,色情,色情遊戲,一葉情貼圖片區,色情網站,色情影片,微風成人, 嘟嘟成人網,成人,成人貼圖,18成人,成人影城,成人圖片,成人影片,UT聊天室,聊天室,豆豆聊天室,尋夢園聊天室,080聊天室,080苗栗人聊天室,080視訊聊天室,視訊聊天室



麻將,台灣彩卷,六合彩開獎號碼,運動彩卷,六合彩,遊戲,線上遊戲,cs online,搓麻將,矽谷麻將,明星三缺一, 橘子町,麻將大悶鍋,台客麻將,公博,game,,中華職棒,麗的線上小遊戲,國士無雙麻將,麻將館,賭博遊戲,威力彩,威力彩開獎號碼,龍龍運動網,史萊姆,史萊姆好玩遊戲,史萊姆第一個家,史萊姆好玩遊戲區,樂透彩開獎號碼,遊戲天堂,天堂,好玩遊戲,遊戲基地,無料遊戲王,好玩遊戲區,麻將遊戲,好玩遊戲區,小遊戲,電玩快打

麻將,台灣彩卷,六合彩開獎號碼,運動彩卷,六合彩,線上遊戲,矽谷麻將,明星3缺一,橘子町,麻將大悶鍋,台客麻將,公博,game,,中華職棒,麗的線上小遊戲,國士無雙麻將,麻將館,賭博遊戲,威力彩,威力彩開獎號碼,龍龍運動網,史萊姆,史萊姆好玩遊戲,史萊姆第一個家,史萊姆好玩遊戲區,樂透彩開獎號碼,遊戲天堂,好玩遊戲,遊戲基地,無料遊戲王,好玩遊戲區,麻將遊戲,好玩遊戲區,小遊戲,遊戲區,電玩快打,cs online

情趣用品,情趣,A片,AIO,AV,AV女優,A漫,免費A片,情色,情色貼圖,色情小說,情色文學,色情,寄情竹園小遊戲,色情遊戲,AIO交友愛情館,色情影片,情趣內衣,情趣睡衣,性感睡衣,情趣商品,微風成人,嘟嘟成人網,成人,18成人,成人影城,成人圖片,成人貼圖,成人圖片區,UT聊天室,聊天室,豆豆聊天室 ,哈啦聊天室,尋夢園聊天室,聊天室尋夢園,080苗栗人聊天室,080聊天室,視訊交友網,視訊