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Posts tagged ‘geology’

When I Grow Up

He grinned at me from atop my desk, and I burst into giggles. “Oh, wow!”, I exclaimed. I snatched up the stuffed T.Rex to examine him further; his stubby arms, long tail, and reptilian eyes.

“I’m glad you like it,” said my husband. “I thought you could use a present.”

“Yeah, he’s great!”, I replied happily as I marched the toy around on my desk.

When I was a child, if someone asked me what I wanted to be when I grew up I would reply, “I want to dig up dinosaur bones!” I would spend hours in my backyard digging holes and dragging whatever I found into the house: old bottles, interesting rocks, and sometimes even bones, which I was convinced had once belonged to some ancient creature. My parents were encouraging; I owned countless dinosaur picture books and toys, a chemistry set and a rock collection.

When I grew older, my mother would often take my brother and me to the Natural History Museum on the University of Michigan campus. I would stare in open mouth wonder at the articulated skeletons of dinosaurs and mammoths and stare dreamily at the dioramas of ancient landscapes and their inhabitants. It was in this same museum that I discovered what came to be my obsession geology. I would press my face against the glass cases, marveling at the museum’s rock and mineral collection. I wondered how these things that were not living could grow with such perfection and beauty. I was always allowed to pick out a few rocks from the gift shop to add to my collection, which I still own.

T.Rex is keeping me company here on my desk as I study for finals. He reminds me that I’m doing this for that little girl who loved to play in the dirt and and stuff her pockets with rocks.

Secrets in Stone

I’m in ththin sectione mineralogy lab in the sub-basement of Cramer Hall. I’m seated in front of a petrographic microscope, a tool that I will come to know and love as a geology major. I place a slide carefully on the microscope stage. I look through the eyepiece and gasp- I never expected it to look like this. It’s beautiful! I eagerly press my eye to the ocular and take in the sight; a patchwork of colors, shapes and textures shines up at me. I rotate the stage and am shocked to see the light shift and play over the quilt of mineral crystals like a kaleidoscope. This is my first time observing a rock “thin section” and it’s blowing my mind.

After a few minutes of open-mouthed awe, I remember that I have a task to do; I need to identify the minerals that make up the slice of rock on my slide. Being a novice, I begin at the beginning. ‘Ok, so plagioclase has black and white stripes.’ I peer through the eyepiece looking for the tell-tale zebra stripes. My untrained eye is dazzled by the menagerie of shapes and colors. How am I ever going to pick out one mineral from all of this? I move the slide around on the stage, hunting for plagioclase. I finally spot one, and then another, and then another… suddenly I see them everywhere. They seem to pop out at me from the noise of the background.

I slowly work my way through the rest of the thin section, reading the rock like it’s written in an ancient language. I find myself totally lost in my work, and am surprised when I look at the clock to see that 3 hours have passed. Sadly, it’s time to go. I can’t wait to get back in the lab and continue to learn what the rocks have to teach me.

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