Nov
08

Shear Zone Kinematics: Fabric Analyses via 3D Strain Calculations

As I mentioned in my post from last month, recently I have been focusing on making structural calculations for my rock samples in order to meet my research goal of quantifying the kinematics of these shear zones. Aspect ratio calculations and plotting have been receiving most of my attention, and I have been using a…
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Oct
22

Eclogitization in the Lofoten Islands: Structural Analysis

Much of the first few weeks with my thin sections were devoted to the petrologic aspects of my research. As I mentioned in last month’s post, I carefully analyzed each thin section for the minerals with which it was made up, made preliminary measurements, made decisions on which thin sections would be best to use…
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Sep
04

Eclogitization in the Lofoten Islands: Thin Section Arrival

My thin sections have finally arrived and the wait is over! I sent off 20 small blocks of rock (each no more than 3 inches by 1 inch and approximately half an inch thick) and they came back to me in the form of microscope slides. I can now view my rocks samples using a…
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Aug
17

Eclogitization and Shear Zone Kinematics: Geochemistry Data

After six weeks of waiting, I have received my samples that were processed for geochemistry but still await the arrival of my thin sections. Thus, I have been spending some quality time with my geochemistry analysis data this month, and have been able to start a preliminary petrographic analysis of my samples. My geochemistry data…
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Jul
10

Eclogite Analysis: Thin Section and Geochemistry Sample Preparation

After many weeks of sawing, cutting, slicing, cleaning, careful labeling, and extremely careful packaging, twenty thin section blocks have been made from my rock samples and shipped off to be transformed into microscope slides. The majority of them came from rock samples taken from Shear Zone 2, at my Nusfjord site, while the minority of…
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