Darrell Henry

Beartooth Highway Field Trip and Activities part of NAGT:Teaching Resources:Teaching in the Field:Field Trip Collection
Darrell Henry, Louisiana State University Dave Mogk, Montana State University Intended Audience: This field trip and related exercises was used for a Teaching Petrology in the 21st Century workshop, but may be ...

What can zircons tell us about the Early Earth? part of Cutting Edge:Early Earth:Activities
This image shows an array of Jack Hill zircons arranged on a piece of tape prior to casting in epoxy. Details Students create U-Pb concordia plots in Excel to experience the methods used to date the worlds oldest zircons and use these results to explore what geologic processes were active on the Early Earth.

Pet Rock Project: A Semester-long Exercise for Igneous and Metamorphic Petrology part of Cutting Edge:Petrology:Teaching Examples
The pet rock project is a semester-long project in which each student randomly selects an igneous or metamorphic rock from the instructor or brings in a rock from an appropriate locality, and follows all of the steps a petrologist would take to interpret an igneous or metamorphic rock from an unknown area. This project runs in the background of the petrology class during the initial part of the semester while the student acquires the petrologic skills to make more sophisticated interpretations. The culmination of the project is for each student to spend several hours with the instructor using the electron microprobe to identify more difficult minerals with certainty, to produce high quality digital backscattered electron images and to obtain quantitative electron microprobe analyses of selected minerals that aid in the interpretation of the pet rock.

Igneous and Metamorphic Petrology part of Cutting Edge:Course Design:Goals Database
This is a junior-level igneous and metamorphic petrology course that is meant to give students practical and theoretical backgrounds for identifying, classifying and interpreting igneous and metamorphic rocks, generally in a tectonics context. The course is a 3 credit course, with two hours of lecture and 3 hours of lab per week. This course is considered as a communication-intensive course due to the amounts of revised writing and oral presentations required in the course.

Darrell Henry part of Building Strong Geoscience Departments:Workshops:Assessing Geoscience Programs:Participant Essays
Darrell Henry, Department of Geology and Geophysics, Louisiana State University My perspective on assessment of geology programs has shifted to a more institutional view over the last few years. LSU, like many ...

CLTheory part of Integrating Research and Education:Geochemical Instrumentation and Analysis
Darrell Henry, Louisiana State University Bombarding the surface of a material with some incident radiation or particle may result in the emission of electromagnetic radiation beyond that produced by thermal black ...

Optical Cathodoluminescence (Optical CL) part of Integrating Research and Education:Geochemical Instrumentation and Analysis
Darrell Henry, Louisiana State University What is Optical-CL? Optical cathodoluminescence (optical-CL) permits optical examination or imaging of a sample through the attachment of an evacuated CL-stage to an ...

BraggsLaw part of Integrating Research and Education:Geochemical Instrumentation and Analysis
Darrell Henry, Louisiana State University Nelson Eby, University of Massachusetts - Lowell John Goodge, University of Minnesota - Duluth David Mogk, Montana State University When a crystal is bombarded with X-rays ...

X-Ray Generation part of Integrating Research and Education:Geochemical Instrumentation and Analysis
X-Ray Generation Your Account Geochemical Instrumentation and Analysis Integrating Research and Education > Geochemical ...

Wavelength-dispersive spectroscopy (WDS) part of Integrating Research and Education:Geochemical Instrumentation and Analysis
Darrell Henry, Louisiana State University John Goodge, University of Minnesota-Duluth When an electron beam of sufficient energy interacts with a sample target it generates X-rays, as well as derivative electrons ...

Scanning Electron Microscopy - Cathodoluminescence (SEM-CL) part of Integrating Research and Education:Geochemical Instrumentation and Analysis
Darrell Henry, Louisiana State University What is SEM-CL? A cathodoluminescence detector attached to a Scanning Electron Microscope (SEM), Field Emission Microscope (FEM) or an Electron Microprobe (EPMA) is ...

Electron Interactions part of Integrating Research and Education:Geochemical Instrumentation and Analysis
Darrell Henry, Louisiana State University Electrons accelerated onto a material result in a number of interactions with the atoms of the target sample. Accelerated electrons can pass through the sample without ...