Contact Metamorphism -- the basalt flow has baked the underlying limestone
You may wish to print a copy of the lecture outline (minus the illustrations) and you have two options:
"Metamorphic rocks form from other rocks (protolith) by essentially solid-state changes in mineralogy and/or texture as a
result of a change in chemical and/or physical environment.
"Metamorphism takes place in a variety of geologic settings. A general outline of metamorphic settings is shown below. It
should be noted that with the exception of impact metamorphism, the general types grade into one another."
"James Hutton (1727-1797), the eminent 18th century gentleman farmer and founder of modern geoscience, authored
the concept of the rock cycle, which depicts the interrelationships between igneous, sedimentary, and metamorphic
rocks. The upper part of the earth (mantle, crust and surface) can be envisioned as a giant recycling machine; matter
that makes up rocks is neither created nor destroyed, but is redistributed and transformed from one rock type to
another. PETROLOGY, the study of rocks and their origins, is essentially the formal process by which we resolve the
interrelationships expressed in the rock cycle."
Internet Resources
A Virtual Field Trip to Big Bend National Park
This site was constructed by two students at Texas A&M University.
" The Big Bend Virtual Field Trip was created for an independent study project for the Texas A&M University Department of Geology under the supervision of Dr. Bruce Herbert. During the week of Spring Break 1996, we visited Big Bend. for the purpose of researching the geology of the park and taking pictures of pertinent geologic features. Once all of the pictures and information were compiled, we scanned the images and started construction of the web site.Big Bend for the purpose of researching the geology of the park and taking pictures of pertinent geologic features. Once all of the pictures and information were compiled, we scanned the images and started construction of the web site."
Learning about geology from a computer screen is only half as fun as enjoying it in the field!
| jbutler@uh.edu
|E-mail the ClassListserv|Read the ClassListserv|
|Textbook Home Page
|Glossary of Geologic Terms|Search These Pages|
|Other Courses|Resources|Grade Book|
Copyright by John C. Butler, July 29, 1995