A while back, a friend dropped this Mississippian Period blastoid in matrix off during his trip to Louisville. He had been collecting in the Indian Springs Formation of Crawford County, Indiana. The fossil is about as big as a marble.
So these first two pictures show the blastoid in the rock matrix. I decided to extract the blastoid with the Dremel engraver. The matrix was pretty soft and flaky.
I stopped to photograph the fossil plate with the engraver lines. Matrix has broken off revealing more of the blastoid theca.
Eventually the vibration of the engraver broke the blastoid free for its rock tomb. Now I need to sand blast it to reveal the top detail. Not the white marks where I probed to see if any more matrix would break away. Decided it might damage the fossil to proceed down this path.
Sunday, April 25, 2010
Saturday, April 24, 2010
Louisville Horn Corals
Horn coral finds in Louisville, Kentucky but the identification I am not sure about the first three.
Craterophyllum horn coral found in the Jeffersonville Limestone of Louisville, Kentucky. It existed in the Devonian Period.
Craterophyllum horn coral found in the Jeffersonville Limestone of Louisville, Kentucky. It existed in the Devonian Period.
Friday, April 23, 2010
Coal Display - Louisville Science Center
My interest in coal is two fold: first it is the main source of fuel that drive the generators that provide electricity and second I find coal sometimes while looking for fossils in coral localities around Louisville. Elaborating on the second point, the area I search for coral fossils contains dumpings from an old garbage dump pre-1920s. The dump contained remains from residents coal burners and bins thus small pieces of coal were thrown away. The picture above is of one of the pieces of coal I found.
Coal is an important part of energy generation in the United States. It can be costly in terms of human lives as seen recently when 29 miners died in a explosion at the Upper Big Branch, West Virginia mine. May they rest in peace. That mine produced coal for steel mills. The environment can also suffer from improper mining techniques and unfiltered burning. Work is being done to rectify these issues.
It is a trade-off with electricity being a necessity in today's society. Hydrocarbon energy generation is one of the primary factors that drives the world economy. Coal is an important resource to Kentucky. The material is fossil remnants from the Pennsylvanian Period.
Below are images of four types of coal: lignite (brown coal), sub-bituminous, bituminous (mined in Kentucky), and anthracite. These images were produced from pictures I took of a public display at the Louisville Science Center on coal. Click the images to see larger versions.
According to the 2008 Louisville Science Center report, contributors to the World Around Us: Coal Exhibit Kiosk were International Coal Group, Kentucky Coal Association, Kentucky Department of Energy Development and Independence ($50,000 grant), Peabody Energy ($2,500 grant), and Teco Coal.
Learn more about Kentucky Coal at the education website.
The other images are from a Adobe Flash movie I created illustrating coal formation and its uses in society. I would link to the movie but I lost access to a server that could host swf files. Maybe be one day I remedy this situation.
Labels:
coal,
Kentucky,
louisville science center,
Pennsylvanian
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