Happy Easter

Happy Easter everyone! This picture is of an Easter egg I created with the help of my nephews while trying to demonstrate to them how to make a multi-colored egg.

Looking at this egg, reminds one of the age old conundrum, "Which came first the chicken or the egg?"  Well, this link goes to the Live Science website with a story entitled, "Which Came First? Eggs Before Chickens, Scientists Now Say" by Jeanna Bryner.  It discusses the research of Francois Therrien, curator of dinosaur paleoecology at the Royal Tyrrell Museum in Alberta, Canada and Darla Zelenitsky, a paleontologist of the University of Calgary in Alberta.  They studied a fossilized nest of eggs of small theropods.

Picture of an Easter lily growing in our flower garden in Louisville, Kentucky in a past growing season.

Unknown Ordovician Tube Fossil

This rock plate was found in Carroll County, Kentucky in the Kope Formation. It has a 3 cm long tube like fossil that I cannot identify. The fossils in the rock date to the Ordovician Period.

[UPDATED: Thanks to Solius to pointing out an error in this post, the fossil was not from Franklin County, Kentucky. Also magnified images have been added.]

Magnified 40x using microscope of both ends of the trace fossil and a sample shot of the mid-section.

Kentucky Marble

This post is not about a fossil but a type of limestone found while studying fossils in the Kentucky River area near Frankfort, Kentucky.  Researching this rock I found an interesting book, The Kentucky River by William E. Ellis published in 2000, The University Press of Kentucky. Pages 49-50 provides a very nice description:

One of the finest is "Kentucky River Marble," a crystalline magnesium limestone, or dolomite, from the Oregon Formation. Real marble is a metamorphic rock. Sedimentary rock from the Oregon Formation has been used for Daniel Boone's Monument and the old State Capitol in Frankfort and for Henry Clay's Monument in Lexington Cemetery. This stone takes on a polish like true marble.

These three middle images are of pieces I cut with the diamond saw and then polished with 400, 800, and 1000 grit wet sandpaper.  Last, I used a rubbing compound for a final finish.

Another document found on KET's website is a Teacher's Packet entitled Kentucky-Based Natural Resources by Dr. Frank Ettensohn in 2001.  Dr. Ettensohn is a professor of geological sciences at the University of Kentucky.  On page 8 of the packet, he describes Kentucky marble:

Highbridge Group: White to tan, massive, dense limestones and dolostones, which are late Middle Ordovician in age, that occur below the Lexington Limestone, usually in the gorge of the Kentucky River. These are the oldest exposed rocks in the state, and some of them have a peculiar tan, gray and white color mottling that is described as "Kentucky River Marble" when used as building stone.

I tried cutting this piece into a cube with not so much accuracy.

Another publication makes mention of Kentucky marble, The Register of the Kentucky Historical Society, Volume 6 by the Kentucky Historical Society (from 1908) page 54:

The "Birdseye" limestone, which is generally known in Kentucky, as the Kentucky river marble is found in large quantities, it is a most excellent building stone, the Capital Hotel, the Farmer's Bank, the walls of the State Penitentiary at Frankfort and the the old State Capitol, erected in 1829, are built of this marble. It is susceptible of a fine polish but the fact that it is so extremely hard and flint like, it will never become popular as a building material, where a polished surface is required. It is called "Birdseye" because of the small specks which look like glass or bird eyes and which are found all through this stone, these bird eyes can be more readily seen when the stone is freshly broken.