Andrew’s blog is great — and one you really need to see about this visit to Fort Hill. We have linked to his blogs a couple of times previously. Here is the site
As you read his blog, you might be tempted to say something like: “Wow, what a neat natural area! I understand it is one of Ohio’s 25 National Natural Landmarks, but it should also be dedicated as a State Nature Preserve, don’t you think?” Well, if everything falls together, perhaps in July, Fort Hill is planned to be dedicated as the newest of our Dedicated State Nature Preserves. It is certainly worthy of the honor and the added legal protection for this magnificent, semi-wilderness area (in an “eastern wilderness” sense). If you’ve not hiked there recently, you better plan a trip soon. Wildflowers are exploding right now along the Gorge Trail and throughout the preserve.
Bob Glotzhober, Curator Emeritus, Natural History
Several readers correctly pointed out that these could be used as beads! These are discs from the stem of a crinoid. You might remember that we featured the odd-looking “holdfast” that some species of crinoids used as a way to anchor to the sea floor, in a Freak of the Week from last November. To refresh your memory, and to learn more about crinoids, go to that post at: http://apps.ohiohistory.org/naturalhistory/its-a-crinoid-answer-to-the-freak-of-the-week-6/
The stem of a crinoid is made up of many individual columnals, or discs, which are linked together by ligaments. After the animal dies they usually become disarticulated and are preserved as short stems or individual pieces. These were brought to us from Bill Pickard of OHS Archaeology and were screened from a large amount of soil at a historic site in western Ohio. The archaeologists said these weren’t associated with other artifacts at the site and are probably just naturally occurring in the soil. Crinoids are relatively common in the exposed bedrock of western Ohio, and stem fragments often weather out and are found in gravel or soil.
And they certainly have been used as beads! This is true in the midwestern of the United States, where they are fairly common, and in other parts of the world. In medieval Northumberland, England the discs would erode from sea cliffs and end up on the beaches of the small island of Lindisfarne, where St. Cuthbert was a monk. They were strung together as necklaces or rosaries and became known as St. Cuthbert’s Beads, a term that is still used today. In other parts of England the round columnals were called “fairy money”.
Keep your eye out for these ancient fossils on your next outing! In fact, a well known site for collecting invertebrate fossils is right here in Ohio! Hueston Woods State Park, just north of Oxford attracts people from all over the world because of the large number and quality of the fossils that can be found.
In honor of the 100th posting on the Natural History blog, let’s look at some very small objects – small enough that you probably could fit 100 of them on the face of a quarter! So what are these? (The small objects, not the dime!) They were recovered from an archaeological site in western Ohio, however they are natural objects and were probably just in the soil at the site but not related to the human occupation. They may appear at first like beads but they are not.
Notice the interesting shapes of the center holes too. This photo shows the star pattern in the largest of the objects. Also, if you look closely at the small disc in the center of the photo above, you will see a similar star shape. Put your best answer in the Reply box below.
Congrats to Bob, Dale, and Sarah who all knew that this is fulgurite, also known by some as “petrified lightning”! Fulgurites occur when lightning strikes sand or soil, and instantly fuses the substrate into glassy tubes. The lightning has to be very hot too, at least 1800 degrees C (3270 degrees F). That’s hot! In this case, the lightning hit sand on a beach or desert and formed these tubes in the shape of the electrical current. The outside of these tubes has a rough sandy appearance and is made up of grains of sand fused by the heat. The interior of the tubes is smooth and glassy and sometimes is lined with small bubbles. Fulgurites can vary in size but generally can be as long as about 15 feet. But Charles Darwin recorded one in Cumberland, UK as long as 30 feet! Fulgurites can also form when high voltage cables fall and land in a sandy surface.
They can be found around the world and have been recorded on beaches, in deserts, and sand dunes. A different type of fulgurite can form when lightning strikes solid rock, such as on top of a mountain, where it can leave a beautiful glazed pattern or crust on the rock. I once saw a lightning bolt strike right in front of me when hiking near the barren summit of Mt. Whitney in California (good thing that I’m a slow hiker!). Fulgurites of various sizes have been reported as relatively common on or near rocky mountaintops in the western United States. From now on, these fulgurites are as close as I want to get to lightning!
Well, here’s a freaky one for you! It was a hit on some recent behind the scenes tours so I thought it would be a fun Freak of the Week. This specimen has no data with it and is probably not from Ohio, but it could be. Note from the ruler in the photo that the largest one is about 10 inches long. The outside has a sandy, grainy texture and the structure is basically a hollow tube. Any ideas!? Put your best guess in the Reply box below and I’ll give the correct answer in a few days. If there are no correct guesses soon, I can give a clue or two if needed!
“One of Ohio’s last major unprotected mound groups is threatened with destruction: the Junction Group in Ross County. The Junction Group is a collection of nine small-to-medium-sized earthen enclosures built in various geometric shapes by American Indians now known as the Hopewell Culture about 2,000 years ago. This mound group includes Ohio’s only known quatrefoil – a very rare if not unique four-leaf clover shaped enclosure. The Arc of Appalachia (AoA) and Heartland Earthworks Conservancy (HEC) have partnered and are leading the charge to save the Junction Group but they need your help.”
“On Tuesday, March 18, the Junction Group, located at the southwest edge of Chillicothe – on the Stark family farm, will go to auction and is in danger of being destroyed by future development. $500,000 needs to be raised by the community in order for the AoA and HEC to receive the matching gifts necessary to purchase, preserve, and protect the Junction.”
Do we really want this significant mound group to be lost to yet another development!? This site is on the edge of Chilicothe and is imminently threatened with purchase and development. And when I say this is going to down to the wire, I’m not exaggerating. Note that the auction for this property is Tuesday, just four days away! They have made major progress in raising the needed funds in the only 18 day campaign, but as we get to the last few days more pledges are needed to reach the goal and save the mound group!
Follow this link to the Archaeology Blog and learn how you can help TODAY! http://apps.ohiohistory.org/ohioarchaeology/major-prehistoric-ohio-mound-group-in-danger-you-can-help/
A post from Bob Glotzhober, Emeritus Curator of Natural History:
The Minnesota author and naturalist/philosopher, Sigurd Olsen, wrote (paraphrased here as close as I can remember) “one can only truly appreciate spring after one has experienced a northern Minnesota winter.” Ohio (and much of the US) has come close to that this winter — so perhaps we’ll really, really appreciate spring this year. But like Minnesota springs tend to “explode” – with a flash flood of wildflowers irrupting like miniature volcanoes once the snow and cold finally leave! Might Ohio’s spring be less drawn out than usual, and explode upon us this spring too?
On Tuesday (3/11), Bill Schultz and I hiked the Gorge at Fort Hill State Memorial (Highland Co., OH). What a beautiful day! Temps at least 65 in the afternoon — and sweatshirts off and my sleeves rolled up. We saw four Bluebirds in the woods along the Bench — lots of other neat things. Wood Frogs were quacking; Turkey Vultures soaring, Carolina Wrens bolding singing (really echoing loud in the gorge), and perhaps a dozen different Phoebes were buzzing their “Fee-buzz” songs.
However, our goal was to see the Snow Trillium — which can typically be seen here in March. After 34 years of hiking the trails at Fort Hill, I know of at least three reliable spots to find Snow Trilliums. These are on top of promontories, with cliffs overlooking the waters of Baker Fork. Here the soils are thin on top of Peebles Dolomite, producing the alkaline/limestone soils that Snow Trilliums love. None were seen! The cold, cold, winter is continuing its effect on the advent of spring. Some of the early spring birds are back. But no Snow Trillium.
Here is a possible result. Once the Snow Trilliums do bloom (another week or more?) they might be quickly followed by Hepatica, then a wealth of other blooms pushing up in a compacted, rushed explosion of blooms. Will it be an explosive spring blooming season, or will the cool weather continue and things just all be pushed back and delayed? Only time will tell, but I’m betting on an explosive spring. If spring explodes this year, you better be ready to get out and enjoy those wildflowers when you can!
Of course the fusion of epiphyses only provides a relative age of the individual and is more of an indication of skeletal maturity than chronological age. And to make it more confusing, epiphyses on different bones fuse at different ages in one individual! But it does give you a pretty good idea of the approximate age of the animal. In the case of this bear, the epiphysis is unattached from the body of the vertebra (top photo) but I put it in place on the bottom photo so you can see where it fits. Sure enough, when I check the records, this bear was listed as a “young male” who was hit by a car. Skeletally, we would call it a sub-adult since it reached adult size but the skeleton wasn’t completely mature.
By the way, there are different types of vertebrae in the body, and each type has different characteristics. This particular vertebra is a lumbar vertebra, or vertebra of the lower back. The heart-shaped epiphyses were only found on some of the lumbar vertebra of this bear.