ESCONI Gem, Mineral, and Fossil Show

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Field trips require membership, but visitors are welcome at all meetings!

Friday, April 10thGeneral Meeting – 8:00 PM via Zoom.

Jessica Hull will present “Life in the Devonian Period, The Age of Fishes.”
Saturday, April 11thJunior Study Group Meeting – 2:00 PM, in person at the College of DuPage Technical Education Center (TEC) Building – Room 1038A (Map).

Katherine Howard will present on Sand and Sediment Collecting.

Specifics of this meeting are available from Scott Galloway, 630-670-2591,  gallowayscottf@gmail.com.
Saturday, April 18thPaleontology Study Group – 7:30 PM via Zoom and in person at the College of DuPage, TEC, Room 1038B (Map).

Keith Robitschek will present “Digging the Marl of the Lance Formation.”
No meeting this monthMineralogy Study Group
No meeting this monthJunior Study Group
  • A Very Good Collecting Day “We Hit The Jackpot”

    Via ABC News, (hat tip Carrie Nelson) … The Barrieaults went to Hill’s mine on the group trip with the Mountain Area Gem and Mineral Association. They had only been in the mine for five minutes before Kevin flipped over a rock to find a 50.5-carat emerald… More

    Read more: A Very Good Collecting Day “We Hit The Jackpot”
  • Events in April, 2012

    Events in April, 2012

    Fri. 4/27 ESCONI Fossil Field Trip, St. Paul, Indiana – meet at the quarry office by 7:45 am (6:45 am Chicago time). Normal safety equipment is needed – hard hat, protective boots, eye protection. To get to the office take I65 south around Indianapolis to 174. Exit and Exit 123 go south to Michigan Av. right to N. County Road 800 W left following signs to St. Paul. Go through the town over the railroad tracks past town, ending up on Mound Rd, to office on right. Indiana state law that no one under 18 is allowed in quarries. Fri. 4/27…

    Read more: Events in April, 2012
  • 19th Century Women in Geology

    Via Scientific American: … Girls and women working in the field were tolerated in the social lower classes, like professional fossil collector and dealer Mary Anning (1799-1847) of Lyme Regis (Dorset), daughter of a craftsman, but for upper-class women engaging in field research was almost impossible. Women could minimize these “problems” by collecting fossils and studying rocks in their local environment, for example on private property or in the surroundings of their home, where their social status was known and such behaviour regarded as eccentricity and somehow tolerated. …

    Read more: 19th Century Women in Geology
  • Trace Elements Play Part in New Theory on Crust Formation

    Via PhysOrg: … The oceanic crust did not have to descend Using computers, the scientists simulated the composition of bedrock and molten rock that would emerge from partially melting the oceanic crust at various depths and temperatures. They then compared the data calculated for the molten rock with the actual concentration of trace elements in the oldest continental rocks. “Our results paint a surprising picture,” Dr. Nagel reports. “The oceanic crust did not have to descend to a depth of 100 kilometers to create the molten rock that makes up the rocks of the first continents.” According to the calculations, a…

    Read more: Trace Elements Play Part in New Theory on Crust Formation
  • Please Return Rocks and Only Take As Many As You Need

    Please Return Rocks and Only Take As Many As You Need

    Via The Onion: A coalition of geologists are challenging the way we look at global stone reserves, claiming that, unless smarter methods of preservation are developed, mankind will eventually run out of rocks. “If we do not stop using them up at our current rate, rocks as we know them will be a thing of the past,” renowned geologist Henry Kaiser said at a press conference Tuesday. “Igneous, metamorphic, even sedimentary: all of them could be gone in as little as 500,000 years.”… Geologist Victoria Merrill, who has been at the forefront of the rock conservation battle since 2004, said…

    Read more: Please Return Rocks and Only Take As Many As You Need
  • Paleo Dream Job – Paleoartist, Tyler Keillor

    Via Scientific American a fascinating interview: Tyler Keillor (pronounced “KEEL-er”) is a soft-spoken, understated paleoartist whose work is anything but. He works at the University of Chicago as a paleoartist, reconstructing creatures that paleontologist Paul Sereno excavates on his expeditions around the world… … Do you have a favorite project you’ve worked on? (pics, please!!) The majority of my projects so far have represented new species, so each one has had its own very special set of challenges – artistic and technical – and so in their own ways each project became my favorite at the time I was working on…

    Read more: Paleo Dream Job – Paleoartist, Tyler Keillor
  • Fossil Hunting on the Shores of Lake Erie

    From Magma Cum Laude via geology.com – How to collect fossils on the shores of Lake Erie – corals, trilobites, brachiopods… The weather has been freakishly nice for March in Buffalo, so yesterday I decided to chuck any ideas of getting work done and went fossiling with a friend instead. The area where I live sits right on top of the Devonian Onondaga limestone, so I’m already surrounded by a very fossiliferous unit (it’s full of things like coral and brachiopods and crinoids). But for a special locale, it’s worth it to head down to Eighteen Mile Creek, which flows…

    Read more: Fossil Hunting on the Shores of Lake Erie
  • Torosaurus Discussion in MSM

    Interesting letter written for NYTimes in response to article “Triceratops’ Quiet Cousin, the Torosaurus, Gains New Legitimacy” (March 6) … The study by Nicholas Longrich and Daniel Fields falls short because cranial fusion cannot be confirmed by simple observation. High-resolution computer tomography and comparative cranial histology are required. Dr. Longrich and Mr. Field leave out skulls in their study that do not support their conclusions or… more

    Read more: Torosaurus Discussion in MSM
  • Horse Evolution

    Article Via Geology.com from NSF: View a video showing how body size of mammals was affected by global warming. When Sifrhippus sandae, the earliest known horse, first appeared in the forests of North America more than 50 million years ago, it would not have been mistaken for a Clydesdale. It weighed in at around 12 pounds–and it was destined to get much smaller over the ensuing millennia. Sifrhippus lived during the Paleocene-Eocene Thermal Maximum (PETM), a 175,000-year interval of time some 56 million years ago in which average global temperatures rose by about 10 degrees Fahrenheit…. more  

    Read more: Horse Evolution
  • Archaeology Field School – Kansas, June 2 – 17

    Via the Topeka Capital Journal: The Kansas Historical Society and the Kansas Anthropological Association will hold the annual Kansas archeology training program field school June 2-17 at the Kansa site of Fool Chief’s Village on the north side of Topeka, according to a news release. The Kansa site was selected because of a road project at US-24 highway and N.W. Menoken Road, which will have a negative impact on the site. The Kansas Historical Society, under contract with  the Kansas Department of Transportation and under the direction of the Federal Highway Administration, will carry out a data-recovery program to mitigate adverse…

    Read more: Archaeology Field School – Kansas, June 2 – 17
  • 34th Mid America Paleontology Society Show This Weekend!

    Nice article about the MAPS Expo via the Canton Daily Ledger: The National MAPS Show returns to Western Illinois University-Macomb Friday-Sunday, March 30-April 1. This year’s theme is the Pennsylvanian Period. The expo, tagged the world’s largest fossil-only show, will be held in Western Hall from 8 a.m.-5p.m. Friday- Saturday, March 30-31 and from 8 a.m.-12 p.m. Sunday, April 1. Admission and parking are free. The annual Fossil Expo brings dealers, exhibitors and fossil enthusiasts from across the nation to view, sell and purchase fossils. At 5:15 p.m. Friday, keynote speaker Scott Elrick will present, “Geologic Secrets of Illinois’ Fossil Rain Forest.”…

    Read more: 34th Mid America Paleontology Society Show This Weekend!
  • Copper Mining in the News

    Copper Mining in the News

    Arizona Geology clues us into two recent articles about copper mining in Arizona. Image: Photos above by Lee Allison, Director of AZGS and Arizona State Geologist via the Arizona Geological Survey. The article with this photograph provides an interesting discussion about the geology of Arizona copper. 

    Read more: Copper Mining in the News
  • AGI’s Earth Science Week Update Newsletter

    Some highlights of the Earth Science Week Newsletter: Meg Town, a teacher at Redmond Junior High School in Redmond, Washington, has been named the 2012 recipient of the Edward C. Roy, Jr. Award for Excellence in K-8 Earth Science Teaching. Town, who earned her master’s degree in education from the University of Washington, has spent her career challenging middle and junior high school students with inquiry-based, hands-on learning in the Earth sciences. Earth science is, she says, “the most touchable science.” The winter issue of AGI’s GeoSpectrum, the geosciences newsletter, is now available online. This issue’s highlights include a full…

    Read more: AGI’s Earth Science Week Update Newsletter
  • Geology of Asteroid Vesta

    Via ScientificComputing: NASA’s Dawn spacecraft has revealed unexpected details on the surface of the giant asteroid Vesta. New images and data highlight the diversity of Vesta’s surface and reveal unusual geologic features, some of which were never previously seen on asteroids. These results were discussed on March 21, 2012, at the Lunar and Planetary Science Conference at The Woodlands, TX…. … “Our analysis finds this bright material originates from Vesta and has undergone little change since the formation of Vesta over four billion years ago,” said Jian-Yang Li, a Dawn participating scientist at the University of Maryland, College Park. “We’re…

    Read more: Geology of Asteroid Vesta
  • Explanation for Opisthotonus?

    Via Discover Magazine: … Paleontologists have long wondered by so many fossilized dinosaurs have their necks contorted into painful-looking positions—the phenomenon even has a name: opisthotonus. Various hypotheses have suggested the dinosaurs died in pain, or that their unusual posture is from rigor mortis. Could be, though, it’s just what floppy necks do in water, according to a recent study involving chicken carcasses…. More

    Read more: Explanation for Opisthotonus?
  • New Archaeological Lab at McMaster University, Canada

    From TheSpec (includes interesting video): … Thursday marked the official opening of McMaster’s Archaeological XRF Lab, or MAX Lab, for short. It’s the first research centre in Canada to use a special non-destructive technology to determine what ancient artifacts are made of. The centrepiece of the lab is a nearly $100,000 piece of equipment that uses X-rays to match an object’s chemical fingerprint to a geological sample…. more  

    Read more: New Archaeological Lab at McMaster University, Canada
  • Our Long Last Ancestor?

    After listening to Dr. Fred Smith, Illinois State University about homo sapiens neanderthalis at Burpee Museum’s Paleofest,  This new article made much more sense!  Via Scientific American: First of Our Kind: Could Australopithecus sediba Be Our Long Lost Ancestor?  

    Read more: Our Long Last Ancestor?
  • Looking Forward to Next Year’s Show

    Thank you to all who volunteered time to help on the show – before, during or after – all in different ways! Members’ are what makes the show possible and extraordinary! 

    Read more: Looking Forward to Next Year’s Show
  • 2012 ESCONI Gem, Mineral and Fossil Show – March 17 & 18

    Yea!!! It is time for the annual show!!!   Articles in the Chicago Tribune.  Come out to see new fossil  and mineral finds being sold by vendors and at auction, one-of-a-kind hand-made jewelry, gorgeous and amazing mineral specimens and beads! Demonstrations of jewelry making and geode cracking and collections from private collectors as well as the Field Museum of Natural History and the Lizzadro Museum. Also, one always finds great books and magazines at the Used Book booth and beautiful plants from COD at the plant booth! Kids activities all day long both days. Kids get free geode – as…

    Read more: 2012 ESCONI Gem, Mineral and Fossil Show – March 17 & 18
  • Reminder: ESCONI Volunteers Needed This Weekend

    Please volunteer your time to set up or take down the show – especially the end of the show! Your time will be greatly appreciated!

    Read more: Reminder: ESCONI Volunteers Needed This Weekend