- The Legend of Geologic Time?
Is radioisotopic dating a theoretical process? Does it work on historical lava flows (young rocks)? Does diamond formation really require hundreds of millions of years? This intimate forum will rock your wold view as the 20th century notion of geologic time is put on trial! The implications of this radical "young earth" perspective will be examined at our next meetup held the next day at the Nevada State Museum in Carson City using exhibits on plate tectonics and wildly rapid continental drift to explain the previously elusive cause of the last ice age.
- Get the (continental) drift of Plate Tectonics!
Geology/Plate Tectonics: Have you ever wondered how and why mountains form, why there are earthquakes, or why there are volcanoes? At this talk we will discuss Plate Tectonics which is the theory that rigid portions (plates) of the surface of the earth move with respect to each other. Because of this motion, many topological features such as mountains, volcanos, and faults on the surface of earth can be understood. Inside the beautiful Galena Creek Visitor Center, 50 minutes of amazing photos and diagrams from our own rock star, Marvin Katz, drawing on his life long career spanning mining, petroleum and environmental geology will be followed by a brief outdoor discussion of local rock and related mountain building processes (orogeny). Consider bringing a cool drink and hat to supplement the sunglasses for this part.
- Rock talk with the real deal at the perfect place!
• What we'll do In a private meeting room one the second floor of the world class Keck mineralogy museum (https://www.unr.edu/keck) our own rock star, Marvin Katz, will give us a deeper look (than last year) of how geologists identify and classify rocks by mineral content and formation processes in three DIFFERENT two hour sessions. Mr. Katz's career path as a professional geologist spanned several different industries including oil, environmental and mining, but his easy going casual style connects perfectly with our members. Every two hours a different classification/type of rock will be covered per the schedule below. In between you can walk back down stairs to get a guided tour of the W. M. Keck Earth Science and Mineral Engineering Museum from Garrett Baremore, the museum curator. This is Nevada's oldest geology museum and this is the way to see it!! Seating is extremely limited for each rock talk, so any RSVP after the first 30 is strictly on a space available basis! Seating will be by order of RSVP received for each session you specify. If you can't get a seat in the room, you can still take the museum tour at 11 AM or 1:30 PM. In any case we recommend you sign up for Baremore's Mineral Monday at the website above! This museum has never charged for admission and we are not even paying for the early access or the meeting room, or the group tour, so I would ask for generosity as we stroll by their donation box during the tours. • What to bring Notebook, hand lens (loupe), pen and a donation for the museum. Maybe a protein bar if you're missing breakfast, but definitely a sack lunch if you're doing both morning and afternoon sessions. • Important to know There will be three different sessions, one for each type of rock so you must indicate which session(s) you will attend (by start time) as space is limited to 30 in each and this event totally booked out twice a year ago when we had one third our present membership!! The sessions are as follows; 9 AM to 11 AM IGNEOUS (formerly melted) rocks 11:30 to 1:30 SEDIMENTARY (formerly "mud") rocks 2:00 to 4:00 METAMORPHIC (a.k.a. "mushed") rocks
- Nevada Paradox: the driest state's fossil park is a heap of giant fish!
Berlin - Icthyosaur State Park
Check out our destination at http://parks.nv.gov/parks/berlin-ichthyosaur Is there a connection between the recent Great Basin water levels and the concentration of prehistoric marine fossils on a hill side that was supposedly sea floor during the Jurassic? Why are the same fossils found beneath a retreating glacier atop the Chilean Alps? 🗻 Last week we challenged the 20th century notion of geologic time at the Nevada State Museum in the historic Carson City mint. This trip continues that investigation by examining the topography between our state fossil site and the surrounding dry lake beds of pluvial Lake Lahontan. Both are former marine environments, but supposedly separated by 65 million years according to the geologic time scale. 🔍 The fossil shelter is still open weekends for tours at 10 AM and 2 PM. Our 1 PM meet up at the fossil shelter will apply fundamental principals of site forensic analysis to the field evidence that radically challenges the conventional dating of Jurassic fossils. Driving to and from the fossil park we will be on the lookout for evidence of the lapse of 65 million years. For those wanting to camp Friday night at the fossil park (Elev. 6,800 ft) we will meet in route at Grimes Point for sack lunches at noon and again at the historic Middlegate Station at 2PM. In between (Fallon and Middlegate) watch for benching caused by the wave action of prior water levels on the hills to the east. Park admission is $5 and the campsite is $15 (both cash or checks only). For those that have been asking for a mine tour; I haven't been able to confirm these are still available for the Berlin mine, but the ghost town sports over 80 interpretive signs along the dirt road and foot trails.🎒 Call (775)[masked] for ride sharing from Carson City or Fallon.
- Waterboarding a supercontinent and the legend of geologic time!
This meetup is both learning and planning! We'll use the Devonian Sea exhibit to discuss the submerged "waterboarded" super continent and the plate techtonics displays see the subsequent break up of the super continent(s). Use this link to download a free ticket for admission for two to the Nevada State Museum good only on the 22nd; https://www.smithsonianmag.com/museumday/search/?q=&kinds=Science&kinds=Zoos%20%26%20Gardens&kinds=Natural%20History& When the submerged continent resurfaced, marine organisms of all sizes were preserved briefly in interior drainage basins (i.e. the Great Basin in North America). The largest of these would wash ashore in central Nevada to become our state fossil, the 70 foot long Shoshone Ichthyosaurus, hence our tour guide will be wearing a fishing vest and conclude the tour at the Ichthyosaur reproduction display around noon. Our meetup will then finish by laying out the details of our field trip to the state fossil park October 13th at Berlin Ichthyosaur. Afterwards you are free to roam the rest of this museum which was built as the Carson City mint from stones quarried nearby when Nevada was admitted to the union. Both a little noticed display narrative and your drive to the state fossil park will challenge to the traditional view of geologic time; was the Devonian sea epoch really 300 million years ago? If so, where is the observable evidence for the time lapse? Our free tickets are connected with Smithsonian Magazine museum day. Their May issue features China's dinosaur boom; https://www.smithsonianmag.com/science-nature/great-chinese-dino-boom-180968745/ China's Gobe desert has been described as topography untouched since the Jurassic. This image of unbroken dinosaur eggs left unbroken in the mud parallels the Great Basin where our state fossil is found emerging from the surface strata where it beached.
- 🔦 Tour Hidden Cave and see 800+ basalt boulders with ancient petroglyphs! 🔍 🌋
• What we'll do Walk fast to survey this excellent rural museum, then sit for the 9:30 AM short video on Hidden Cave. The actual tour of the cave leaves immediately after the video by heading out to the trailhead which is 1/2 mile up the dirt road that starts at the Grimes Point Archaeological Site 11 miles east of Fallon. The easy 30 minute hike takes us past the first two petroglyphs, and a couple tufa rock shelters then we break into groups of 15 - 20 to enter and tour the normally locked cave. It is thought that the cave formed by wave action during the ice age. The ceiling collapsed later. We'll theorize about what the cave entrance looked like during the Mount Mazama eruption 🌋 whose ash layer is visible in this picture of the excavated strata inside the cave. http://ccmuseum.org/hidden-cave-tours/ For those with sack lunches, we'll regroup back at the Grimes Point picnic tables to eat and report on the prospects for an upcoming mine tour Meetup. By 1 PM we'll break up to take advantage of three nearby attractions; 1) The adjacent petroglyph trail through the extensive and mystifying collection of ancient lake front rock art. http://www.americantrails.org/nationalrecreationtrails/blm/grimespoint-nv.html 2) Head east back up the dirt road in search of wonderstones at wonder Mountain. 3) Drive further east on US HWY 50 to see alluvial fan formations at the mega dune; Sand Mountain https://www.blm.gov/visit/sand-mountain-recreation-area • What to bring: sack lunch, warm coat, comfy walking shoes or boots, and a donation for the museum. 🎒👟💸 • Important to know; don't dally after the movie, stay with us or follow the guide and go immediately to the trailhead for sequencing. If necessary; get fuel before arriving at the museum. To carpool from south Carson City be at the Costco gas pumps by 7:30 AM. 🚙
- Rock talk with the real deal at the perfect place!
• What we'll do In a private meeting room down the hall from the world class Keck mineralogy museum (https://www.unr.edu/keck) our own rock star, Marvin Katz, will give us the basics of how geologists identify and classify rocks by mineral content and formation processes. Mr. Katz's career path as a professional geologist spanned several different industries including oil, environmental and mining, but his easy going casual style connects perfectly with our members. After the basics of rock/mineral identification (and the last of the coffee and donuts), Mr. Katz will show how to read a geologic map (this too is just introductory level). All this wraps up by 11:45 when walk back down the hall to get a one hour guided tour of the W. M. Keck Earth Science and Mineral Engineering Museum from Garrett, the museum curator. This is Nevada's oldest geology museum and this is the way to see it!! Seating will be limited for the 9 AM to noon rock talk, so any RSVP after the first 20 may have to negotiate with coffee and donuts for the last couple seats! If you can't make the rock talk at 9 AM, (let us know when you RSVP) you can still catch the museum tour by being at the main entrance at noon. This museum has never charged for admission and we are not even paying for the early access or the meeting room, or the group tour so I would ask for generosity as we stroll by their donation box at noon. • What to bring A geologic map and/or rock I.D. cheet sheet (or mobile app) if you have one, your notebook, pen and a donation for the museum. Maybe a protein bar if you're missing breakfast ;) • Important to know This (the February meetup) was supposed to be a planning session for a spring field trip tour of an operating mine, but who could pass up this opportunity to hear Katz at the Keck?! Thus, if you have suggestions on that outing, please send them on ahead or bring them with you. Perhaps we'll "do lunch" after the museum tour and choose a mine operator/location. I hear there's one operating in Virginia City, but hands on at the Peacock mine is still a possibility for the camping capable.
- Come meet up with Sue, the largest and best preserved T. rex ever discovered!
Terry Lee Wells Nevada Discovery Museum
• What we'll do Meet up with Sue before she leaves town next week! Only four T. rex specimens containing more than 60 percent of their original skeleton have ever been found. Sue is 90 percent complete — only a foot, one arm, and a few ribs and vertebrae are missing. The specimen was found by fossil hunter Sue Hendrickson in the Hell Creek Formation near Faith, South Dakota. In 1997, the Field Museum purchased the supposedly 65-million-year-old fossil at auction for $8.4 million, setting the record for the world’s highest price ever paid for a fossil. • What to bring $5 for venue admission and your dino safari shirt for this once in a lifetime photo op! • Important to know Dating Jurassic material in the 20th century was always an indirect process using a different strata since fossils aren't found in the igneous rock subjected to isotopic dating. Come hear how this changed with the 21st century Accelerator Mass Spectrometer!
- See Tufa formations at Pyramid Lake
Our next adventure is at Pyramid Lake to see some amazing tufa formations. • 1st Stop: Chevron Gas Station in Sparks (Chevron, 8995 La Posada Drive, Sparks, NV) to obtain the necessary permits to walk around on Indian lands. We'll leave Chevron around 9:30am and head to Pelican Point for a brief stop. • 2nd Stop: Next, we'll drive 5-10 min. north of Nixon to look at a tufa formation that's accessible by an easy dirt road. There might be a third stop depending on the weather and input added by some of our members who are doing research on the area. For more info, see USGS survey: (https://pubs.usgs.gov/fs/2004/3044/pdf/2PTufasFS.pdf) *Photo of the tufa at Pyramid Lake by Andrew: (https://www.flickr.com/photos/wildlasvegas/6067024515) NOTE: For anyone traveling from Tahoe or Carson/Minden, we will be at the Carson City Costco Gas pumps at 8am to carpool.
- Planning session for November 18th tour of tufa formations nearby
Let's meet up at Starbucks again to chat about our next adventure. The tufa stone forms from mixing different mineral rich waters in crystal branching varieties according to climatic conditions at that time, thus leaving an intriguing record of previous water levels. Since several of our stops will be on tribal lands at or near Pyramid lake, this logistics planning session will make sure our members get the necessary permits Saturday morning at our first meetup site. We'll also have a chance at this Starbucks meeting to greet new members and recap our October field trip to the Carson Pass "roof Pendants". The November 18th tufa tour will draw heavily from the USGS circular #1267.