Upcoming events

    • 19 Mar 2024
    • 10:30 AM - 2:30 PM
    • Sand Ridge Trailhead, Crooked River Ranch
    • 0
    Join waitlist


    Derek Loeb

    Second Session Added

    Hydromagmatic Pinnacles of the Steelhead Falls Area

    Geo-Exploration, Second Session

    Led by Nancy Wildman and Derek Loeb

    Tuesday, March 19

    10:30 AM-2:30 PM

     

    Join Nancy Wildman and Derek Loeb for a geo-exploration of the Hydromagmatic Spires of the Steelhead Falls area.  The trip will begin and end at the Sand Ridge trailhead in Crooked River Ranch.   The parking area at this trailhead is limited to about 5 vehicles so ride sharing is encouraged but per COGS policy is completely voluntary.

    This trip is the complement to the Steelhead Falls Geo-Exploration of last March.  We will be looking at some of the same Hydromagmatic Pinnacles we did last year but our vantage point will be from the rim where we can gain a different and revealing perspective.  We will also have a good opportunity to see and discuss the Deschutes Formation and the much younger intracanyon Crooked River Gorge basalt.

    The rim view allows for an easier approach with a total distance walked of about 2.5 miles with only minimal elevation change.  Most of the trip will be on trail but there is some off trail hiking over fairly easy terrain.  Footwear with good traction is recommended and bring hiking poles if you find them helpful. 

    This is a typically drier and warmer area but because it is still winter, this trip will be weather dependent.  The 10 day weather forecast for this area is encouraging.   Depending on precipitation, some portions of the trail may be muddy.  This is a Wilderness Study Area so trip participation is limited to 12 people.  Bend area participants may meet at Cascade Village Shopping Center, between PetsMart and Ashley Furniture, to ride share or caravan to the trailhead.  Please be there at 9:30 AM and let me know you will be there.  Please contact Derek Loeb at DerekLoeb@gmail.com  with any questions.

    Registration must be done via the registration button on the trip listing on the COGS website.  Successful registration will be confirmed on the webpage by a light green box indicating registration was successful and by a confirmation email.  If you don't get this email you should try the registration process again.  If the trip is full, please join the wait list as this is the best option for getting on the trip.




     


    • 26 Mar 2024
    • 5:30 PM
    • Online and in-person at Bridge 99 Brewery

    Mike Darin

    Oregon Department of Geology and Mineral Industries

    Click HERE to register for Zoom 


    5:30 pm social hour

    7:00 pm presentation


    Society’s focus on renewable energy sources and electric vehicles has created a surge in demand for lithium, which plays a vital role in supporting the transition to a low-carbon transportation infrastructure and mitigating the impacts of climate change. McDermitt caldera straddles the SE Oregon-Navada border and hosts the largest known lithium resource on Earth. In this talk, we’ll discuss the geology of McDermitt caldera, how lithium deposits form in general, and the recent surge in federal funding for critical mineral research.


    Please join us at Bridge 99 Brewery:

    63063 Layton Avenue, Bend

    5:30 pm social hour

    7:00 pm presentation

    COGS talk are free and open to the public -- all are welcome! Please join us for the social hour before the presentation.

    All presentations are also live-streamed through Zoom. There will be a registration link at the top of this page as we get closer to the date of this presentation.

    • 23 Apr 2024
    • 5:30 PM
    • Online and in-person at Bridge 99 Brewery

    Joan Fryxell

    California State University, San Bernardino






    5:30 pm social hour

    7:00 pm presentation


    The Miocene Horse Camp Formation is exposed in the Horse Range, the eastern bounding range to Railroad Valley, NV, where oil has been produced since 1955. These sedimentary rocks are tilted up to 70°, as well as being folded. They sit on a stack of Oligocene volcanic rocks, which appear to predate extensional faulting in the area. This Miocene basin is well-exposed, providing an excellent natural laboratory for exploring the interaction of basin formation and faulting.


    Please join us at Bridge 99 Brewery:

    63063 Layton Avenue, Bend

    5:30 pm social hour

    7:00 pm presentation

    COGS talk are free and open to the public -- all are welcome! Please join us for the social hour before the presentation.

    All presentations are also live-streamed through Zoom. There will be a registration link at the top of this page as we get closer to the date of this presentation.

    • 28 May 2024
    • 5:30 PM
    • Online and in-person at Bridge 99 Brewery

    Anders Carlson

    Oregon Glaciers Institute










    5:30 pm social hour

    7:00 pm presentation


    During the last ice age an ice cap covered much of the Oregon Cascade crest, with a north-south length roughly between that of the modern Northern and Southern Patagonia ice caps. Oregon’s ice cap stands out from other late Pleistocene ice bodies in the western United States in that its deglacial history is largely unknown. Here, we will present new Helium-3 surface exposure ages for the ice cap collected from the Three Fingered Jack and Middle Sister regions. These ages will directly date when it retreated from its last glacial maximum extent and then paused to deposit moraines close to late Holocene/historical moraines. This new chronology will allow us to relate ice-cap change to regional climate change as recorded in marine and cave temperature records. We will also have new Helium-3 ages for potential prehistoric late-Holocene moraines just outboard of historic moraines from Hayden Glacier on Middle Sister and Eliot Glacier on Mount Hood. In sum, these new ages will expand the record of cryospheric change in Oregon from less than the last 150 years, to likely more than the last 20,000 years.




    Please join us at Bridge 99 Brewery:

    63063 Layton Avenue, Bend

    5:30 pm social hour

    7:00 pm presentation

    COGS talk are free and open to the public -- all are welcome! Please join us for the social hour before the presentation.

    All presentations are also live-streamed through Zoom. There will be a registration link at the top of this page as we get closer to the date of this presentation.

    • 8 Jun 2024
    • 9:30 AM - 4:30 PM

    Osher Lifelong Learning Institute (OLLI) announces a Field Trip led by Dr Daniele McKay on the Volcanic Deposits in the Bend and Tumalo Area.

    Click HERE for more details

    • 24 Sep 2024
    • 5:30 PM
    • Online and in-person at Bridge 99 Brewery

    Diego Melgar

    University of Oregon










    5:30 pm social hour

    7:00 pm presentation


    In this presentation we’ll explore a major question about the 1700 Cascadia earthquake: Was it one big earthquake, or a series of smaller ones happening close together in time? Understanding this is crucial for forecasting future earthquakes and tsunamis in the Cascadia region. Here we’ll use computer models to examine the different possibilities, using extensive historical earthquake data to rule specific scenarios as likely or not. In the end, we’ll conclude that we can't be certain if the 1700 earthquake was a single event and that the possibility that it was a sequence of earthquakes needs to be considered as equally likely.


    Please join us at Bridge 99 Brewery:

    63063 Layton Avenue, Bend

    5:30 pm social hour

    7:00 pm presentation

    COGS talk are free and open to the public -- all are welcome! Please join us for the social hour before the presentation.

    All presentations are also live-streamed through Zoom. There will be a registration link at the top of this page as we get closer to the date of this presentation.

Past events

15 Mar 2024 Oregon Origins Project IV: Convergence
14 Mar 2024 Hydromagmatic Pinnacles of the Steelhead Falls Area Geo-Exploration
1 Mar 2024 Oregon Society of Soil Scientists Annual Meeting
27 Feb 2024 How, Why and Where Earth Melts
24 Feb 2024 Ben Millers Stand-Up Science Hosted by Liam Gibler
13 Feb 2024 AWG-PNW Monthly Meeting
9 Feb 2024 Geological Society of the Oregon Country Monthly Lectures
25 Jan 2024 USGS Public Lecture Series
23 Jan 2024 Onset and impacts of the c.7700 ybp eruption of Mount Mazama, Oregon
12 Jan 2024 Geological Society of the Oregon Country Monthly Lectures
28 Nov 2023 Hydrology of High-Desert Springs in Eastern Oregon
12 Nov 2023 Second Sesson Added: Fryrear Canyon Geo-Exploration II
5 Nov 2023 Fryrear Canyon Geo-Exploration
24 Oct 2023 Sunstones: The Good, The Bad, & The Ugly (in other words, the complex petrogenesis of our state gemstone)
19 Oct 2023 Oregon Origins Project II: Seven Wonders
26 Sep 2023 Live Tour of the JOIDES Resolution
22 Sep 2023 Henkle Butte & Aspen Hollow Geo-Exploration
14 Sep 2023 Geology of Oregon's High Desert
22 Aug 2023 Tour Deschutes (River) Geohydrology Field Trip
23 Jul 2023 Deschutes Formation Field Trip
17 Jul 2023 Two Cascades Field Trip
2 Jul 2023 AWG-PNW Chapter Field Trip Mount St. Helens: Then to Now
24 Jun 2023 Geohydrology of Siver Creek Field Trip, Harney Basin
9 Jun 2023 Columbia Gorge Field Trip
3 Jun 2023 Springs to Sprouts Field Trip
2 Jun 2023 COCC Field Geology - Geology 169: Exploration of the Pacific Northwest
24 May 2023 Smith Rock Geo-Exploration
23 May 2023 Looking down to look ahead: How Oregon’s fossil rodents can help us understand the impacts of past and future climate change
19 May 2023 Oregon Origins Project II: Seven Wonders
5 May 2023 14th Annual Bretz Club Conference & Field Trip:
27 Apr 2023 USGS Public Lecture Series
26 Apr 2023 Session 2: Riley Ranch Field Trip
25 Apr 2023 In the Shadow of Volcanoes
21 Apr 2023 Riley Ranch Field Trip
14 Apr 2023 Geological Society of the Oregon Country Monthly Lectures
6 Apr 2023 UO for Humanity: Earthquake in Turkey & Syria
31 Mar 2023 Session 2: COGS Geo-Exploration: Barnes Butte, Prineville, OR
31 Mar 2023 COGS Geo-Exploration: Barnes Butte, Prineville, OR
30 Mar 2023 USGS Public Lecture Series
28 Mar 2023 The Most Recent Earthquake on the Mount Hood Fault Zone, Oregon: Implications for cascading earthquake, landslide, & flood multi-hazards in the Columbia River Gorge
23 Mar 2023 Oregon State University Hatfield Marine Science Center Research Seminars
21 Mar 2023 Northwest Scientific Association Conference
16 Mar 2023 Oregon State University Hatfield Marine Science Center Research Seminars
15 Mar 2023 Oregon State University Water Resources Engineering Seminar Series
14 Mar 2023 Northwest Geological Society Speaker Program
12 Mar 2023 Steelhead Falls Geo-Exploration - Session 2
11 Mar 2023 Steelhead Falls Geo-Exploration
10 Mar 2023 Geological Society of the Oregon Country Monthly Lectures
9 Mar 2023 Oregon State University Hatfield Marine Science Center Research Seminars
9 Mar 2023 University of Oregon Earth Science Seminars
8 Mar 2023 Oregon State University Water Resources Engineering Seminar Series
3 Mar 2023 Central Washington University Department of Geological Sciences Speaker Series
2 Mar 2023 Oregon State University Hatfield Marine Science Center Research Seminars
1 Mar 2023 Oregon State University Water Resources Engineering Seminar Series
28 Feb 2023 Ancient Soils of Earth and Mars
24 Feb 2023 Oregon State University College of Earth, Ocean, and Atmospheric Sciences Seminars and Lectures
24 Feb 2023 Central Washington University Department of Geological Sciences Speaker Series
23 Feb 2023 USGS Public Lecture Series
23 Feb 2023 Oregon State University Hatfield Marine Science Center Research Seminars
23 Feb 2023 Central Oregon Community College Field Geology - Geology 169: Exploration of the Pacific Northwest
22 Feb 2023 Oregon State University Water Resources Engineering Seminar Series
16 Feb 2023 Oregon State University Hatfield Marine Science Center Research Seminars
16 Feb 2023 University of Oregon Earth Science Seminars
15 Feb 2023 Oregon State University Water Resources Engineering Seminar Series
15 Feb 2023 USGS Earthquake Science Center Seminars
14 Feb 2023 Northwest Geological Society Speaker Program
10 Feb 2023 Geological Society of the Oregon Country Monthly Lectures
10 Feb 2023 Central Washington University Department of Geological Sciences Speaker Series
9 Feb 2023 Oregon State University Hatfield Marine Science Center Research Seminars
9 Feb 2023 University of Oregon Earth Science Seminars
8 Feb 2023 Oregon State University Water Resources Engineering Seminar Series
2 Feb 2023 Oregon State University Hatfield Marine Science Center Research Seminars
1 Feb 2023 Oregon State University Water Resources Engineering Seminar Series
27 Jan 2023 Big Blue Film Fest
26 Jan 2023 Deschutes River Conservancy - Raise the Deschutes Seminar Series
26 Jan 2023 USGS Public Lecture Series
26 Jan 2023 Oregon State University College of Earth, Ocean, and Atmospheric Sciences Seminars and Lectures
26 Jan 2023 Oregon State University Hatfield Marine Science Center Research Seminars
26 Jan 2023 University of Oregon Earth Science Seminars
25 Jan 2023 Oregon State University College of Earth, Ocean, and Atmospheric Sciences Seminars and Lectures
25 Jan 2023 Oregon State University College of Earth, Ocean, and Atmospheric Sciences Seminars and Lectures
25 Jan 2023 Oregon State University Water Resources Engineering Seminar Series
24 Jan 2023 The ancient magnetic field: Clues hidden in lava flows from around the world
24 Jan 2023 Oregon State University College of Earth, Ocean, and Atmospheric Sciences Seminars and Lectures
20 Jan 2023 Central Washington University Department of Geological Sciences Speaker Series
13 Jan 2023 Geological Society of the Oregon Country Monthly Lectures
11 Jan 2023 USGS Earthquake Science Center Seminars
9 Jan 2023 High Desert Museum Natural History Pub: Volcanoes of Central Oregon
4 Jan 2023 USGS Earthquake Science Center Seminars
10 Dec 2022 Timefulness: How thinking like a geologist can help save the world
7 Dec 2022 Portland State University Geology Seminar Series
7 Dec 2022 USGS Earthquake Science Center Seminars
2 Dec 2022 Central Washington University Department of Geological Sciences Speaker Series
30 Nov 2022 Oregon State University Water Resources Policy & Management Seminar Series
30 Nov 2022 University of Oregon Earth Science Seminars
30 Nov 2022 Portland State University Geology Seminar Series
30 Nov 2022 USGS Earthquake Science Center Seminars
23 Nov 2022 Oregon State University Water Resources Policy & Management Seminar Series
22 Nov 2022 The development of the science of geology and the growth of the railroad industry: How geology played a significant role in railroads of the Pacific Northwest
18 Nov 2022 Central Washington University Department of Geological Sciences Speaker Series
17 Nov 2022 USGS Public Lecture Series
16 Nov 2022 University of Oregon Earth Science Seminars
16 Nov 2022 Oregon State University Water Resources Policy & Management Seminar Series
16 Nov 2022 Portland State University Geology Seminar Series
16 Nov 2022 USGS Earthquake Science Center Seminars
9 Nov 2022 Oregon State University Water Resources Policy & Management Seminar Series
9 Nov 2022 University of Oregon Earth Science Seminars
9 Nov 2022 Portland State University Geology Seminar Series
9 Nov 2022 USGS Earthquake Science Center Seminars
2 Nov 2022 What's under a volcano and how do we know?
26 Oct 2022 Mafic Volcanism!
25 Oct 2022 The Rock Bottom of Antarctica’s Food Chain
14 Oct 2022 GSOC Monthly Presentation: "Iron Dream" — The by-gone industrial age of Lake Oswego's pig iron-producing blast furnaces and the bog ore mines
14 Oct 2022 Oregon Lakes Association Conference
11 Oct 2022 NWGS Monthly Presentation: Surf ‘n’ Turf Earthquake Records in the Seattle Fault Zone
10 Oct 2022 Groundwater in Central Oregon: How It's All Connected
30 Sep 2022 Thomas Condon Paleontology Center tour and field work experience
27 Sep 2022 Paleoseismic investigations of Quaternary active faults in the forearc and backarc of the central Pacific Northwest
22 Sep 2022 Evidence of humans in North America during the Last Glacial Maximum
22 Sep 2022 Pacific Northwest Friends of the Pleistocene 2022
22 Sep 2022 Explore the Geology of Harney County
17 Sep 2022 Deschutes Formation and Tumalo Volcanic Center Field Trip
7 Sep 2022 OSSS Summer Field Meeting - Newberry Crater
24 Aug 2022 Melting Glaciers, Failing Dams: The 1966 Debris Flow from No Name Lake Field Trip
5 Aug 2022 Faults in the Strawberry Mountains
1 Aug 2022 Whychus Creek Geo-Exploration
29 Jul 2022 Tobacco Root Geological Society 47th Annual Field Conference
27 Jul 2022 Wake of the Floods: What Extreme Events of the Past Can Tell Us About Flood Impacts, Recovery, and Climate Change in Yellowstone
5 Jul 2022 Tsunami Science: The view from modeling and observations - Webinar
28 Jun 2022 Volcanoes! Travelogue and Science of Two Volcanic Arcs
26 Jun 2022 Lava Cast Forest Field Trip
14 Jun 2022 Fidalgo Ophiolite Revisited: A Late Jurassic ophiolitic basalt-argillite matrix mélange and JuraCretaceous stratigraphic overlap sequence, northwestern Washington
10 Jun 2022 The Cascade Volcanoes: A Living Laboratory for Geologic Exploration!
2 Jun 2022 Great Basin Natural History
24 May 2022 Encountering the Unexpected in Pacific Northwest Geology
17 May 2022 Disaster Preparedness in Volcano and Earthquake Country
13 May 2022 GSOC Presentation: Using Lasers to Peer Behind Cascadia’s Green Veil
13 May 2022 Disaster Preparedness in Volcano and Earthquake Country
4 May 2022 COGS Geo-Exploration: Gray Butte
26 Apr 2022 When Magmas Meet High-Tech Metals: What Can the Mountain Pass Rare Earth Element Deposit Bring to the Future?
16 Apr 2022 Relationships Between Elakha (Sea Otter) and a Sense of Place on Oregon’s South Coast – A conference honoring the life and legacy of Chief Don Ivy
8 Apr 2022 GSOC Presentation: Micro-Mineral Landscapes
8 Apr 2022 Bretz Club Conference: From Magma to Mud: Uplifting, Transporting, and Degrading Stories from Cascadia
7 Apr 2022 COGS Geo-Exploration: Barnes Butte, Prineville, OR
22 Mar 2022 Newberry Volcano Geothermal Projects, Past and Future
15 Mar 2022 ONDA Speaker Series: Small Splendors - Vast Landscapes
11 Mar 2022 GSOC Friday Night Lecture: Hidden Caldera Beneath the Harney Basin, and Volcano-Tectonic History of the Hood River Graben
8 Mar 2022 NWGS Monthly Presentation: Uplifted Pleistocene Estuarine Deposits, Southwestern Washington
24 Feb 2022 Oregon Society of Soil Scientists - Winter Meeting: Life in the Anthropocene
24 Feb 2022 Do Droughts Affect Groundwater Quality? A California Story
22 Feb 2022 From maar craters to cinder cones: Understanding Oregon's small, but most common, volcanoes
11 Feb 2022 GSOC Friday Night Lecture: Major Reorganization of the Snake River Modulated by Passage of the Yellowstone Hotspot
8 Feb 2022 NWGS Monthly Lecture: Glaciovolcanic caves in the Cascades
26 Jan 2022 Cascadia Earthquake Anniversary - 322 years!
25 Jan 2022 Wildfire and Debris Flows
14 Jan 2022 GSOC Friday Night Lecture: Progress Update on Seismic Resilience in Oregon & PNW
11 Jan 2022 Quaternary Geologic History of the South Puget Sound and Nisqually Reach Area
14 Dec 2021 NWGS Monthly Presentation: Eyewitness to an Exploding Volcano - Mt St. Helens
3 Dec 2021 COGS Geo-Exploration: Farewell Bend Loop
1 Dec 2021 COGS Geo-Exploration: Flatiron Rock in the Oregon Badlands
23 Nov 2021 Tectonic evolution of the Cascadia margin in southwest Oregon during the past 55 million years
18 Nov 2021 The Top 10 Misconceptions about Yellowstone Volcanism
2 Nov 2021 Climate Resilience in Central Oregon by Hal Wershow
26 Oct 2021 Evaluation of slip history and Holocene activity on faults in the Strawberry Mountains
28 Sep 2021 Timing and controls on growth of the Oregon Basin and Range Province
6 Aug 2021 Ochoco Mining District Field Trip by Carrie Gordon & Derek Loeb
28 Jul 2021 Deschutes River Geohydrology Field Trip
27 Jun 2021 COGS Field Trip: Fault Scarps of Mt. Hood (south side)
25 May 2021 I Date Rocks: A Geochronology Love Story
27 Apr 2021 Water in the Deschutes Basin: 2020 Hindsight – What Happened?
23 Mar 2021 The fragmented death of the Farallon Plate
23 Feb 2021 Our Vanishing Glaciers, Part II
26 Jan 2021 The Next Great Cascadia Earthquake - How did we get here?
24 Nov 2020 What lies under recently active Cascades volcanoes?
27 Oct 2020 Mapping the Magmatic Pathways Beneath Volcanoes from Newberry, Oregon to Santorini, Greece
22 Sep 2020 Red Rocks from Earth to Mars
25 Jun 2020 Extinction: Using catastrophic events to construct the geologic timeline
26 May 2020 The history and science of glacier change in the western US and a peek into their future
28 Apr 2020 Volcanoes in Our Backyard: Understanding and Mitigating Volcano Hazards in Central Oregon
27 Mar 2020 Monthly Tours of the OSU-Cascades Pumice Mine
24 Mar 2020 I Date Rocks: A Geochronology Love Story
25 Feb 2020 Mountains, Earthquakes, and Landslides: Using Lasers to Peer Behind Cascadia's Green Veil
28 Jan 2020 Three Newly Discovered Fault Systems in Oregon
26 Nov 2019 Oregon's Checkered Past
22 Oct 2019 The Other Flood: Ice-age Bonneville Flood on the Snake River
4 Oct 2019 Deschutes River Field Trip
24 Sep 2019 Tectonic History of the Coos Bay Basin and its Relationship to Pacific Northwest ‘Siletzia’ Tectonics
14 Sep 2019 Mount Hood Field Trip
10 Aug 2019 Newberry Volcano: A sleeping giant with two bubbling lakes
22 Jul 2019 Newberry Volcano Field Trip
13 Jul 2019 Wildcat Mountain Caldera Field Trip
28 Jun 2019 Fire and Water: Recent mafic volcanism of the central Oregon Cascades
28 May 2019 Holocene Glacial and Paleoclimate Reconstructions in the North Cascades, Washington
16 May 2019 Geology of the Scout Camp loop trail along the middle Deschutes River
27 Apr 2019 Geology of Shevlin Park
23 Apr 2019 A new look at “old” tuffs from Newberry Volcano: Evidence for dynamic magmatic processes at a geologic crossroads in central Oregon
26 Mar 2019 Kīlauea's 2018 Fissure Eruption – Chronology, Processes, and Impacts of Kilauea's Largest Eruption in 200 Years
26 Feb 2019 Mountains, Earthquakes, and Landslides: Using Lasers to Peer Behind Cascadia's Green Veil
22 Jan 2019 The High Lava Plains of Oregon: Volcanic and Tectonic Connection between Yellowstone and the Cascades
27 Nov 2018 Groundwater hydrology and groundwater-dependent ecosystems of central Oregon
3 Nov 2018 Hydrovolcanoes of Central Oregon Field Trip
23 Oct 2018 The Crooked River Caldera
23 Oct 2018 Crooked River Caldera Field Trip
25 Sep 2018 Assembling the Northwest: A roadside view of Oregon and Washington geology
23 Sep 2018 Mount Bachelor Volcanic Chain Field Trip
14 Sep 2018 Clarno Fossil Beds Field Trip
5 Aug 2018 Glacial Geomorphology of the Santiam Pass Area Field Trip
16 Jul 2018 Oregon's volcanoes: What have we learned from global advances in volcanology over the past decade?
14 Jul 2018 Lava Butte and Lava Lands Visitor Center
22 May 2018 Oblique subduction, rotating crustal blocks, and the active tectonics of the Pacific Northwest
10 May 2018 Deschutes Formation, Whychus Creek Geologic Field Trip
24 Apr 2018 Mount Hood: Confessions of an interesting Boring volcano
1 Apr 2018 Geology of Riley Ranch Nature Reserve Field Trip
27 Mar 2018 Geothermal Exploration at Newberry Volcano

Central Oregon Geoscience Society

Email: COGeoSoc@gmail.com
P.O. Box 2154,  Bend, Oregon 97709

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