2015 Pacific Cell FOP 2nd Announcement   Leave a comment

From Dr. Joanna Redwine:

Hi FOPpers,

There have been some folks clamoring for more details of the upcoming 2015 Annual Pacific Cell Friends of the Pleistocene field trip in Mohawk Valley and the North Fork of the Feather River in northeastern California –

Friday through Sunday, September 25-27.

So, here is some more information for you.

1. We need a rough headcount to make the final decision regarding which campground we stay in – so if you know you are coming, please sign up sooner than later. This year we have two rates – a student and a non-student rate, so look for that when you sign up.

Please sign up using paypal on the 2015 Pacific Cell Field Trip Web Site:


2. If you want off the FOP listserv or know someone who wants to be added to the FOP list, there is a link to change as needed here:


3. Briefly, what we know about the trip so far:

Trip Contributors will be:

Joanna Redwine Bureau of Reclamation
John Wakabayashi California State University, Fresno
Tom Sawyer Piedmont Geosciences
Chris Kemp Lettis Consultants International, Inc.
Ken Adams Desert Research Institute
Ryan Gold USGS
Rich Briggs USGS
Jayne Bormann Nevada Seismological Laboratory, UNR
Julie Broughton Stantec Consulting Services Inc

Tentative Schedule (Not set in stone and very likely may change)

Day One – Tectonic setting of Mohawk Valley, geodetic models and recent mapping of the Mohawk Valley fault zone (MVFZ), glacial history of the Lakes Basin, soil development into glacial deposits, geomorphic evidence for a large Mohawk Lake, stratigraphy of thick packages of fluvial (fluvial deltaic?) deposits and the tephra beds within them, and evidence for large base level changes apparent in Mohawk Valley and possible relative contributions of faulting/basin subsidence and a fluctuating Mohawk Lake.

Day Two – Discuss late Cenozoic uplift and evidence for northward propagation of the Frontal Fault System, evidence for temporal variations in uplift-related incision rates over the past ~3 Ma, results from recent mapping and paleoseismic study of the MVFZ, stratigraphy of the Mohawk lake beds, and paleoelevation of the Sierra Nevada derived from analysis of Eocene flora.

Day Three – More glacial deposits and soils developed into moraines in the Lakes Basin, glacial outwash (fluvial-deltaic?) deposits and the tephra beds within them, and tephrostratigraphic correlations from 26 tephras deposited over 740 ka in the Mohawk lake beds.

4. Logistics –

• As per usual, most of us will meet up Thursday night so we are ready to start the trip Friday morning. The trip will be all day Friday, Saturday, and a half day Sunday.
• For those who want more camping details – We will either be in the Eureka-Plumas State Park or in one of two Forest Service campgrounds along Gold Lake Highway (Gold Lake or Lakes Basin campgrounds). When the final decision is made, I will send an email out. The Gold Lake campgrounds have pit toilets, tables, and fire pits – no water.
• There is also lodging in Graeagle and other nearby areas. Some of those locations are listed below.

Basic hotel in Graeagle is:


Nicer lodges that are close:


Nicer lodges that are close enough:


Portola is only about 30 minutes away from where we will be camping and there are some more hotels there.
• A field trip ride share page has been set up here:

• This is not a middle of nowhere FOP. There will be gas stations, water, little grocery stores along the way for forgotten items and such. If we are not in the state park, you will need to bring your own water.

• 2wd vehicles will be fine for this trip. There will be one or two stops where we will consolidate to minimize cars and leave the low clearance cars behind for a short time.

I will send a short email when the guidebook is available and/or when the camp location is nailed down.


Joanna Redwine
Seismology, Geomorphology, and Geophysics Group
Bureau of Reclamation
(303) 445-3188

from me (jay p): here is a pdf of this second announcement.

From the first announcement:

Posted 2015/07/24 by FOPadmin in 2015, pacific cell

2015 Pacific Northwest Cell Friends of the Pleistocene Field Conference   Leave a comment

I (jay p) will be creating a 2015 PNW Cell FOP Field Trip web site here: http://www.fop.cascadiageo.org/?page_id=205

From Glenn D. Thackray:

We are pleased to announce the 2015 PNW FOP field trip, scheduled for Sept 18-20 on the lovely western and northern Olympic Peninsula, Washington. Details are appended to this email and further details will be available in mid-August.

If you are interested in joining the trip, please complete the brief survey at
https://oregon.qualtrics.com/SE/?SID=SV_7PzVICH4gfFP0lD so that we can get a sense of likely numbers of participants. If you have questions, please email us at pnwfop2015@gmail.com, and we’ll get back to you as soon as we can, though travel schedules may prevent an immediate response.

Glenn Thackray and fellow trip leaders

2015 Pacific Northwest Friends of the Pleistocene Field Conference

Late Pleistocene to Modern Geomorphic and Biotic History
of the Olympic Peninsula, Washington.

September 18-20, 2015

Glenn Thackray, Idaho State University
Dan Gavin, University of Oregon
Karl Wegmann, North Carolina State University
Lisa Ely, Central Washington University
Andy Ritchie, US Geological Survey and Olympic National Park
Allan Ashworth, North Dakota State University
Jamie Shulmeister, University of Queensland

Please join us for a Friends of the Pleistocene extravaganza in the stunning and active landscape of the Olympic Peninsula, northwestern Washington. We will explore evidence of glaciation, paleoecological transitions, lacustrine changes, geomorphic responses to subduction zone earthquakes, and the response of the Elwha River to recent dam removal… and likely much more.

Following FOP tradition, we will keep up-front costs low by leaving participants responsible for transportation and food, basing the group at inexpensive campgrounds, and publishing the guidebook online. There will be a nominal charge for campground fees and other incidentals.

The nights of Thursday and Friday (9/17 and 9/18) will be based near Kalaloch on the western Olympic Peninsula. We will designate a rustic and inexpensive campground for the group to meet (details to follow in August). If you desire a more developed campground, nearby campgrounds include Kalaloch campground (NPS, reservations online), US Forest Service campgrounds at Quinault Lake, and Bogachiel State Park (ca. 35 minutes north, reservations online, full service with showers). The Washington DNR also operates several free, rustic campgrounds in the area.
On Saturday night, we will camp on the northern Olympic Peninsula near Port Angeles (details to follow)

For Thursday and Friday nights, indoor lodging can be found at Kalaloch Lodge, at several Quinault Lake/Amanda Park establishments, and in the town of Forks (ca. 45 minutes north). For Saturday night, lodging is available in Port Angeles and nearby communities.

Provisional itinerary:
Thursday evening, 9/17
Those arriving on Thursday will gather at a campground (to be determined) on the west side of the Olympic Peninsula near Kalaloch.

Friday, 9/18
Examine glacial, earthquake, and paleoecological records in the Quinault and Queets valleys. Camp again near Kalaloch.

Saturday, 9/19
Beetle, pollen, and glacial records of climate variability in the Hoh valley.

Camp near Port Angeles on northern Olympic Peninsula.
Evening celebration and planning for next FOP gathering.

Sunday, 9/20
Examine tectonic and landslide-influenced lacustrine records from Crescent Lake and post-dam Elwha River evolution. Discuss treeline fluctuation studies of Hurricane Ridge.
Trip will end mid-afternoon.

Further details will be available in mid-August.

If you are interested, please complete the survey at
https://oregon.qualtrics.com/SE/?SID=SV_7PzVICH4gfFP0lD so that we can get a sense of likely numbers of participants. If you have questions, please email us at pnwfop2015@gmail.com. Most of us are on summer travel and field work schedules, but we’ll get back to you as soon as we can.

Glenn D. Thackray, Professor
Department of Geosciences
Idaho State University
921 South 8th Ave, Box 8072
Pocatello, Idaho 83209 USA

Posted 2015/07/24 by FOPadmin in 2015, pacific northwest cell

2015 Pacific Cell FOP 1st Announcement   Leave a comment

From Dr. Joanna Redwine:

Hey Foppers-
The 1st Announcement of the 2015 Annual Pacific Cell Friends of the Pleistocene Field Trip to Mohawk Valley – Feather River – Northern Sierras (Fri – Sun Sept. 25-27, 2015) is linked below.

1st Announcement (pdf)

Join the Email List for the Pacific Cell here

Posted 2015/05/11 by FOPadmin in 2015, pacific cell

2014 Pacific Cell Guidebook Posted   Leave a comment

The 2014 Pacific Cell FOP Guidebook has been posted to the 2014 Field Trip Page here.

Here is more:

Ride Share Page here
Join the Email List for the Pacific Cell here
September 2014 FOP Songbook here (thanks Marith!)

Posted 2014/11/04 by FOPadmin in 2014, pacific cell

2014 Pacific Cell Friends of the Pleistocene Field Trip: Second Announcement   Leave a comment

The second announcement for the 2014 Pacific Cell Friends of the Pleistocene Field Trip has been posted here.

Please read the announcement, fill out and submit the registration form, and remit payment. Information about all of this is on the

2014 Field Trip web page.

Please contact John Caskey (email on second announcement) if you have any questions.

Join the Email List for the Pacific Cell here

Posted 2014/09/16 by FOPadmin in 2014, pacific cell

2014 Pacific Cell FOP 1st Announcement   7 comments

Late Breaking News from Marith Reheis:

Fellow FOPers, mark your calendars for the 2014 Annual Pacific Cell Friends of the Pleistocene field trip, which will be in Tecopa basin in southeastern California, Friday through Sunday, November 7-9, 2014.

John Caskey, Marith Reheis, Gary Scott, Dan Larsen, Matt McMackin, others?

Here is the announcement: Pacific FOP 1st announcement

Posted 2014/05/06 by FOPadmin in 2014, pacific cell

2014 Pacific Cell FOP   Leave a comment

The masses have spoken and the masses voiced loud support for the Tecopa Basin proposal put forth by Marith Reheis on the behalf of John Caskey and others.

We all look forward to an epic trip this November. Look forward to an official announcement.

Here is the original proposal as composed by Reheis (also here: http://www.fop.cascadiageo.org/?p=79#comments)

From Marith:

OK folks, the moment you’ve all been waiting for! or rather, holding your breath so that you won’t feel guilty…

Tecopa Basin Stratigraphy, Chronology, and Structure: A Work in Progress

Leaders: John Caskey, Marith Reheis, Dan Larsen, Gary Scott, Jack Hillhouse, others?

The Tecopa basin and its well-exposed basin-fill sediments have been studied for decades and is a favorite target of Western geology field trips. Sheppard and Gude first examined the chemical alteration of the sediments and recognized three tuffs, A, B, and C, by which to correlate around the basin. Hillhouse and Sarna-Wojcicki (and Izett) correlated these tuffs to the Lava Creek, Bishop, and Huckleberry Ridge tephra layers using glass chemistry and paleomagnetic data. Roger Morrison reconstructed a lacustrine history for the basin, and claimed that the last major highstand reached ~540 m early in OIS 6. Finally, Dan Larsen recently refined the lacustrine history using detailed sedimentology and degree of diagenetic alteration.

For the last 5 years or so, some of us have been looking at other evidence for lake history by analyzing sediments for ostracodes as an indicator of depositional and chemical environment and by looking for preserved beach deposits and (or) strandlines around the basin as an indicator of true lake level. From ostracode analysis, the only sedimentary intervals that contain lacustrine ostracodes as opposed to those that can live in waters derived from groundwater discharge include (1) just below the Huckleberry Ridge ash on the east side of the basin, (2) a several-meter interval just below the Lava Creek ash (with a highstand during or just after LC deposition); and (3) a unit 10-15 m stratigraphically above the Lava Creek. This youngest unit is of uncertain age and possibly could represent similar highstand elevations at different times (we’re working on dating). All three of these intervals are also represented by beach sands and gravels.

For additional FOP stimulus, some of us also think that (1) the shoreline elevations as defined by beach sediments have been warped and (or) faulted; (2) the published stratigraphy of lake units below the Bishop ash as correlated from east to west may be incorrect because the tephra identified as “tuff C” on the western side of the basin is not the Huckleberry Ridge and is probably much younger; (3) the OIS-6 highstand, if there was one, did not exceed 510 m; (4) observations indicating that two (?)lakes, both younger than that associated with the LCB, reached a similar 510 m-high stand elevation, suggesting that lake levels were controlled by a bedrock sill on the “Tecopa hump.”

Recent studies by the proposed trip leaders and others that will also be the focus of discussion on the trip include the timing of Amargosa River integration with the Tecopa and Death Valley basins, and new observations tying the OIS 6 lake-level (shoreline) history of pluvial Lake Manly to the well-dated and studied Badwater core.

All of this is in progress and much of it conflicts with previous work. So the goal of this FOP is to host open discussion of all interpretations, to invite comment, suggestions, and criticism, and hopefully to enable collaborations that will lead to better understanding of this long-lived sedimentary basin. The guidebook will be MINIMAL!

We propose to do this trip in early November 2014, around Veteran’s Day weekend, because delaying till next March won’t see us any more prepared and because March is more commonly typified by howling winds than November.

Posted 2014/03/25 by FOPadmin in Uncategorized

2013 most deserving award   Leave a comment

These are some photos of the dog Yuki, who is very excited to take care of the most deserving award. We need to select the next trip leader so Tom can personally safely deliver the most deserving award to them.

Here is Tom Rockwell’s dog Yuki.

Here is Tom Rockwell’s dog Yuki, along with the jawbone from the most deserving award.

Posted 2014/03/24 by FOPadmin in 2013, pacific cell

2014 Pacific Cell Trip? anyone?   6 comments


We are still ardently awaiting someone to announce that they are interested in leading the 2014 trip for Pacific Cell Friends of the Pleistocene.

Please comment below to begin a conversation about this. Alternatively, use the email list serv to do this also. Between these two forms of communication, perhaps we will not skip a year. That could be horrible, though we have done it in the past.

Here is the email list serv
To post a comment to the entire list (over 500 people), email to this email address: fop_list @ lists.fop.cascadiageo.org

regards, jay

Posted 2014/03/23 by FOPadmin in pacific cell

Friends of the Pleistocene   1 comment

This web site is set up to informally host some resources that are related to the Friends of the Pleistocene field conferences. There are web pages that include field trip information (when possible) as well as the guidebooks in pdf format. We are missing many guidebooks and are interested in obtaining electronic copies (or hard copies we could scan).

We have set up an email list for the Pacific Cell (and will do so for the PNW cell as soon as we get a hold of the email list). Please join the list here: Pacific Cell FOP List

Also, there is an FOP facebook page.

Feel free to share these resources with others. Also, please look at our list of field trips to see if you have any resources to contribute.

This web site is administered by Cascadia GeoSciences (CG). The webhosting is from dreamhost and, because of CG’s 501(c)3 status, does not charge us to host these resources. If anyone wants to help with administering this wordpress site, please contact us.

Here is the web page to begin with. There are links for each cell: Pacific, Alaska, Rocky Mountain, and Pacific Northwest.

Posted 2012/05/25 by FOPadmin in Uncategorized

Tagged with