This page lists field trips in various geographical categories, so you can find trips that are near each other. The list is updated whenever a new trip is added to the website.
A primer on the UTM geographic coordinate system used on this website is here.
Lower Mainland of British Columbia:
- Aldergrove: the Aldergrove erratic
- Coquitlam: the Shasta Court erratic
- The humongous September 2010 Capricorn debris flow here and here.
Vancouver Island
- Harling Point (Oak Bay) erratics and migmatite bedrock
- Westsong Way and glacial grooves at Songhees Point, Victoria.
- Dallas Road waterfront trail, Victoria- rocks on the margin of accreted terranes.
Bellingham, Chuckanut, and Whatcom/Skagit County Lowlands and foothills:
- Rock Trail, Larrabee State Park. Sandstone walls, strata, tafoni, rock fall boulders.
- Fragrance Lake Trail, Larrabee State Park; quartzite clasts in Vashon till.
- Erratics in or near Bellingham- Donovan, Arroyo…
- The H St Road erratic, Blaine.
- Point Whitehorn
- Ferndale erratics
- Squires Lake and Alger Alp geology hiking guide
- Raptor Ridge Chuckanut Mountains
- Clayton Beach tuff (volcanic ash) stroll in Larrabee State Park
- Honeycomb weathering (Larrabee State Park, Chuckanut Drive)
- Oyster Dome and Bat Caves hike via Pacific Northwest Trail (Blanchard Mountain)
- Chuckanut syncline (downtown Bellingham)
- Mount Baker Theater Rock (Chuckanut, downtown Bellingham)
- Teddy Bear Cove (Chuckanut conglomerate, Chuckanut Bay)
- Silver Creek hike (near Lake Samish)
- Saar Creek erratic (Sumas area)
- Chuckanut Drive landslides
- The Swift Creek landslide (Sumas Mountain)
- Stilpnomelane and chert on Blanchard Mountain (northwest Skagit County)
- Pholiated phyllite in South Fork Nooksack
- Samish Hills striated sandstone slab (Bellingham)
- Bald Mountain/Big Rock greenstone east of Mount Vernon
- West Beach, Lummi Island
- Gold Mine Trail, Sumas Mountain
- Burlington Hill, (Burlington). Helena-Haystack greenschist and phyllite
San Juan Islands
- Pillow lava on San Juan, Lopez, and Cypress Islands
- Iceberg Point rocky shore hike, southwest tip of Lopez Island.
- Serpentinite mantle rock at Washington Park, Anacortes.
- Mount Erie and the ocean crust near Anacortes
Mount Baker Highway, Nooksack River
- Racehorse Creek Landslide hike (near Kendall) and fossil fields
- Wells Creek volcanics (near Nooksack Falls)
- Church Mountain Landslide (Glacier)
- Pinus Lake andesite lava hike/bike (near Nooksack Falls)
- Chilliwack erratics hike (Table Mountain)
- Cougar Divide hike (above Nooksack Falls)
Middle Fork Nooksack River
- Roadside pillow lava of the Elbow Lake Formation (west of Clearwater Creek)
Skagit River Valley & Highway 20
- Mazama ash in landslide dammed Lake Ksnea
- The pollywog agmatite, Highway 20
- Limestone quarry above Concrete, Skagit County
Baker River valley
Whidbey Island
- Big Rock erratic, Coupeville
- Blowers Bluff beach walk on Penn Cove
- Double Bluff and Useless Bay beach walk in Langley area
- Waterman Erratic, (hike near Langley)
Olympic Peninsula
- Marrowstone Island: Vashon drift, a dike, coastal erosion, and concretions at Nodule and Lip Lip Points
- Oddball adakite lava at Tamanowas Rock, Chimacum
- White Rock erratic, Hood Head
- Beach 4, north of Kalaloch: unconformities and turbidites
- Pillow lava along the Heart O’ The Hills Road, Olympic National Park.
Seattle-Everett area
- Beach erratics at Discovery Park (Seattle)
- Wedgwood Erratic (Seattle)
- Leschi Park erratic (Seattle)
- Duvall’s ‘Big Rock’ (Duvall)
- Ravenna Park granodiorite erratic (Seattle)
- Edmonds Way breccia erratic (Edmonds)
- Fantastic Erratic Cougar Mountain Regional Park (Issaquah)
- Martha Lake erratic (Lynnwood area)
- Lake Stevens erratic (LARGEST IN THE US?)
- True granite erratic (Lake Stevens)
- Des Moines Beach Park erratic (Des Moines
- Thin en echelon dikes in the Highline Community College erratic (Des Moines)
Southwest Washington
- Fantastic pillow lava at Cape Disappointment State Park
- Where to collect nice black augite crystals in Lewis County)
I am teaching Earth Science in Peru. Before Peru was China and before China was Egypt. I teach in 3rd world countries because I believe everyone deserves a quality education and that education is the only thing that will ensure peace.
I want to take a field course this summer/Winter for you guys in NA. Can you suggest any that will include the geology of Oregon?
Cheers,
Anne
Ann,
Can any readers help Ann with her question about geology field programs in Oregon? I’m only aware of University-level field classes.
Ann, I commend your perspective- science ed encourages critical thinking which is a real plus for eventual peaceful relationships between people and governments.
Dave
PS: I’ver got another question.
About 20 years ago when I lived in Oregon, I traveled by train to Seattle. The train passed a area of ground with lots of odd little mounds. What were those mounds and what process formed them?
They are not praire dog mounds, nor are they termite mounds, of that I’m sure!
Cheers,
Anne
Ann,
These must be the famous Mima Mounds. Their origin is still a geo-puzzle. You can find out a lot on the internet; as alway, take that info with a large shovel full of salt.
I am writing a book about Western Washington geology site [Geology Underfoot in Western Washington] and it will include a chapter on these mounds. I don’t solve the problem, but wil speculate on the various ideas, which seem reasonable, which [such as giant gophers or Indian burial mounds] are baloney.
Regards,
Dave
tuckerd at geol dot wwu dot edu
Im interested in geology of clark and skamania counties, can any body help me with past field trips or written material?
Lowell,
Your best bet would be to find volumes of the Geological Society of America’s
variious field trip guides, which conceivably have trip sin the areas of
interest when there is a meeting in Seattle-Portland area. The 2009 volume has
several trips to see Columbia River basalt along the stretch of the river
between Cascade Locks and Astoria, I was on one of those trips. A local
library might have the guide. They are not available on line, since GSA sells
these guidebooks. Check their website.
If you do a web search for Bonneville Landslide or Beacon Rock, I’m pretty
sure you’d come up with some online guides, I did that once. Try similar
searches: geology of Columbia River Gorge for instance. Check out the page on
my website, “Geology Guidebooks”, I list a few that might be of interest. One
of those books, “Hiking Washington’s Geology”, I know has trips in your area.
The book I’m writing will have guided trips to Bonneville Landslide, Beacon
Rock, Cape Disappointment, Ape Cave, and the Mima Mounds, all in your area.
Dave Tucker
Adjunct, Department of Geology
Western Washington University
Board Member, Mount Baker Volcano Research Center:
http://www.mbvrc.wwu.edu
Mount Baker Volcano Research Center subscription site:
http://www.mbvrc.wordpress.com
My website is Northwest Geology Field Trips:
http://www.nwgeology.wordpress.com
Ann
Check out Portland State University. pdx.edu Dr Scott Burns
University of Oregon: Dr William Orr
Rocky
So happy to have found this site – I’m more of a plants & birds person, but am often curious about the rocks I see. Now I have a great source – bookmarked!
where would be a good place to see the “black mat layer” in washington.
this is the black sediment from and event related (possibly) to the onsought of the Younger dryas
Jesse,
First I have heard of this. Quick research comes up with this website: http://www.pnas.org/content/105/18/6520.full Figure 1 shows known locations of the transition from Pleistocene to Holocene; note that a ‘black mat’ [i.e. soil horizon] is not present at the one site known in Washington. There are Sumas tills in western Whatcom County, but I haven’t heard about any distinct soil layers at their base.
Dave
Is there anything like this for the columbia river gorge?
Diane, Not that I know of on the web. There are two gorge field trips in my book,
Geology Underfoot in Western Washington
: Beacon Rock, and the Bonneville Landslide/’Bridge of the gods’ story. Dave Tucker