Glacier National Park, Montana - September 2023

Spent two days hiking around Glacier National Park this past weekend and was completely blown away by all its geology, glacial history, and plant diversity. To my understanding, the the geology of Glacier has three main parts to its history. Many of the rocks you see in the park today are sedimentary, argillite, limestone, clay-stone, and some igneous rocks that are roughly 1 billion years old. Those older rocks were uplifted over younger rocks (70 m y/o) during the Lewis over-lift. During the last ice age (2 million - 12,000 y/o) massive glaciers ripped through the park exposing its geological history. Relatively, the landscape we know today is actually pretty young. It’s hard to grasp that the park was buried under thousands of feet of ice that slowly carved out the mountains. Some glacial lakes, like Whitefish, Avalanche, and Flathead lake, are excellent examples of the scale and impact of these glaciers. Today, the park’s iconic glaciers are just remnants of what they once were (even in the past 50 years). I added a few pictures of some of the glacially carved valleys, lakes, and mountains, that really help me put things into perspective. Many of the plant and tree species I saw reminded me of what I see in the Cascades. My favorite part was seeing all of the conifer diversity, Ponderosa Pines, Douglas Fir, Mountain Hemlock, Subalpine Fir, Pacific Yew, White-bark Pine, Engelmen’s Spruce, Noble Fir, and so many more. It was a really conifer wonderland! Not many wildflowers in bloom this late in the season, but I tried to capture as much as I could!

The last two days of our trip, we took a fly fishing trip down the Clark Fork river. Ponderosa pines and Western Red Cedars lined the sides of the river. Barely any tall shrubs or really any broadleaf trees besides the Rocky Mountain maple.  We caught and released a few native Rocky Mountain whitefish and cutthroat trout. It’s been fun learning more about fish and just being out on the river in general.

St. Mary Lake

Grindelia squarrosa

Symphyotrichum falcatum

Glacial valley at Logan Pass

Phacelia hastata

Argillite shale

Eurybia conspicua

Eurybia conspicua

Ceonothus velutinus

Acer glabrum

Campanula rotundifolia

Melenoplus bivittatus - two striped grasshopper!

Dasiphora fruticosa

Antennaria aromatica

Gaillardia artista

Glacial sediments in the river

Spinulum annotinum - interrupted club moss

Oplopanax horridus

Lophocampa maculata - Spotted Tussock Moth

Sedum sp. thinking either stenopelatum or lanceolatum

Taxus brevifolia

Thuja plicata

Gymnocarpium dryopteris

Galium boreale

Castilleja miniata

Helenium autumnale

Helenium autumnale

Oncorhynchus clarkii - cutthroat trout

Prosopium williamsoni - Mountain whitefish

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Flathead Reservation, Montana - September 2023 

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Siletz Bay National Wildlife Refuge - September 2023