Ranger Kathryn's Arches

March 31, 2010

Lithic scatters, bones, biscuitroot, and aerie

knapped flakes found within a few feet of each other

Here’s your new vocabulary for the day; see if you can use it in conversation.

LITHIC SCATTER: a surface scatter of cultural artifacts and debris that consists entirely of lithic (i.e., stone) tools and chipped stone debris. This is a common prehistoric site type that is contrasted to a cultural material scatter, which contains other or additional artifact types such as pottery or bone artifacts.

As Tricia and I hiked out to locate a Great Horned Owl’s nest near Delicate Arch, we had to veer from established paths. I’d say four of our six miles were off trail, and what a treasure hunt THAT was. Staying off the biological soil crust (formerly ‘cryptobiotic soil’) was tricky, but it took us along the slickrock edges and down sandy washes. I felt as if I were on a scavenger hunt; Tricia’s experienced eyes found all manner of remarkable items.

1. The sharp thin razor-edged flakes from knapped chert were lying ALL OVER in certain places. I picked them up and marveled at the people who made them, and then returned them to their spots despite wanting to keep a couple for souvenirs.

Part of the food web

2. The area below the owl alcove that we found (with about 5 gallons of whitewash blanketing the rocks) was strewn with regurgitated owl pellets and bones of small rodents and young rabbits. I hooted, “Who’s awake? Me, too…” to no avail. We’ll have to go back early in the morning to hoot again.

Canyonlands biscuitroot

 

3. The Canyonlands biscuitroot is blooming!!! This species of concern grows ONLY at the base of fins of Entrada sandstone. Such a narrow niche allows it to be found in only two counties in the world. It is a precious and protected plant.

We concluded our day scoping out what a recent visitor directed us to: a possible Peregrine Falcon aerie at the north end of the park. This will be closely monitored for nesting activity in the coming weeks.

Two threatened species in a day. Happy.

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