Master Naturalist Field Trip - Part 1

Last Saturday was the day-long field trip for our Master Naturalist class. It was very cold but everyone bundled up and headed out from the Benjamin Banneker Historical Park and Museum. We saw a replica of the type of cabin that would have been on the property when Banneker lived there and marveled that the property was purchased with 7,000 pounds of tobacco. Dried tobacco is very light so we assumed it must have still been green…but that is still a lot of tobacco.

One of the first stops was the Banneky House built in the mid-1800s - long after Benjamin Banneker’s time. Our focus was the rocks on its exterior! This wall showcases Ellicott City Granite with the small, very dark pieces being amphibole.

We started to walk down the pathway of the park to the Trolley Trail that would take us into Ellicott City. The trolley stopped in 1959 and the rail to trail occurred in the 1990s. The forest was not an old forest and there were some houses (some very new ones in the mix) built fairly close to the water. The weather has been too cold for wildflowers to be blooming but there were other things of interest. I always stop for shelf fungi and these with gray/white/rust rings were nestled into some green lichen….the color and texture was eye catching.

There was water trickling everywhere…and the most seemed very green against the backdrop of rocks and brown leaves left over from last season.

The bed of moss has fruiting bodies! Note that the height of the whole plant is only about 2-3 inches.

We saw frogs eggs - but the frogs were silent in the cold (and probably burrowed somewhere to keep warm).

There were swirls in some of the rocks beside the trail. Thinking about the metamorphosis of rock under pressure requires a conscious effort to understand a timescale that is beyond our normal comprehension.

We get down to Ellicott City in time for lunch. The decision to eat at a restaurant (and warm up) rather than picnic was welcomed by all.

I noticed the cairns in the little park across from the restaurant. At least two types of rocks were easy to spot!

The post that marks the water level above the normal river height during various floods is at the river end of Main Street in Ellicott City. The one in 1868 is at the very top of the bridge railing. That would have flooded two floors of the buildings! At that time the area would have been heavily farmed - most of the forests would have been fields so the water would have run off quickly from a storm. The 1972 mark is from Hurricane Agnes. Some forest had grown back but there was beginning to be a lot of housing development. More has been built since then. What would happen if a storm like Hurricane Agnes happened again today? A lot of impervious pavement has been added to the watershed. Are there enough forested buffers and rain gardens to slow down the flow of stormwater during a big storm?

After lunch, our group carpooled to the Avalon area of Patapsco Valley State Park. I’ll post about that part of the field trip later this week.