Discussing the subsurface flow in a sand and gravel Kame at Browns Lake Bog.
Class meets in Scovel 116 MWF, Lab will meet in various classrooms and labs.
Initially we will be visiting local field sites in lab (this coming Monday).
Many thanks to The City of Wooster for allowing us access to the South Wellfield. The map of water levels and contouring exercise is due Monday. On Monday (20 April) we will be traveling to Rittman to describe a glacial sedimentary sequence.
The group at Fern Valley. Gaging Wilkin Run and measuring water levels in wells.
Leo examining the Ice Contact stratified drift of the terminal moraine that in part lies across Fern Valley. This deposit records the Laurentide’s ice sheet advance into the proglacial Odell Lake (note the gray lacustrine clays and silts to Leo’s left). The exposure is capped with loess – the parent material of the soils here.
The Well installed in the middle of the Run indicates whether the stream is gaining or losing.
Describing the stratigraphy along the Little Killbuck Valley – this is a delta – topsets (note the channel fills at the top) and foresets (muddy foresets because the local bedrock is weathered shale and there was some rain falling) – the bottomsets are shown below.
The bottomset beds – gray silts to the right. The modern mudflow fan Jim inavigates on his way to the colluvium that lies above the bedrock contact.
Monday we will be working in the Wooster Wellfield. This is a buried valley once again and we will be constructing a potentiometric map from water levels. This is a confined aquifer and is remarkable as it yields over 5 million gallons of water each day. However, there are several challenges that the community faces in terms of water quality.
Senior IS day only the dedicated staff members made the trip to Browns Lake to record water levels and install a well.
Now that the snow pack measured and described at Wooster Memorial Park is gone downstream we can get busy and examine the groundwater – streamflow interaction. The hydrograph below that was record at Browns Lake by us (see below) and in the Killbuck River by the USGS shows a characteristic shape indicating the melting of the snowpack.
Dr. Lowell and a crew from the University of Cincinnati spent thee days with us on the ice at Browns Lake Bog. The objectives were to take a series of long cores from the ice platform at the bog and, in the big lake, to take a short surface core that the Wooster Geomorphology class will study. In addition we installed a series of four nested monitoring wells in the sediments around the lake.The coring crew taking the deep core – about 24 meters in two meters of water depth.
The sediment-water interface on TV – note the screen on the ice that helped guide the coring process to be sure the actual sediment-water interface was captured.
Subsampling the upper core to be sure the modern sediments at the interface were in the bag.
The ongoing coring.
Measuring dissolved oxygen, pH, TDS, ORP and Temperature along a depth profile.
Drilling a series of holes to act as a screen in the monitoring wells.
Pumping the wells for isotope samples and installing a transducer to keep track of water levels.
Welcome to the Geomorphology (Geology 300) class web page for Spring 2015. Please check this Syllabus weekly for announcements, readings, assignments and links specific to weekly topics covered in class, labs and fieldtrips. The Preparation Questions page will lead you to thought questions, readings and short exercises that should be completed before each class. See About the Course for evaluation, logistics and expectations.
Although cold and snow has been a bit disruptive in our lives (at least in NE – Ohio) this past month what would it be like with out snow – read this.
Our first lab will be concerned with the data and impact of the December 2013 flood. See images below courtesy of Nick Wiesenberg.
Some images below from the course in the Fall of 2012
Just to the west on the trip is Browns Lake Bog – a kettle in the midst of the Lake District of Ohio
Coring at Bonnett Pond
The coring crew