Geomorphology – Fall 2018

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Discussing the subsurface flow in a sand and gravel Kame at Browns Lake Bog.

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Welcome to Geomorphology and Environmental Hydrogeology

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).


Below are some scenes of last year’s class.
Untitled 2Surveying the monitoring well elevations.

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.

meausureMeasuring the static water levels.

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Fieldwork at Fern Valley and along the Little Killbuck

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The group at Fern Valley. Gaging Wilkin Run and measuring water levels in wells.

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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.

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The Well installed in the middle of the Run indicates whether the stream is gaining or losing.

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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.

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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.

gagingThe Archaeology team measures the velocity profile at Fern Valley.

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.

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More Field Work – Fern Valley Next

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Senior IS day only the dedicated staff members made the trip to Browns Lake to record water levels and install a well.

 

snow_day

 

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.

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Obtained a New Core and Some Infrastructure

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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.coring_theoryThe coring crew taking the deep core – about 24 meters in two meters of water depth.

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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.

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Subsampling the upper core to be sure the modern sediments at the interface were in the bag.

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The ongoing coring.

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Measuring dissolved oxygen, pH, TDS, ORP and Temperature along a depth profile.

 

instrument_wellMeasuring the same parameters in four sets of nested monitoring wells  – one deep, one shallow.

on_iceDrilling holes in the ice along  grid and measuring depth profiles in the big lake.

ice_holesOne of the ice hole teams.

probingThe mud probing team – not a glamorous job but necessary.

water_levelMeasuring the water levels in the well after bailing.

weather_stationThe weather station installed at the bog. 

well_prepDrilling a series of holes to act as a screen in the monitoring wells.

pumpingPumping the wells for isotope samples and installing a transducer to keep track of water levels.

shootingErika takes aim at the upper branches of a white oak – she will extract the water from these twigs and buds and measure their isotopic composition.

shavingPealing the twigs and bagging them up for transport.

our_coreTom recovering the surface core from the middle of Browns Lake – the big lake. Now the ball is in our court to do some analysis. Great thanks go out to the Core Boss and his crew.

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Geomorphology and Environmental Hydrogeology at Wooster

DSC_0462Welcome 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.

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Our first lab will be concerned with the data and impact of the December 2013 flood. See images below courtesy of Nick Wiesenberg.

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Some images below from the course in the Fall of 2012

Trip to Holmesville Sand and Gravel where we toured the operation and the guts of a Kame Moraine.

Just to the west on the trip is Browns Lake Bog – a kettle in the midst of the Lake District of Ohio

More Coring – this time along the shore of Browns Lake and guess what the upper few meters yielded.

 Tell me about the recent (Anthropocene) history from Ohio with this core….

Coring at Bonnett Pond

The coring crew

 

 


 

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