Mississippi River Geology!!!?
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Oh! Don't forget the New Madrid earthquake that made her run backwards.  (it really happened)\n\nhttp://en.wikipedia.org/wiki/New_Madrid_earthquake
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Here's one:\n\nhttp://www.dnr.sc.gov/water/envaff/river/gr_pee_deemap.htm
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The Niagara and Genesee Rivers in Upstate New York flow north. The Licking River in Kentucky flows north. There are probably many more.\n\nIn 1869, an earthquake hit Memphis, TN, causing the Mississippi to flow backwards (south to north) for 90 seconds!
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Imagine you have a drainage network of rivers, tributaries, and streams.  Now imagine one particular path of drainage, from head waters to delta.  If somehow (erosion, for example) somewhere along this path the water found a new shortcut to another part of the drainge system, then that water would have been "autocaptured".\n\nGet out a map of Illinois and the surrounding area.  The Illinos Waterway goes from Lake Michigan at Chicago to the Mississippi river at St. Louis.  The Mississipi river flows along the western border of Illinois.  Now look at the area between LaSalle, Ill. (on the Waterway) and Davenport, Iowa (by the Mississippi).  There is a set of streams in this area.  If they managed to link together and cause the Mississippi to be diverted near Davenport to LaSalle, then the Illinois Waterway would have captured the Mississippi.  Since these are part of the same drainage system, it would be called an autocapture.\n\nThe link below may explain better with illustrations. Look at pages 9 and 10:
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do you know the river Colorado? that was the river that washed away all the rock there and literally dug a deep canyon after eroding for millions and millions of years . even know if you travel till the bottom of the canyon you will see the tiny river Colorado rushing through . but i am not to sure if you are allowed to go . when i went there we were not . have fun there . its magnificent !
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Mass Wasting\n\nhttp://gpc.edu/~pgore/geology/geo101/masswasting.html\nhttp://seis.natsci.csulb.edu/bperry/Mass%20Wasting/Introduction_to_Mass_Wasting.htm\nhttp://www.tulane.edu/~sanelson/geol204/masswastproc.htm\n\nWeathering Vs. Erosion\n\nhttp://www2.nature.nps.gov/GEOLOGY/usgsnps/misc/gweaero.html\n\nWeathering\n\nhttp://gpc.edu/~pgore/geology/geo101/weather.htm\nhttp://jersey.uoregon.edu/~mstrick/RogueComCollege/RCC_Lectures/Weathering.html\nhttp://www.physicalgeography.net/fundamentals/10r.html\n\n\nErosion\n\nhttp://geography.about.com/od/physicalgeography/a/erosion.htm\nhttp://en.wikipedia.org/wiki/Erosion
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you can spend years here....zorathustrn granite,mica schists..various volcanics  in  canyons bottem  are  evidence trhat  an old mountain range...some say  as  high as  todays  rockies...[by base measurments]  was  eroded away  by  ice flows.....oceans came  and  left.....on  ariving  plant and  animal life  contribute  fossil remains and  calcite[the  making of limestone]mud stones and shales....the  various  banding  give us  ideas to the duration  andlife  of the times.....basically  the  areas  above the  river  are  sandstones  shales  and  mudstone....but there is  marble and dolomites....explore....thers  gotta  b   pics  on  net  somewhere
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go to google and type in bhara river basin and it will give you a choice of sites on that subject.hope this helps!
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I have to admit im not too clued up on the geology of Maryland, however over here in the UK we have in the Mendip Hills something which resembles Obsidian but in fact its not. On a university field trip we went to an old smelt, where the guys used to smelt Limestone and the result was this black shiny stuff that looked identical to Obsidian. The stuff was strewn all over the place in big heaps. Confused the 'ell out of us students initially until we were told the what it actually was. I wish I could remember more about it but then again uni was a bit of a blur!
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Try this site, it has some links of the park and surrounding areas: http://borntoexplore.org/river/attractions.htm
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I don't know what your teacher has told you, but erosion was a major factor in the formation of the Grand Canyon.  Water flowing through the area over millions of years did an amazing job.
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http://www.atlas.keystone.edu/research/geology/03HistoricalGeology.htm\n\nThere's a start, just search for the word pennsylvania on the site.\n\nHere's some on the cambrian:\nhttp://www.paleoportal.org/time_space/state.php?state_id=9&period_id=16
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Stop tearing up the soil, Building on the shore especially digging basements adds to the silt problem exponentially.  If every tributary on the Mississippi has 500 houses put on the shores where a basement is dug and it rains thirty days while its under construction, imagine all of the cumulative soil that is ending up in the Ohio, the Missouri, the Platte...etc all the way into the Mississippi and down to The Gulf of Mexico.  It blows my mind why people are dumbfounded when they look at pictures of the Delta 50 years ago and today.  what a huge difference it is and that's not including the dams that are filled to the top with silt. Building next to shore screws up our nations hydroelectric capacity as well as our up river shipping industries
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We had a teacher at school who did a project on erosion that I still remember, so it must have taught us somehting.\n\nHe got a wheelbarrow load of fine sand and piled it into a mound out in theplayground. Then he got a hose and wet the top of it and let some of it wash away. \n\nNot only do you see a practical demonstration of the way that rain erodes mountains and forms streams and rivers but by varying the steepness of the mound or the speed of the water falling on it you can form shallow, broad wandering 'rivers' or steep sided straight valleys and so on.\n\nWe all thought it was prety cool that you could actualy see the rivers form as you watched.
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Try this link\nhttp://en.wikipedia.org/wiki/Amazon_river
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This is a great way to begin understanding the different forces that shape the land.  It is important to remember how the rocks came to be found, Metamorphic rocks from Michigan that may have been dug up from a deep quarry or found on the surface exposed by glacial action.  In N Carolina they could be sedimentary rocks exposed by water erosion.  In Florida they could very likely be calcium carbonate deposited by ancient coral reefs.  A simple understanding of these and other rock forming processes would make a prize winning 4th grade report.  Good Luck!
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I would try out these sites and go from there.  I seemed to be able to find quite a bit of information just searching for "Goleta Beach erosion".  Good luck ad hooray for geology.