Grand Falls Earthcache EarthCache
-
Difficulty:
-
-
Terrain:
-
Size: 
(not chosen)
Please note Use of geocaching.com services is subject to the terms and conditions
in our disclaimer.
Earthcache on a 3.5 mile dirt road off the beaten path.
The Grand Falls dam was constructed in 1912. It is located approximately 6 miles north, northeast of the town of Princeton, out in the Kellyland area. Access is via the Grand Falls road. This road has been used for the lumber mill operations, and the surrounding land is owned by the former Georgia Pacific Mill. This is a public access road. This area is a site for locals and visitors to launch and land from fishing trips down the St. Croix river.
On each side of this dam is an international border. Canada is on the far side, you are visiting the American side. Do not walk across the dam onto the Canadian side. Be mindful of all posted notices to the public. You may encounter a Border Patrol/Customs and Immigration officer patroling this area. They are aware of current geocaches in this area. Do not try to be stealthy around them. Instead, let them know exactly what you are doing here.
Notice the bedrock at this dam site. If the dam is wide open, you can't appreciate the bedrock up at the actual dam, which is why you are below it at the listed coordinates. You can also see the intensely fractured bedrock close up from here, in an area the water doesn't rise too high. From here, you can notice the various working conditions of the dam. At times is is fully open and flowing, at other times it is partially open and quite empty.
The bedrock is considered to be on a fault line which follows the Pocomoonshine Mountain fault to this area at the dam. The area has been researched and determined to be Nurumbega-related faults, but this was related to the isoclinal folding and is not a current or recently active fault line. Also, the offfset hills are not signs of postglacial deformation.
The bedrock at the Grand Falls dam is chlorite-grade metasandstones, metasiltstones and metapelites of the Flume Ridge Formation. These rocks exhibit upright isoclinal folds with vertical hinge surfaces.
The outcrops at this dam are multi strata and form cliffs at the basin of the dam.
To log this cache you must answer 2 questions via email:
1. What is your approximate guess of how many feet high the isoclinal folds rise, at the basin of this dam?
2. Based on your best guess, was this dam created by nature, man-made or both?
Your best view is from the cache coordinates, but you could probably gather this information from the walkway/lookout atop the dam.
FTF congrat go to peace out!
Additional Hints
(No hints available.)