What Are The Grand Banks
Geographical Location and Background Information:
The Grand Banks are a series of underwater plateaus southeast of Newfoundland on the North American continental shelf. This self also reaches around Nova Scotia and the rest of Newfoundland. These areas are relatively shallow in most areas however ocean depths drop dirastically on the outside edge of the banks. The Grand Banks is a perfect illistration of the Atlantic Ocean's specific plate-tectonic events. The developmental history of the Grand Banks reflects a long history of continuous rifting, thermal events and erosion as the Atlantic Ocean was formed during the break up of the super continent known as Pangea.
Three major rifting events are believed to be responsible for the natural creation of the Grand Banks:
1. The First rifting event was recorded during a period of time where North America and Africa slowly spread apart in the early Jurassic. The result of these large land masses moving apart spreaded sediments and rock on the seafloor to the south of the Grand Banks.
2. The Second rifting/faulting event collected a basin of rock which can be found under the sediments which have collected on the seafloor of the Grand Banks.
3. The Third and final rifting event was known to be the period where the Avalon and Ben Nevis formations were depositied. Followed by this event a thermal phase began which still continues to this day.
However, the Grand Banks were extensively glaciated during the last glacial maximum. By approximately 13,000 years ago, the majority of the ice had melted, leaving the Grand Banks exposed as several islands extending for hundreds of kilometers. It is believed that rising sea levels and intense erosion would have submerged these around 8,000 years ago. It is believed that the erosion process has now flattend the Grand Banks to create the underwater plateaus that are present now. This erosion process continues today.
About This Earth Cache
*Please note the following information before attempting this cache*
The posted coordinates are on a public dock which overlooks the Lunenburg harbour waters. To answer the questions for this cache you will need admission to the Lunenburg Fisheries Museum of the Atlantic. A link can be found here to the official website of the museum. The public dock which the coordinates sit on is about 200m away from the museum. They are both on the same waterfront road and it should be hard to miss.
It is suggested that you tour the town on foot. Parking meters can be expensive and the compact streets can be a headache to drive on. However, I do suggest touring the majority of the town aside from just doing the cache. There are many beautiful sights, small shops and friendly locals which you will want to take in. Take the time to make a day of the cache, explore the town and museum and have fun!
There is public wifi running all along the waterfront so you will likely be able to log this cache while you are on location, or review this listing if you need a refresher on the information provided. The museum has alot to offer besides the information needed on the Grand Banks.
To Log This Cache as Found You Must...
*Email me the answers to the following questions listed below:*
1. What are the two different ocean currents which run through the Grand Banks? Point out which of these currents is warm and cold.
2. Describe rifting.
3. Roughly describe how deep the Grand banks are, a depth range is also acceptable. (ex. 25-60 feet deep)
4. *OPTIONAL* Post a picture of you or your GPS device at either the posted coordinates or the museum docks, overlooking the water.
Thanks for visiting Lunenburg and The Grand Banks Earthcache, I hope you enjoy your time in the area. I highly suggest taking full advantage of what the area has to offer.