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Mining Association of Nova Scotia Profile picture
@MiningNS
Jul 30, 2020 • 9 tweets • 11 min read • Read on X
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There are fingers of flysch reaching into the sea at #GreenBay Beach, #Lunenburg County. Flysch is a sedimentary rock, meaning it was formed from sediments.
Lear more about it in this thread!
#nspoli #cbpoli #novascotia @TourismNS @BernJordanMP @MarkFurey1 ImageImage
Flysch is a sedimentary rock, meaning it was formed from sediments such as mud, silt and sand that were compressed into rock. Much of southern #NovaScotia is underlain by flysch and you can see it at places like #theOvens, Taylor's Head Provincial Park...
#nspoli #cbpoli Image
...Western Head by #Liverpool and #BlueRocks by #Lunenburg. You can recognize flysch because it has this great layered look.
Flysch forms in offshore basins adjacent to continents. Underwater sediments, like those being deposited offshore Atlantic Canada today...
#nspoli #cbpoli Image
...from rivers and streams, are occasionally disturbed by minor seismic activities that result in large amounts of sediment flowing down underwater slopes, known as turbidity currents.
#nspoli #cbpoli #novascotia Image
(One such seismic event in 1929 offshore of Newfoundland displaced approximately 200 cubic kilometres of sediment downslope that resulted in a local tsunami and broke several transatlantic cables).
#nspoli #cbpoli #novascotia Image
Over time these layers can accumulate to form kilometers of layered sediment that can be transformed by heat and pressure into rock.
#nspoli #cbpoli #novascotia Image
The flysh sedimentary rocks that are so well exposed along #NovaScotia's coast formed hundreds of millions of years ago and were later deformed (folded and tilted) as a result of plate tectonic activity so many of the layers we see are inclined.
#nspoli #cbpoli Image
The different layers of sediments are easy to see because they are often different colours, like in the pictures below. Also, over time, the softer rock layers weather out, creating gaps in the layers and accentuating those that remain.
#nspoli #cbpoli #novascotia Image
Some other flysch you might recognize: Dragonstone Beach in #GameofThrones! It is really Itzurun Beach in Spain and it’s known for its amazing flysch.
#nspoli #cbpoli #novascotia Image

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More from @MiningNS

Mining Association of Nova Scotia Profile picture
Feb 25, 2021
@nsgov announced new rebates for electric vehicles yesterday. Mining makes #greentech like electric cars possible because they are mostly made of minerals and metals.
#nspoli @KeithIrvingNS @IainTRankin @NS_Energy_Mines @ns_environment @ChenderMLA @AllanMacMaster @MLAChuckPorter Image
For example, an e-car has 183 pounds of copper wiring in it because copper is used in every major component from the motor to the inverter and the electrical wiring. There is about four times more copper in an e-car than in a car with an internal combustion engine.
There are about 400 electric cars on Nova Scotia roads - a total of over 73,000 pounds of copper!
An electric car uses 25-50 grams of silver, so Nova Scotia’s 400 e-cars contain about 15,000 grams of it.
Read 9 tweets
Mining Association of Nova Scotia Profile picture
Sep 23, 2020
The Morris Street Engine House has been declared a municipal heritage property!
#Halifax’s Fire Station #2, as it is also called, was built 1907-08 of reinforced concrete.
Here's the story!
#nspoli @HFXFireHistory @HRMFireNews @hfxfire @HFXFirefighters @hfxgov @MikeSavageHFX
Concrete is a mixture of aggregates and paste. The aggregates are sand and gravel or crushed stone; the paste is water and portland cement. (The terms cement and concrete are often used interchangeably, but cement is actually an ingredient of concrete...
#nspoli
...Cement is the glue that holds concrete together.)
Reinforced concrete means the concrete is poured over a frame, usually steel bars, that give the structure greater strength.
#nspoli
Read 12 tweets
Mining Association of Nova Scotia Profile picture
Sep 21, 2020
We love getting questions about mining, minerals and geology! We were asked about sinkholes and whether they are a risk when walking in the woods.
#nspoli #cbpoli #novascotia #capebreton @oxfordsinkhole ImageImage
The short answer is yes, sinkholes are real but no, they are not a major risk and should not prevent you from enjoying outdoor activities.
Most natural sinkholes are caused by groundwater naturally eroding rocks like gypsum, salt and limestone which are water-soluble.
#nspoli Image
The water erodes the rock, leaving an underground cavern. Eventually, the weight of the rock and earth above the cavern causes the sinkhole to form. Sinkholes can form either gradually (i.e. a small depression appears and perhaps grows larger over time) or by sudden collapse. Image
Read 18 tweets
Mining Association of Nova Scotia Profile picture
Sep 20, 2020
We love getting questions about mining, minerals and geology! We were asked about the historic #NewCampbellton coal mine in #VictoriaCounty.
#nspoli #cbpoli #novascotia #capebreton #nshistory
@JaimeBattiste ImageImage
The New Campbellton coal mine was opened in 1862 by Charles J. Campbell, a former Member of Parliament, Member of the Legislative Assembly and executive council member. The community had been named Kelly’s Cove but was changed to New Campbellton in 1862 in honour of Mr. Campbell. Image
A sample of New Campbellton’s coal was sent to the 1865 Dublin Exhibition and “was very favorably noticed by the Judges,” according to a report.
#nspoli #cbpoli #novascotia #capebreton #nshistory Image
Read 18 tweets
Mining Association of Nova Scotia Profile picture
Sep 19, 2020
Mining built #NovaScotia!
#Halifax was founded in 1749 and its first court house is reported to have been built by 1754 on the northeastern corner of Buckingham + Argyle streets. After the building burned in 1789, the courts were temporarily housed in various buildings.
#nspoli ImageImage
In April 1851 a bill to provide Halifax with a county court house was passed. Mr. H.G. Hill, a prominent #Halifax architect, prepared a plan for a wooden building.
However, since the records of the county, wills, deeds and other papers of public office were...
#nspoli #novascotia Image
...to be stored in the court house, it was important that the building be fire-proof. Also, a number of serious fires in #Halifax in 1857 led to the passage of a bylaw that required large buildings be made of stone or brick, so Hill's plans for a wooden building were abandoned. Image
Read 10 tweets
Mining Association of Nova Scotia Profile picture
Sep 18, 2020
The Sullivan Creek #coal mine, before and after!
It's one of several mines reclaimed around #AlderPoint #CapeBreton in the late 1900s/early 2000s - examples of how mining makes temporary use of land and then land can be used other ways.
#nspoli #cbpoli #novascotia @JaimeBattiste ImageImage
The first mine in the area was the Scotia Mine, or #NovaScotia Steel & Coal Company No. 4 Colliery, on Toronto Road, which operated on the Sydney Main (Harbour) Seam from 1915 to 1921.
#nspoli #cbpoli #novascotia @JaimeBattiste ImageImage
Coal quality and structural issues (including water inflow) plague the Harbour Seam west of Florence so upon closure of the colliery, production on the Harbour Seam was limited to the Company’s No. 3 Colliery in Florence, which had opened in 1902...
#nspoli #cbpoli #novascotia ImageImage
Read 19 tweets

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