Discover and read the best of Twitter Threads about #CitadelHill
Most recents (3)
It's a wee bit cooler today but nothing like 126,000 years ago when the #AtlanticBubble was covered in ice!
The last ice age ended 10,000 years ago but there have been glacial periods in #NovaScotia on and off for at least 500,000 years...
#nspoli #cbpoli #capebreton @NS_Museum
The last ice age ended 10,000 years ago but there have been glacial periods in #NovaScotia on and off for at least 500,000 years...
#nspoli #cbpoli #capebreton @NS_Museum
During periods of climatic cooling, ice sheets develop and advance, aided by the reflection of the sun's light from the white snow surface. Sea levels drop as ocean water is used to make ice. The glaciers grow, coalesce and flow all the way out to...
#nspoli #cbpoli #Novascotia
#nspoli #cbpoli #Novascotia
The #TimesSquare ball that's lowered each #NewYear is made of 2688 Waterford Crystal triangles. Crystal is made of minerals such as #silica, #potash and lead. It's frame is made of aluminum. There have been 7 different balls since 1907. The 1st was made of #iron and wood.
#nspoli
#nspoli
Dropping a ball to mark time started in 1833 in #Greenwich, #England, at the #RoyalObservatory. A ball was lowered each day at 1 pm so nearby ships could set their chronometers (a navigational instrument).
#nspoli #novascotia #ns
#nspoli #novascotia #ns
About 150 balls were used around the world after the success at #Greenwich, but few still work. #CitadelHill’s noon cannon served a similar purpose – it kept the military running on time and allowed ships to set their chronometers.
#nspoli #novascotia #ns
#nspoli #novascotia #ns
#GeorgesIsland is a #drumlin - rocks, gravel, sand and clay deposited by #glaciers as the last ice age ended 12,000 years ago. #NovaScotia has many drumlins including #CitadelHill and #OakIsland.
#nspoli @AndyFillmoreHFX #NS #geology #mining #minerals
cbc.ca/news/canada/no…
#nspoli @AndyFillmoreHFX #NS #geology #mining #minerals
cbc.ca/news/canada/no…
@AndyFillmoreHFX The word #drumlin comes from the #Gaelic word druim, meaning “rounded hill” or “mound.”
#nspoli @AndyFillmoreHFX #NovaScotia #NS #geology #mining #minerals #Halifax #georgesisland
#nspoli @AndyFillmoreHFX #NovaScotia #NS #geology #mining #minerals #Halifax #georgesisland
@AndyFillmoreHFX #GeorgesIsland was just a hill. #Halifax Harbour was mostly dry land after the last ice age - lakes and a stream that ran from the #SackvilleRiver to the sea. Georges became an island as rising seas filled the harbour, a process completed 5700 years ago.
#nspoli @AndyFillmoreHFX
#nspoli @AndyFillmoreHFX
