Discover and read the best of Twitter Threads about #malagash
Most recents (3)
Nova Scotia #salt saved lives this winter – all our road salt comes from the #Pugwash salt mine. With snowstorms now over (we hope!), here’s a history of salt mining in #NovaScotia!
#nspoli #cbpoli #capebreton
@MLAElizabethNS @ZannLenore
#nspoli #cbpoli #capebreton
@MLAElizabethNS @ZannLenore
327-342 million years ago, global sea levels rose and fell many times. This repeatedly flooded #NovaScotia with what we call the Windsor Sea. #NS was near the equator at the time so the sea also evaporated repeatedly in the heat.
#nspoli #cbpoli #capebreton
#nspoli #cbpoli #capebreton
The evaporation of sea water left deposits of successive layers of salt. This process was repeated for millions of years until the original salt beds were far below earth’s surface. Subterranean pressures and heat compressed the salt into #NovaScotia’s huge rock #salt deposits.
Mining is part of #NovaScotia’s heritage and many communities benefit from tourism attractions related to historical mining. In fact, this 1889 flyer advertised #gold mines near #Caledonia, #QueensCounty, as tourist attractions to people from Boston!
#nspoli @RegionofQueens #NS
#nspoli @RegionofQueens #NS
It says, “Many tourists will find a profitable and interesting diversion in visiting the various gold mines within easy reach of their boarding places.”
#nspoli #novascotia #gold
#nspoli #novascotia #gold
It describes gold processing as “curious and interesting, and well repays an intelligent sight-seer for a few days of travel and observation.”
#nspoli #novascotia #gold
#nspoli #novascotia #gold
We love getting questions about #mining, #minerals and #geology! In response to our post yesterday about how #NovaScotia’s #gold deposits formed, we were asked about “barrel quartz.” Here’s our answer:
#nspoli #NS #CB #capebreton #Waverley @waverleyns @SteveStreatch @Bill_Horne
#nspoli #NS #CB #capebreton #Waverley @waverleyns @SteveStreatch @Bill_Horne
Barrel quartz is a term used to describe the #gold deposit on #LaidlawHill in #Waverley in the 1800s. It isn’t a technical/geological term. The miners used it to describe what they saw: folded, gold-bearing quartz veins whose outcrops are corrugated and resemble barrels.
#nspoli
#nspoli
The quartz veins that host the #gold are hard and surrounded by soft shale. When the rocks were compressed by forces resulting from tectonic plate collision, the quartz vein buckled to form barrel shapes but the surrounding shale reacted like toothpaste and absorbed the pressure.
