Discover and read the best of Twitter Threads about #gypsum
Most recents (16)
Maybe fuelled by recent claims that #Neolithic hunters were too "simple" and thus not capable of cultural achievements, there seems to be a misunderstanding about the "#pottery" part in #PrePotteryNeolithic (PPN).
They actually *did* use vessels. Just other vessels.
A short š§µ:
They actually *did* use vessels. Just other vessels.
A short š§µ:
Well known and clearly associated with #PrePotteryNeolithic contexts are e.g. #StoneVessels from different places like #KƶrtikTepe in Turkey or #JerfElAhmar and #TellAbr in Syria as well as (often fragmented though) many more related sites (including Gƶbekli Tepe by the way).
Bringing up the #GƶbekliTepe fragments since they illustrate why finding complete vessels is comparably rare: the material was too valuable to not re-use it.
@lauradietrich_, @odietrich_, & myself discussed the "afterlife" of such #StoneVessels here:
jensnotroff.files.wordpress.com/2020/10/ii.20_ā¦
@lauradietrich_, @odietrich_, & myself discussed the "afterlife" of such #StoneVessels here:
jensnotroff.files.wordpress.com/2020/10/ii.20_ā¦
Threadš§µ | #KansasFires
While working live on wildfires/storms, I frequently discover mapping crossovers to my quake work.
Today I'm tracking yesterday's fires + March 2017/2020 fires & mapping with current/past #Kansas #earthquake swarms + faults. ā¬ļøš
#kswx #ksfire #wildfire
While working live on wildfires/storms, I frequently discover mapping crossovers to my quake work.
Today I'm tracking yesterday's fires + March 2017/2020 fires & mapping with current/past #Kansas #earthquake swarms + faults. ā¬ļøš
#kswx #ksfire #wildfire
#Manatee County, Florida
1855
pop. 322,833 (2010)
total area: 893 square miles
743 sq miles land, 150 sq miles water
county seat and largest city is Bradenton
en.wikipedia.org/wiki/Manatee_Cā¦
1855
pop. 322,833 (2010)
total area: 893 square miles
743 sq miles land, 150 sq miles water
county seat and largest city is Bradenton
en.wikipedia.org/wiki/Manatee_Cā¦
9 Nov 2016
āDonald Trump, Hillary Clinton: How #Manatee County Votedā
āManatee County voters overwhelmingly supported Republican Donald Trump in Tuesday's election.ā
āMost counties in the Tampa Bay area went red in Tuesday's election.ā¦ā
patch.com/florida/bradenā¦
āDonald Trump, Hillary Clinton: How #Manatee County Votedā
āManatee County voters overwhelmingly supported Republican Donald Trump in Tuesday's election.ā
āMost counties in the Tampa Bay area went red in Tuesday's election.ā¦ā
patch.com/florida/bradenā¦
āā¦ #Manatee County voters also went red in the 2012 election. In that race, they favored Republican Mitt Romney by 55.65 percent to President Barack Obama's 43.22 percentā
patch.com/florida/bradenā¦
patch.com/florida/bradenā¦
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
#nspoli #cbpoli #novascotia #capebreton @oxfordsinkhole
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
Most natural sinkholes are caused by groundwater naturally eroding rocks like gypsum, salt and limestone which are water-soluble.
#nspoli
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.
I rolled the dice to randomize the #MinCup2020 bracket.
Iām pretty sure my dice hate me. These are both SUCH GOOD MINERALS, and Iām still working on a deadline so canāt thread yet.
Iām pretty sure my dice hate me. These are both SUCH GOOD MINERALS, and Iām still working on a deadline so canāt thread yet.
My campaign for #gypsum in #MinCup2019:
Weāve played a few games with #gold.
I played out the consequences of some seriously creepy fiction:
& you thoroughly investigated gold during #YouFindARock:
I played out the consequences of some seriously creepy fiction:
& you thoroughly investigated gold during #YouFindARock:
We love getting questions about mining, minerals and geology! We were asked about the historical #gypsum quarry which today is the beautiful Kempt Quarry Recreation Site in #WestHants.
Here's the story:
#nspoli #cbpoli #novascotia @MLAChuckPorter @RegMunWWH #nshistory
Here's the story:
#nspoli #cbpoli #novascotia @MLAChuckPorter @RegMunWWH #nshistory
Gypsum quarrying began in #HantsCounty in the 1700s when farmers exported it as fertilizer. #Gypsum fixes alkaline (high pH) soil. US inventor Ben Franklin learned this from the French and brought the idea to the US in 1785.
#nspoli #cbpoli #novascotia @MLAChuckPorter @RegMunWWH
#nspoli #cbpoli #novascotia @MLAChuckPorter @RegMunWWH
#Gypsum was discovered on #CapeBretonās #IsleMadame in the 1800s. The most significant deposit is on the north side of the island, in the Lennox area.
Here's the history of the Lennox gypsum quarry!
#nspoli #cbpoli #novascotia
@TourismCB @TourismNS @mikekelloway @alanapaon
Here's the history of the Lennox gypsum quarry!
#nspoli #cbpoli #novascotia
@TourismCB @TourismNS @mikekelloway @alanapaon
The Lennox #gypsum quarry opened around 1865. Prior to 1873, about 1500 tons were exported yearly but there was little production during the rest of the 1870s.
#nspoli #cbpoli #novascotia #capebreton
#nspoli #cbpoli #novascotia #capebreton
A major hurricane in August 1873 destroyed the nearby wharf and building and the structures were not replaced in the 1870s. In fact, the August Gale, as it was called, destroyed 900 buildings and 1,200 boats in #NovaScotia, and killed as many as 600 people, according to reports.
Most walls in #NovaScotia contain gypsum from the world's largest surface gypsum mine in #Milford, #NS.
Safety is the main reason #gypsum is used in wallboard. The rock is 21% water at the molecular level and is therefore fire resistant.
#nspoli #cbpoli #capebreton
Safety is the main reason #gypsum is used in wallboard. The rock is 21% water at the molecular level and is therefore fire resistant.
#nspoli #cbpoli #capebreton
327-342 million years ago, global sea levels rose and fell many times. This repeatedly flooded Nova Scotia with what we call the Windsor Sea. #NovaScotia was near the equator at that time so the sea also evaporated repeatedly in the tropical sun.
#nspoli #cbpoli #capebreton
#nspoli #cbpoli #capebreton
This process gave us huge gypsum deposits because gypsum forms when water high in calcium and sulfate evaporates, leaving the calcium and sulfate behind as sediment. The sediment builds up and is eventually turned into gypsum rock by heat and pressure.
#nspoli #cbpoli #novascotia
#nspoli #cbpoli #novascotia
Reclaimed mines are often hidden in plain view! For example, this beautiful lake is the former #Cheticamp #gypsum quarry in Cape Breton. Hereās the history of this amazing site:
#nspoli #cbpoli #novascotia #capebreton #nshistory
@mikekelloway @AllanMacMaster @BAMacQuarrie
#nspoli #cbpoli #novascotia #capebreton #nshistory
@mikekelloway @AllanMacMaster @BAMacQuarrie
Father P. Fiset, parish priest in #Cheticamp, and his nephew Louis, a doctor, formed the Great Northern Mining Company about 1907. To raise funds, they sold shares for 5 cents each in Cheticamp. Shares were also sold in Quebec where the Fisets were well-known.
#nspoli #cbpoli
#nspoli #cbpoli
In spring 1908 equipment for a mill was delivered to Government Wharf and hauled by horse and cart to Bell-Marche where the mill was built. The first #gypsum rock went through the mill on August 20, 1908.
#nspoli #cbpoli #novascotia #capebreton #nshistory
#nspoli #cbpoli #novascotia #capebreton #nshistory
We love getting questions about mining, minerals and geology! We were asked about sand and fieldstone in the world-class #gypsum deposit in #Milford, Nova Scotia. This thread is our answer:
#nspoli #cbpoli #novascotia #capebreton #mining #geology @mmillershubie @SeanFraserMP
#nspoli #cbpoli #novascotia #capebreton #mining #geology @mmillershubie @SeanFraserMP
327-342 million years ago, global sea levels rose and fell many times. This repeatedly flooded Nova Scotia with what we call the Windsor Sea. #NovaScotia was near the equator at that time so the sea also evaporated repeatedly in the tropical sun.
#nspoli #cbpoli #capebreton
#nspoli #cbpoli #capebreton
This process gave us huge gypsum deposits because gypsum forms when water high in calcium and sulfate evaporates, leaving the calcium and sulfate behind as sediment. The sediment builds up and is eventually turned into gypsum rock by heat and pressure.
#nspoli #cbpoli #novascotia
#nspoli #cbpoli #novascotia
Former #mines and #quarries often become parks and protected areas. This thread shows some examples in #Halifax, #Dartmouth, #Shelbourne, #Truro, #LunenburgCounty and #KemptShore.
#nspoli #cbpoli #NovaScotia #NS #mining #reclamation
#nspoli #cbpoli #NovaScotia #NS #mining #reclamation
#KiwanisPark in #Truro was developed as a gravel pit in the 1930s to help build Route 2. Like a lot of former pits and #quarries, the site has filled with water and become a natural oasis in the heart of the town.
#nspoli #cbpoli #novascotia #NS #mining #reclamation @TownofTruro
#nspoli #cbpoli #novascotia #NS #mining #reclamation @TownofTruro
Former mines and quarries are often hidden in plain view! #PointPleasantPark contains 50+ former quarries. The stone was used to build walls and forts in the park. For example, slate from the #QuarryPond helped build the #MartelloTower.
#nspoli #cbpoli #novascotia #NS #mining
#nspoli #cbpoli #novascotia #NS #mining
#NovaScotia has historically been one of the worldās largest suppliers of #gypsum. The mine in #Milford is the world's largest surface gypsum mine. Gypsumās main use is as an ingredient in wallboard.
#nspoli #cbpoli #NS #CB #capebreton
@KeithIrvingNS @mmillershubie @EastHantsNS
#nspoli #cbpoli #NS #CB #capebreton
@KeithIrvingNS @mmillershubie @EastHantsNS
When #gypsum mining started in #NovaScotia in the late 1700s, it was done by farmers who extracted blocks from their farms, hauled it by horse and cart to #Windsor and sold it to local traders. It was then exported to the US east coast for use as fertilizer.
#nspoli #ns
#nspoli #ns
#Gypsum fixes alkaline (high pH) soil. US inventor #BenFranklin learned this from the French and brought the idea to the US in 1785.
#nspoli #cbpoli #NovaScotia #CapeBreton #NS #cb
#nspoli #cbpoli #NovaScotia #CapeBreton #NS #cb
The #mineral #howlite was discovered near #Windsor #NS in 1868 by #HenryHow, a prof at #KingsCollege. He was alerted to it by #miners at a quarry where it was a strange impurity in the #gypsum. Its main use is in jewelry, partly because it's porous and can be easily dyed.
#nspoli
#nspoli
The #mineral #mordenite is named for #Morden, #NovaScotia, where #HenryHow discovered it in 1864. It's used to clean up chemical spills, in animal feed and for water treatment.
#nspoli #NS #minerals #geology #mining
#nspoli #NS #minerals #geology #mining
#Morden was originally called #FrenchCross after a memorial to #Acadians who died fleeing the #British expulsion of the #French in 1755. A #driftwood cross stood there from 1756 to ~1820. Replacement crosses were built in 1887, 1924 and the current stone one in 1964.
#nspoli #NS
#nspoli #NS
We love TV show #TheCurseOfOakIsland which is about one of #NovaScotia's greatest mysteries! Here is a #geological take on the treasure hunt that highlights the searchers' challenge in figuring out what really happened on #OakIsland.
#nspoli #NS
@CurseOfOak
@HISTORY
#nspoli #NS
@CurseOfOak
@HISTORY
Like many islands in #MahoneBay, #NovaScotia, #OakIsland is a #drumlin - rock, sand, gravel and clay deposited by glaciers as the last ice age ended
about 12,000 years ago. Actually, the island is 4 connected drumlins.
#nspoli #NS
@CurseOfOak
@HISTORY
about 12,000 years ago. Actually, the island is 4 connected drumlins.
#nspoli #NS
@CurseOfOak
@HISTORY
Because #OakIsland is #drumlins, it may have layers of #gravel below sea
level which could explain the flood tunnel mystery. Searcher shafts might
just be intersecting sea water naturally flowing underground through porous gravel.
#nspoli #NS
@CurseOfOak
@HISTORY #NovaScotia
level which could explain the flood tunnel mystery. Searcher shafts might
just be intersecting sea water naturally flowing underground through porous gravel.
#nspoli #NS
@CurseOfOak
@HISTORY #NovaScotia
With my wife, we are building an extremely ecological self-sufficient house (made of straw, wood and earth), while being modern too.
The house is out of the grid for electricity & water, and there is no heating system.
The construction has finally started after 1.5 years.
1/3
The house is out of the grid for electricity & water, and there is no heating system.
The construction has finally started after 1.5 years.
1/3
We share our story on a blog, in French only so far (I will translate the story in English later).
Last week was the first day, lamaisonvivante.blog/2019/04/04/carā¦
2/3
Last week was the first day, lamaisonvivante.blog/2019/04/04/carā¦
2/3
And yesterday it has started for real, lamaisonvivante.blog/2019/04/08/carā¦
If you have any questions, please ask. Answers will land on the blog, but I will be happy to answer here now.
Shoot.
3/3
If you have any questions, please ask. Answers will land on the blog, but I will be happy to answer here now.
Shoot.
3/3
I had exactly 30min entry-to-exit to explore @hmns.
Iād heard they have a solid collection of trilobites & the massive cut blue sapphire Siren of Serendip is a special exhibit.
But with the clock ticking down, I raced up the stairs & tumbled into Cullen Hall of Gems & Minerals.
Iād heard they have a solid collection of trilobites & the massive cut blue sapphire Siren of Serendip is a special exhibit.
But with the clock ticking down, I raced up the stairs & tumbled into Cullen Hall of Gems & Minerals.
#Crocoite: Shiny red-orange spiketastic lead chromate.
Despite being named for colour-matching saffron, lead makes it firmly āDo Not Lick.ā
This particular spikefren is from Adelaide Mine, Tasmania, sticking with āeverything cute in Australia can secretly kill youā theme.
Despite being named for colour-matching saffron, lead makes it firmly āDo Not Lick.ā
This particular spikefren is from Adelaide Mine, Tasmania, sticking with āeverything cute in Australia can secretly kill youā theme.
#Fluorite: a honkinā massive cube of calcium fluorite with that particular dull-waxy translucence I wanna pet so bad.
No UV light to see if itād fluoresce pretty colours for me.
From Nikolaevskiy Mine in Russia where hot sulfide solutions crystallized in limestone caverns.
No UV light to see if itād fluoresce pretty colours for me.
From Nikolaevskiy Mine in Russia where hot sulfide solutions crystallized in limestone caverns.
