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janper44



Registered: December 2009
Posts: 3,625
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A diorama I found at the Manitoba Museum from the Ordovician Period which lasted almost 45 million years, beginning 488.3 million years ago and ending 443.7 million years ago. During this period, the area north of the tropics was almost entirely ocean, and most of the world's land was collected into the southern supercontinent Gondwana.


During this time what is now Manitoba was covered by a warm shallow sea. The diorama portrayed many of the marine creatures that lived in that shallow sea.


Many of the animals pictured such as cepholopods and trilobites produced calcium carbonate from which limestone is composed. This organic limestone is abundant in such areas of Manitoba as Tyndall, Stony Mountain and Churchill.


CS5 auto contrast
Nik detail extractor (25,6,6,normal)


f3.5 1/20 22mm


Taken July 26, 2017.
· Date: Sun July 30, 2017 · Views: 99 ·
Keywords: sea shells, diorama, Ordovician Period
Camera Make / Model: Nikon D7100
Lens Make / Focal Length: AF-S Nikkor 18-140mm
Filter / Type Used: uv
Flash / Type Used: n/a
Event e.g. Grand Prix, Birthday, Sunrise: Manitoba Museum visit
State / County / Area Image taken: Winnipeg, Mb.
Processing Software Applications Used
CS5, Nik
Country Image Taken
Canada

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Diane

Registered: February 2009
Posts: 1,933
Tue August 1, 2017 1:51am

Oh yes, sea shells in their element. Love the very natural colors and variety of shell life. Perfect submission - fits the theme exactly.
olddingo

Registered: November 2008
Posts: 2,744
Sun August 6, 2017 1:39am

Excellent Jan, wonderful photo and notes,
David

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