The Tupelo Bay Formation is a geologic formation in South Carolina.
 It preserves fossils dating back to the Paleogene period.
The Georgian Bay Formation is a geologic formation in Michigan.
 It preserves fossils dating back to the Ordovician period.
The Ellis Bay Formation is a geologic formation in Quebec.
 It preserves fossils dating back to the Ordovician period.
The Sargent Bay Formation is a geologic formation in Quebec.
 It preserves fossils dating back to the Silurian period.
The Bush Bay Formation is a geologic formation in Michigan.
 It preserves fossils dating back to the Silurian period.
The Egmont Bay Formation is a geologic formation in Prince Edward Island.
 It preserves fossils dating back to the Carboniferous period.
The Shallow Bay Formation is a geologic formation in Newfoundland and Labrador.
 It preserves fossils dating back to the Ordovician period.
The Red Bay Formation is a geologic formation in Florida.
 It preserves fossils dating back to the Neogene period.
The Back Bay Formation is a geologic formation in New Brunswick.
 It preserves fossils dating back to the Silurian period.
New Brunswick (French: "Nouveau-Brunswick" ; ) is one of Canada's three Maritime provinces (together with Prince Edward Island and Nova Scotia) and is the only constitutionally bilingual (English–French) province.
 The principal cities are Fredericton, the capital, Greater Moncton, currently the largest metropolitan (CMA) area and the most populous city, and the port city of Saint John, which was the first incorporated city in Canada and largest in the province for 231 years until 2016.

Question: Which one of Canada's three Maritime provinces is The Back Bay Formation  a geologic formation in
Answer: New Brunswick