Where on Earth? - October 2018

by The American Geosciences Institute
Friday, September 28, 2018

Click to enlarge photo

Clues for October 2018:

  1. This colorfully named site is found on the shores of a gulf on the west coast of a Canadian island province, within a national park designated as a UNESCO World Heritage Site.

  2. The 60-meter-thick rock sequence formed at the end of the Cambrian and the beginning of the Ordovician when turbidites emplaced layers of limestone at the base of deep-sea slope in the Iapetus Ocean. The limestone layers were then sandwiched between thin layers of shale.

  3. The International Union of Geological Sciences has designated this geologic site a Global Stratotype Section and Point for the Cambro-Ordovician boundary.

Name the geologic site & its host national park.

Scroll down for the answer

Answer: The Green Point Geological Site in Gros Morne National Park in Newfoundland, Canada, features a 60-meter-thick sequence formed when turbidites emplaced layers of limestone at the base of a deep-sea slope in the Iapetus Ocean, which were then sandwiched between paper-thin layers of shale. Photo is by Heather McArdle.

October 2018 Winners: Arthur Astarits (Portland, Maine) Ava Bear (Clayton, N.C.) Ian Knight (St. John’s, Newfoundland & Labrador, Canada) Frank Mayer (Saratoga, Calif.) Cynthia A. Stiles (Woodland, Calif.)

Visit the Where on Earth? archive.

EARTH also welcomes your photos to consider for the contest. Learn more about submitting photos.

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