Where on Earth? - October 2018

Where on Earth - October 2018

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.


The American Geosciences Institute

AGI was founded in 1948, under a directive of the National Academy of Sciences, as a network of associations representing geoscientists with a diverse array of skills and knowledge of our planet.

Monday, October 1, 2018 - 06:00