Revisiting an old image for reprocessing. Pelham Bay has lots of Fordham gneiss. Here is a dense article on the Bedrock Geology of New York City: More than 600 m.y. of geologic history ( I love geology. It was my manor at Hunter College.

Geology lesson: Boudinage is a structure which is sometimes present in metamorphic rocks apparently as a result of tension and in which a competent bed is thinned and thickened so that it resembles in cross section a string of sausages (Webster’s).

Hunter Island granite with boudinage, Pelham Bay, NY 10/29/2001

4 thoughts on “Boudinage

  1. shoreacres 2021-12-19 / 9:23 pm

    When I saw the word ‘boudinage’ the first thing that came to mind was that Cajun delicacy known as boudin. Sure enough: when I checked the etymology, I found this: “Lohest (1909) coined the term ‘boudinage’ which is derived from the French word “boudin”, meaning blood sausage. Boudins were first observed and described by Belgian geologists in the Collignon quarry near Bastogne in the Ardennes (Belgium).”

    So: admire example of boudinage, but eat boudin. Very interesting!

    Liked by 1 person

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