Watts, May Theilgaard
Arboretum Landscape Teaching Aid Series: A River Emerged From Under A Glacier
Identifier
3.19497Format
black marker and watercolor on illustration boardDigitization Status
DigitizedReproduction:
OriginalDimensions
35 cm W x 56 cm H (Item)Extent
1 sheetType
DrawingDate created
mid 20th centuryDescription
Primarily textual teaching aid depicting Arboretum landscape. This material shows the origin of gravel pits at the Arboretum.Header: A RIVER EMERGED FROM UNDER A GLACIER
Text and illustrations from top to bottom:
- [Depicted in stylized scroll with illustration of a steam shovel in gravel pit] The Record: There are several old gravel pits in the Arboretum.
- Interpreting the record:
- 1) A river running under a glacier is confined to a narrow channel, and is, therefore swift. Because of its swiftness it can carry gravel.
- 2) When such a river comes out from under the ice it spreads out and slows down. Slow moving water can carry only fine material. Therefore the river dropped its heavy material.
- 3) When men found these places they dug the gravel out.
Subject - keywords and LC headings
Glacial landformsGlaciers
Drawings -- United States -- 20th century
Pen works -- United States -- 20th century
Gravel Pits
