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The Roxbury Conglomerate, also informally known as Roxbury puddingstone, is a name for a rock formation that forms the bedrock underlying most of Roxbury, Massachusetts, now part of the city of Boston.
The Roxbury puddingstone is a massive, Ediacaran, clast-supported pebble and cobble conglomerate that occurs within the Brookline Member of the Roxbury Conglomerate that is exposed around Boston, Massachusetts region.
Feb 24, 2022 · Since 1983, Roxbury Puddingstone has been the state Rock of Massachusetts. The official geologic name of the rock is Roxbury Conglomerate and it is because it underlies so much of Roxbury that the town of Roxbury (or Rocksbury on early maps) got its name.
Mar 4, 2010 · Also known as puddingstone, the Roxbury consist of varicolored pebbles, cobbles, and boulders suspended in a fine grained matrix. In the field, the rock ranges in color between light blue-gray and dark gray. Water often stains the iron in many of the blocks to a red-orange color.
Oct 26, 2021 · Roxbury Puddingstone: Found in and around Boston, Massachusetts, and is one of the reasons this stone is the official state stone.
Jul 26, 2018 · Roxbury Conglomerate, also known as Roxbury Puddingstone, is the state rock of Massachusetts. It forms the bedrock underlying most of Roxbury and can be seen around the community. It inspired a...
- 1 min
- 1702
- City of Boston
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Mar 13, 2014 · Roxbury Puddingstone is a sedimentary conglomerate, comprising a fine-grained matrix, or silt (the pudding), within which are inclusions of rock, mostly rounded granite. The silt is a mixture of rock flour and the residue of ash left from early volcanic eruptions.
