Geological Context
The Roxbury Conglomerate, from which this pot is alleged to have come, has been dated as having accumulated between 570 and 593 million years ago and during the Ediacaran Period. It accumulated at the bottom of a deep rift basin, which was filled with marine water, within submarine fan and slope environments. Metamorphism has significantly altered the Roxbury Conglmerate to subgreenschist facies and created within it a well-developed and closely spaced slaty cleavage that is oriented approximately perpendicular to bedding. Tectonism has also flattened, stretched, indented, and fractured the pebbles and associated matrix of the Roxbury Conglomerate to the point that it often has the appearance of flow structure.
Read more about this topic: Dorchester Pot
Famous quotes containing the words geological and/or context:
“The crystal sphere of thought is as concentrical as the geological structure of the globe. As our soils and rocks lie in strata, concentric strata, so do all men’s thinkings run laterally, never vertically.”
—Ralph Waldo Emerson (1803–1882)
“The hard truth is that what may be acceptable in elite culture may not be acceptable in mass culture, that tastes which pose only innocent ethical issues as the property of a minority become corrupting when they become more established. Taste is context, and the context has changed.”
—Susan Sontag (b. 1933)