Puddingstone (rock)
Puddingstone, also known as either pudding stone or plum-pudding stone, is a popular name applied to a conglomerate that consists of distinctly rounded pebbles whose colours contrast sharply with the colour of the finer-grained, often sandy, matrix or cement surrounding them. The rounded pebbles and the sharp contrast in colour gives this type of conglomerate the appearance of a raisin or Christmas pudding.[1][2] There are different types of puddingstone, with different composition, origin, and geographical distribution. Examples of different types of puddingstones include the Hertfordshire, Schunemunk, Roxbury, and St. Joseph Island (Drummond Island) puddingstones.
Hertfordshire puddingstone
Schunemunk puddingstone
The Schunemunk puddingstone, which is exposed extensively on
Roxbury puddingstone
The Roxbury puddingstone is a massive,
Jasper conglomerate
Elsewhere, e. g. in
Other examples
References
- ISBN 3-540-27951-2
- ISBN 0-07-141044-9
- ^ Lovell, B., and J. Tubb (2006) Ancient Quarrying of Rare in situ Palaeogene Hertfordshire Puddingstone. Archived 2010-11-16 at the Wayback Machine Mercian Geologist. 16(3):185-189.
- ^ Perkins, S. (2005) Hertfordshire Puddingstone. Archived 2008-07-05 at the Wayback Machine East Herts Rock Club, Ware, England.
- ^ Herman, G.C., and J.P. Mitchell (1991) Bedrock Geologic Map of the Green Pond Mountain Region from Dover to Greenwood Lake, New Jersey. Geological Map Series no. 91-2. New Jersey Geological and Water Survey, Trenton, New Jersey.
- ^ Merguerian, C., and J.E. Sanders (1992) Guide 17: Delaware Water Gap and Vicinity, New Jersey and Pennsylvania, Trip 23: 20 June 1992. Duke Geological Laboratory, Westbury, New York.
- ^ Anonymous (2013a) The Green Pond Outlier. Geology of National Parks, United States Geological Survey, Reston, Virginia.
- ^ Carto, S.L., and N. Eyles (2011) Chapter 43 The Squantum Member of the Boston Basin, Massachusetts, USA In: E. Arnaud, G.P. Halverson, and G. Shields-Zhou, eds. pp. 475-480, The Geological Record of Neoproterozoic Glaciations. Memoirs no. 36. Geological Society, London, England.
- ^ Passchier, S., and E. Erukanure (2010) Palaeoenvironments and weathering regime of the Neoproterozoic Squantum ‘Tillite’, Boston Basin: no evidence of a snowball Earth. Sedimentology. 57(6):1526–1544.
- ^ Lowey, G.W. (1985) Stratigraphy and Sedimentology of the Lorrain Formation, Huronian Supergroup (Aphebian), Between Sault Ste. Marie and Elliot Lake, Ontario, and Implications For Stratiform Gold Mineralization. Open File Report no. 1154. Geological Survey of Canada, Ottawa, Canada.
- ^ Baumann, S. D. J., T. Arrospide, and A. E. Wolosyzn (2011) Preliminary Redefinition of the Cobalt Group (Huronian Supergroup), in the Southern Geologic Province, Ontario, Canada. Midwest Institute of Geosciences and Engineering, Chicago, Illinois, USA.
- ^ Kopp R. E., J. L. Kirschvink, I. A. Hilburn, and C. Z. Nash. (2005) The Paleoproterozoic snowball Earth: a climate disaster triggered by the evolution of oxygenic photosynthesis. Proceedings of the National Academy of Sciences. 102(32): 11131–6.
- ^ Slawson, C. B. (1933) The Jasper Conglomerate, an Index of Drift Dispersion. The Journal of Geology. 41(5): 546–52.
- ^ ISBN 0-442-26328-7.
External links
- Anonymous (nd) Hertfordshire Puddingstone., East Herts Rock Club, Ware, England.
- Kelley, J.G., (2009) Drummond Island Puddingstone. Drummond Island Tourism Association, Drummond Island, Michigan.
- Share, J. (2011a) Architectural Geology of Boston: The Roxbury Conglomerate (Puddingstone) Part I – The Tectonic Evolution and Journey of Avalonia. Written In Stone...seen through my lens.
- Share, J. (2011a) Architectural Geology of Boston: The Roxbury Conglomerate (Puddingstone) Part II - Quarries and Building Stone. Written In Stone...seen through my lens.
- Tubb, J. (2009) Ancient Quarrying of Rare in situ Palaeogene Hertfordshire Puddingstone (Lovell and Tubb Mercian Geologist August 2006). An update. East Herts Rock Club, Ware, England.