Helderberg Group (English Wikipedia)

Analysis of information sources in references of the Wikipedia article "Helderberg Group" in English language version.

refsWebsite

Global rank English rank

167^th place

198^th place

1researchgate.net

120^th place

125^th place

1nysga-online.org

low place

low place

1,999^th place

1,355^th place

1,528^th place

1,471^st place

mindat.org

"Manlius Limestone, New York, USA". Mindat. 20 March 2024.

nysga-online.org

Demicco, Robet V.; Smith, Jason. "COMPARATIVE SEDIMENTOLOGY OF THE HELDERBERG GROUP IN CENTRAL NEW YORK" (PDF). New York State Geological Association.

researchgate.net

Ver Straeten, Charles; Ebert, James R.; Bartholomew, Alex; Benedict, Lucas; Matteson, Lucas; Shaw, George. "DEVONIAN STRATIGRAPHY AND K-BENTONITES IN THE CHERRY VALLEY – SCHOHARIE VALLEY REGION". Research Gate.

rutgers.edu

rucore.libraries.rutgers.edu

EPSTEIN, ANITA G.; EPSTEIN, JACK B.; SPINK, WALTER J.; JENNINGS, DAVID S. (1967). "Upper Silurian and Lower Devonian Stratigraphy of Northeastern Pennsylvania, New Jersey, and Southeasternmost New York". Geological Survey Bulletin. 1243 – via Rutgers Libraries.

usgs.gov

pubs.usgs.gov

Berdan, Jean. "The Helderberg Group and the Position of the Silurian-Devonian Boundary in North America" (PDF). United States Geological Survey.

ngmdb.usgs.gov

Glaser, J.D., and Brezinski, D.K., 1994, Geologic map of the Cumberland quadrangle, Allegany County, Maryland, Maryland Geological Survey, Scale 1:24,000.