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Analyzing Heterogeneity in Artificially Matured Samples of Bakken Shales (2018)


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Croke, M.R., 2019, Analyzing Heterogeneity in Artificially Matured Samples of Bakken Shales (2018): U.S. Geological Survey data release,


Solid organic matter (OM) in sedimentary rocks produces petroleum and solid bitumen when it undergoes thermal maturation. The solid OM is a 'geomacromolecule', usually representing a mixture of various organisms with distinct biogenic origins, and can have high heterogeneity in composition. Programmed pyrolysis is a common conventional method to reveal bulk geochemical characteristics of the dominant OM while detailed organic petrography is required to reveal information about the biogenic origin of contributing macerals. Despite advantages of programmed pyrolysis, it cannot provide information about the heterogeneity of chemical compositions present in the individual OM types. Therefore, other analytical techniques such as Raman spectroscopy [...]


Point of Contact :
Paul C Hackley
Originator :
Mary R Croke
Metadata Contact :
Eric A Morrissey
Publisher :
U.S. Geological Survey
Distributor :
U.S. Geological Survey - ScienceBase
SDC Data Owner :
Energy Resources Program
USGS Mission Area :
Energy and Minerals

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Data were collected to asses the potential of Raman spectroscopy in revealing chemical changes in organic materials after artificial maturation, in order to improve pyrolysis protocols.



  • Geology, Energy & Minerals (GEM) Science Center
  • USGS Data Release Products



Please see attached metadata record for full dataset provenance.

Additional Information


Type Scheme Key
DOI doi:10.5066/P975KILE

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