Tectonic, foreland-basin origins of Upper Ordovician black gas shales in the Appalachian Basin of eastern United States

Frank R. Ettensohn, Gustavo Martins

Research output: Contribution to journalArticlepeer-review

Abstract

Black gas shales are major parts of many foreland-basin sequences and comprise important components of unconformity-bound tectophase cycles, which reflect sedimentary/stratigraphic, flexural responses to deformational loading and relaxation in an orogen. Using as examples Upper Ordovician black gas shales, deposited during the Taconian orogeny in the Appalachian Basin of the eastern United States, black-shale origins and their importance in understanding the tectonic framework are discussed. Foreland-basin black shales are clearly the product of distinctive tectonic frameworks and histories, and aside from economic value, may provide important controls on the timing and location of tectonic events.

Original languageEnglish
Pages (from-to)30-33
Number of pages4
JournalEstonian Journal of Earth Sciences
Volume72
Issue number1
DOIs
StatePublished - 2023

Bibliographical note

Publisher Copyright:
© 2023, Estonian Academy Publishers. All rights reserved.

Keywords

  • Appalachian Basin
  • Taconian orogeny
  • Upper Ordovician
  • black gas shales
  • tectonic framework
  • tectophase cycles

ASJC Scopus subject areas

  • Water Science and Technology
  • General Earth and Planetary Sciences

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