SCIRP Mobile Website
Paper Submission

Why Us? >>

  • - Open Access
  • - Peer-reviewed
  • - Rapid publication
  • - Lifetime hosting
  • - Free indexing service
  • - Free promotion service
  • - More citations
  • - Search engine friendly

Free SCIRP Newsletters>>

Add your e-mail address to receive free newsletters from SCIRP.


Contact Us >>

Article citations


G. D. Robinson, M. R. Klepper and J. D. Obradovich, “Overlapping Plutonism, Volcanism and Tectonism in the Boulder Batholith Region, Western Montana,” Geological Society of America Memoir, Vol. 116, 1968, pp. 557-576.

has been cited by the following article:

  • TITLE: Timing of Onset of Volcanic Centers in the Campanian of Western North America as Determined by Distal Ashfalls

    AUTHORS: Janet L. Bertog

    KEYWORDS: Pierre Shale; Niobrara Formation; Volcanism; Forearc; Campanian

    JOURNAL NAME: Open Journal of Geology, Vol.3 No.2, April 30, 2013

    ABSTRACT: Strata of the Late Cretaceous Niobrara Formation and Pierre Shale Group include bentonites that provide a distal record of volcanic activity taking place to the west. Detailed stratigraphic analysis combined with mineralogy and geochemistry of the bentonites indicates the following timing of events: 1) Eustatic sea level fall as a result of the end of the Niobrara Cycle; 2) Tectonic deformation of the Western Interior Seaway coincident with tectonism on the Absoroka Thrust in Wyoming and Late Canyon Range Thrust in Utah; 3) Backarc volcanism in Montana associated with the Little Elkhorn Mountain volcanic complex; 4) Forearc volcanism in the Cascades area indicates subduction of a hot oceanic crust where plagioclase in the oceanic crust is being incorporated into the melt; 5) Cessation of tectonic activity results in a return of sedimentation patterns to north-south trending belts with the Boyer Bay and Burning Brule members of the Sharon Springs Formation deposited to the east and the Mitten Black Shale Formation deposited in the basin.