Portal de Periódicos da CAPES

Formation of sequences in the cratonic interior of North America by interaction between mantle, eustatic, and stratigraphic processes

1997; Geological Society of America; Volume: 109; Issue: 12 Linguagem: Inglês

10.1130/0016-7606(1997)109 2.3.co;2

1943-2674

Peter Burgess, Michael Gurnis, Louis Moresi,

earthquake and tectonic studies

Research Article| December 01, 1997 Formation of sequences in the cratonic interior of North America by interaction between mantle, eustatic, and stratigraphic processes Peter M. Burgess; Peter M. Burgess 1Seismological Laboratory, California Institute of Technology, Pasadena, California 91125 Search for other works by this author on: GSW Google Scholar Michael Gurnis; Michael Gurnis 1Seismological Laboratory, California Institute of Technology, Pasadena, California 91125 Search for other works by this author on: GSW Google Scholar Louis Moresi Louis Moresi 1Seismological Laboratory, California Institute of Technology, Pasadena, California 91125 Search for other works by this author on: GSW Google Scholar Author and Article Information Peter M. Burgess 1Seismological Laboratory, California Institute of Technology, Pasadena, California 91125 Michael Gurnis 1Seismological Laboratory, California Institute of Technology, Pasadena, California 91125 Louis Moresi 1Seismological Laboratory, California Institute of Technology, Pasadena, California 91125 Publisher: Geological Society of America First Online: 01 Jun 2017 Online ISSN: 1943-2674 Print ISSN: 0016-7606 Geological Society of America GSA Bulletin (1997) 109 (12): 1515–1535. https://doi.org/10.1130/0016-7606(1997)109 2.3.CO;2 Article history First Online: 01 Jun 2017 Cite View This Citation Add to Citation Manager Share Icon Share Facebook Twitter LinkedIn MailTo Tools Icon Tools Get Permissions Search Site Citation Peter M. Burgess, Michael Gurnis, Louis Moresi; Formation of sequences in the cratonic interior of North America by interaction between mantle, eustatic, and stratigraphic processes. GSA Bulletin 1997;; 109 (12): 1515–1535. doi: https://doi.org/10.1130/0016-7606(1997)109 2.3.CO;2 Download citation file: Ris (Zotero) Refmanager EasyBib Bookends Mendeley Papers EndNote RefWorks BibTex toolbar search Search Dropdown Menu toolbar search search input Search input auto suggest filter your search All ContentBy SocietyGSA Bulletin Search Advanced Search Abstract Models integrating geodynamic and stratigraphic processes show that some gross features of Phanerozoic North American cratonic strata can be explained with dynamic topographies generated by subduction and cycles of supercontinent aggregation and dispersal. A three-dimensional finite-element model is used to calculate mantle flow beneath North America during Phanerozoic time in response to episodes of subduction at cratonic margins and two cycles of supercontinent formation and breakup. Dynamic topographies calculated by the flow models are used as input to a stratigraphic model that also includes background subsidence, eustasy, denudation, clastic and carbonate deposition, compaction, and isostasy. These models successfully reproduce aspects of the Sloss sequences; the best matches were obtained by combining two wavelengths of dynamic topography with second-order eustasy. Long-wavelength dynamic topography generates first-order stratal cyclicity. Periods of erosion were shorter when North America was over a dynamic topography low than when it was over a high. Long-wavelength dynamic topography also explains the absence of Mesozoic strata on the eastern portion of the craton. Characteristic stratal patterns are shown to result from subduction-related dynamic topography, although sensitive to sediment supply and other subsidence mechanisms. Aspects of Upper Cretaceous stratal patterns may be explained by the effects of Farallon plate subduction. Generally, strata deposited in a dynamic topography depression have low preservation potential because the topography is reversible. Thus, ancient subduction-related dynamic topography is most likely to be represented by unconformities. This content is PDF only. Please click on the PDF icon to access. First Page Preview Close Modal You do not have access to this content, please speak to your institutional administrator if you feel you should have access.