Goodwin, Peter W.2023-05-232023-05-231981http://hdl.handle.net/20.500.12613/8622Accompanied by one .pdf file: 1) Lee-Supplemental-1981.pdfApplication of the PAC hypothesis to the Olney and Elmwood Members of the Manlius Formation in central New York supports the general hypothesis that this portion of the Helderberg Group accumulated episodically. This limited stratigraphic interval consists of small-scale upward­ shallowing cycles (PACs) which strongly resemble well­documented ancient and Recent upward-shallowing tidal cycles. PACs of the Olney and Elmwood Members constitute a shallowing PAC sequence which developed as a result of eastward prograd­ation of tidal facies. Within this shallowing PAC sequence, paleoenvironments and paleogeography evolved episodically in response to widespread punctuation events at PAC boundaries. Within each PAC of the sequence, paleoenvironments developed gradually as a result of sedimentary aggradation; between PACs paleogeographic patterns were abruptly altered by punctuation events.45 pagesengIN COPYRIGHT- This Rights Statement can be used for an Item that is in copyright. Using this statement implies that the organization making this Item available has determined that the Item is in copyright and either is the rights-holder, has obtained permission from the rights-holder(s) to make their Work(s) available, or makes the Item available under an exception or limitation to copyright (including Fair Use) that entitles it to make the Item available.http://rightsstatements.org/vocab/InC/1.0/GeologyEnvironmental scienceGeoscienceImage