Early Paleozoic rifting and reactivation of a passive-margin rift: Insights from detrital zircon provenance signatures of the Potsdam Group, Ottawa graben: Comment

TitleEarly Paleozoic rifting and reactivation of a passive-margin rift: Insights from detrital zircon provenance signatures of the Potsdam Group, Ottawa graben: Comment
Publication TypeJournal Article
Year of Publication2019
AuthorsLanding, E, Hersi, OSalad, Amati, L, Westrop, SR, Franzi, DA
JournalGSA Bulletin
Volume2019
Date PublishedJan-25-2019
ISSN0016-7606
Abstract

This comment outlines fundamental problems in Lowe et al.’s synthesis (2018) of the early Paleozoic stratigraphic architecture of the eastern Ottawa-Bonnechere aulacogen that preclude an accurate analysis of the region’s geological and depositional history and even an adequate stratigraphic provenance of the detrital zircons that they analyze. These problems include: inaccurate lithostratigraphic and contradictory biostratigraphic correlations that have also led to extension of the Potsdam “Group” into the Lower Ordovician; a proposed allostratigraphy that contradicts itself when tested with existing litho- and biostratigraphic data; redefinitions of earlier defined lithostratigraphic units that lead to confusion on close reading; and errors in interpreted depositional environments and lithostratigraphic contacts.

URLhttps://pubs.geoscienceworld.org/gsa/gsabulletin/article/568494/Early-Paleozoic-rifting-and-reactivation-of-a
DOI10.1130/B35104.1