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Mid-Cretaceous to Paleocene North American drainage reorganization from detrital zircons

M. Blum and M. Pecha
Mid-Cretaceous to Paleocene North American drainage reorganization from detrital zircons
Geology (Boulder) (June 2014) 42 (7): 607-610

Abstract

Detrital zircons (DZ) from fluvial sandstones of the Western Canada Sedimentary Basinand the U.S. Gulf of Mexico (GoM) passive margin indicate mid-Cretaceous through Paleocenecontinental-scale drainage reorganization. DZ populations from the Early CretaceousMannville Group of Alberta represent a continental-scale system that routed sediment from the Appalachian Mountains and the eastern three-quarters of North America to the Boreal Sea. In contrast, DZ populations from the GoM coastal plain show that only the southern United States and Appalachian-Ouachita orogen contributed sediment to the GoM through the Late Cretaceous, whereas by the Paleocene, southern North America, from the Western Cordillera to the Appalachian Mountains, had been routed to the GoM. This continental-scale drainage reorganization reflects the culmination of an approximately 300 m.y. trajectory that began with Paleozoic Appalachian assembly, and broad east to west sediment routing, followed by assembly of the Mesozoic Western Cordillera, which resulted in west-derived rivers in the United States draining to the GoM in Texas, or to an ancestral Mississippi River in the Mississippi embayment, setting up the template for sediment routing that persists today.


ISSN: 0091-7613
EISSN: 1943-2682
Coden: GLGYBA
Serial Title: Geology (Boulder)
Serial Volume: 42
Serial Issue: 7
Title: Mid-Cretaceous to Paleocene North American drainage reorganization from detrital zircons
Author(s): Blum, M.Pecha, M.
Affiliation: ExxonMobil Upstream Research, Houston, TX, United States
Pages: 607-610
Published: 20140602
Text Language: English
Publisher: Geological Society of America (GSA), Boulder, CO, United States
References: 36
Accession Number: 2015-003955
Categories: StratigraphyGeochronology
Document Type: Serial
Bibliographic Level: Analytic
Illustration Description: illus. incl. geol. sketch maps
N42°00'00" - N84°00'00", W141°00'00" - W52°00'00"
Secondary Affiliation: University of Arizona, USA, United States
Country of Publication: United States
Secondary Affiliation: GeoRef, Copyright 2022, American Geosciences Institute. Reference includes data from GeoScienceWorld, Alexandria, VA, United States. Reference includes data supplied by the Geological Society of America, Boulder, CO, United States
Update Code: 201503
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