Skip to Main Content
Skip Nav Destination
GEOREF RECORD

Magnetostratigraphic tests of sequence stratigraphic correlations from the Southern California Paleogene

Donald R. Prothero
Magnetostratigraphic tests of sequence stratigraphic correlations from the Southern California Paleogene
Journal of Sedimentary Research (July 2001) 71 (4): 526-536

Abstract

Several sequence stratigraphic analyses have been conducted on the Eocene-Oligocene rocks of the San Diego region and of the western Transverse Ranges in southern California. Recently developed magnetic stratigraphy and (super 40) Ar/ (super 39) Ar dates, as well as previously neglected biostratigraphic data, provide a high-resolution chrono-stratigraphic framework to test correlation of these sequence stratigraphic interpretations to the global onlap-offlap chart (Haq et al. 1987, 1988; Hardenbol et al. 1998). In the San Diego area, previous stratigraphic analyses miscorrelated nearly all sequences and sequence boundaries to the global time scale; some correlations are off by as much as ten million years. In the western Transverse Ranges, three contradictory sequence stratigraphic analyses are evaluated. The revised dates of the sequence boundaries show poor correlation with the onlap-offlap chart of Haq et al. (1987, 1988) or Hardenbol et al. (1998), and some units are misdated by as much as six million years. In both regions, few sequences were correctly predicted by the onlap-offlap chart, suggesting that tectonic controls were more important than eustatic controls in this tectonically active region. The errors in so many sequence stratigraphic correlations when tested by high-resolution chronostratigraphic data should caution geologists about using sequence stratigraphic age assignments uncritically. Sequence stratigraphic correlations are only as good as the chronostratigraphy on which they are based.


ISSN: 1527-1404
EISSN: 1938-3681
Serial Title: Journal of Sedimentary Research
Serial Volume: 71
Serial Issue: 4
Title: Magnetostratigraphic tests of sequence stratigraphic correlations from the Southern California Paleogene
Author(s): Prothero, Donald R.
Affiliation: Occidental College, Department of Geology, Los Angeles, CA, United States
Pages: 526-536
Published: 200107
Text Language: English
Publisher: Society of Economic Paleontologists and Mineralogists, Tulsa, OK, United States
References: 101
Accession Number: 2001-065557
Categories: Stratigraphy
Document Type: Serial
Bibliographic Level: Analytic
Illustration Description: illus. incl. sects., geol. sketch map
N32°45'00" - N32°45'00", W117°10'00" - W117°10'00"
Country of Publication: United States
Secondary Affiliation: GeoRef, Copyright 2018, American Geosciences Institute. Reference includes data supplied by SEPM (Society for Sedimentary Geology), Tulsa, OK, United States
Update Code: 200120
Close Modal

or Create an Account

Close Modal
Close Modal