Palaeomagnetism of coastal California and Baja California

alternatives to large-scale northward transport

R. F. Butler, W. R. Dickinson, George E Gehrels

Research output: Contribution to journalArticle

55 Citations (Scopus)

Abstract

Paleomagnetic data from the Santa Lucia-Orocopia (SLOA) and Baja-Borderland (BBA) allochthons of coastal California and Baja California have been interpreted to indicate up to 2500 km of post-mid-Cretaceous northward transport of these regions with respect to interior North America. However, with Neogene strike-slip offsets taken into account, geological interpretations correlate basement rocks of the coastal allochthons with continental basement rocks directly across the San Andreas and related fault systems. We have examined paleomagnetic data from SLOA and BBA and conclude that apparent discordances can be explained without large-scale pre-Neogene tectonic transport. Coupled with recent documentations of compaction shallowing of paleomagnetic inclination in other marine sedimentary rocks, inconsistencies suggest that paleolatitudes derived from most of the marine sedimentary rocks of SLOA and BBA are biased towards low paleolatitudes by compaction shallowing. -from Authors

Original languageEnglish (US)
Pages (from-to)561-576
Number of pages16
JournalTectonics
Volume10
Issue number3
StatePublished - 1991
Externally publishedYes

Fingerprint

Lower California (Mexico)
Sedimentary rocks
paleolatitude
sedimentary rocks
paleomagnetism
basement rock
basements
Neogene
sedimentary rock
compaction
Compaction
Rocks
rocks
documentation
Tectonics
inclination
tectonics
slip
Cretaceous
North America

ASJC Scopus subject areas

  • Geochemistry and Petrology
  • Geophysics

Cite this

Palaeomagnetism of coastal California and Baja California : alternatives to large-scale northward transport. / Butler, R. F.; Dickinson, W. R.; Gehrels, George E.

In: Tectonics, Vol. 10, No. 3, 1991, p. 561-576.

Research output: Contribution to journalArticle

@article{a96e2f6e8e7f4e76b6675cce8d606dba,
title = "Palaeomagnetism of coastal California and Baja California: alternatives to large-scale northward transport",
abstract = "Paleomagnetic data from the Santa Lucia-Orocopia (SLOA) and Baja-Borderland (BBA) allochthons of coastal California and Baja California have been interpreted to indicate up to 2500 km of post-mid-Cretaceous northward transport of these regions with respect to interior North America. However, with Neogene strike-slip offsets taken into account, geological interpretations correlate basement rocks of the coastal allochthons with continental basement rocks directly across the San Andreas and related fault systems. We have examined paleomagnetic data from SLOA and BBA and conclude that apparent discordances can be explained without large-scale pre-Neogene tectonic transport. Coupled with recent documentations of compaction shallowing of paleomagnetic inclination in other marine sedimentary rocks, inconsistencies suggest that paleolatitudes derived from most of the marine sedimentary rocks of SLOA and BBA are biased towards low paleolatitudes by compaction shallowing. -from Authors",
author = "Butler, {R. F.} and Dickinson, {W. R.} and Gehrels, {George E}",
year = "1991",
language = "English (US)",
volume = "10",
pages = "561--576",
journal = "Tectonics",
issn = "0278-7407",
publisher = "American Geophysical Union",
number = "3",

}

TY - JOUR

T1 - Palaeomagnetism of coastal California and Baja California

T2 - alternatives to large-scale northward transport

AU - Butler, R. F.

AU - Dickinson, W. R.

AU - Gehrels, George E

PY - 1991

Y1 - 1991

N2 - Paleomagnetic data from the Santa Lucia-Orocopia (SLOA) and Baja-Borderland (BBA) allochthons of coastal California and Baja California have been interpreted to indicate up to 2500 km of post-mid-Cretaceous northward transport of these regions with respect to interior North America. However, with Neogene strike-slip offsets taken into account, geological interpretations correlate basement rocks of the coastal allochthons with continental basement rocks directly across the San Andreas and related fault systems. We have examined paleomagnetic data from SLOA and BBA and conclude that apparent discordances can be explained without large-scale pre-Neogene tectonic transport. Coupled with recent documentations of compaction shallowing of paleomagnetic inclination in other marine sedimentary rocks, inconsistencies suggest that paleolatitudes derived from most of the marine sedimentary rocks of SLOA and BBA are biased towards low paleolatitudes by compaction shallowing. -from Authors

AB - Paleomagnetic data from the Santa Lucia-Orocopia (SLOA) and Baja-Borderland (BBA) allochthons of coastal California and Baja California have been interpreted to indicate up to 2500 km of post-mid-Cretaceous northward transport of these regions with respect to interior North America. However, with Neogene strike-slip offsets taken into account, geological interpretations correlate basement rocks of the coastal allochthons with continental basement rocks directly across the San Andreas and related fault systems. We have examined paleomagnetic data from SLOA and BBA and conclude that apparent discordances can be explained without large-scale pre-Neogene tectonic transport. Coupled with recent documentations of compaction shallowing of paleomagnetic inclination in other marine sedimentary rocks, inconsistencies suggest that paleolatitudes derived from most of the marine sedimentary rocks of SLOA and BBA are biased towards low paleolatitudes by compaction shallowing. -from Authors

UR - http://www.scopus.com/inward/record.url?scp=0026301093&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=0026301093&partnerID=8YFLogxK

M3 - Article

VL - 10

SP - 561

EP - 576

JO - Tectonics

JF - Tectonics

SN - 0278-7407

IS - 3

ER -