Model for the tectonic evolution of the Mississippi embayment and its contemporary seismicity

Kane, Martin; Hildenbrand, Thomas G.; Hendricks, J.D.

doi:10.1130/0091-7613(1981)9<563:mftteo>2.0.co;2

Cited by 68 publications

(28 citation statements)

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“…)/ Pliocene gravels and Quaternary fluvial and aeolian deposits. Most researchers have attributed the formation of the embayment to the opening of the Gulf of Mexico and reactivation of the underlying Reelfoot rift (Burke and Dewey, 1973;Ervin and McGinnis, 1975;Kane et al, 1981;Braile et al, 1982), and others to possible hotspot activity (Cox and Van Arsdale, 1997). The temporal similarities between the Mississippi embayment and the Laramide orogeny suggest that there may have been additional far-field tectonic stresses involved in formation of the embayment.…”

Section: Southern Tectonic Domainmentioning

confidence: 94%

Tectonic Framework of the Southwestern Margin of the Illinois Basin and Its Influence on Neotectonism and Seismicity

Harrison

Schultz

2002

Seismological Research Letters

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Section: Southern Tectonic Domainmentioning

confidence: 94%

Tectonic Framework of the Southwestern Margin of the Illinois Basin and Its Influence on Neotectonism and Seismicity

Harrison

Schultz

2002

Seismological Research Letters

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“…Indeed, most previous observations ofthermodynamically stable vesicles also involved surfactant mixtures (2)(3)(4) or systems with mixed counterions (5). We present a continuum, theoretical model based on curvature energy concepts (6) for the equilibrium formation of vesicles with a preferred radius in mixed surfactant systems.…”

Section: R M Hamilton and W D Mooneymentioning

confidence: 97%

Seismic-Wave Attenuation Associated with Crustal Faults in the New Madrid Seismic Zone

Hamilton¹,

Mooney²

1990

Science

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The attenuation of upper crustal seismic waves that are refracted with a velocity of about 6 kilometers per second varies greatly among profiles in the area of the New Madrid seismic zone in the central Mississippi Valley. The waves that have the strongest attenuation pass through the seismic trend along the axis of the Reelfoot rift in the area of the Blytheville arch. Defocusing of the waves in a low-velocity zone and/or seismic scattering and absorption could cause the attenuation; these effects are most likely associated with the highly deformed rocks along the arch. Consequently, strong seismic-wave attenuation may be a useful criterion for identifying seismogenic fault zones.

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“…This seismic activ ity is commonly associated with major rift basins underlying the embayment (e.g., Braile, 1989;Braile et al, 1986;Hildenbrand, 1985;Mooney et al, 1983;Kane et al, 1981; Reelfoot rift in Figs. 2,5, and 7).…”

Section: Origin and Significance O F The Nd Model Age Boundarymentioning

confidence: 99%

Proterozoic geology of the east-central Midcontinent basement

Schmus¹,

Bickford²,

Turek³

1996

Basement and Basins of Eastern North America

123

149

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The Precambrian basement beneath much of Illinois, Michigan, southwestern Ontario, Indiana, western Ohio, western Kentucky, and southeastern Missouri (including exposures in the S t Francois Mountains) is known as the eastern granite-rhyolite prov ince. This crust is characterized by undeformed and mostly unmetamorphosed highsilica rhyolite to dacite with epizonal granite of equivalent composition having zircon UPb ages of 1,470 ± 30 Ma. The Precambrian subcrop beneath parts of southwestern Mis souri, southern Kansas, northern Arkansas, most of Oklahoma (including small areas of outcrop), and the panhandle of Texas is known as the southern granite-rhyolite province. This crust is also characterized by undeformed and mostly unmetamorphosed high-silica rhyolite to dacite with epizonal granite, but zircon U-Pb ages from this province are about 100 m.y. younger, 1,370 ± 30 Ma. We have obtained additional zircon U-Pb ages and whole-rock Sm-Nd data for many drill-hole samples and a few outcrop samples from these provinces to (1) define their geographic limits more accurately, and (2) use them as a means of defining the age of the crust which presumably underlies these two provinces and from which the granite and rhyolite magmas were derived.These granite-rhyolite provinces were previously thought to have formed from anatectic melting of preexisting Paleoproterozoic crust, which is a southward and eastward extension of the 1,600 to 1,800 Ma Central Plains orogen. However, recent Sm-Nd stud ies, including additional data reported here, indicate that some of the rhyolite and gran ite from both the eastern granite-rhyolite province and the southern granite-rhyolite province have Nd crustal residence ages indicating magma derivation from juvenile, mantle-derived sources that are only slightly older than the granites and rhyolites them selves. As a result, a relatively sharp boundary can be defined that separates Mesoproterozoic granites and rhyolites (regardless of age) having Nd crustal residence ages indicative of Paleoproterozoic crustal sources (TDM > 1,550 Ma) from ones having younger crustal sources (TDM < 1,550 Ma). This boundary extends northeasterly from southeastern Oklahoma through southeastern Missouri, southern Illinois, central Indi ana, southeastern Michigan, and into southwestern Ontario; its southwestern extension is not defined, but it probably parallels, and may be close to, the northwestern boundary of the Llano province in Texas. The underlying crust northwest of boundary line is inferred to be Paleoproterozoic, whereas the underlying crust southeast of this bound- Van Schmus, W. R., Bickford, M. E., and Turek, A., 1996, Proterozoic geology of the east-central Midcontinent basement, in van der Pluijm, B. A., and Catacosinos, P. A., eds., Basement and Basins of Eastern North America: Boulder, Colorado, Geological Society of America Special Paper 308. 7 on May 15, 2015 specialpapers.gsapubs.org Downloaded from 8 W. R. Van Schmus and Othersary is inferred to be Mesoproterozoic. We interpret this boundary ...

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Model for the tectonic evolution of the Mississippi embayment and its contemporary seismicity

Cited by 68 publications

References 0 publications

Tectonic Framework of the Southwestern Margin of the Illinois Basin and Its Influence on Neotectonism and Seismicity

Tectonic Framework of the Southwestern Margin of the Illinois Basin and Its Influence on Neotectonism and Seismicity

Seismic-Wave Attenuation Associated with Crustal Faults in the New Madrid Seismic Zone

Proterozoic geology of the east-central Midcontinent basement

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