Crustal structure of eastern Nevada from COCORP deep seismic reflection data

Hauser, Ernest C.; Potter, C. J.; Hauge, Thomas A.; Burgess, S. E. P.; Burtch, S.; Mutschler, J.; Allmendinger, Richard W.; Brown, L. D.; Kaufman, S.; Oliver, Jack

doi:10.1130/0016-7606(1987)99<833:csoenf>2.0.co;2

Cited by 91 publications

(55 citation statements)

References 0 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Upper unit (Early Proterozoic and Late Archaean) exhibit an old ductile fabric inherited from Palaeoproterozoic orogens (An, 1990;Lü and Kong, 1993;Zhang et al, 1994) and cannot be related to LDF. Referring to previous works (Makris, 1978;Davis and Coney, 1979;Crittenden et al, 1980;Allmendinger et al, 1987;Hauser et al, 1987;Lister and Davis, 1989;Malavieille, 1993), results from this study allow us to interpret the Linglong dome as a Metamorphic Core Complex, an asymmetric one in that case as only one ductile detachment (LDF) developed along its eastern flank (Fig. 9a).…”

Section: Sitementioning

confidence: 81%

Metamorphic Core Complexes vs. synkinematic plutons in continental extension setting: Insights from key structures (Shandong Province, eastern China)

Charles

Gumiaux

Augier

et al. 2011

Journal of Asian Earth Sciences

141

View full text Add to dashboard Cite

a b s t r a c tContinental extension is an important geodynamical process mostly diagnostic of a peculiar behaviour of the crust accommodated by geological structures that highlight these specific conditions in the crust. Though a Metamorphic Core Complex (MCC) reveals a much stronger crustal extension than a synkinematic pluton, the nature of those two structures implies different implications in terms of crustal extension mechanisms and geodynamic significations. In eastern Asia, a major continental extensional event occurred during Mesozoic and early Cenozoic times. The resulting various extensional events described in previous studies consist in large intracontinental basins, important volcanism, emplacement of plutons in the upper crust and exhumation of MCCs. An efficient description of MCCs and plutons in eastern Asia is essential to discriminate important differences of those two structures in terms of strain amount undergone by continental crust and geodynamic significations. In that way, an integrated structural and geophysical study has been realized to precisely discriminate the structure in the Jiaodong Peninsula (Shandong Province, eastern China), previously regarded as simple sheared plutons. A succession of three main stages have been identified all pertaining to a NW-SE extensional setting: (1) the exhumation of the Late Jurassic-Early Cretaceous Linglong MCC below the SE-dipping Linglong detachment fault, (2) the emplacement of the Guojialing syntectonic pluton below the N-dipping extensional Guojialing intracrustal shear zone (130-124 Ma) and (3) a penetrative brittle normal faulting associated with gold mineralizations ($120 Ma). As a result, the maximum amount of extension in Jiaodong Peninsula, characterized by partially-melted lower to middle crust upward into the Linglong MCC should be revised to Late Jurassic-Early Cretaceous period.

show abstract

Section: Sitementioning

confidence: 81%

Metamorphic Core Complexes vs. synkinematic plutons in continental extension setting: Insights from key structures (Shandong Province, eastern China)

Charles

Gumiaux

Augier

et al. 2011

Journal of Asian Earth Sciences

141

View full text Add to dashboard Cite

show abstract

“…In some cases, the Moho appears as a clear, sharp, and continuous reflector (e.g. Hauser et al,1987a;Cook et al,1992), while in other cases it is imaged as a diffuse and discontinuous sequences of reflectors, or may even be completely absent (e.g. Brown et al,1986;Hauser et al, 1987b;Hall e al., 1990).…”

Section: Structural Geometry Of the Reflection Mohomentioning

confidence: 97%

Crustal structure and Moho geometry of the northeastern Tibetan plateau as revealed by SinoProbe-02 deep seismic-reflection profiling

et al. 2014

View full text Add to dashboard Cite

“…It was also pointed out that the well-developed Moho reflections generally correspond to a location where important Cenozoic detachments and steeper normal faults of opposite vergence focus extensional displacement deeply in the crust, likely indicating that the prominent Moho represents a basal-crust zone of decoupling for extension and westward translation of the BRP crust relative to the Colorado Plateau (Hauser et al, 1987a). The 3-km normal Moho offset found at the transition between the BRP and the Colorado Plateau in…”

Section: Accepted Manuscriptmentioning

confidence: 99%

Crustal versus mantle core complexes

et al. 2018

View full text Add to dashboard Cite

This is a PDF file of an unedited manuscript that has been accepted for publication. As a service to our customers we are providing this early version of the manuscript. The manuscript will undergo copyediting, typesetting, and review of the resulting proof before it is published in its final form. Please note that during the production process errors may be discovered which could affect the content, and all legal disclaimers that apply to the journal pertain. Contrary to what is commonly believed, it is argued from analogue and numerical models that detachments that accommodate exhumation of core complexes do not initiate at the onset of extension but in the course of progressive extension when the exhuming ductile crust reaches the surface. In models, convex upward detachments result from a rolling hinge process. A C C E P T E D M A N U S C R I P TMantle core complexes develop in either the oceanic lithosphere, at slow and ultra-slow spreading ridges, or in continental lithospheres, whose initial Moho temperature is lower than 750°C, with "sub-Moho mantle-dominated" strength profiles. It is argued that the mechanism of mantle exhumation at passive margins is a nearly symmetrical necking process at ACCEPTED MANUSCRIPTA C C E P T E D M A N U S C R I P T 2 lithosphere scale without major and permanent detachment, except if strong strain localization could occur in the lithosphere mantle. Distributed crustal extension, by upper crust faulting above a décollement along the ductile crust increases toward the rift axis up to crustal breakup.Mantle rocks exhume in the zone of crustal breakup accommodated by conjugate mantle shear zones that migrate with the rift axis, during increasing extension.

show abstract

Crustal structure of eastern Nevada from COCORP deep seismic reflection data

Cited by 91 publications

References 0 publications

Metamorphic Core Complexes vs. synkinematic plutons in continental extension setting: Insights from key structures (Shandong Province, eastern China)

Metamorphic Core Complexes vs. synkinematic plutons in continental extension setting: Insights from key structures (Shandong Province, eastern China)

Crustal structure and Moho geometry of the northeastern Tibetan plateau as revealed by SinoProbe-02 deep seismic-reflection profiling

Crustal versus mantle core complexes

Contact Info

Product

Resources

About