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Anisotropy in the flexural response of the Indian Shield
, Yudhvir Singh, Deshraj Trivedi, Suresh Ch. Kandpal
Published in Elsevier
2012
Volume: 532-535
   
Pages: 193 - 204
Abstract
We seek to determine the strain field which has accumulated in the Indian Shield due to the continental drift of Gondwanaland. We have used a method which involves the calculation of the 2D isostatic coherence response function between Bouguer gravity and topography as a function of azimuth by way of multispectrogram analysis. The average coherence is maximum consistently in the Indian Shield in a direction, which is at an angle of 45° to the major trend of suture zones within the shield, a result which is in good agreement with the strain inferred from absolute plate motion (APM) in a hot spot reference frame. This directionality of mechanical plate weakness suggests that all paleostress fields were erased due to the movement of the Indian plate during the Himalayan orogeny. © 2012 Elsevier B.V.
About the journal
JournalData powered by TypesetTectonophysics
PublisherData powered by TypesetElsevier
Open AccessNo
Concepts (37)
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    ABSOLUTE PLATE MOTIONS
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    BOUGUER GRAVITY
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    CONTINENTAL DRIFT
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    ELASTIC THICKNESS
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    Flexural response
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    HERMITE
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    Hot spot
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    Indian plate
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    INDIAN SHIELDS
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    ISOSTATIC COHERENCE
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    MECHANICAL ANISOTROPY
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    PALEO-STRESS
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    Reference frame
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    RESPONSE FUNCTIONS
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    Strain fields
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    GEOPHYSICS
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    Physics
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    Strength of materials
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    Anisotropy
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    Azimuth
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    BOUGUER ANOMALY
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    CONTINENTAL DRIFT
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    Deformation mechanism
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    Flexure
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    Gondwana
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    HIMALAYAN OROGENY
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    Isostasy
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    Paleostress
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    Plate motion
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    Plate tectonics
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    Strain rate
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    Stress field
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    SUTURE ZONE
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    Topographic effect
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    Trend analysis
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    Two-dimensional modeling
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    Indian shield