地殻断裂帯の定量モデル : 理論的予想

スポンサーリンク

概要

• 論文の詳細を見る

• Crustal shear zones are believed to have formed at deeper levels under high ductile, high PT, conditions.Subsequent rise of the shear zone rocks up to the surface, involves a series of deformational and metamorphic processes which leave their effects/imprints in the form of new structures, textures, fabric, and the related petrographic, mineralogical and geochemical features, all of which can be observed and measured.All these elements can be restructured or reorganized to develop quantitative models.Depending upon the type of available data, only one or some specific models for a shear zone can be developed.A mathematical model can be developed when the measurable variables(or the controlling factors)of a shear zone can be approximated by some limited range.A mathematical model can be made more realistic if some random components of the shear zone(or the system)-e.g.vertical uplift, rise or fall of temperature, etc -can be considered.This gives rise to a stochastic model for a shear zone.If the present-day tectonic set-up of a shear zone can be considered in terms of the sum total of a few structural processes(as outlined in the paper)together with one or two random components(outlined in the paper)operative in the system, a stochastic process model can be developed for the shear zone.A process-response model can be developed when the structural/tectonic factors that constitute the "causes" -i.e.process elements -and those consituting the "effects" -i.e.response elements -for a shear zone are known.A shear zone may take up a linear model when all the associated structural data that have given rise to the development of the shear zone are directly observable and measurable in field sections, such that the observational data yield a certain linear relation of the typey=a+bx.The method of developing a quantitative model for a shear zone has been demonstrated in the paper by taking the actual situation of a shear zone.

• 1998-12-25

著者

• A R.bhattacharya

  Department Of Geology University Of Lucknow

• Bhattacharya A.r.

  Department Of Geologu University Of Lucknow

関連論文

• 地殻断裂帯の定量モデル : 理論的予想
• CONTROL OF DUCTILE STRAIN AND RHEOLOGY ON THE GEOMETRY OF NATURAL FOLDS : A MATHEMATICAL PERSPECTIVE

スポンサーリンク