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Gurmeet Singh posted an Question
December 20, 2020 • 04:55 am 30 points
  • IIT JAM
  • Geology (GG)

Confusion in option c & d

. If fold axis of a fold assumes near perpendicu- lar relationship with axial trace of the fold, then the fold is interpreted as a: A. Vertical fold B. Recumbent fold C. Reclined fold D. Horizontal fold

2 Answer(s) Answer Now
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  • comment-profile-img>
    Sajan sarthak

    why did not you marked this yet....You ask so many questions and we discuss unless you understand...still you are not marking ...

  • comment-profile-img>
    Sajan sarthak

    no no the axial trace means the axial plane trace and fold axis.

  • comment-profile-img>
    Rahul kumar

    No, don't confuse with the plunge/dip amount and plunge/dip direction. Direction and amount is independent of each other. Obviously, the Plunge amount of fold axis and dip amount of axial plane is equal in case of reclined fold but the main reason behind the answer of this question is the direction. The strike direction of fold Axial plane and Plunge direction of fold axis is perpendicular to each other in case of reclined fold. That's why the answer for this question should be reclined fold.

    eduncle-logo-app

    then it will become the vertical fold in tilted direction.

  • Gurmeet singh

    but reclined fold is that in which plunging is equal to axial plane dipping...e.g both can be 60° each...is this way we are saying when plunging is 45 and axial plane is 45° dipping... both will make 90 to each other?

  • comment-profile-img>
    Rahul kumar best-answer

    Answer (C) Reclined fold For horizontal fold, the axial trace (intersection of axial Plane with ground) and fold axis will be parallel. For reclined fold, the axial trace of the fold and fold axis will be perpendicular to each other because in reclined fold the axial Plane dip in the same direction as of fold axis Plunge i.e. Strike of fold axial Plane will be perpendicular to the fold axis direction.

  • comment-profile-img>
    Sajan sarthak Best Answer

    It's a reclined fold

    cropped611493937862550730.jpg
    eduncle-logo-app

    this seems to be titled vertical fold.

    eduncle-logo-app

    no it's a reclined fold

    eduncle-logo-app

    As defined by M. J. Fleuty (1964), a dipping neutral fold in which the axial plane dips between 10° and 80° and the pitch of the hinge line on the axial plane is more than 80°

    eduncle-logo-app

    3 dimensionally I have shown

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