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1. Parallel folding can be operated for two times with the buckle plate. Its mode of folding includes parallel fold, concertina fold and letter fold.
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2. Parallel folding can be operated for two times with the buckle plates. Its mode of folding includes parallel fold, concertina fold and letter fold.
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3. Parallel folding can be operated for two times with the buckle plate. Its mode of folding includes parallel fold, concertina fold and letter fold.
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4. If both limbs of overturned fold have same dip angle , we call this special overturned fold isoclinal fold.
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5. In the inner part of the rock, we found that stratigraphic gap and inversion, and the fold-shapes show a series of pitching fold, appressed homoclinal fold and recumbent.
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