- journal_title：Geology
- Contributor：Julien Charreau ; Jean-Philippe Avouac ; Yan Chen ; Stéphane Dominguez ; Stuart Gilder
- Publisher：Geological Society of America
- Date：2008-
- Format：text/html
- Language：en
- Identifier：10.1130/G25073A.1
- journal_abbrev：Geology
- issn：0091-7613
- volume：36
- issue：11
- firstpage：871
We combine surface structural measurements, subsurface seismic imaging, and magneto-stratigraphic dating to retrieve, through geometric modeling, the detailed history of fold growth and sedimentation across the Huerguosi anticline, on the northern Tianshan piedmont, taking advantage of a beautifully exposed section of growth strata. The model assumes a fault-bend folding mechanism, consistent with subsurface fold geometry. The shortening history is obtained by least-squares fitting of the measured dip angles of the growth strata. The shortening rate across the anticline is shown to have been remarkably constant: it increased only slightly from 0.84 ± 0.04 mm/yr between 10 and 4 Ma to 1.14 ± 0.02 mm/yr over the past 4 m.y. This approach also allows correcting syntectonic sedimentation rates for the effect of the fold growth and shows that the sedimentation rates in the piggyback basin increased abruptly from ~0.4 to ~0.7 mm/yr ca. 4 Ma.