The Tajik basin archives the orogenic evolution of the Pamir hinterland. Stratigraphic‐sedimentologic observations from Cretaceous‐Pliocene strata along its eastern margin describe the depositional environment and basin‐formation stages in reaction to hinterland exhumation and basin inversion. During the Late Cretaceous‐Eocene (preorogenic stage: ~100–34 Ma), a shallow‐marine to terrestrial basin extended throughout Central Asia. An alluvial plain with influx of conglomerate bodies (Baljuvon Formation) indicates a first pulse of hinterland erosion and foreland‐basin formation in the late Oligocene‐early Miocene (synorogenic stage Ia: ~34–23 Ma). Further hinterland exhumation deposited massive alluvial conglomerates (Khingou Formation) in the early‐middle Miocene (synorogenic stage Ib: ~23–15 Ma). Westward thickening growth strata suggest transformation of the Tajik basin into the Tajik fold‐thrust belt in the middle‐late Miocene (synorogenic stage IIa: ~15–5 Ma). Increased water supply led to the formation of fluvial mega‐fans (Tavildara Formation). Latest Miocene‐Pliocene shortening constructed basin morphology that blocked sediment bypass into the central basin from the east (Karanak Formation), triggering drainage‐system reorganization from transverse to longitudinal sediment transport (synorogenic stage IIb: < ~5 Ma). Accelerated shortening (~27–20 Ma) and foreland‐directed collapse (~23–12 Ma) of Pamir‐plateau crust loaded the foreland and induced synorogenic stages Ia and Ib. Coupling of Indian and Asian cratonic lithospheres and onset of northward and westward delamination/rollback of Asian lithosphere (i.e., lithosphere of the Tajik basin) beneath the Pamir at ~12–11 Ma transformed the Tajik basin into the Tajik fold‐thrust belt (synorogenic stage IIa). The timing of the sedimentologically derived basin reconfiguration matches the thermochronologically derived onset of Tajik‐basin inversion at ~12 Ma.

中文翻译：

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塔吉克盆地和西南印度－亚洲碰撞带的西南天山：3.塔吉克东部De陷与帕米尔腹地的联系的前成因到同生前陆盆地的演化。

塔吉克盆地记录了帕米尔腹地的造山演化。白垩纪—上新世地层沿其东缘的地层沉积学观测描述了对内陆发掘和盆地倒置的反应的沉积环境和盆地形成阶段。在白垩纪-始新世晚期（造山前期：〜100-34 Ma），浅海-陆相盆地扩展到整个中亚。冲积平原与砾岩体的涌入（巴尔朱旺组）表明，在渐新世-早中新世晚期（等速成因期Ia：〜34-23 Ma），出现了腹地侵蚀和前陆盆地形成的第一个脉冲。进一步的腹地发掘在中新世早期（中成因期Ib：〜23-15 Ma）沉积了大量冲积砾岩（Khingou组）。向西增厚的生长地层表明，塔吉克盆地向中新世中晚期（同相成因期IIa：〜15-5 Ma）转变成塔吉克褶皱冲断带。供水增加导致河流巨扇的形成（塔维达拉组）。最新的中新世-上新世缩短构造盆地形态，阻止了泥沙从东部（Karanak组）进入中央盆地，引发了排水系统从横向到纵向泥沙运移的重组（等速生化阶段IIb：<〜5 Ma）。帕米尔高原地壳的加速缩短（〜27–20 Ma）和前陆定向的塌陷（〜23–12 Ma）加载了前陆，并诱发了增生阶段Ia和Ib。印度和亚洲克拉通岩石圈的耦合以及亚洲岩石圈向北和向西分层/回滚的开始（即，塔吉克盆地的岩石圈（约12-11 Ma）将塔吉克盆地转变成塔吉克褶皱冲断带（成岩作用IIa期）。沉积学衍生的盆地重构的时间与塔吉克盆地反演在约12 Ma的热年代学起始相匹配。