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peneplain    
n. 准平原

准平原

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  • Peneplain - an overview | ScienceDirect Topics
    An old peneplain could be ‘rejuvenated’ by uplift or falling base level and thereby slowly devoured by fresh erosion As Davis described the peneplain: “the decrepit surface must wait either until extinguished by submergence below the sea, or regenerated by elevation into a new cycle of life” (Davis, 1885: 432) This approach seemed to
  • Erosion, isostatic response, and the missing peneplains
    The peneplain—a low-relief erosional plain worn to near base level—is a venerable concept in geomorphology, geology, and geography Cyclic theories of landform development, particularly those deriving from the work of William Morris Davis, typically postulate that denudation should lead to a peneplain
  • Landscape evolution of a bedrock peneplain on the southern Tibetan . . .
    The peneplain is developed in Cretaceous granitoids and Jurassic metasediments of the northern Lhasa block (90°E, 31°N) and originally had a minimum extent of ~ 150 km east–west and ~ 75 km north–south It has been dissected by small rivers that generated a few hundred meters of relief and formed additional bedrock surfaces of limited
  • Late Miocene-Pliocene geomorphological evolution of the Xiaoshuizi . . .
    The modern landscape of the Xiaoshuizi peneplain is characterized by an undulating, flattish topography and several monadnocks (Fig 2, Fig 3) The Xiaoshuizi peneplain cross-cuts the region's Sinian limestone and Presinian migmatite marble, and is overlain by thick red clay and Late Pleistocene loess (Fig 3)
  • The Pan-Amazonian Ucayali Peneplain, late Neogene sedimentation in . . .
    The buried peneplain is readily observed in river cutbanks throughout Amazonia as the marked, often angular Ucayali Unconformity that separates eroded, older, often folded, faulted, and weathered, moderately to well consolidated Tertiary formations from unconsolidated, near horizontal, upper Neogene deposits
  • Regolith residence time and the concept of surface age of the Piedmont . . .
    Far from being the inactive "mature" landscape envi- sioned by Davis, the Piedmont appears to be an integral part of the geologically active and evolving Appalachian orogen Summary The assumption of a "peneplain" is an incor- rect starting point for investigation of a Pied- mont or other surface of low relief
  • Erosion, isostatic response, and the missing peneplains
    The peneplain—a low-relief erosional plain worn to near base level—is a venerable concept in geomorphology, geology, and geography Cyclic theories of landform development, particularly those deriving from the work of William Morris Davis, typically postulate that denudation should lead to a peneplain
  • Cretaceous to Cenozoic evolution of the northern Lhasa Terrane and the . . .
    For the indirect dating of peneplain formation the application of thermochronological methods can serve time constraints The apatite fission track and apatite and zircon (U–Th) He techniques (later these methods are abbreviated as AFT, AHe and ZHe, respectively) describe the cooling history of the basement in which the peneplain was carved
  • The Pan-Amazonian Ucayali Peneplain, late Neogene sedimentation in . . .
    The buried peneplain is readily observed in river cutbanks throughout Amazonia as the marked, often angular Ucayali Unconformity that separates eroded, older, often folded, faulted, and weathered, moderately to well consolidated Tertiary formations from unconsolidated, near horizontal, upper Neogene deposits
  • Late Miocene-Pliocene geomorphological evolution of the Xiaoshuizi . . .
    The Xiaoshuizi peneplain is well preserved in the Maxian Mountains of the northeastern TP and is covered by thick aeolian red clay-loess sequences Our new high-resolution magnetostratigraphic evidence suggests that the red clay covering on the Xiaoshuizi peneplain can be dated from ~ 6 9 to ~ 3 6 Ma





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