Many Paradox Basin passive salt diapirs underwent a prolonged history (>65 my) of progressive burial during the Early Triassic to Jurassic. Burial is recorded by a series of geographically limited wedge-shaped stratal panels of diapiric roof, termed ‘burial wedges’, which partly covered the diapirs, thereby gradually narrowing them. Tectonostratigraphic analysis of the Triassic Chinle Fm. burial wedge developed on the Gypsum Valley diapir illustrates the typical features and processes associated with burial wedges. Burial wedges represent the first description of the geometry and deposition of strata deposited on a partially buried diapir. Recognition of burial wedges allows reinterpretation of Paradox Basin diapirs where large areas of the roof strata were syndepositionally folded rather than deformed in the Neogene. The observations and concepts can also be applied to the terminal histories of passive salt diapirs in other salt basins. Preserved burial wedges cover 97 km², or 64% of the original Gypsum Valley diapir and overlie regional unconformities. Onlapping strata stack into wedge halokinetic sequences (HS). Caprock-clast conglomerates indicate deposition on exposed diapirs. Syndepositional deformation of burial wedge strata formed small synclinal ‘microbasins’ and contractional chevron folds trending subparallel to the diapir margin. A four-stage burial wedge model includes the following: (1) erosion of the diapir roof during formation of regional unconformities; (2) onlap and partial burial of the diapir; (3) local dissolution and possible concomitant gravity-driven folding and (4) ongoing rotation during deposition, forming wedge HS signifying continued inflation of the top of the diapir. Post formation, the burial wedges were deformed in ways that obscure their original geometry. The most common deformation is downwarping of the burial wedge into the diapir due to dissolution or lateral movement of salt, creating an anticlinal fold that overlies the underlying diapir margin. These anticlines may be offset on small normal faults subparallel to the diapir margin. Burial wedges were faulted during later diapir breaching and solution collapse.

中文翻译：

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埋葬楔——悖论盆地盐墙长期渐进式埋葬的证据——以科罗拉多州石膏谷的一个详细例子

在早三叠世至侏罗纪期间，许多悖论盆地被动盐底辟经历了长期（>65 米）的渐进式埋葬。埋葬是由一系列地理上有限的楔形地层板记录的，称为“埋葬楔”，它部分覆盖了底辟，从而逐渐变窄。三叠纪钦勒组构造地层学分析。在石膏谷底辟开发的埋葬楔展示了与埋葬楔相关的典型特征和过程。埋葬楔代表了沉积在部分埋藏的底辟上的地层的几何形状和沉积的第一个描述。对埋藏楔的识别允许重新解释悖论盆地底辟，其中大面积的顶板在新近纪中被同沉积折叠而不是变形。这些观察和概念也可以应用于其他盐盆地被动盐底辟的终末历史。保留的埋葬楔覆盖 97 公里²，或原始石膏谷底辟的 64% 和上覆区域不整合面。上覆地层堆叠成楔形卤代动力学序列（HS）。盖岩碎屑砾岩表明沉积在暴露的底辟上。埋藏楔形地层的同沉积变形形成了小的向斜“微盆地”和收缩的人字形褶皱，其趋势与底辟边缘亚平行。四阶段埋藏楔模型包括：（1）区域不整合形成过程中底辟顶板的侵蚀；(2) 底辟的上重叠和部分埋藏；（3）局部溶解和可能伴随的重力驱动折叠和（4）沉积过程中的持续旋转，形成楔形HS，表示底辟顶部的持续膨胀。形成后，埋葬楔形变，使其原始几何形状模糊不清。最常见的变形是由于盐的溶解或横向移动，埋藏楔向下翘曲进入底辟，形成了覆盖在下面的底辟边缘的背斜褶皱。这些背斜可能在平行于底辟边缘的小型正断层上被抵消。在后来的底辟破坏和溶液坍塌期间，埋葬楔出现了故障。