The cyclic to non-cyclic Pennsylvanian-Lower Permian successions of the Robledo Mountains, New Mexico and the Carnic Alps, south Austria, record the acme and demise of the late Palaeozoic ice age (LPIA). Microfacies analyses of cyclic strata of the Pennsylvanian-Asselian Horquilla, Shalem Colony (New Mexico), and Schulterkofel (Carnic Alps) formations record glacioeustatic sea-level fluctuations of an amplitude on the order of 100 m. These fluctuations were the result of Milankovitch-driven eustatic sea-level shifts associated with the waxing and waning of ice sheets during the peak of the main phase of the LPIA. Microfacies analyses of the overlying upper Asselian cyclothems of the Community Pit, Robledo Mountains (New Mexico) and Zweikofel (Carnic Alps) formations record relatively moderate sea-level variations on the order of a few tens of metres (~ 30–40 m). This comparatively minor sea-level amplitude may be linked to the demise of ice sheets during the final stages of the LPIA and the limited input that shrinking ice sheets had on global sea-level fluctuations prior to their final collapse at the Asselian-Sakmarian boundary. The uppermost part of the Robledo Mountains and the Apache Dam (New Mexico) and Zottachkopf (Carnic Alps) formations are Sakmarian. These strata are interpreted as non-cyclic and represent sedimentation following the end of the LPIA.

新墨西哥州 Robledo 山脉和奥地利南部 Carnic 阿尔卑斯山的循环到非循环宾夕法尼亚-下二叠纪地层记录了晚古生代冰河时代 (LPIA) 的顶点和消亡。Pennsylvanian-Asselian Horquilla、Shalem Colony（新墨西哥州）和 Schulterkofel（Carnic Alps）地层的循环地层的微相分析记录了振幅为 100 m 量级的冰川海平面波动。这些波动是 Milankovitch 驱动的海平面上升变化的结果，与 LPIA 主要阶段高峰期间冰盖的消长有关。Community Pit 上覆 Asselian 环状体的微相分析，Robledo 山脉（新墨西哥州）和 Zweikofel（Carnic 阿尔卑斯山）构造记录了相对温和的海平面变化，大约为几十米（~ 30-40 m）。这种相对较小的海平面振幅可能与 LPIA 最后阶段冰盖的消亡以及冰盖在 Asselian-Sakmarian 边界最终崩塌之前对全球海平面波动的输入有限有关。Robledo 山脉和 Apache Dam（新墨西哥州）和 Zottachkopf（Carnic 阿尔卑斯山）地层的最上部是 Sakmarian。这些地层被解释为非循环的，代表了 LPIA 结束后的沉积。这种相对较小的海平面振幅可能与 LPIA 最后阶段冰盖的消亡以及冰盖在 Asselian-Sakmarian 边界最终崩塌之前对全球海平面波动的输入有限有关。Robledo 山脉和 Apache Dam（新墨西哥州）和 Zottachkopf（Carnic 阿尔卑斯山）地层的最上部是 Sakmarian。这些地层被解释为非循环的，代表了 LPIA 结束后的沉积。这种相对较小的海平面振幅可能与 LPIA 最后阶段冰盖的消亡以及冰盖在 Asselian-Sakmarian 边界最终崩塌之前对全球海平面波动的输入有限有关。Robledo 山脉和 Apache Dam（新墨西哥州）和 Zottachkopf（Carnic 阿尔卑斯山）地层的最上部是 Sakmarian。这些地层被解释为非循环的，代表了 LPIA 结束后的沉积。