Correlation and Chronology of Marine Transgressions in Western Alaska (Collaborative Research)

晚新生代海相沉积覆盖阶地和海岸 阿拉斯加西部和北方的平原提供了 详细记录了高海平面事件，是已知最完整的 在北极的任何地方。 与冰碛物互层 序列，这些存款包含了宝贵的年鉴北极 古气候，并建立起源时间和大部分的 北冰洋冰盖的历史。 化石 晚新生代海相沉积也记录了海相和 大陆扩散事件，从而补充和跨洋 相关性 这项研究将应用氨基酸地质年代学， 海洋热释光和古地磁研究 苏厄德圣劳伦斯岛的海侵沉积 半岛和Kotzebue海湾周围，以评估和 纠正了之前发表的年龄相关性。 这项研究将 因此，我们可以更确切地了解 阿拉斯加西部和北方的海平面变化， 一系列非常有用的时间平面， 北极古气候和古海洋学的天气学知识 政权。

Late Cenozoic marine deposits blanketing terraces and coastal plains in western and northern Alaska provide an exceptionally detailed record of high sea level events, the most complete known in any part of the Arctic. Interbedded with glacial drift sequences, these deposits contain an invaluable almanac of Arctic paleoclimates, and establish the time of origin and much of the subsequent history of the Arctic Ocean ice cover. Fossils in the late Cenozoic marine deposits also record both marine and continental dispersal events and thus supplement and interoceanic correlations. This investigation will apply amino-acid geochronology, thermoluminescence, and paleomagnetic studies to marine transgressive deposits exposed on St. Lawrence Island, Seward Peninsula, and around Kotzebue Sound in order to evaluate and correct previously published age correlations. The study will thus result in a much firmer knowledge of the extent and timing of sea-level changes in western and northern Alaska and will provide an extremely useful series of time planes for the development of synoptic knowledge of Arctic paleoclimates and paleo-oceanographic regimes.