Post-Glacial Relative Sea-Level History of Oahua and Kauai

9317328弗莱彻 一个可接受的相对海平面（RSL）的历史后， 夏威夷的冰川期尚未提出。 晚全新世 RSL的特点是逐渐减少的水均衡隆起。 新的现场证据显示，出现文件的水均衡 考艾岛、奥陶洛斯岛、莫洛凯岛，可能还有毛伊岛， 冰后期RSL上升的顶点。 初始时间 出现，它的高度，它的终止都似乎有一个 反映岛屿影响的岛屿特性 半径、距火山中心的距离以及各个地点- 具体因素。 研究将侧重于获得额外的 现场数据约束这些变量，并产生一个模型的水均衡响应沿着夏威夷海岭。 更新世和早全新世RSL周围的奥陶斯和考艾岛将记录与核心淹没海岸线。 浪蚀 凹口和淹没的珊瑚礁复合体表明以前的海平面 在可预测的深度环绕两个岛屿的位置。 一个小的， 手持风钻可对早期沉积碳酸盐岩取样 和前皇家安全队的人约会 样品的岩相学和XRD分析将 有助于解释地质历史 种别氧同位素 将从保存完好、年代久远的 样品 海洋氧同位素化学变化 冰后期的海侵将被记录下来。 研究 将产生一个详细的RSL的历史考艾岛和奥陶洛斯绑定到 稳定同位素记录融水历史的变化。

9317328 Fletcher An acceptable relative sea-level (RSL) history for the post- glacial period in Hawaii has not yet been proposed. Late Holocene RSL is characterized by gradually decreasing hydroisostatic uplift. New field evidence showing emergence documents the hydroisostatic deformation of Kauai, Oahu, Molokai, and probably Maui following the culmination of post-glacial RSL rise. The timing of initial emergence, its height, and it termination all appear to have an island-specific character reflecting the influence of island radius, distance from the volcanic center, and various site- specific factors. Research will focus on obtaining additional field data to constrain these variables and produce a model of hydroisostatic response along the Hawaii Ridge. Pleistocene and early Holocene RSL around Oahu and Kauai will be documented with cores from submerged shorelines. Wave-cut notches and drowned reef complexes indicate former sea-level positions at predictable depths encircling both islands. A small, hand-held pneumatic drill can sample early deposited carbonate dating former RSL. Petrographic and XRD analysis of samples will help define geologic history. Species-specific oxygen isotope contents will be determined from well preserved, dated coral samples. Variations in the oceanic oxygen isotope chemistry during the post-glacial transgression will be documented. The research will produce a detailed RSL history for Kauai and Oahu tied to changes in the stable isotope record of meltwater history.