Taphonomic Perspectives of Carbonate Sedimentation, Graham's Harbor

将对现代海相碳酸盐环境中的挖掘学和沉积学过程进行为期18个月的研究。PIS将评估巴哈马格雷厄姆港六个不同环境的生物、物理和沉积学特征。这项研究的目标是(1)对比和比较格雷厄姆港内各种碳酸盐环境的开挖损失率与德克萨斯州海岸测量的损失率-碎屑环境中的损失率与碳酸盐环境中的损失率是否不同？碳酸盐环境中的损失率可能低于碎屑环境中的损失率。如果损失率较低，那么死亡组合和分析化石记录可能包含更多最初的想法。(2)为了在非常精细的环境尺度上识别运输的组合--我们将量化格雷厄姆港栖息地之间和栖息地内的运输。本研究发展和完善的技术应可应用于化石露头的分析。(3)生物群落和死亡组合的大小频率分析--碳酸盐死亡组合是否比碎屑环境更准确地代表了生物群落的种群动态？(4)将确定格雷厄姆港六个不同环境中生物群的生物特征，并与沉积记录进行比较。沉积学参数与挖掘学性质的关系有多密切？

An eighteen month study of taphonomic and sedimentologic processes in a modern marine carbonate environment will be conducted. PIs will assess the biologic and physical and sedimentologic characteristics of six diverse environments in Graham's Harbor, Bahamas. The objectives of the study are (1) to contrast and compare rates of taphonomic loss from a variety of carbonate environments within Graham's Harbor with those measured rates along the Texas coast--are loss rates in clastic environments different than those in carbonate environments? Loss rates in carbonate environments may be less than in clastic environments. If loss rates are less, then the death assemblage and by analyogy, the fossil record, might contain more of the original thought. (2) to recognize transported assemblages on a very fine environmental scale--we will quantify transport between and within habitat in Graham's Harbor. The techniques developed and perfected in this study should be transferable to the analysis of fossil outcrops. (3) size frequency analysis of the living community and death assemblage--do carbonate death assemblages contain a more accurate representation of the population dynamics of the living community than in clastic environments? (4) Taphonomic signatures of the biota from six distinct environments in Graham's Harbor will be determined and compared with the sedimentary record. How closely do sedimentologic parameters reflect taphonomic properties?