Cold-water coral mound genesis: IODP Leg 307 and Pleistocene Mediterranean occurrences

冷水珊瑚丘成因：IODP Leg 307 和更新世地中海事件

• 批准号: 28853413
• 负责人: Professor Dr. André Freiwald
• 金额: --
• 依托单位: Abteilung Meeresforschung
• 依托单位国家: 德国
• 项目类别: Infrastructure Priority Programmes
• 财政年份: 2006
• 资助国家: 德国
• 起止时间: 2005-12-31 至 2009-12-31
• 项目状态: 已结题
• 来源: https://gepris.dfg.de/gepris/projekt/28853413?language=en
• 关键词: Cold; water; coral; mound; genesis

For the first time, sedimentary sequences through a giant carbonate mound and adjacent off-mound areas were drilled on IODP Exp. 307 ¿Modern Carbonate Mounds: Porcupine Drilling¿. Preliminary results show that the mound evolution is enhanced by the presence of sediment-trapping cold-water corals from the beginning of mound growth in the Early Pleistocene. Indications for hydrocarbon seepage on mound evolution are weak so far. This proposal intends to investigate coral mound evolution as a mirror of biological, sedimentological and palaeoceanographic interactions during the past 2 Ma years based on on-mound and off-mound IODP core sections. For comparison, the excellently preserved La Montagna Mound, Sicily (Plio-Pleistocene) will be included in this study. By applying microfacies, XRD, stable isotope analyses added by biostratigraphic and ESRdating techniques, a first sequence-stratigraphic model for the deep cold-water carbonate factory will be developed as endproduct.

首次在IODP Exp上钻探了穿过一个巨大的碳酸盐土丘和邻近的土丘外地区的沉积序列。现代碳酸盐岩丘：豪猪钻探。初步结果表明，从早更新世丘陵发育开始，捕获沉积物的冷水珊瑚的存在促进了丘陵的演化。到目前为止，丘状演化的油气渗漏迹象很弱。这一建议旨在研究珊瑚丘的演化，以此作为过去2 Ma期间生物、沉积学和古海洋学相互作用的镜子，基于丘上和丘外IODP岩心切片。为了进行比较，保存完好的西西里岛拉蒙塔尼亚丘陵(上更新世)将被包括在这项研究中。通过应用微相、X射线衍射、稳定同位素分析、生物地层学和ESR测年技术，建立了深部冷水碳酸盐岩厂的第一个层序地层模型。