An exceptionally large cold-water coral mound province (CMP) was recently discovered extending over 80 km along the Namibian shelf (offshore southwestern Africa) in water depths of 160–270 m. This hitherto unknown CMP comprises >2000 mounds with heights of up to 20 m and constitutes the largest CMP known from the southeastern Atlantic Ocean. Uranium-series dating revealed a short but intense pulse in mound formation during the early to mid-Holocene. Coral proliferation during this period was potentially supported by slightly enhanced dissolved oxygen concentrations compared to the present Benguela oxygen minimum zone (OMZ). The subsequent mid-Holocene strengthening of the Benguela Upwelling System and a simultaneous northward migration of the Angola-Benguela Front resulted in an intensification of the OMZ that caused the sudden local extinction of the Namibian corals and prevented their reoccurrence until today.GeoRef Subject

中文翻译：

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受本格拉最低氧区引导的纳米比亚大陆架冷水珊瑚的中全新世灭绝

最近发现了一个特别大的冷水珊瑚丘省（CMP），它沿着纳米比亚大陆架（非洲西南部近海）延伸超过 80 公里，水深为 160-270 米。这个迄今为止未知的 CMP 包括 >2000 个高度高达 20 m 的土丘，构成了大西洋东南部已知的最大的 CMP。铀系列测年揭示了在全新世早期至中期的丘形成过程中短暂而强烈的脉冲。与目前的本格拉最低氧区 (OMZ) 相比，这一时期的珊瑚增殖可能受到溶解氧浓度略有增加的支持。