Hells Bells - microbially generated underwater speleothems from Yucatán, Mexico

地狱钟声 - 来自墨西哥尤卡坦州的微生物产生的水下洞穴

• 批准号: 351362160
• 负责人: Professor Dr. Eberhard Frey
• 金额: --
• 依托单位: Museo del Desierto
• 依托单位国家: 德国
• 项目类别: Research Grants
• 财政年份: 2017
• 资助国家: 德国
• 起止时间: 2016-12-31 至 2019-12-31
• 项目状态: 已结题
• 来源: https://gepris.dfg.de/gepris/projekt/351362160?language=en
• 关键词: Hells; Bells; microbially; generated; underwater

During our on-going research on the archaeological and ecological geoarchives preserved in the submerged Yucatan cave system, we recently discovered a yet unknown type of meter-sized pendant speleothem from the submerged El Zapote and other sinkholes (cenotes) west of Puerto Morelos on the Mexican Yucatán Peninsula. These conical, mantle-shaped downward expanding and diverging calcareous structures, here termed Hells Bells, are characterized by bell- or trumpet shaped longitudinal and circular, elliptical or horse-shoe-like horizontal cross-sections. According to our initial analysis, Hells Bells grow in a lightless oxygen-depleted and H2S-rich subaqueous environment at or above the halocline at water depths of 29-35 meters. We hypothesize that the growth of these structures is caused by microbial calcite precipitation, which preferentially takes place on the bottom surface of the cones, as is implied by excentric apicoradial downward divergence of the structures and by the horizontally laminated internal texture. We here propose to investigate these structures in greater detail to provide answers on their formation, age, and regional distribution. We will also initiate research on the microbial communities that may have formed these unique speleothems.

在我们对水下尤卡坦洞穴系统中保存的考古和生态地质档案进行持续研究期间，我们最近在墨西哥尤卡坦半岛上的莫雷洛斯港以西的水下El Zapote和其他天坑（洞穴）中发现了一种尚未发现的米级悬挂洞穴。这些圆锥形、地幔状的向下扩张和发散的钙质结构，在这里被称为地狱钟，其特征是钟形或喇叭形的纵向和圆形、椭圆形或马蹄形的水平横截面。根据我们的初步分析，地狱钟生长在一个无光的缺氧和富含H2S的水下环境中，在盐跃层或以上，水深29-35米。我们假设，这些结构的增长是由微生物方解石沉淀，这优先发生在锥的底表面上，暗示偏心apicoradial向下发散的结构和水平层状内部纹理。在这里，我们建议更详细地调查这些结构，以提供它们的形成，年龄和区域分布的答案。我们还将启动对可能形成这些独特洞穴沉积物的微生物群落的研究。

项目成果

Subaqueous speleothems (Hells Bells) formed by the interplay of pelagic redoxcline biogeochemistry and specific hydraulic conditions in the El Zapote sinkhole, Yucatán Peninsula, Mexico

墨西哥尤卡坦半岛 El Zapote 天坑中上层氧化还原素生物地球化学和特定水力条件相互作用形成的水下洞穴（地狱之钟）

• DOI: 10.5194/bg-16-2285-2019
• 发表时间: 2019
• 期刊: Biogeosciences
• 影响因子: 4.9
• 作者: Ritter;Isenbeck-Schröter;Scholz;Keppler;Gescher;Schorndorf;Avilés Olguín;González-González;Stinnesbeck
• 通讯作者: Stinnesbeck

Erforschen eines Cenotes in Mexiko mit einer Multisonde

使用多探头探索墨西哥的天然井

• DOI: 10.1007/s35147-018-0233-6
• 发表时间: 2018
• 期刊: WASSERWIRTSCHAFT
• 影响因子: 0.2
• 作者: Ritter;Scholz
• 通讯作者: Scholz