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DOI | 10.1073/pnas.1612147114 |
Subduction zone forearc serpentinites as incubators for deep microbial life | |
Plumper, Oliver1; King, Helen E.1; Geisler, Thorsten2; Liu, Yang1,3; Pabst, Sonja4; Savov, Ivan P.5; Rost, Detlef6; Zack, Thomas7 | |
2017-04-25 | |
发表期刊 | PROCEEDINGS OF THE NATIONAL ACADEMY OF SCIENCES OF THE UNITED STATES OF AMERICA |
ISSN | 0027-8424 |
出版年 | 2017 |
卷号 | 114期号:17页码:4324-4329 |
文章类型 | Article |
语种 | 英语 |
国家 | Netherlands; Germany; Australia; England; New Zealand; Sweden |
英文摘要 | Serpentinization-fueled systems in the cool, hydrated forearc mantle of subduction zones may provide an environment that supports deep chemolithoautotrophic life. Here, we examine serpentinite clasts expelled from mud volcanoes above the Izu-Bonin-Mariana subduction zone forearc (Pacific Ocean) that contain complex organic matter and nanosized Ni-Fe alloys. Using time-of-flight secondary ion mass spectrometry and Raman spectroscopy, we determined that the organic matter consists of a mixture of aliphatic and aromatic compounds and functional groups such as amides. Although an abiotic or subduction slab-derived fluid origin cannot be excluded, the similarities between the molecular signatures identified in the clasts and those of bacteria-derived biopolymers from other serpentinizing systems hint at the possibility of deepmicrobial life within the forearc. To test this hypothesis, we coupled the currently known temperature limit for life, 122 degrees C, with a heat conduction model that predicts a potential depth limit for life within the forearc at similar to 10,000 m below the seafloor. This is deeper than the 122 degrees C isotherm in known oceanic serpentinizing regions and an order of magnitude deeper than the downhole temperature at the serpentinized Atlantis Massif oceanic core complex, Mid-Atlantic Ridge. We suggest that the organic-rich serpentinites may be indicators for microbial life deep within or below the mud volcano. Thus, the hydrated forearc mantle may represent one of Earth's largest hidden microbial ecosystems. These types of protected ecosystems may have allowed the deep biosphere to thrive, despite violent phases during Earth's history such as the late heavy bombardment and global mass extinctions. |
英文关键词 | deep biosphere serpentinization subduction zone forearc |
领域 | 地球科学 ; 气候变化 ; 资源环境 |
收录类别 | SCI-E |
WOS记录号 | WOS:000399995600038 |
WOS关键词 | HYDROTHERMAL CIRCULATION ; METHANE FORMATION ; MUD VOLCANISM ; LOST CITY ; HEAT-FLOW ; MARIANA ; MANTLE ; PLATE ; DEVOLATILIZATION ; ENVIRONMENT |
WOS类目 | Multidisciplinary Sciences |
WOS研究方向 | Science & Technology - Other Topics |
URL | 查看原文 |
引用统计 | |
文献类型 | 期刊论文 |
条目标识符 | http://119.78.100.173/C666/handle/2XK7JSWQ/204695 |
专题 | 地球科学 资源环境科学 气候变化 |
作者单位 | 1.Univ Utrecht, Dept Earth Sci, NL-3584 CD Utrecht, Netherlands; 2.Univ Bonn, Steinmann Inst Geol Mineral & Palaontol, D-53115 Bonn, Germany; 3.Univ Utrecht, Debye Inst Nanomat Sci, NL-3584 CC Utrecht, Netherlands; 4.BHP Billiton Western Australia Iron Ore, Perth, WA 6000, Australia; 5.Univ Leeds, Sch Earth & Environm, Inst Geophys & Tecton, Leeds LS2 9JT, W Yorkshire, England; 6.Univ Auckland, Dept Phys, Auckland 1010, New Zealand; 7.Univ Gothenburg, Dept Earth Sci, S-40530 Gothenburg, Sweden |
推荐引用方式 GB/T 7714 | Plumper, Oliver,King, Helen E.,Geisler, Thorsten,et al. Subduction zone forearc serpentinites as incubators for deep microbial life[J]. PROCEEDINGS OF THE NATIONAL ACADEMY OF SCIENCES OF THE UNITED STATES OF AMERICA,2017,114(17):4324-4329. |
APA | Plumper, Oliver.,King, Helen E..,Geisler, Thorsten.,Liu, Yang.,Pabst, Sonja.,...&Zack, Thomas.(2017).Subduction zone forearc serpentinites as incubators for deep microbial life.PROCEEDINGS OF THE NATIONAL ACADEMY OF SCIENCES OF THE UNITED STATES OF AMERICA,114(17),4324-4329. |
MLA | Plumper, Oliver,et al."Subduction zone forearc serpentinites as incubators for deep microbial life".PROCEEDINGS OF THE NATIONAL ACADEMY OF SCIENCES OF THE UNITED STATES OF AMERICA 114.17(2017):4324-4329. |
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