South African borehole subsurface Targeted loci environmental. subsurface metagenome

The South African borehole of interest is at a depth of 1.34 km (BE326 Bh2). This sub-horizontal borehole penetrates 57 meters into a medium to coarse-grained sub-lithic arenite to intersect a NNW striking fault zone where it encountered high-pressure water with a flow rate of 750 L min-1. Since it was first drilled in 2007, it has been sealed off with a high pressure steel valve. The brackish, alkaline paleometeoric water and microbial communities collected from this borehole were first characterized in 2011. PIs Cara Magnabosco and Tullis Onstott.

本次研究关注的南非钻孔（BE326 Bh2）深度达1.34千米。该近水平钻孔向下钻进57米，穿过中粗粒亚岩屑质砂岩，并与北西北走向的断裂带相交，此处遇到了流速为750升每分钟的高压水。该钻孔于2007年首次钻进后，便通过高压钢制阀门完成密封。本钻孔采集的微咸碱性古大气水与微生物群落已于2011年完成首次特征表征，项目负责人为Cara Magnabosco与Tullis Onstott。