Elongate, fine tubes, approximately 1 microm wide and up to 200 microm long, extend from fractured surfaces, vesicle walls, and internal fractures into fragments of basalt glass in samples from the Hawaii Scientific Drilling Project #2 phase 1 (HSDP #2(1)) core and the Hilina slope, Hawaii. Several features indicate that these tubes are microbial endolithic microborings: the tubes resemble many described microborings from oceanic basalt glass, their formation is postdepositional but restricted to certain but different ranges of time in the two sets of samples, and they are not uniformly distributed throughout glass fragments. Microtubules record several characteristic behaviors including boring into glass, mining, seeking olivine, and avoiding plagioclase. They also are highly associated with a particular form of glass-replacing smectite. Evidence of behavior should join morphological and geochemical criteria in indicating microbial alteration of basalt glass. In some samples, steeply conical tubes, approximately 10-20 microm in diameter tapering to 1 microm and commonly filled with smectite, appear to be modifications or elaborations of the microtubules. These also curve toward olivine and are associated with replacement smectite. In HSDP #2(1) samples, microtubules initiated at margins of shards before palagonite replaced those margins and are preserved during palagonitization. In fact, microtubules appear to have provided routes that enhanced the efficiency of water's reaching of unaltered glass. In Hilina Slope samples, the microtubules appear to postdate palagonitization because they initiate at the boundary between palagonite and unaltered sideromelane. Preservation of microtubules during palagonitization in samples together with recognition of other associated characteristics representing behavior suggests that such features may be recognizable in more heavily altered ancient rocks.

中文翻译：

---

夏威夷科学钻探项目2期1期岩心和夏威夷希利纳斜坡的玄武岩玻璃中的微管：内在微生物的发生和行为的证据。

夏威夷科学钻探项目2期1（HSDP＃2（1）样品中的细长细管从破裂的表面，囊壁和内部裂缝延伸到玄武岩玻璃碎片中，约1微米宽，最长200微米长。 ））核心和夏威夷的希利纳（Hilina）斜坡。几个特征表明这些管是微生物内生微孔：这些管类似于许多描述的海洋玄武岩玻璃微孔，它们的形成是沉积后的，但在两组样品中限制在一定但不同的时间范围内，并且它们在玻璃中分布不均匀碎片。微管记录了几种特征行为，包括钻入玻璃杯，采矿，寻找橄榄石和避免斜长石。它们还与某种形式的可代替玻璃的蒙脱石高度相关。行为的证据应与形态学和地球化学标准相结合，以指示玄武岩玻璃的微生物变化。在一些样品中，直径大约为10-20微米，逐渐变细至1微米且通常填充有蒙皂石的陡圆锥管，似乎是微管的修饰或细化。这些也向橄榄石弯曲，并与替代蒙脱石有关。在HSDP＃2（1）样品中，微管始于碎片的边缘，而后方铅矿代替了这些边缘，并在重金属化过程中保留下来。实际上，微管似乎提供了增加水到达未改变玻璃的效率的途径。在Hilina斜坡样品中，微管似乎晚于palagonitization，因为它们始于palagonite和未改变的sideromelane之间的边界。