Figure 17. Close up view of quarry marks. Below the 10-cm scale stick the groove in which wood wedges soaked with water were jammed is clearly visible. Because of the fine-grained igneous texture, the basalt blocks split of smoothly, similar to a flint sliver knapped from a core. 1 November, 2016.


Image Info

  • Dimensions1,329 × 882
  • TypeJPG
  • Namepic17.jpg
  • Mime Typeimage/jpeg

Leave a Reply

Your email address will not be published. Required fields are marked *