e="MARGIN: 0cm 0cm 0pt; mso-pagination: widow-orphan; mso-margin-top-alt: auto; mso-margin-bottom-alt: auto">e="FONT-SIZE: 14pt; mso-font-kerning: 0pt">e="Times New Roman">49 sandstone samples from the Upper Triassic Langjiexue Group in espace prefix = st1 ns = "urn:schemas-microsoft-com:office:smarttags" />