quot;MARGIN: 0cm 0cm 0pt; mso-pagination: widow-orphan; mso-margin-top-alt: auto; mso-margin-bottom-alt: auto">quot;FONT-SIZE: 14pt; mso-font-kerning: 0pt">quot;Times New Roman">///The quot;urn:schemas-microsoft-com:office:smarttags" />quot;on" UnitName="m" SourceValue="25.5" HasSpace="True" Negative="False" NumberType="1" TCSC="0">25.5 m deep Borehole ZK4, located in the quot;on">Lower quot;on">Liaohe quot;on">River depression in the coastal zone of quot;on">quot;on">Liaoning quot;on">Province, explores 24 hidden layers of strata, involving Holocene and part of Pleistocene. By analysis on 24 samples for forming environment, 2 marine beds and 7 times of sea-level fluctuations are identified.quot;urn:schemas-microsoft-com:office:office" />