Other formats

    Adobe Portable Document Format file (facsimile images)   TEI XML file   ePub eBook file  

Connect

    mail icontwitter iconBlogspot iconrss icon

Victoria University Antarctic Research Expedition Science and Logistics Reports 1979-80: VUWAE 24

Diagenesis

Diagenesis

The upper 12 m of the hole are unconsolidated sediment, but below this the resistance to the bit increased dramatically and the subsequent core from level to the bottom of the hole, showed a high degree of lithification, reflected in the sonic velocities of 2 to 3 km.s−1, which record an irregular increase down the hole (Table 2). Highly cemented layers of the order of a metre thick occur at a number of levels below 140 m, and several are correlated with seismic reflectors (Table 3, Fig. 9).