Fang Dianyong; Wang Rujian; Shao Lei; Qi Jingyu; Wang Pinxian; Chi Shugen (2002): Silica diagenesis of deep-sea Oligocene sediments at ODP Site 1148, South China Sea. Science Press, Beijing, China, Haiyang Dizhi yu Disiji Dizhi = Marine Geology & Quaternary Geology, 22 (2), 75-79, georefid:2009-024649

Abstract:
X-ray diffraction and scanning electron microscopy analyses were performed on 200 samples taken from deep-sea Oligocene sediments from a core depth of 450 m and 850 m at ODP Site 1148 in the northern South China Sea. The results show that opal-A in siliceous fossils was transformed into opal-CT in the interval between 475 m and 600 m. With increasing depth, the fragmentation of siliceous fossils increased, the X-ray peaks of authigenic quartz became more prominent, and the X-ray peaks of opal-CT reduced in intensity, indicating the occurrence of opal-CT in quartz transformation in this interval.
Coverage:
West: 116.3356 East: 116.3356 North: 18.5010 South: 18.5010
Relations:
Expedition: 184
Site: 184-1148
Data access:
Provider: SEDIS Publication Catalogue
Data set link: http://sedis.iodp.org/pub-catalogue/index.php?id=2009-024649 (c.f. for more detailed metadata)
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