A Look Back…50 years:

The origin of silica that forms the cement ubiquitous in many successions was a topic of debate fifty years ago.  Towe (1962) reviewed several studies and suggested that clay minerals present in shale might be transformed, releasing “a possible source of silica which may be of importance in some sedimentary rocks.”  (March 1962)


Clay mineral diagenesis as a possible source of silica cement in sedimentary rocks by Kenneth M. Towe