Changes

#:"Bottom line - Economic accumulations of oil and gas can be generated in thousands of years in sedimentary basins that have experienced hot fluid flow for similar durations."<ref name="nwcn" /><ref>The Petroleum Exploration Society of Australia No. 24, 1996, p.</ref>

#:"Bottom line - Economic accumulations of oil and gas can be generated in thousands of years in sedimentary basins that have experienced hot fluid flow for similar durations."<ref name="nwcn" /><ref>The Petroleum Exploration Society of Australia No. 24, 1996, p.</ref>

# '''Rapid Wood Petrification'''

# '''Rapid Wood Petrification'''

#:"Petrified wood was believed to required thousands or even millions of years, but a US patent now exists that is able to produce petrified wood rapidly."<ref name="nwcn" />

#:"Petrified wood was believed to required thousands or even millions of years, but a US patent now exists that is able to produce petrified wood rapidly."<ref>[http://www.google.com/patents/about?id=TXg4AAAAEBAJ&dq=patent:4612050&as_drrb_ap=q&as_minm_ap=0&as_miny_ap=&as_maxm_ap=0&as_maxy_ap=&as_drrb_is=q&as_minm_is=0&as_miny_is=&as_maxm_is=0&as_maxy_is= US patent # 4,612,050], "A liquid sodium silicate composition for application to wood for artifically petrifying the wood..."</ref><ref name="nwcn" />

#:"A mineralized sodium silicate solution for the application to wood has a composition causing it to penetrate the wood and jell within the wood so as to give the wood the non-burning characteristics of petrified wood."<ref name="nwcn" /><ref>US Patent & Trademark Office, [http://patft.uspto.gov/netacgi/nph-Parser?Sect1=PTO1&Sect2=HITOFF&d=PALL&p=1&u=%2Fnetahtml%2FPTO%2Fsrchnum.htm&r=1&f=G&l=50&s1=4,612,050.PN.&OS=PN/4,612,050&RS=PN/4,612,050 Patent No. 4,612,050]</ref>

#:"A mineralized sodium silicate solution for the application to wood has a composition causing it to penetrate the wood and jell within the wood so as to give the wood the non-burning characteristics of petrified wood."<ref name="nwcn" /><ref>US Patent & Trademark Office, [http://patft.uspto.gov/netacgi/nph-Parser?Sect1=PTO1&Sect2=HITOFF&d=PALL&p=1&u=%2Fnetahtml%2FPTO%2Fsrchnum.htm&r=1&f=G&l=50&s1=4,612,050.PN.&OS=PN/4,612,050&RS=PN/4,612,050 Patent No. 4,612,050]</ref>

# '''Tree rings'''

# '''Tree rings'''