简介：Basedontheanalysisofsideritedistribution,occurrence,chemicalcompositionk,structurealcharacteristics,carbon-oxygenisotopiccharacteristicsandrelationshipbetweensideriteandhematite,thispaperpresentsasystematicstudyofsideriteintheregionstudied.suggestingthatthesideriteintheXuanlongareageneticallyresultedfromorganicallyreducedprimaryhematiteduringthediagenesis.Theferricandferrousrelationsdirectlydependonorganiccontents.Inthepresenceoforganicmatterferrousironcanbeconvertedtoferricironthroughorganicreduction.Theaboveconclusionhasalsobeenprovedbyorganicgeochemistry.data.

简介：Thebulkcompositionoforganicmatterandsaturatedandaromatichydrocarbonsex-tractedfrom16samplescollectedfromtwoKupferschieferprofilesintheRudnamine,SouthwestPolandhasbeenanalyzedtostudytheroleoforganicmatterduringbasemetalenrichmentintheKupferschiefershale.Theresultsindicatedthattheextractyieldsandsaturatedhydrocarbonyieldsdecreasedwithincreasingbasemetalcontents.GCandGC/MSanalysesindicatedthatn-alkanesandalkylatedaromaticcompoundsweredepletedandmayhaveservedashydrogendonatorsforthermochemicalsulfatereduction.Theenrichmentofbasemetalsiscloselyconnect-edwiththedestructionofhydrocarbons.