Different analytical methods including total organic carbon (TOC), Rock-Eval pyrolysis, and conventional biomarker analyses were applied ... The relatively low Ga/C 30 hopane values of oil shale ...

Rocks are categorized into three main types: igneous, sedimentary, and metamorphic. There are over 4,000 identified minerals on Earth. Common rocks include granite, basalt, limestone, and sandstone.

Robbers used explosives to force open a door at a Dutch museum early Saturday morning, stealing several gold masterpieces, museum officials said in a statement. Police received a report at 3:45 a ...