The TM/TS index as the ratio of two isomeric peaks of C27H46 trinurhopane in the m/e 191 fragmentogram is one of the important molecular parameters for petroIeu
Palaeomagnetie measurement on 254.samples. from the 600 m-long drill core Bo-3(118°30'E, 39°15'N) clearly reveals the epoches of Gauss normal p