Ar-40/Ar-39 dating of oil generation and migration at complex continental margins

作者：Mark Darren F^*; Parnell John; Kelley Simon P; Lee Martin R; Sherlock Sarah C

来源：Geology, 2010, 38(1): 75-78.

DOI：10.1130/G30237.1

Oil-bearing fluid inclusions trapped within authigenic K-feldspar in Late Jurassic reservoirs throughout the UK Atlantic margin are evidence for an early oil migration event from Late Jurassic source rocks in the Faeroe-Shetland Basin. Previous compound-specific isotope studies confirm the hydrocarbon provenance. Temperature-composition-time data show that the Late Jurassic source rocks were oil mature 113 +/- 3.5 Ma (2 sigma). This new (40)/Ar/Ar-39 atithigenic K-feldspar age shows that the Late Jurassic source rocks were oil mature 30-40 m.y. prior to current estimates.

• 出版日期2010-1