TSOP membership allows you contact with leading edge research and researchers in theĀ field of organic petrology, organic geochemistry, petroleum geochemistry, analytical and environmental geochemistry. Membership benefits include also TSOP conference registration discounts, special subscription rates, and access to abstracts, proceedings volumes and field trip guides from our annual meetings. Thanks to dues and generous donations the Society for Organic Petrology is able to facilitate meetings, they contribute also to financial support of student awards and grants, including the Spackman Award (Graduate Student Research Grants), the Student Travel Award, and the Best Student Presentation Award.

TSOP dues are currently set at:
  $25/1 year for individuals
$100/5 years for individuals who pay dues in advance (5th year free)
$15/1 year for students
$75/1 year for institutional members
Dues should be paid by December 31 for the coming year.


Please follow the link to the MEMBERS ONLY TSOP SECURE SITE to check your membership status, pay your dues or make a donation. Please directed your questions to TSOP treasurer.


TSOP incorporated as a non-profit organization in the state of Virginia, USA, in 2008. Following application in June, 2009, the US Internal Revenue Service granted recognition of 501(c)(3) tax-exempt status on February 9, 2010. Classified as a public charity, TSOP is exempt from U.S. Federal income tax, and U.S. contributions to TSOP are tax deductible (section 170 of the Code). TSOP is also qualified to receive tax deductible bequests, devises, transfers, or gifts (sections 2055, 2106, or 2522 of the Code).