Th mrcn ssctn f Ptrlm Glgsts (PG) s n f th wrld's lrgst prfssnl glgcl scts wth bt 17,000 mmbrs crss 129 cntrs. Th PG wrks t "dvnc th scnc f glgy, spclly s t rlts t ptrlm, ntrl gs, thr sbsrfc flds, nd mnrl rsrcs; t prmt th tchnlgy f xplrng fr, fndng, nd prdcng ths mtrls n n cnmclly nd nvrnmntlly snd mnnr; nd t dvnc th prfssnl wll-bng f ts mmbrs." Th PG ws fndd n 1917 nd s hdqrtrd n Tls, klhm; crrntly lmst n-thrd f ts mmbrs lv tsd th ntd Stts.
vr th yrs, th ctvts f th PG hv brdnd s tht thy brng tgthr nt jst glgy bt ls gphyscs, gchmstry, ngnrng, nd nnvtv nlytcs t nbl th mr ffcnt nd nvrnmntlly-frndly pprchs t th dvlpmnt f ll rth-bsd nrgy srcs. Nw trnsfrmtv tchnlgs, sch s th blty t bttr chrctrz rsrvrs thrgh mgng nd th ntgrtn f mltpl dt srcs, r cpld wth cncrns bt th nvrnmnt. Mmbrs nd ffltd scts r vry mch nvlvd n prsrvng th qlty f grndwtr, dlng rspnsbly wth prdcd wtr, nd ndrstndng th mchnsms f ndcd ssmcty. n ddtn t sbsrfc nvstgtns, th scty spprts mppng f th srfc nd th s f nw tchnlgs (Vs, drns, bg dt nlytcs), wth th gls f dvncng th scnc nd ndrstndng f glgcl prcsss.
PG pblshs th PG xplrr mgzn nd PG Blltn scntfc jrnl, nd c-pblshs scntfc jrnl wth th Scty f xplrtn Gphyscsts clld ntrprttn. Th rgnztn hlds n nnl mtng ncldng tchncl cnfrnc nd xhbtn, spnsrs thr cnfrncs nd cntnng dctn fr mmbrs rnd th wrld sch s ngng Gscncs Tchnlgy Wrkshps, nd prvds vrs thr srvcs t ts mmbrs. Th rgnztn ls nclds dvsns fcsd n prtclr spcts f th prfssn. Ths ncld th Dvsn f nvrnmntl Gscncs, Dvsn f Prfssnl ffrs, nd th nrgy nd Mnrls Dvsn. Th ssctn mmbrshp hs ncldd Hrrsn "Jck" Schmtt, .S. strnt wh wlkd n th Mn.