Richard J. Goldfarb

TL;DR: In this paper, the authors show that gold deposits of all ages, from Paleo-archean to Tertiary, show consistency in chemical composition, with high concentrations of CH 4 and/or N 2, common estimates of 0.01-0.36% H 2 S, a near neutral pH of 5.5, and salinities of 3-7.5.

TL;DR: The oldest gold deposits in Asia reflect accretionary events along the margins of the Siberia, Kazakhstan, North China, Tarim-Karakum, South China, and Indochina Precambrian blocks while they were isolated within the Paleotethys and surrounding Panthalassa Oceans as discussed by the authors.

TL;DR: The Jiaodong gold deposits as discussed by the authors are the largest gold deposits in the world, with an overall endowment estimated as >3,000 t Au. The vein and disseminated ores are hosted by NE-to-NNE-trending brittle normal faults that parallel the margins of ca. 165-150 ma, deeply emplaced, lower crustal melt granites.

TL;DR: There are six distinct classes of gold deposits, each represented by metallogenic provinces, having 100's to >1000 tonne gold production as mentioned in this paper : orogenic gold; (2) Carlin and Carlin-like gold deposits; (3) epithermal gold-silver deposits; copper-gold porphyry deposits; iron-oxide copper-Gold deposits; and (6) gold-rich volcanic hosted massive sulfide (VMS) to sedimentary exhalative (SEDEX) deposits.

TL;DR: In this paper, the authors focus on the late timing of orogenic gold deposits and show that they formed in the time interval between 40 and 90 m.y., after the youngest widespread basic-ultrabasic volcanism.