Carlin Trend and the Carlin mine
A belt of gold deposits in northern Nevada, where in 1961 Newmont geologists found gold too fine to see or pan: the first of the 'Carlin-type' deposits. The ore formed in the Eocene, about 40 to 36 million years ago; the trend had yielded over 50 million troy ounces by 2002.
Dated events and their evidence
- about 38,000,000 years ago mainstream
the Carlin-type gold deposits form in the Eocene, together with an intense burst of magmatism about 40 to 36 million years ago; their age is settled, the source of their heat, fluids and metals is still debated source - 1961 CE mainstream
following Ralph Roberts of the USGS, the Newmont geologists John Livermore and Alan Coope search for 'invisible gold' and in October stake the claims that become the Carlin mine source - 1965 CE mainstream
the Carlin mine starts producing gold in May; it is idled in 1987 after nearly 4 million ounces source - 2002 CE mainstream
production from the Carlin Trend passes 50 million troy ounces (about 1,600 t) of gold source
Where
40.9120° N, 116.3230° W
The point is the original Carlin mine in Eureka County (40.91194, -116.32306, USGS mine record via westernmininghistory.com). The trend itself runs some 64 km north-north-west through the town of Carlin.
Sources
- https://doi.org/10.2113/gsecongeo.101.2.347
- https://doi.org/10.1038/ngeo1064
- https://en.wikipedia.org/wiki/John_Livermore
- https://en.wikipedia.org/wiki/Gold_mining_in_Nevada
- https://westernmininghistory.com/mine-detail/10040611
- https://en.wikipedia.org/wiki/Carlin_Trend
- https://ozgeology.com/blogs/news/the-carlin-gold-discovery-that-rewrote-geology
Each event carries Aion's own evidence grade (mainstream, disputed or speculative). This page repeats what the globe shows for this place.