Black Diamond Mines Regional Preserve East Bay Regional Parks Northern California PEMA Field Trip/Hike Thursday, October 30, 2014 William E. (Bill) Motzer, PHD, PG, CHG Senior Geochemist Todd Groundwater bmotzer@toddgroundwater
Black Diamond Mines Regional Preserve East Bay Regional Parks
Dec 30, 2015
Black Diamond Mines Regional Preserve East Bay Regional Parks. Northern California PEMA Field Trip/Hike Thursday, October 30, 2014. William E. (Bill) Motzer, PHD, PG, CHG Senior Geochemist Todd Groundwater bmotzer@toddgroundwater. http://www.ebparks.org/Parks/Black_Diamond. Mt. Diablo - PowerPoint PPT Presentation
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Black Diamond Mines Regional PreserveEast Bay Regional Parks
Northern California PEMA Field Trip/HikeThursday, October 30, 2014
William E. (Bill) Motzer, PHD, PG, CHGSenior GeochemistTodd Groundwater
bmotzer@toddgroundwater
http://www.ebparks.org/Parks/Black_Diamond
Mt. Diablo Coal Field1860-1906
NortonvilleSomersvilleStewartvilleJudsonville
West Hartley
Nortonville: ca 1880
Black Diamond
Mines Regional Preserve Trail Maphttp://www.ebparks.org/Parks/Black_Diamond
Total Distance: ~3.3 miTotal Ascent: ~680 ftTotal Decent: ~755 ftTime: ~2.0 hours
HIKE:Moderately StrenuousRAIN: Cancels HikeUNDERGROUND: OK
LOOP HIKE
Rosehill (Historic) Cemetery
GeologySullivan (2012)
Capay Shale
Sullivan and Sullivan (2007)
Domengine Sandstone• R. Marvin Greathouse: Hazel-Atlas Mine• Near old Somersville townsite• 1922-1945• High-quality silica sand
Greathouse Portal: Visitor’s Center
Coal Seam/VeinBlack Diamond Vein: ~4.0 ft thick
Inhabitants:Temporary
and Permanent
Recommend: When You
Go…
• Wear boots
• Take sticks
• Take water
• Pull-over/Jacket
Watch For…
• Ticks
• Rattlesnakes
• Pies
• Ixodes pacificus (Western Black-legged tick)• Active: November through April• May carry Lyme disease
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