Marcellus Formation (USA)
- Wikipedia 125876
- Marcellus-Shale.us 125877
- Marcellus natural gas trend - Wikipedia 224999
- Citizens Marcellus Shale Commission 125880
- Key Documents About Mid-Atlantic Oil and Gas Extraction - US EPA 125881
- Marcellus Shale Safe Drilling Initiative - Maryland Environment Dept. 125882
- Marcellus Shale Initiative Publications Database - Bucknell University 125886
- Marcellus Shale - Penn State 125887
- Marcellus Shale - Appalachian Basin Natural Gas Play - Geology 125888
- GoMarcellusShale: All things pertaining to the Marcellus & Utica Shale 125892
- Marcellus Shale Companies / Stocks 125893
- Marcellus Shale Coalition 125894
- EnergyFromShale 125899
- Marcellus Shale Education & Training Center 125900
- Marcellus Shale Natural Gas Drilling - PennLive 125903
- Earthworks - Marcellus and Utica Shale 225001
- State Impact - natural gas drilling in Pennsylvania 225003
- Five things to know about fracking in Pennsylvania. are voters listening? - Inside Climate News 02.11.20 225000
- The “greening” of Pennsylvania: the war on fracking - Capital Research 27.10.20 225002
- Hydraulic fracturing components in Marcellus groundwater likely from surface operations, not wells - The Conversation 12.10.15 225004
- Here's why marcellus shale play is so important for Chesapeake - Forbes 26.09.14 225005
- Banks Reluctant to Lend in Shale Plays as Evidence Mounts on Harm to Property Values Near Fracking 11/13 125904
- Production data shows Marcellus shale boom continues - PA Independent 8/12 125905
- Marcellus Shale becoming top US natural gas field - Business Week 8/12 125909
- Geochemical evidence for possible natural migration of Marcellus Formation brine to shallow aquifers in Pennsylvania - PNAS 5/12 125910