8/29/2017

REGIONAL SUBSURFACE ROCK CORRELATION DIAGRAM APPALACHIAN STORAGE HUB PROJECT

MAP INFORMAL SYSTEM SERIES SUBSURFACE STRATIGRAPHY INTERVAL NAMES

Permian Lower ? Pennsylvanian

Greenbrier Limestone GRNB Mined-rock cavern Keener, Big Lime, Big Injun, Mountain, Squaw, Weir, Coffee Shale, Keener sandstone Murrysville,Second Gas

Mississippian to Berea Sandstone KENR-BERE Gas reservoir

Venango Upper Devonian Gas reservoirs sandstones V5-V1 Gantz, Fifty-Foot, Hundred Foot; Thirty-Foot, Upper Nineveh, Snee, Lower Nineveh; Gordon Stray, Boulder, Gordon, Third; Fourth, Washington; Fifth, McDonald, Fifth A; Bayard, Bayard Stray, Elizabeth, Elizabeth Stray Bradford B5-B1 Upper First Warren; Second Warren; Third Warren; Upper Speechley, Speechley Stray, Brallier Speechley;Tiona, First Balltown; Elk E4-E1 Second Balltown; Sheffield, Third Balltown; Formation Bradford, Kane

Riley, Elk, Benson, Alexander, Haverty, Middlesex Shale Fox, Sycamore

Harrell Formation

Devonian Mahantango Formation Middle Marcellus Shale Onondaga Limestone Huntersville Chert Oriskany Sandstone ORSK Gas reservoir Lower

Upper Salina Group SLNF Salt cavern Newburg sandstone NBRG Localized gas reservoir

Silurian Middle

Lower Clinton/Medina Group Tuscarora Sandstone CATG Gas reservoir

Upper Utica Sh Coburn Fm Salona Fm

Ordovician Middle Lower Rose Run sandstone Gatesburg Formation Upper Sandy Member Upper RSRN Gas reservoir

Middle ? ? ? Cambrian Lower

Precambrian Diagram not to scale

LEGEND

Sandstone Evaporite/salt Murrysville Drillers’ Sand Names Siltstone and shale Chert Gas reservoir Type of potential storage Organic-rich shale Dolostone

Coal Unconformity

Limestone Crystalline basement rock