Standard Lithium Commences Resource Definition in Southern Arkansas

VANCOUVER, British Columbia, Jan. 30, 2018 (GLOBE NEWSWIRE) -- Standard Lithium Ltd. ("Standard Lithium" or the "Company") (TSX-V:SLL) (OTCQX:STLHF) (FRA:S5L) is pleased to announce that the Company has commenced detailed resource definition work at its recently optioned 33,000 acres of brine leases, located in a highly prospective area of the Smackover Formation in Southern Arkansas, USA.  This work integrates collection of new data from current well infrastructure, with a large amount of already-available, high quality, geological, geophysical and geochemical data.

The lease area has been historically drilled for oil and gas exploration, and approximately 256 exploration and production wells have been completed in the Smackover Formation in or immediately adjacent to Standard's new lease area (almost 3,000 wells have been drilled in southern Arkansas and provide excellent data to support interpretation in Standard's lease zone).  All of these 256 wells have geological logs, and all can be used to constrain the top of the Smackover Formation's brine-bearing zone.  In addition, a sub-set of 30 wells has full core reports that provide detailed data, and downhole geophysical logs that include formation resistivity and porosity data.  A further sub-set of 15 wells also has full core samples available from the Smackover Formation, these cores (available from the Arkansas Geological Survey core library) can be sent for additional laboratory testing to further refine porosity estimates for the Smackover resource zone in Standard's lease area.

In addition, Standard Lithium has retained Shreveport, Louisiana based Hill Geophysical Consulting to provide key geological interpretation of the lease area.  The Principal, Kevin Hill, has several decades of experience gathering and interpreting geophysical data from the Southern Arkansas area, and has been instrumental in identifying structures, lithological/porosity variations and new resource zones in the Smackover Formation throughout Standard's area of interest.  Of key importance is that Hill Geophysical have licensed access to over 320 km (200 miles) of high resolution 2D-seismic line data that have been collected in Standard Lithium's new lease area, and these lines fully image the total thickness of the Smackover Formation and fine-scale structures and lithology variations that are present therein.  Hill Geophysical Consulting is in the process of integrating the 256 well logs from the lease area into the 2D-seismic data, and is working towards producing a 3D-block model of the Smackover Formation underlying Standard's leases.