--> Figure 1. Possible origin of the Haynesville organic shale (based on Ewing, 2001, 2009 [this volume]). West to northwest-directed paleocurrents inferred for the Late Jurassic impinged on the Sabine shoal complex, built on the older basement high blocks, leading to upwelling of fertile deep waters and deposition of organic matter.

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Figure 1. Possible origin of the Haynesville organic shale (based on Ewing, 2001, 2009 [this volume]). West to northwest-directed paleocurrents inferred for the Late Jurassic impinged on the Sabine shoal complex, built on the older basement high blocks, leading to upwelling of fertile deep waters and deposition of organic matter.