North Coast Marine Area 3 The NCMA 3 Block is located in shallow water (100-300’) off the north coast of Trinidad. Sedimentation occurred in the Miocene – Pliocene, depositing shelfal sands, which are currently under production in the Hibiscus, Chaconia and Poinsettia Fields, located to the north of the block. Two wells were drilled in this block HH6-1, which tested gas and Alma 1.   Area   2094 km2 Water depths   100-300 feet Wildcat wells   HH6-1, Alma-1 2D seismic lines   1300 line km HC types   Gas Source   Tertiary deep marine shales Seal   Overlying shales Prospective Sands   Miocene- Pliocene shelfal sands. Structural Trends   Bounded by the Tobago Arch to the SE. NW-SE trending normal faults.